diff --git a/modules/anthropic-consumer/apply/index.ts b/modules/anthropic-consumer/apply/index.ts
new file mode 100644
index 0000000..c0ab37a
--- /dev/null
+++ b/modules/anthropic-consumer/apply/index.ts
@@ -0,0 +1,75 @@
+// The consumer's scheduled run: take the ACCESS token the mesh delivered and write it where the
+// Claude CLI reads it, access-token-only (novox/hq ADR 0050). The refresh token is never here to
+// strip — the manager holds it, and a holder's delivery has only ever been the access token.
+//
+// What the host delivers, per the manifest:
+//   secrets.model-access -> a file holding the sealed-then-unsealed ACCESS token (the host opened it
+//                           with this node's private key; this process reads plaintext).
+//   binds.model-access   -> a JSON file of the non-secret facts the licence serves (which licence,
+//                           model, and — when the control plane carries them — grant expiry/scopes).
+//
+// Runs as `mesh-tools run` (no broker) on a schedule, so it is idempotent: same token in, same file
+// out.
+
+import { readFileSync } from "node:fs";
+
+import { deliver, type DeliveredGrant } from "../credentials.js";
+import { readAccountUuid, check } from "../identity.js";
+
+function required(name: string): string {
+  const v = process.env[name];
+  if (!v) throw new Error(`${name} is not set — the consumer runtime was deployed without it`);
+  return v;
+}
+
+/** Read optional non-secret grant metadata (expiry, scopes, subscription) from the bound facts file. */
+function readBoundMeta(path: string | undefined): Partial<DeliveredGrant> {
+  if (!path) return {};
+  try {
+    const raw = JSON.parse(readFileSync(path, "utf8")) as Record<string, unknown>;
+    return {
+      expiresAt: typeof raw.expiresAt === "number" ? raw.expiresAt : null,
+      refreshTokenExpiresAt: typeof raw.refreshTokenExpiresAt === "number" ? raw.refreshTokenExpiresAt : null,
+      scopes: Array.isArray(raw.scopes) ? (raw.scopes as string[]) : null,
+      subscriptionType: typeof raw.subscriptionType === "string" ? raw.subscriptionType : null,
+    };
+  } catch {
+    return {};
+  }
+}
+
+function main(): void {
+  const accessToken = readFileSync(required("MESH_MODEL_ACCESS_SECRET_FILE"), "utf8").trim();
+  if (!accessToken) {
+    // Nothing was delivered — which reads exactly like a credential that never arrived, so it is
+    // said rather than written as an empty file the CLI would take for a login it should not do.
+    throw new Error("[anthropic-consumer] the delivered access token is empty; nothing was written");
+  }
+
+  const meta = readBoundMeta(process.env.MESH_MODEL_ACCESS_BIND_FILE);
+  const grant: DeliveredGrant = { accessToken, ...meta };
+
+  const target = process.env.MESH_CLAUDE_CREDENTIALS_FILE ?? `${homedir()}/.claude/.credentials.json`;
+  deliver(target, grant);
+  console.error(`[anthropic-consumer] wrote an access-token-only credential to ${target}`);
+
+  // The mis-binding guard, best-effort and fail-closed. The expected account uuid is not yet plumbed
+  // (identity.ts TODO), so this reports what it can see rather than acting on it — it never delivers
+  // to a wrong account because it never learns one to deliver to.
+  const identityFile = process.env.MESH_CLAUDE_IDENTITY_FILE ?? `${homedir()}/.claude.json`;
+  const found = readAccountUuid(identityFile);
+  const expected = process.env.MESH_MODEL_ACCESS_ACCOUNT_UUID ?? null;
+  const verdict = check(found, expected);
+  if (verdict.state === "wrong-account") {
+    throw new Error(
+      `[anthropic-consumer] the CLI is logged in as ${verdict.found}, not the licensed ${verdict.expected}; refusing`,
+    );
+  }
+  console.error(`[anthropic-consumer] identity check: ${verdict.state}`);
+}
+
+function homedir(): string {
+  return process.env.HOME ?? "/root";
+}
+
+main();
diff --git a/modules/anthropic-consumer/credentials.ts b/modules/anthropic-consumer/credentials.ts
new file mode 100644
index 0000000..574c9f5
--- /dev/null
+++ b/modules/anthropic-consumer/credentials.ts
@@ -0,0 +1,82 @@
+// Writing the access token where the Claude CLI reads it — the consumer half of model-access
+// (novox/hq ADR 0050). A node holds an ACCESS token and nothing else: it cannot rotate, so it is
+// never given a refresh token, and this enforces that on every write.
+//
+// The file shape and the strip are ported byte-exact from the mature implementation (see the port
+// map): `~/.claude/.credentials.json` → `{ claudeAiOauth: { accessToken, expiresAt,
+// refreshTokenExpiresAt?, scopes?, subscriptionType? } }`, and the refresh token is deleted, not
+// merely omitted, so a full grant left by an interactive login is stripped back to access-only.
+
+import { readFileSync, writeFileSync, renameSync, mkdirSync } from "node:fs";
+import { dirname } from "node:path";
+
+/** The access-token-only grant the mesh delivered — what the manager submitted, minus the refresh. */
+export interface DeliveredGrant {
+  readonly accessToken: string;
+  readonly expiresAt?: number | null;
+  readonly refreshTokenExpiresAt?: number | null;
+  readonly scopes?: string[] | null;
+  readonly subscriptionType?: string | null;
+}
+
+interface ClaudeOauth {
+  accessToken?: string;
+  expiresAt?: number;
+  refreshTokenExpiresAt?: number;
+  scopes?: string[];
+  subscriptionType?: string;
+  refreshToken?: string;
+}
+
+interface Credentials {
+  claudeAiOauth?: ClaudeOauth;
+  [key: string]: unknown;
+}
+
+/** Read the existing credentials file, or an empty object if there is none or it is unreadable. */
+function readLocal(path: string): Credentials {
+  try {
+    return JSON.parse(readFileSync(path, "utf8")) as Credentials;
+  } catch {
+    return {};
+  }
+}
+
+/**
+ * Overlay the delivered grant onto whatever is on disk, then STRIP the refresh token — the node
+ * carve-out. Returns the object to write, so the strip is testable without touching a file.
+ */
+export function applyGrant(local: Credentials, grant: DeliveredGrant): Credentials {
+  const oauth = local.claudeAiOauth ?? {};
+  const next: Credentials = {
+    ...local,
+    claudeAiOauth: {
+      ...oauth,
+      accessToken: grant.accessToken,
+      ...(grant.expiresAt != null ? { expiresAt: grant.expiresAt } : {}),
+      ...(grant.refreshTokenExpiresAt != null
+        ? { refreshTokenExpiresAt: grant.refreshTokenExpiresAt }
+        : {}),
+      ...(grant.scopes ? { scopes: grant.scopes } : {}),
+      ...(grant.subscriptionType ? { subscriptionType: grant.subscriptionType } : {}),
+    },
+  };
+  // A node NEVER holds a refresh token: delete it, so a full grant on disk is reduced to access-only.
