diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/composed_test.go b/modules/mesh-provisioner/cmd/mesh-provisioner/composed_test.go
index 88eeaafdb..62a873bf0 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/composed_test.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/composed_test.go
@@ -12,13 +12,15 @@ package main
 import (
 	"context"
 	"encoding/json"
+	engineclient "git.novox.be/novox/mesh-contracts/go/clients/nodeengineclient"
+	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
+	catalog "git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
 	"os"
 	"strings"
 	"testing"
 	"time"
 
 	"git.novox.be/novox/mesh-sdk/go/catalogue"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
 // today is a captured composition: the node, the builds its wants named, and the plans at them and at the newest.
@@ -48,7 +50,7 @@ func published(t *testing.T, s *memStore, c today) {
 			v["plan"] = plan
 		}
 		raw, _ := json.Marshal(v)
-		s.write(t, ComposedRead, mustKey(delivery.ComposedKey(c.Node, module, fp)), string(raw))
+		s.write(t, ComposedRead, mustKey(composedKey(c.Node, module, fp)), string(raw))
 	}
 	for module, fp := range fpsOf {
 		plan, has := c.Newest.Plans[module]
@@ -58,7 +60,7 @@ func published(t *testing.T, s *memStore, c today) {
 		plan, has := c.AtWants.Plans[module]
 		put(module, fp, plan, has)
 	}
-	s.write(t, ComposedRead, mustKey(delivery.ComposedNodeKey(c.Node)), `{"v":1,"node":"`+c.Node+`","resources":[]}`)
+	s.write(t, ComposedRead, mustKey(engineclient.HaveNodeKey(c.Node)), `{"v":1,"node":"`+c.Node+`","resources":[]}`)
 }
 
 // goldenMesh is the store as the provisioner reads it for frombustest's mesh: the indexer's modules, n1's placement, the
@@ -73,9 +75,9 @@ func goldenMesh(t *testing.T, c today) *memStore {
 			raw = `{"module":"postgres","version":"1","provides":[{"name":"postgres-database","scope":"mesh"}],` +
 				`"serves":{"postgres-database":{"port":5432}}}`
 		}
-		digest := delivery.ManifestDigest([]byte(raw))
-		value, _ := delivery.EncodeManifest(delivery.Manifest{Module: module, JSON: raw})
-		s.write(t, ManifestsRead, mustKey(delivery.ManifestsKey(digest)), string(value))
+		digest := catalogclient.ManifestDigest([]byte(raw))
+		value, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: module, Manifest: raw})
+		s.write(t, ManifestsRead, mustKey(catalogclient.ManifestsKey(digest)), string(value))
 		s.write(t, ModulesRead, module, `{"v":1,"fp2":"`+fp+`","manifest":"`+digest+`"}`)
 	}
 	s.write(t, PlacementRead, "placement."+c.Node, `{"v":1,"node":"`+c.Node+`","decided":{},"modules":[{"module":"store"},`+
@@ -140,7 +142,7 @@ func TestARefusedOrMissingCompositionHoldsItsModule(t *testing.T) {
 		t.Fatal(err)
 	}
 	plan, _ := s.Get(PlansState, "n1.restic")
-	key := mustKey(delivery.ComposedKey("n1", "restic", fpsOf["restic"]))
+	key := mustKey(composedKey("n1", "restic", fpsOf["restic"]))
 	s.write(t, ComposedRead, key, `{"v":1,"node":"n1","module":"restic","fp":"`+fpsOf["restic"]+`","resources":[],`+
 		`"refused":"restic requires postgres-database and no module offers it"}`)
 	out, err := h.ComposeNode(context.Background(), c.Node)
@@ -202,3 +204,12 @@ func valueOf(e *Entry) string {
 	}
 	return string(e.Value)
 }
+
+// composedKey is a module's key in the node-engine's composed state, from the fingerprint the test names it by.
