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mesh-catalog/modules/claude-code/README.md
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jochen 6a7e4ebd5e claude-code over NATS: licence events, a token by request, a login pushed to the manager, MCP servers registered per node or mesh-wide
Events carry what happened and no secret; tokens travel on requests (design 32 §10). The manager's
licence.rotated/switched events make the module ask anthropic-licence-manager.current; at start it
asks once to catch up. A refresh token appearing in the credentials file is a login: it is pushed to
the manager's adopt at once, sealed to the manager's key — the one time a refresh token travels. A
switch replaces the old licence's grant whole, removes the API key and its helper, and rewrites
oauthAccount in ~/.claude.json. New tools register and unregister MCP servers on this node, or with
nodes: all / a list via an mcp.registered event every node consumes; called for one node, the
answer names the other nodes running claude-code. 26 tests.
2026-10-04 02:23:23 +02:00

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Markdown

# claude-code
The operator's agent on a machine (novox/hq design 36): its package, its machine-wide managed
configuration, and the consumer side of the Anthropic licence manager (design 39, ADR 0183).
## What it owns
Two directories, declared, so the mesh refuses a second module owning either:
- `/etc/claude-code`, the agent's machine-wide managed directory, root's, `0755`.
- `~/.claude` under the operator account's home, the operator's, `0700`. The module owns the directory —
that it exists, who owns it, its mode — and of what is inside only what it writes. Everything else
in it (memory, history, projects, local settings, a person's own rules and skills) is the person's
and is never read or written (hq ADR 0182). Unassigned, the module leaves the directory: the host
removes a directory only when it is empty.
## What it writes
Under the agent's managed directory, `/etc/claude-code`, owned whole by this module and rewritten
whenever the node's tool runtime collects the module's tools:
| file | holds |
|---|---|
| `managed-mcp.json` | the tool servers every session loads: the mesh's console as `mesh`, and the servers set in this module's `mcp_servers` setting. **Exclusive**: a server not listed here does not load — not one added with `claude mcp add`, not a project's `.mcp.json`, not a plugin's |
| `managed-settings.json` | the repositories' attribution convention, the claude.ai connectors kept beside the managed servers, and the key-helper while the node holds an API-key licence |
| `CLAUDE.md` | how a session on this mesh works, this node's name and role, the conventions |
Under the operator's home, only `~/.claude/.credentials.json`, and only when the licence manager hands
this node a subscription token. Nothing else under the home is read or written.
## Over NATS
Everything between this module and the rest of the mesh is NATS, in two kinds: an **event** says that
something happened and carries no secret, because a stream keeps it; a **request** carries a token,
because nothing keeps it (hq design 32 §10).
| what | how |
|---|---|
| the licence manager rotated a licence, or switched this node | its `licence.rotated` / `licence.switched` event; this module then asks `anthropic-licence-manager.current` for its token, sealed to the key it sends |
| this node starts | it asks `current` once, so a node that was off catches up |
| a person ran `/login` here | the credentials file gains a refresh token this module never writes; it asks `anthropic-licence-manager.adopt` at once with the grant sealed to the manager's key — the one time a refresh token travels, because the login made the manager's stale |
| an MCP server registered for more nodes than this one | an `mcp.registered` / `mcp.unregistered` event every node's claude-code consumes; a node that was off takes it when it is back |
## Tools
`claude_code_status`, `claude_code_render`, `claude_code_pull`, `claude_code_mcp_list`,
`claude_code_mcp_register` (this node by default; `nodes: "all"` or a list for more — called for this
node alone, its answer names the other nodes running claude-code), `claude_code_mcp_unregister`.
## Settings
Per node or for the whole mesh, through `mesh-controller.settings module=claude-code`:
- `role` — what this node is, in a few words; shown to every session.
- `mcp_servers` — extra tool servers, set by the operator for the mesh or a node, beside the ones
registered through the tools; keyed by name, in the vendor's `.mcp.json` entry shape
(`{"type":"http","url":…}` or `{"type":"stdio","command":…,"args":[…]}`). The name `mesh` is the
module's own and cannot be set. Put a person's own servers here, or they stop loading.
## On a machine that carried the predecessor
Remove these by hand, once; the mesh removes nothing it did not make (ADR 0182):
- `~/.claude/CLAUDE.md`
- `~/.claude/rules/00-hal-mesh.md`, `~/.claude/rules/conventions.md`
- `~/.claude/skills/cleanup/`, `~/.claude/skills/hal-switch-license/`
- the hand-made console entry in `~/.claude.json` under `mcpServers` — it is ignored now anyway
## Escalation
Writing `/etc/claude-code` needs root. The runtime runs as the operator account, and the module uses
that account's passwordless `sudo`; on a machine without it, `claude_code_render` says so and nothing
is written.