+  delete next.claudeAiOauth!.refreshToken;
+  return next;
+}
+
+/** Atomic write-then-rename at 0600 — a partial credentials file must never be read as a whole one. */
+export function writeCredentials(path: string, creds: Credentials): void {
+  mkdirSync(dirname(path), { recursive: true });
+  const tmp = `${path}.tmp`;
+  writeFileSync(tmp, JSON.stringify(creds, null, 2), { mode: 0o600 });
+  renameSync(tmp, path);
+}
+
+/** Read, overlay, strip, write — the whole consumer credential update, in one call. */
+export function deliver(path: string, grant: DeliveredGrant): Credentials {
+  const next = applyGrant(readLocal(path), grant);
+  writeCredentials(path, next);
+  return next;
+}
diff --git a/modules/anthropic-consumer/identity.ts b/modules/anthropic-consumer/identity.ts
new file mode 100644
index 0000000..e3af1c0
--- /dev/null
+++ b/modules/anthropic-consumer/identity.ts
@@ -0,0 +1,49 @@
+// The mis-binding guard (novox/hq ADR 0050, port map §identity). Account identity is NOT in the
+// token or any API — it lives in a sibling CLI state file, `~/.claude.json` →
+// `oauthAccount.accountUuid`. The guard compares the account the CLI is actually logged in as to the
+// account the licence was recorded against, and FAILS CLOSED: an absent file or an unrecorded licence
+// account refuses rather than guesses, because delivering an access token to the wrong account is the
+// exact fault this exists to catch.
+//
+// **Partial first cut, FLAGGED.** Reading the sibling file is implemented; the licence's recorded
+// account uuid is not yet plumbed from the control plane to the consumer (the bound `model.json` does
+// not carry it today). So `check` returns `licence-not-adopted` when no expected uuid is supplied,
+// which is the fail-closed answer, and the wiring of the expected uuid is a TODO below.
+
+import { readFileSync } from "node:fs";
+
+export type IdentityVerdict =
+  | { state: "verified"; accountUuid: string }
+  | { state: "no-identity-file" }
+  | { state: "licence-not-adopted" }
+  | { state: "wrong-account"; found: string; expected: string };
+
+interface ClaudeJson {
+  oauthAccount?: { accountUuid?: string; emailAddress?: string; organizationUuid?: string };
+}
+
+/** Read `oauthAccount.accountUuid` from `~/.claude.json`, or null if the file or field is absent. */
+export function readAccountUuid(path: string): string | null {
+  try {
+    const raw = JSON.parse(readFileSync(path, "utf8")) as ClaudeJson;
+    return raw.oauthAccount?.accountUuid ?? null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Compare the CLI's logged-in account to the one the licence was recorded against. Pure over its
+ * inputs so the fail-closed logic is tested without a filesystem.
+ *
+ * TODO(novox/hq ADR 0050, Phase C): plumb `expected` — the licence's recorded account uuid — from the
+ * control plane into the consumer's bound `model.json`, then adopt-on-first-sight or refuse per the
+ * port map's five states. Until then only the two safe verdicts are reachable: verified when an
+ * expected uuid is provided and matches, refuse otherwise.
+ */
+export function check(found: string | null, expected: string | null): IdentityVerdict {
+  if (found === null) return { state: "no-identity-file" };
+  if (!expected) return { state: "licence-not-adopted" };
+  if (found === expected) return { state: "verified", accountUuid: found };
+  return { state: "wrong-account", found, expected };
+}
diff --git a/modules/anthropic-consumer/module.json b/modules/anthropic-consumer/module.json
new file mode 100644
index 0000000..0b5e52c
--- /dev/null
+++ b/modules/anthropic-consumer/module.json
@@ -0,0 +1,91 @@
+{
+  "module": "anthropic-consumer",
+  "version": "1",
+  "capabilities": [
+    "container-runtime"
+  ],
+  "requires": [
+    "model-access"
+  ],
+  "binds": {
+    "model-access": "/var/lib/anthropic-consumer/model.json"
+  },
+  "secrets": {
+    "model-access": "/var/lib/anthropic-consumer/access-token"
+  },
+  "own-secrets": {
+    "broker": "/var/lib/mesh/anthropic-consumer/broker"
+  },
+  "emits": [
+    "module.anthropic-consumer.usage.session"
+  ],
+  "resources": [
+    {
+      "id": "mesh-state",
+      "type": "directory",
+      "path": "/var/lib/mesh/anthropic-consumer",
+      "mode": "0700"
+    },
+    {
+      "id": "state",
+      "type": "directory",
+      "path": "/var/lib/anthropic-consumer",
+      "mode": "0700"
+    },
+    {
+      "id": "claude-home",
+      "type": "directory",
+      "path": "/var/lib/anthropic-consumer/claude",
+      "mode": "0700"
+    },
+    {
+      "id": "out",
+      "type": "directory",
+      "path": "/var/lib/anthropic-consumer/out",
+      "mode": "0700"
+    },
+    {
+      "id": "apply",
+      "type": "container",
+      "name": "mesh-anthropic-consumer-apply",
+      "image": "mesh-runtime-anthropic-consumer@sha256:0000000000000000000000000000000000000000000000000000000000000000",
+      "network": "host",
+      "schedule": "*/5 * * * *",
+      "args": [
+        "run",
+        "/app/modules/anthropic-consumer/dist/apply/index.js"
+      ],
+      "volumes": [
+        "/var/lib/anthropic-consumer:/run/state"
+      ],
+      "env": {
+        "MESH_MODEL_ACCESS_SECRET_FILE": "/run/state/access-token",
+        "MESH_MODEL_ACCESS_BIND_FILE": "/run/state/model.json",
+        "MESH_CLAUDE_CREDENTIALS_FILE": "/run/state/claude/.credentials.json",
+        "MESH_CLAUDE_IDENTITY_FILE": "/run/state/claude/.claude.json"
+      }
+    },
+    {
+      "id": "usage",
+      "type": "container",
+      "name": "mesh-anthropic-consumer-usage",
+      "image": "mesh-runtime-anthropic-consumer@sha256:0000000000000000000000000000000000000000000000000000000000000000",
+      "network": "host",
+      "schedule": "*/5 * * * *",
+      "args": [
+        "run",
+        "/app/modules/anthropic-consumer/dist/usage/index.js"
+      ],
+      "volumes": [
+        "/var/lib/mesh/anthropic-consumer/broker:/run/secrets/broker:ro",
+        "/var/lib/anthropic-consumer:/run/state"
+      ],
+      "env": {
+        "MESH_BROKER_FILE": "/run/secrets/broker",
+        "MESH_CLAUDE_PROJECTS_DIR": "/run/state/claude/projects",
+        "MESH_ANTHROPIC_USAGE_OUT": "/run/state/out/session-usage.json",
+        "MESH_TOOLS_MAIN": "/app/dist/main.js"
+      }
+    }
+  ]
+}
diff --git a/modules/anthropic-consumer/package.json b/modules/anthropic-consumer/package.json
new file mode 100644
index 0000000..ef3f418
--- /dev/null
+++ b/modules/anthropic-consumer/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "@novox/module-anthropic-consumer",
+  "version": "0.1.0",
+  "description": "anthropic-consumer — the consumer side of model-access (ADR 0050): writes the delivered access token to ~/.claude/.credentials.json (access-token-only) and reports session-grain usage from the CLI transcripts (ADR 0054).",
+  "type": "module",
+  "private": true,
+  "dependencies": {
+    "@novox/mesh-sdk": "^0.1.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.6.0"
+  }
+}
diff --git a/modules/anthropic-consumer/test/credentials.test.ts b/modules/anthropic-consumer/test/credentials.test.ts
new file mode 100644
index 0000000..72ddcd7
--- /dev/null
+++ b/modules/anthropic-consumer/test/credentials.test.ts
@@ -0,0 +1,32 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { mkdtempSync, readFileSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+
+import { applyGrant, deliver } from "../credentials.ts";
+
+test("applyGrant strips the refresh token a full grant on disk left behind", () => {
+  const local = { claudeAiOauth: { accessToken: "at-old", refreshToken: "rt-must-not-survive" } };
+  const next = applyGrant(local, { accessToken: "at-new", expiresAt: 123 });
+  assert.equal(next.claudeAiOauth!.accessToken, "at-new");
+  assert.equal(next.claudeAiOauth!.expiresAt, 123);
+  assert.ok(!("refreshToken" in next.claudeAiOauth!), "a node held onto a refresh token");
+});
+
+test("deliver writes the port-map shape, access-token-only, and never a refresh token", () => {
+  const dir = mkdtempSync(join(tmpdir(), "anthropic-consumer-"));
+  const path = join(dir, ".credentials.json");
+  // A prior interactive login left a full grant on disk.