+func composedKey(node, module, fp string) (string, error) {
+	part, err := catalogclient.KeyPart(fp)
+	if err != nil {
+		return "", err
+	}
+	return engineclient.ComposedKey(node, module, part)
+}
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/holder.go b/modules/mesh-provisioner/cmd/mesh-provisioner/holder.go
index 1bf227552..01e212089 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/holder.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/holder.go
@@ -31,6 +31,12 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	engineclient "git.novox.be/novox/mesh-contracts/go/clients/nodeengineclient"
+	assignerclient "git.novox.be/novox/mesh-contracts/placement/go/clients/meshmoduleassignerclient"
+	meshseat "git.novox.be/novox/mesh-contracts/placement/go/seats/meshmoduleassigner"
+	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
+	catalog "git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
+	builds "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/builds"
 	"slices"
 	"sort"
 	"strings"
@@ -42,7 +48,6 @@ import (
 	"git.novox.be/novox/mesh-contracts/provisioning/go/clients/meshprovisionerclient"
 	stdio "git.novox.be/novox/mesh-sdk/go"
 	"git.novox.be/novox/mesh-sdk/go/catalogue"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
 // The states it keeps, beside Registry, Needs, Applied and Collect. RefusedState holds, by `<node>.<module>`, why a
@@ -64,14 +69,14 @@ type Refusal struct {
 // The reads it makes the plans from. ComposedRead is every node's published compositions, `composed-<node>` (ADR 0593
 // §6), read as the node-engine's named state: its keys are `<node>.<module>.<fingerprint hex>` and `<node>.node`.
 const (
-	PlacementRead = delivery.PlacementRead
-	WantsRead     = delivery.AssignerModule + ".wants"
-	ModulesRead   = delivery.IndexerModule + ".modules"
-	ManifestsRead = delivery.IndexerModule + ".manifests"
+	PlacementRead = (assignerModule + "." + meshseat.StatePlacement)
+	WantsRead     = assignerModule + ".wants"
+	ModulesRead   = indexerModule + "." + catalog.StateModules
+	ManifestsRead = indexerModule + "." + catalog.StateManifests
 	HaveRead      = "node-engine.have"
 	// BuildsRead is the builder's builds, `<module>.<fingerprint part>`: the key of the build a provider runs names the
 	// digest of the manifest it was built from (novox/hq ADR 0603 clause 5).
-	BuildsRead   = delivery.BuilderModule + ".builds"
+	BuildsRead   = builds.BuilderModule + ".builds"
 	ComposedRead = "mesh-host.composed"
 )
 
@@ -461,7 +466,7 @@ func (h *Holder) wantedOn(node string) (map[string]string, error) {
 		return nil, fmt.Errorf("the wants cannot be read: %w", err)
 	}
 	for _, k := range keys {
-		n, module, err := delivery.ParseWantKey(k)
+		n, module, err := parseWantKey(k)
 		if err != nil || n != node {
 			continue
 		}
@@ -469,8 +474,8 @@ func (h *Holder) wantedOn(node string) (map[string]string, error) {
 		if err != nil || e == nil {
 			continue
 		}
-		if w, err := delivery.DecodeWant(e.Value); err == nil && !w.Removed && w.FP != "" {
-			out[module] = w.FP
+		if w, err := decodeWant(e.Value); err == nil && !w.Removed && w.Fp != "" {
+			out[module] = w.Fp
 		}
 	}
 	return out, nil
@@ -485,7 +490,7 @@ func (h *Holder) runningOn(node string) (map[string]string, error) {
 		return nil, fmt.Errorf("the haves cannot be read: %w", err)
 	}
 	for _, k := range keys {
-		n, module, isNode, err := delivery.ParseHaveKey(k)
+		n, module, isNode, err := engineclient.ParseHaveKey(k)