+  writeFileSync(path, JSON.stringify({ claudeAiOauth: { accessToken: "at-old", refreshToken: "rt-login" } }));
+
+  deliver(path, { accessToken: "at-delivered", expiresAt: 999, subscriptionType: "max" });
+
+  const raw = readFileSync(path, "utf8");
+  const creds = JSON.parse(raw);
+  assert.equal(creds.claudeAiOauth.accessToken, "at-delivered");
+  assert.equal(creds.claudeAiOauth.expiresAt, 999);
+  assert.equal(creds.claudeAiOauth.subscriptionType, "max");
+  assert.doesNotMatch(raw, /rt-login/, "the refresh token is still on disk");
+  assert.ok(!("refreshToken" in creds.claudeAiOauth));
+});
diff --git a/modules/anthropic-consumer/test/transcript.test.ts b/modules/anthropic-consumer/test/transcript.test.ts
new file mode 100644
index 0000000..5048b5a
--- /dev/null
+++ b/modules/anthropic-consumer/test/transcript.test.ts
@@ -0,0 +1,48 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+
+import { foldTranscript } from "../transcript.ts";
+
+// A captured-shape transcript: two assistant turns and a user line, exactly the fields the port map
+// names. Not imagined — the field names match the mature implementation's parse.
+const TRANSCRIPT = [
+  JSON.stringify({ type: "user", timestamp: "2026-01-01T00:00:00Z", cwd: "/work/app", gitBranch: "main" }),
+  JSON.stringify({
+    type: "assistant",
+    timestamp: "2026-01-01T00:00:01Z",
+    costUSD: 0.01,
+    message: {
+      model: "claude-opus-4-8",
+      usage: { input_tokens: 100, cache_creation_input_tokens: 20, cache_read_input_tokens: 5, output_tokens: 40 },
+    },
+  }),
+  JSON.stringify({
+    type: "assistant",
+    timestamp: "2026-01-01T00:00:02Z",
+    costUSD: 0.02,
+    message: { model: "claude-opus-4-8", usage: { input_tokens: 200, output_tokens: 60 } },
+  }),
+  "", // a half-written trailing line is ordinary and must not be fatal.
+].join("\n");
+
+test("a transcript sums per-session token counts, cost, and metadata", () => {
+  const s = foldTranscript("session-abc", TRANSCRIPT);
+  assert.equal(s.sessionId, "session-abc");
+  assert.equal(s.turns, 2);
+  assert.equal(s.inputTokens, 300);
+  assert.equal(s.cacheCreationTokens, 20);
+  assert.equal(s.cacheReadTokens, 5);
+  assert.equal(s.outputTokens, 100);
+  assert.equal(Math.round(s.costUSD * 100) / 100, 0.03);
+  assert.equal(s.model, "claude-opus-4-8");
+  assert.equal(s.gitBranch, "main");
+  assert.equal(s.cwd, "/work/app");
+  assert.equal(s.startedAt, "2026-01-01T00:00:00Z");
+  assert.equal(s.lastActive, "2026-01-01T00:00:02Z");
+});
+
+test("a malformed line is skipped, not fatal", () => {
+  const s = foldTranscript("s", 'not json\n{"type":"assistant","message":{"usage":{"output_tokens":7}}}');
+  assert.equal(s.outputTokens, 7);
+  assert.equal(s.turns, 1);
+});
diff --git a/modules/anthropic-consumer/transcript.ts b/modules/anthropic-consumer/transcript.ts
new file mode 100644
index 0000000..bb6149b
--- /dev/null
+++ b/modules/anthropic-consumer/transcript.ts
@@ -0,0 +1,113 @@
+// Session-grain usage from the CLI's own transcripts (novox/hq ADR 0054). The mature implementation
+// reads `~/.claude/projects/<projDir>/<sessionId>.jsonl` and sums the token counts each assistant
+// message reports; this ports the token extraction and DROPS the per-message account-attribution
+// timeline — the nox (node,module) session has a fixed licence binding (port map "don't-map" #3), so
+// there is nothing to attribute per message.
+//
+// The fields are ported from the port map: assistant lines carry
+// `message.usage.{input_tokens,cache_creation_input_tokens,cache_read_input_tokens,output_tokens}`,
+// `costUSD`, `message.model`, `timestamp`; user lines carry `cwd`, `gitBranch`.
+
+import { createInterface } from "node:readline";
+import { createReadStream } from "node:fs";
+
+/** One session's totals — the session-grain usage row ADR 0054 fixes. */
+export interface SessionUsage {
+  sessionId: string;
+  model: string | null;
+  gitBranch: string | null;
+  cwd: string | null;
+  turns: number;
+  inputTokens: number;
+  cacheCreationTokens: number;
+  cacheReadTokens: number;
+  outputTokens: number;
+  costUSD: number;
+  startedAt: string | null;
+  lastActive: string | null;
+}
+
+interface Line {
+  type?: string;
+  timestamp?: string;
+  cwd?: string;
+  gitBranch?: string;
+  costUSD?: number;
+  message?: {
+    model?: string;
+    usage?: {
+      input_tokens?: number;
+      cache_creation_input_tokens?: number;
+      cache_read_input_tokens?: number;
+      output_tokens?: number;
+    };
+  };
+}
+
+function empty(sessionId: string): SessionUsage {
+  return {
+    sessionId,
+    model: null,
+    gitBranch: null,
+    cwd: null,
+    turns: 0,
+    inputTokens: 0,
+    cacheCreationTokens: 0,
+    cacheReadTokens: 0,
+    outputTokens: 0,
+    costUSD: 0,
+    startedAt: null,
+    lastActive: null,
+  };
+}
+
+/** Fold one transcript line into a session's running totals. Pure, so it is tested on fixtures. */
+export function foldLine(acc: SessionUsage, raw: string): SessionUsage {
+  const line = parse(raw);
+  if (!line) return acc;
+
+  if (line.timestamp) {
+    if (!acc.startedAt || line.timestamp < acc.startedAt) acc.startedAt = line.timestamp;
+    if (!acc.lastActive || line.timestamp > acc.lastActive) acc.lastActive = line.timestamp;
+  }
+  if (line.type === "user") {
+    if (line.cwd) acc.cwd = line.cwd;
+    if (line.gitBranch) acc.gitBranch = line.gitBranch;
+  }
+  if (line.type === "assistant") {
+    acc.turns += 1;
+    const u = line.message?.usage ?? {};
+    acc.inputTokens += u.input_tokens ?? 0;
+    acc.cacheCreationTokens += u.cache_creation_input_tokens ?? 0;
+    acc.cacheReadTokens += u.cache_read_input_tokens ?? 0;
+    acc.outputTokens += u.output_tokens ?? 0;
+    acc.costUSD += line.costUSD ?? 0;
+    if (!acc.model && line.message?.model) acc.model = line.message.model;
+  }
+  return acc;
+}
+
+function parse(raw: string): Line | null {
+  const trimmed = raw.trim();
+  if (!trimmed) return null;
+  try {
+    return JSON.parse(trimmed) as Line;
+  } catch {
+    // A malformed line is skipped, never fatal: a transcript is an append-only log the CLI owns, and
+    // a half-written last line is ordinary.
+    return null;
+  }
+}
+
+/** Sum a whole transcript string into one session's usage — the tested core of the streaming read. */
+export function foldTranscript(sessionId: string, text: string): SessionUsage {
+  return text.split("\n").reduce(foldLine, empty(sessionId));
+}
+
+/** Stream one `<sessionId>.jsonl` file line by line, so a large transcript never loads whole. */
+export async function readSessionFile(path: string, sessionId: string): Promise<SessionUsage> {
+  const acc = empty(sessionId);
+  const rl = createInterface({ input: createReadStream(path), crlfDelay: Infinity });
+  for await (const line of rl) foldLine(acc, line);
+  return acc;
+}
diff --git a/modules/anthropic-consumer/tsconfig.json b/modules/anthropic-consumer/tsconfig.json
new file mode 100644
index 0000000..ab08067
--- /dev/null
+++ b/modules/anthropic-consumer/tsconfig.json
@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "noEmit": true
+  },
+  "include": [
+    "credentials.ts",
+    "transcript.ts",
+    "identity.ts",
+    "apply/index.ts",
+    "usage/index.ts"
+  ]
+}
diff --git a/modules/anthropic-consumer/usage/index.ts b/modules/anthropic-consumer/usage/index.ts
new file mode 100644
index 0000000..7f31b11
--- /dev/null
+++ b/modules/anthropic-consumer/usage/index.ts
@@ -0,0 +1,92 @@
+// Session-grain usage emission (novox/hq ADR 0054). On a schedule, read every transcript under
+// `~/.claude/projects/*/<sessionId>.jsonl`, sum its tokens, and emit one session-grain usage event
+// per session. The consumer IS the (node,module) session's fixed binding, so no per-message account
+// attribution is done — just the totals (port map "don't-map" #3).
+//
+// Runs as `mesh-tools run` (no broker), so events are emitted best-effort via the sibling mesh-tools
+// `emit` primitive; the totals are also written to a file so the reading is observable without one.
+
+import { readdirSync, statSync, writeFileSync, renameSync, mkdirSync } from "node:fs";
+import { join, dirname } from "node:path";
+
+import { readSessionFile, type SessionUsage } from "../transcript.js";
+
+function projectsDir(): string {
+  return process.env.MESH_CLAUDE_PROJECTS_DIR ?? `${process.env.HOME ?? "/root"}/.claude/projects`;
+}
+
+/** Every `<sessionId>.jsonl` under the projects tree, with the project directory it sits in. */
+function transcripts(root: string): { path: string; sessionId: string }[] {
+  const found: { path: string; sessionId: string }[] = [];
+  let projects: string[];
+  try {
+    projects = readdirSync(root);
+  } catch {
+    return found; // no projects yet is not a failure — there is simply nothing to report.
+  }
+  for (const proj of projects) {
+    const dir = join(root, proj);
+    let entries: string[];
+    try {
+      if (!statSync(dir).isDirectory()) continue;
+      entries = readdirSync(dir);
+    } catch {
+      continue;
+    }
+    for (const file of entries) {
+      if (!file.endsWith(".jsonl")) continue;
+      found.push({ path: join(dir, file), sessionId: file.replace(/\.jsonl$/, "") });
+    }
+  }
+  return found;
+}
+
+async function main(): Promise<void> {
+  const module = process.env.MESH_MODULE ?? "anthropic-consumer";
+  const node = process.env.MESH_NODE ?? "unknown";
+
+  const readings: SessionUsage[] = [];
+  for (const t of transcripts(projectsDir())) {
+    try {
+      readings.push(await readSessionFile(t.path, t.sessionId));
+    } catch (err) {
+      console.error(`[anthropic-consumer] could not read ${t.path}: ${err}`);
+    }
+  }
+
+  for (const r of readings) {
+    await emitUsage({ grain: "session", node, module, ...r });
+  }
+
+  if (process.env.MESH_ANTHROPIC_USAGE_OUT) {
+    atomicWrite(process.env.MESH_ANTHROPIC_USAGE_OUT, JSON.stringify(readings, null, 2));
+  }
+  console.error(`[anthropic-consumer] reported ${readings.length} session(s)`);
+}
+
+function atomicWrite(path: string, content: string): void {
+  mkdirSync(dirname(path), { recursive: true });
+  const tmp = `${path}.tmp`;
+  writeFileSync(tmp, content, { mode: 0o600 });
+  renameSync(tmp, path);
+}
+
+/** Emit best-effort via the sibling mesh-tools `emit`, which wires a broker a run step has none. */
+async function emitUsage(body: Record<string, unknown>): Promise<void> {
+  const main = process.env.MESH_TOOLS_MAIN ?? "/app/dist/main.js";
+  const { spawn } = await import("node:child_process");
+  await new Promise<void>((resolve) => {
+    const child = spawn(
+      process.execPath,
+      [main, "emit", "module.anthropic-consumer.usage.session", JSON.stringify(body)],
+      { stdio: "inherit" },
+    );
+    child.on("exit", () => resolve());
+    child.on("error", (err) => {
+      console.error(`[anthropic-consumer] could not emit usage: ${err}`);
+      resolve();
+    });
+  });
+}
+
+await main();
diff --git a/modules/anthropic-manager/adopt/index.ts b/modules/anthropic-manager/adopt/index.ts
new file mode 100644
index 0000000..794cd7f
--- /dev/null
+++ b/modules/anthropic-manager/adopt/index.ts
@@ -0,0 +1,39 @@
+// Adoption: the ONE time an operator's refresh token enters the mesh, and it enters already sealed.
+//
+// The refresh token is read here, on the MANAGER NODE, sealed at rest to that node's own key, and
+// only the sealed envelope leaves this process (novox/hq ADR 0050, Phase C). The control plane stores
+// that envelope via `licence set-grant` without ever seeing the refresh token in the clear — the same
+// bound every refresh keeps. This is the counterpart to `refresh/index.js`: adoption seals the first
+// envelope, refresh opens and re-seals it.
+//
+//   MESH_ANTHROPIC_REFRESH_TOKEN_FILE  the operator's refresh token, read once and never written out
+//   MESH_NODE_SEALING_PUBLIC_FILE      the manager node's public sealing key (base64 raw X25519)
+//   MESH_ANTHROPIC_GRANT_OUT           where the sealed envelope is written, for `licence set-grant`
+
+import { readFileSync, writeFileSync, renameSync, mkdirSync } from "node:fs";
+import { dirname } from "node:path";
+
+import { sealAtRest } from "../atrest.js";
+
+function required(name: string): string {
+  const v = process.env[name];
+  if (!v) throw new Error(`${name} is not set — adoption needs it`);
+  return v;
+}
+
+const refreshToken = readFileSync(required("MESH_ANTHROPIC_REFRESH_TOKEN_FILE"), "utf8").trim();
+if (!refreshToken) throw new Error("[anthropic-manager] there is no refresh token to adopt");
+
+const nodePub = readFileSync(required("MESH_NODE_SEALING_PUBLIC_FILE"), "utf8").trim();
+const envelope = sealAtRest(refreshToken, nodePub);
+
+const out = required("MESH_ANTHROPIC_GRANT_OUT");
+mkdirSync(dirname(out), { recursive: true });
+const tmp = `${out}.tmp`;
+writeFileSync(
+  tmp,
+  JSON.stringify({ token: envelope.token, wrapped_key: envelope.wrappedKey, manager_key: envelope.managerKey }),
+  { mode: 0o600 },
+);
+renameSync(tmp, out);
+console.error("[anthropic-manager] sealed the refresh token at rest; only this node's key opens it");
diff --git a/modules/anthropic-manager/atrest.ts b/modules/anthropic-manager/atrest.ts
new file mode 100644
index 0000000..759ab6c
--- /dev/null
+++ b/modules/anthropic-manager/atrest.ts
@@ -0,0 +1,174 @@
+// The refresh token, encrypted at rest so ONE node — the manager — can read it back, and nothing
+// else can: not the control plane, not a copy of its database, not another node.
+//
+// **Why this file exists at all.** novox/hq ADR 0050 draws one bounded carve-out in the mesh's "the
+// control plane cannot read what it stores" guarantee: a refreshable-grant credential (Anthropic's
+// subscription OAuth) must be rotated centrally, and rotating it means SOME node reads the refresh
+// token back, every cycle. The ADR names exactly one such node — the *manager* — and this is the
+// mechanism by which it, and only it, reads that token. mesh-control (the control plane) holds the
+// output of this as three opaque strings and never runs the open: it has no key that could.
+//
+// **The construction (ECIES over the node's own sealing key).** Envelope encryption:
+//   - a fresh random 32-byte data key encrypts the refresh token with AES-256-GCM (`token`);
+//   - that data key is wrapped to the manager node's X25519 sealing key — the same key pair the
+//     host already holds for the node — via an ephemeral-static ECDH → HKDF-SHA256 → AES-256-GCM
+//     (`wrappedKey`, carrying the ephemeral public key in front);
+//   - `managerKey` is the node public key the data key was wrapped to, kept so a node that has since
+//     rotated its key learns it can no longer open this, rather than discovering it as a decrypt
+//     that fails.
+// Recovering the refresh token needs the node's X25519 *private* half, which never leaves that
+// machine. A copy of the control plane's database is a directory of ciphertexts and wrapped keys
+// with nothing to open either.
+//
+// **On format.** This is the manager module's own at-rest format, distinct from mesh-control's Go
+// `secrets.AtRest` (which is NaCl secretbox + sealed box). That is deliberate and safe: on the
+// Anthropic path the manager module is the ONLY component that seals or opens the envelope — it
+// seals at adoption, it opens and re-seals every refresh — and mesh-control stores the three parts
+// as opaque strings it never interprets. The two never have to agree byte-for-byte because the
+// bytes never cross the language boundary in an opened form. (If an operator-facing adopt path in
+// mesh-control ever needed to produce the first envelope, the two would have to be unified — a NaCl
+// port in TS, or a Go manager runtime. Flagged, not silently assumed.)
+
+import {
+  createCipheriv,
+  createDecipheriv,
+  createPrivateKey,
+  createPublicKey,
+  diffieHellman,
+  generateKeyPairSync,
+  hkdfSync,
+  randomBytes,
+  type KeyObject,
+} from "node:crypto";
+
+/** The three opaque parts mesh-control stores and forwards, and nothing else. */
+export interface Envelope {
+  /** base64( iv ‖ tag ‖ AES-256-GCM(dataKey, refreshToken) ). */
+  readonly token: string;
+  /** base64( ephemeralPub(32) ‖ iv ‖ tag ‖ AES-256-GCM(kek, dataKey) ). */
+  readonly wrappedKey: string;
+  /** base64 of the node's raw 32-byte X25519 public key the data key was wrapped to. */
+  readonly managerKey: string;
+}
+
+const INFO = Buffer.from("mesh-atrest-v1");
+const IV_LEN = 12;
+const TAG_LEN = 16;
+const RAW_KEY_LEN = 32;
+
+/** Import a node's raw 32-byte X25519 public key (standard base64, as the mesh records it). */
+function importPublic(rawBase64: string): KeyObject {
+  const raw = Buffer.from(rawBase64, "base64");
+  if (raw.length !== RAW_KEY_LEN) {
+    throw new Error(`a sealing public key is 32 bytes, not ${raw.length}`);
+  }
+  return createPublicKey({
+    key: { kty: "OKP", crv: "X25519", x: raw.toString("base64url") },
+    format: "jwk",
+  });
+}
+
+/** Import a node's raw 32-byte X25519 private key together with its public half. */
+function importPrivate(rawPrivB64: string, rawPubB64: string): KeyObject {
+  const priv = Buffer.from(rawPrivB64, "base64");
+  const pub = Buffer.from(rawPubB64, "base64");
+  if (priv.length !== RAW_KEY_LEN) {
+    throw new Error(`a sealing private key is 32 bytes, not ${priv.length}`);
+  }
+  return createPrivateKey({
+    key: { kty: "OKP", crv: "X25519", x: pub.toString("base64url"), d: priv.toString("base64url") },
+    format: "jwk",
+  });
+}
+
+/** The raw 32-byte public key of an X25519 KeyObject. */
+function rawPublic(key: KeyObject): Buffer {
+  const jwk = key.export({ format: "jwk" }) as { x?: string };
+  if (!jwk.x) throw new Error("a public key had no point");
+  return Buffer.from(jwk.x, "base64url");
+}
+
+/** Bind the wrapping key to both the ephemeral and the recipient public key, as a sealed box does. */
+function deriveKek(shared: Buffer, ephemeralPub: Buffer, recipientPub: Buffer): Buffer {
+  const salt = Buffer.concat([ephemeralPub, recipientPub]);
+  return Buffer.from(hkdfSync("sha256", shared, salt, INFO, 32));
+}
+
+/**
+ * Seal a refresh token so only the holder of managerPublicKey's private half can read it.
+ *
+ * A fresh data key and ephemeral key each time, so two envelopes of the same token look nothing
+ * alike — a rotation that changed nothing is indistinguishable from one that changed everything.
+ */
+export function sealAtRest(refreshToken: string, managerPublicKeyB64: string): Envelope {
+  if (!refreshToken) throw new Error("there is nothing to seal");
+  const recipient = importPublic(managerPublicKeyB64);
+  const recipientPub = rawPublic(recipient);
+
+  // Ephemeral-static ECDH: a throwaway key pair whose public half rides in the envelope.
+  const eph = generateKeyPairSync("x25519");
+  const ephemeralPub = rawPublic(eph.publicKey);
+  const shared = diffieHellman({ privateKey: eph.privateKey, publicKey: recipient });
+  const kek = deriveKek(shared, ephemeralPub, recipientPub);
+
+  const dataKey = randomBytes(32);
+
+  const wrappedKey = Buffer.concat([ephemeralPub, aesSeal(kek, dataKey)]);
+  const token = aesSeal(dataKey, Buffer.from(refreshToken, "utf8"));
+
+  return {
+    token: token.toString("base64"),
+    wrappedKey: wrappedKey.toString("base64"),
+    managerKey: managerPublicKeyB64,
+  };
+}
+
+/**
+ * Recover the refresh token, given the manager node's own key pair. This is the one place a refresh
+ * token is in the clear, and it runs only on the manager node.
+ */
+export function openAtRest(env: Envelope, managerPublicKeyB64: string, managerPrivateKeyB64: string): string {
+  const priv = importPrivate(managerPrivateKeyB64, managerPublicKeyB64);
+  const recipientPub = Buffer.from(managerPublicKeyB64, "base64");
+
+  const wrapped = Buffer.from(env.wrappedKey, "base64");
+  if (wrapped.length < RAW_KEY_LEN + IV_LEN + TAG_LEN) {
+    throw new Error("the wrapped key is too short to hold what it must");
+  }
+  const ephemeralPub = wrapped.subarray(0, RAW_KEY_LEN);
+  const wrappedRest = wrapped.subarray(RAW_KEY_LEN);
+
+  const ephemeralKey = importPublic(ephemeralPub.toString("base64"));
+  const shared = diffieHellman({ privateKey: priv, publicKey: ephemeralKey });
+  const kek = deriveKek(shared, ephemeralPub, recipientPub);
+
+  let dataKey: Buffer;
+  try {
+    dataKey = aesOpen(kek, wrappedRest);
+  } catch {
+    throw new Error("this refresh token was not wrapped to this manager's key");
+  }
+  if (dataKey.length !== 32) throw new Error("the wrapped data key is the wrong length");
+
+  const refresh = aesOpen(dataKey, Buffer.from(env.token, "base64"));
+  return refresh.toString("utf8");
+}
+
+// --- AES-256-GCM helpers: output/consume iv ‖ tag ‖ ciphertext ---
+
+function aesSeal(key: Buffer, plaintext: Buffer): Buffer {
+  const iv = randomBytes(IV_LEN);
+  const cipher = createCipheriv("aes-256-gcm", key, iv);
+  const ct = Buffer.concat([cipher.update(plaintext), cipher.final()]);
+  const tag = cipher.getAuthTag();
+  return Buffer.concat([iv, tag, ct]);
+}
+
+function aesOpen(key: Buffer, blob: Buffer): Buffer {
+  const iv = blob.subarray(0, IV_LEN);
+  const tag = blob.subarray(IV_LEN, IV_LEN + TAG_LEN);
+  const ct = blob.subarray(IV_LEN + TAG_LEN);
+  const decipher = createDecipheriv("aes-256-gcm", key, iv);
+  decipher.setAuthTag(tag);
+  return Buffer.concat([decipher.update(ct), decipher.final()]);
+}
diff --git a/modules/anthropic-manager/client.ts b/modules/anthropic-manager/client.ts
new file mode 100644
index 0000000..5b37387
--- /dev/null
+++ b/modules/anthropic-manager/client.ts
@@ -0,0 +1,135 @@
+// The only file that talks to Anthropic — the vendor half of the refreshable-grant adapter
+// (novox/hq ADR 0050). Isolated exactly as cloudflare-dns isolates its registrar call, so the
+// vendor is swappable and the one place a token endpoint is reached is auditable.
+//
+// Two endpoints, and they are different hosts (port-map "don't-map" #1): the TOKEN host mints a new
+// access token from the refresh token; the USAGE host reports utilisation against an access token.
+
+/** The token endpoint, overridable so the lab can point the whole flow at a stub without a vendor. */
+export function tokenEndpoint(env = process.env): string {
+  return env.MESH_ANTHROPIC_TOKEN_ENDPOINT ?? "https://platform.claude.com/v1/oauth/token";
+}
+
+/** The usage endpoint, likewise overridable for the lab. */
+export function usageEndpoint(env = process.env): string {
+  return env.MESH_ANTHROPIC_USAGE_ENDPOINT ?? "https://api.anthropic.com/api/oauth/usage";
+}
+
+// The OAuth client id is a hard-won constant, ported byte-exact from the mature implementation: a
+// metadata URL in its place yields 400. It is not a secret (it identifies the public Claude Code
+// client), so it lives in code.
+const CLIENT_ID = "9d1c250a-e61b-44d9-88ed-5944d1962f5e";
+
+/** The vendor's token response, snake_case as the wire has it. */
+export interface RefreshedGrant {
+  readonly access_token?: string;
+  readonly refresh_token?: string;
+  readonly expires_in?: number;
+  readonly refresh_token_expires_in?: number;
+  readonly scopes?: string[];
+  readonly subscription_type?: string;
+}
+
+/**
+ * Exchange a refresh token for a fresh grant. Returns null on any non-ok response, surfacing the
+ * OAuth error body (invalid_grant/invalid_client/…) — the difference between "the token is dead" and
+ * "the endpoint was unreachable", which a bare status hides.
+ */
+export async function refreshGrant(
+  refreshToken: string,
+  env = process.env,
+): Promise<RefreshedGrant | null> {
+  const resp = await fetch(tokenEndpoint(env), {
+    method: "POST",
+    headers: { "content-type": "application/x-www-form-urlencoded" },
+    body: new URLSearchParams({
+      grant_type: "refresh_token",
+      refresh_token: refreshToken,
+      client_id: CLIENT_ID,
+    }),
+  });
+  if (!resp.ok) {
+    const body = await resp.text().catch(() => "<unreadable>");
+    console.error(
+      `[anthropic-manager] token refresh failed: ${resp.status} ${resp.statusText} — ${body.slice(0, 400)}`,
+    );
+    return null;
+  }
+  return (await resp.json()) as RefreshedGrant;
+}
+
+/** The vendor's usage response — utilisation percentages against several windows. */
+export interface UsageLimits {
+  readonly five_hour?: { utilization: number; resets_at?: string };
+  readonly seven_day?: { utilization: number; resets_at?: string };
+  readonly seven_day_sonnet?: { utilization: number; resets_at?: string };
+  readonly seven_day_opus?: { utilization: number; resets_at?: string };
+  readonly extra_usage?: { utilization: number };
+  readonly [key: string]: unknown;
+}
+
+/**
+ * Read utilisation for an access token. Never refreshes here (a 401 is just reported): a second
+ * refresh source racing the first is the fault the mature implementation warns against.
+ */
+export async function readUsage(accessToken: string, env = process.env): Promise<UsageLimits | null> {
+  const resp = await fetch(usageEndpoint(env), {
+    headers: { authorization: `Bearer ${accessToken}` },
+  });
+  if (!resp.ok) {
+    const body = await resp.text().catch(() => "");
+    console.error(`[anthropic-manager] usage endpoint returned ${resp.status}: ${body.slice(0, 200)}`);
+    return null;
+  }
+  return (await resp.json()) as UsageLimits;
+}
+
+/** The licence-grain reading ADR 0054 fixes, flattened from the vendor's windows. */
+export interface UsageReading {
+  readonly sessionPct: number | null;
+  readonly sessionResetsAt: string | null;
+  readonly weeklyPct: number | null;
+  readonly sonnetPct: number | null;
+  readonly extraPct: number | null;
+  readonly raw: UsageLimits;
+}
+
+export function flattenUsage(u: UsageLimits): UsageReading {
+  return {
+    sessionPct: u.five_hour?.utilization ?? null,
+    sessionResetsAt: u.five_hour?.resets_at ?? null,
+    weeklyPct: u.seven_day?.utilization ?? null,
+    sonnetPct: u.seven_day_sonnet?.utilization ?? null,
+    extraPct: u.extra_usage?.utilization ?? null,
+    raw: u,
+  };
+}
+
+/** The access-token-only grant a holder is delivered — the port-map credential-file shape's fields. */
+export interface AccessGrant {
+  readonly accessToken: string;
+  readonly expiresAt: number | null;
+  readonly refreshTokenExpiresAt: number | null;
+  readonly scopes: string[] | null;
+  readonly subscriptionType: string | null;
+}
+
+/**
+ * Turn a vendor refresh into what the manager submits: the access-token-only grant for holders, and
+ * the rotated refresh token if the vendor sent one. Never clobbers a good grant from an empty
+ * response — no access_token means the caller keeps what it had.
+ */
+export function grantFromRefresh(r: RefreshedGrant, nowMs: number): { access: AccessGrant; rotatedRefresh: string | null } | null {
+  if (!r.access_token) return null;
+  return {
+    access: {
+      accessToken: r.access_token,
+      expiresAt: typeof r.expires_in === "number" ? nowMs + r.expires_in * 1000 : null,
+      refreshTokenExpiresAt:
+        typeof r.refresh_token_expires_in === "number" ? nowMs + r.refresh_token_expires_in * 1000 : null,
+      scopes: r.scopes ?? null,
+      subscriptionType: r.subscription_type ?? null,
+    },
+    rotatedRefresh: r.refresh_token ?? null,
+  };
+}
diff --git a/modules/anthropic-manager/module.json b/modules/anthropic-manager/module.json
new file mode 100644
index 0000000..b33c78c
--- /dev/null
+++ b/modules/anthropic-manager/module.json
@@ -0,0 +1,68 @@
+{
+  "module": "anthropic-manager",
+  "version": "1",
+  "capabilities": [
+    "container-runtime"
+  ],
+  "own-secrets": {
+    "broker": "/var/lib/mesh/anthropic-manager/broker"
+  },
+  "emits": [
+    "module.anthropic-manager.usage.read"
+  ],
+  "resources": [
+    {
+      "id": "mesh-state",
+      "type": "directory",
+      "path": "/var/lib/mesh/anthropic-manager",
+      "mode": "0700"
+    },
+    {
+      "id": "keys",
+      "type": "directory",
+      "path": "/var/lib/mesh/anthropic-manager/keys",
+      "mode": "0700"
+    },
+    {
+      "id": "out",
+      "type": "directory",
+      "path": "/var/lib/mesh/anthropic-manager/out",
+      "mode": "0700"
+    },
+    {
+      "id": "config",
+      "type": "file",
+      "path": "/var/lib/mesh/anthropic-manager/config.json",
+      "merge": "json",
+      "content": "{}",
+      "mode": "0600"
+    },
+    {
+      "id": "refresh",
+      "type": "container",
+      "name": "mesh-anthropic-manager-refresh",
+      "image": "mesh-runtime-anthropic-manager@sha256:0000000000000000000000000000000000000000000000000000000000000000",
+      "network": "host",
+      "schedule": "*/5 * * * *",
+      "args": [
+        "run",
+        "/app/modules/anthropic-manager/dist/refresh/index.js"
+      ],
+      "volumes": [
+        "/var/lib/mesh/anthropic-manager/broker:/run/secrets/broker:ro",
+        "/var/lib/mesh/anthropic-manager:/run/state"
+      ],
+      "env": {
+        "MESH_BROKER_FILE": "/run/secrets/broker",
+        "MESH_ANTHROPIC_LICENCE": "personal",
+        "MESH_ANTHROPIC_GRANT_FILE": "/run/state/grant.json",
+        "MESH_NODE_SEALING_PUBLIC_FILE": "/run/state/keys/sealing.pub",
+        "MESH_NODE_SEALING_PRIVATE_FILE": "/run/state/keys/sealing.priv",
+        "MESH_ANTHROPIC_ACCESS_OUT": "/run/state/out/access-token",
+        "MESH_ANTHROPIC_GRANT_OUT": "/run/state/out/grant.json",
+        "MESH_ANTHROPIC_USAGE_OUT": "/run/state/out/usage.json",
+        "MESH_TOOLS_MAIN": "/app/dist/main.js"
+      }
+    }
+  ]
+}
diff --git a/modules/anthropic-manager/package.json b/modules/anthropic-manager/package.json
new file mode 100644
index 0000000..90d518a
--- /dev/null
+++ b/modules/anthropic-manager/package.json
@@ -0,0 +1,14 @@
+{
+  "name": "@novox/module-anthropic-manager",
+  "version": "0.1.0",
+  "description": "anthropic-manager — the manager side of the model-access refreshable-grant (ADR 0050): opens the refresh token on the manager node alone, refreshes it against Anthropic's OAuth endpoint, and submits back only the access token and the re-sealed refresh envelope.",
+  "type": "module",
+  "private": true,
+  "dependencies": {
+    "@novox/mesh-sdk": "^0.1.0"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "typescript": "^5.6.0"
+  }
+}
diff --git a/modules/anthropic-manager/refresh/index.ts b/modules/anthropic-manager/refresh/index.ts
new file mode 100644
index 0000000..245057f
--- /dev/null
+++ b/modules/anthropic-manager/refresh/index.ts
@@ -0,0 +1,142 @@
+// The manager's scheduled run (novox/hq ADR 0050/0053). It is the whole of the carve-out in one
+// place, and it runs on the MANAGER NODE, never in the control plane:
+//
+//   1. read the opaque refresh-token envelope the control plane forwarded (it cannot open it);
+//   2. open it HERE with the node's own sealing key — the one moment a refresh token is in the clear,
+//      on the one node the ADR permits it;
+//   3. call the vendor's OAuth token endpoint to mint a fresh access token (and maybe a rotated
+//      refresh token);
+//   4. re-seal the rotated refresh token at rest (still openable by this node alone);
+//   5. hand the control plane back ONLY the access token in the clear + the opaque re-sealed
+//      envelope — never the refresh token — which it seals per holder and stores;
+//   6. poll usage with the fresh access token and record the licence-grain reading.
+//
+// mesh-control receives the products of steps 5–6 through `licence submit-refresh` (access token +
+// opaque envelope). The refresh token never leaves this process except as ciphertext.
+//
+// This runs as `mesh-tools run`, which connects no broker, so the outputs are written to files the
+// host mounts; the submit itself (the transport to mesh-control) is done by the caller invoking
+// `mesh-control licence submit-refresh`. In the lab that caller is the scenario; in production it is
+// an authenticated call the manager node makes. The transport is the one part stubbed here — FLAGGED
+// — because a cross-node authenticated command surface is out of this module's scope.
+
+import { readFileSync, writeFileSync, renameSync, mkdirSync } from "node:fs";
+import { dirname } from "node:path";
+
+import { openAtRest, sealAtRest, type Envelope } from "../atrest.js";
+import { refreshGrant, grantFromRefresh, readUsage, flattenUsage } from "../client.js";
+
+function required(name: string): string {
+  const v = process.env[name];
+  if (!v) throw new Error(`${name} is not set — the manager runtime was deployed without it`);
+  return v;
+}
+
+function readTrimmed(path: string): string {
+  return readFileSync(path, "utf8").trim();
+}
+
+/** Accept an envelope in either the wire (snake_case) or internal (camelCase) shape. */
+function readEnvelope(path: string): Envelope {
+  const raw = JSON.parse(readFileSync(path, "utf8")) as Record<string, string>;
+  const token = raw.token ?? "";
+  const wrappedKey = raw.wrappedKey ?? raw.wrapped_key ?? "";
+  const managerKey = raw.managerKey ?? raw.manager_key ?? "";
+  if (!token || !wrappedKey || !managerKey) {
+    throw new Error("the refresh-token envelope is missing one of token/wrapped_key/manager_key");
+  }
+  return { token, wrappedKey, managerKey };
+}
+
+/** Write the envelope in the wire (snake_case) shape mesh-control's `submit-refresh` reads. */
+function writeEnvelope(path: string, env: Envelope): void {
+  atomicWrite(
+    path,
+    JSON.stringify({ token: env.token, wrapped_key: env.wrappedKey, manager_key: env.managerKey }),
+  );
+}
+
+function atomicWrite(path: string, content: string): void {
+  mkdirSync(dirname(path), { recursive: true });
+  const tmp = `${path}.tmp`;
+  writeFileSync(tmp, content, { mode: 0o600 });
+  renameSync(tmp, path);
+}
+
+async function main(): Promise<void> {
+  const licence = process.env.MESH_ANTHROPIC_LICENCE ?? "unknown";
+
+  const envelope = readEnvelope(required("MESH_ANTHROPIC_GRANT_FILE"));
+  const nodePub = readTrimmed(required("MESH_NODE_SEALING_PUBLIC_FILE"));
+  const nodePriv = readTrimmed(required("MESH_NODE_SEALING_PRIVATE_FILE"));
+
+  // Step 2: the one open, on the manager node.
+  const refreshToken = openAtRest(envelope, nodePub, nodePriv);
+
+  // Step 3: the vendor call.
+  const refreshed = await refreshGrant(refreshToken);
+  if (!refreshed) {
+    // A dead endpoint or a rejected token: nothing to publish, and we do not clobber a good grant.
+    throw new Error(`[anthropic-manager] the refresh of ${licence} produced no grant`);
+  }
+  const grant = grantFromRefresh(refreshed, Date.now());
+  if (!grant) {
+    throw new Error(`[anthropic-manager] the refresh of ${licence} returned no access token`);
+  }
+
+  // Step 4: re-seal the rotated refresh token, if the vendor rotated it. Nothing to store otherwise.
+  if (grant.rotatedRefresh) {
+    const rotated = sealAtRest(grant.rotatedRefresh, nodePub);
+    if (process.env.MESH_ANTHROPIC_GRANT_OUT) {
+      writeEnvelope(process.env.MESH_ANTHROPIC_GRANT_OUT, rotated);
+    }
+  }
+
+  // Step 5: the access token in the clear, for the control plane to seal per holder. This is all it
+  // ever receives that is not ciphertext.
+  atomicWrite(required("MESH_ANTHROPIC_ACCESS_OUT"), grant.access.accessToken);
+
+  console.error(
+    `[anthropic-manager] refreshed ${licence}: access token minted` +
+      (grant.rotatedRefresh ? ", refresh token rotated and re-sealed" : ", refresh token unchanged"),
+  );
+
+  // Step 6: licence-grain usage, best-effort — a usage read failing must not fail the refresh.
+  try {
+    const usage = await readUsage(grant.access.accessToken);
+    if (usage) {
+      const reading = flattenUsage(usage);
+      if (process.env.MESH_ANTHROPIC_USAGE_OUT) {
+        atomicWrite(
+          process.env.MESH_ANTHROPIC_USAGE_OUT,
+          JSON.stringify({ licence, grain: "licence", ...reading }),
+        );
+      }
+      await emitUsage({ licence, grain: "licence", ...reading });
+    }
+  } catch (err) {
+    console.error(`[anthropic-manager] usage poll for ${licence} failed: ${err}`);
+  }
+}
+
+/**
+ * Emit a usage event best-effort by shelling out to the sibling mesh-tools `emit` primitive, which
+ * is the one path that wires a broker from a run-once/scheduled step (which itself connects none).
+ * A broker hiccup must never fail a refresh that already happened.
+ */
+async function emitUsage(body: Record<string, unknown>): Promise<void> {
+  const main = process.env.MESH_TOOLS_MAIN ?? "/app/dist/main.js";
+  const { spawn } = await import("node:child_process");
+  await new Promise<void>((resolve) => {
+    const child = spawn(process.execPath, [main, "emit", "module.anthropic-manager.usage.read", JSON.stringify(body)], {
+      stdio: "inherit",
+    });
+    child.on("exit", () => resolve());
+    child.on("error", (err) => {
+      console.error(`[anthropic-manager] could not emit usage: ${err}`);
+      resolve();
+    });
+  });
+}
+
+await main();
diff --git a/modules/anthropic-manager/test/atrest.test.ts b/modules/anthropic-manager/test/atrest.test.ts
new file mode 100644
index 0000000..595bf63
--- /dev/null
+++ b/modules/anthropic-manager/test/atrest.test.ts
@@ -0,0 +1,47 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { generateKeyPairSync } from "node:crypto";
+
+import { sealAtRest, openAtRest, type Envelope } from "../atrest.ts";
+
+/** A node key pair as the mesh records it: raw 32-byte X25519 keys, standard base64. */
+function nodeKeys(): { pub: string; priv: string } {
+  const kp = generateKeyPairSync("x25519");
+  const pub = (kp.publicKey.export({ format: "jwk" }) as { x: string }).x;
+  const priv = (kp.privateKey.export({ format: "jwk" }) as { d: string }).d;
+  // JWK is base64url; the mesh records standard base64 of the same 32 bytes.
+  const std = (b64url: string) => Buffer.from(b64url, "base64url").toString("base64");
+  return { pub: std(pub), priv: std(priv) };
+}
+
+test("the manager seals a refresh token and reads it back with its own key", () => {
+  const { pub, priv } = nodeKeys();
+  const env = sealAtRest("rt-the-refresh-token", pub);
+  assert.equal(env.managerKey, pub);
+  // Nothing in the envelope is the refresh token in the clear.
+  assert.doesNotMatch(env.token, /rt-the-refresh-token/);
+  assert.doesNotMatch(env.wrappedKey, /rt-the-refresh-token/);
+  assert.equal(openAtRest(env, pub, priv), "rt-the-refresh-token");
+});
+
+test("a node that is not the manager cannot open the envelope", () => {
+  const manager = nodeKeys();
+  const other = nodeKeys();
+  const env = sealAtRest("rt-secret", manager.pub);
+  assert.throws(() => openAtRest(env, other.pub, other.priv));
+});
+
+test("two seals of the same token look nothing alike", () => {
+  const { pub } = nodeKeys();
+  const a = sealAtRest("rt-secret", pub);
+  const b = sealAtRest("rt-secret", pub);
+  assert.notEqual(a.token, b.token);
+  assert.notEqual(a.wrappedKey, b.wrappedKey);
+});
+
+test("a tampered envelope is refused, not silently mis-opened", () => {
+  const { pub, priv } = nodeKeys();
+  const env = sealAtRest("rt-secret", pub);
+  const flipped: Envelope = { ...env, token: Buffer.from(env.token, "base64").reverse().toString("base64") };
+  assert.throws(() => openAtRest(flipped, pub, priv));
+});
diff --git a/modules/anthropic-manager/test/client.test.ts b/modules/anthropic-manager/test/client.test.ts
new file mode 100644
index 0000000..a28cd5f
--- /dev/null
+++ b/modules/anthropic-manager/test/client.test.ts
@@ -0,0 +1,43 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+
+import { grantFromRefresh, flattenUsage } from "../client.ts";
+
+test("an empty refresh response never clobbers a good grant", () => {
+  assert.equal(grantFromRefresh({}, 1000), null);
+});
+
+test("a refresh with an access token yields an access-token-only grant and epoch expiry", () => {
+  const out = grantFromRefresh(
+    { access_token: "at-new", expires_in: 3600, refresh_token: "rt-rotated", subscription_type: "pro" },
+    1_000_000,
+  );
+  assert.ok(out);
+  assert.equal(out!.access.accessToken, "at-new");
+  assert.equal(out!.access.expiresAt, 1_000_000 + 3600 * 1000);
+  assert.equal(out!.access.subscriptionType, "pro");
+  // The rotated refresh token is reported separately, for the manager to re-seal — never put in the
+  // holder grant.
+  assert.equal(out!.rotatedRefresh, "rt-rotated");
+  assert.ok(!("refreshToken" in (out!.access as object)));
+});
+
+test("a refresh that did not rotate the refresh token reports none to re-seal", () => {
+  const out = grantFromRefresh({ access_token: "at-new" }, 0);
+  assert.ok(out);
+  assert.equal(out!.rotatedRefresh, null);
+});
+
+test("usage flattens the vendor windows to the ADR 0054 grain", () => {
+  const r = flattenUsage({
+    five_hour: { utilization: 42, resets_at: "2026-01-01T00:00:00Z" },
+    seven_day: { utilization: 10 },
+    seven_day_sonnet: { utilization: 5 },
+    extra_usage: { utilization: 1 },
+  });
+  assert.equal(r.sessionPct, 42);
+  assert.equal(r.sessionResetsAt, "2026-01-01T00:00:00Z");
+  assert.equal(r.weeklyPct, 10);
+  assert.equal(r.sonnetPct, 5);
+  assert.equal(r.extraPct, 1);
+});
diff --git a/modules/anthropic-manager/tsconfig.json b/modules/anthropic-manager/tsconfig.json
new file mode 100644
index 0000000..3a6da13
--- /dev/null
+++ b/modules/anthropic-manager/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "noEmit": true
+  },
+  "include": [
+    "atrest.ts",
+    "client.ts",
+    "adopt/index.ts",
+    "refresh/index.ts"
+  ]
+}