 		if err != nil || isNode || n != node {
 			continue
 		}
@@ -493,8 +498,8 @@ func (h *Holder) runningOn(node string) (map[string]string, error) {
 		if err != nil || e == nil {
 			continue
 		}
-		if have, err := delivery.DecodeHave(e.Value); err == nil && have.FP != "" {
-			out[module] = have.FP
+		if have, err := engineclient.DecodeHave(e.Value); err == nil && have.Fp != "" {
+			out[module] = have.Fp
 		}
 	}
 	return out, nil
@@ -808,27 +813,27 @@ func (h *Holder) haveOutcome(p *meshprovisionerclient.Provision) {
 		p.State, p.Why = meshprovisionerclient.Asked, "waits for "+where+" to run: it says nothing yet"
 		return
 	}
-	have, err := delivery.DecodeHave(e.Value)
+	have, err := engineclient.DecodeHave(e.Value)
 	if err != nil {
 		p.State, p.Why = meshprovisionerclient.Asked, "the have of "+where+" is not readable"
 		return
 	}
 	wantFP := ""
 	if we, err := h.Store.Get(WantsRead, "want."+key); err == nil && we != nil {
-		if w, err := delivery.DecodeWant(we.Value); err == nil && !w.Removed {
-			wantFP = w.FP
+		if w, err := decodeWant(we.Value); err == nil && !w.Removed {
+			wantFP = w.Fp
 		}
 	}
 	switch {
-	case have.Phase == delivery.PhaseFailed || have.Health == delivery.HealthFailed:
+	case have.Phase == engineclient.PhaseFailed || have.Health == engineclient.HealthFailed:
 		p.State, p.Why = meshprovisionerclient.Failed, orSaid(have.Detail, where+" failed")
-	case have.Phase == delivery.PhaseRunning && have.Health == delivery.HealthOK && (wantFP == "" || have.FP == wantFP):
+	case have.Phase == engineclient.PhaseRunning && have.Health == engineclient.HealthOK && (wantFP == "" || have.Fp == wantFP):
 		// A provider's have counts as its outcome only from a build whose manifest offers the provision (ADR 0603 clause 5).
 		// Refused only when that manifest is known and does not offer it: a have with no builder key (an old-form build, an
 		// adopted module) or an unreadable manifest keeps the outcome it had.
-		if offers, known := h.buildOffers(p.Provider.Module, have.FP, p.Provision); known && !offers {
+		if offers, known := h.buildOffers(p.Provider.Module, have.Fp, p.Provision); known && !offers {
 			p.State, p.Why = meshprovisionerclient.Asked, "waits for "+where+" to run a build that offers "+p.Provision+": the build it runs ("+
-				have.FP+") does not"
+				have.Fp+") does not"
 			return
 		}
 		p.State, p.Why = meshprovisionerclient.Provided, ""
@@ -842,7 +847,7 @@ func (h *Holder) haveOutcome(p *meshprovisionerclient.Provision) {
 // offers the provision; known is false when the builder holds no such key, the key names no manifest, or the indexer holds
 // no such manifest (the caller then does not refuse).
 func (h *Holder) buildOffers(module, fingerprint, provision string) (offers, known bool) {
-	key, err := delivery.BuilderBuildKey(module, fingerprint)
+	key, err := builds.BuilderBuildKey(module, fingerprint)
 	if err != nil {
 		return false, false
 	}
@@ -850,11 +855,11 @@ func (h *Holder) buildOffers(module, fingerprint, provision string) (offers, kno
 	if err != nil || be == nil {
 		return false, false
 	}
-	b, err := delivery.DecodeBuilderBuild(be.Value)
+	b, err := builds.DecodeBuilderBuild(be.Value)
 	if err != nil || b.Manifest == "" {
 		return false, false
 	}
-	mk, err := delivery.ManifestsKey(b.Manifest)
+	mk, err := catalogclient.ManifestsKey(b.Manifest)
 	if err != nil {
 		return false, false
 	}
@@ -862,14 +867,14 @@ func (h *Holder) buildOffers(module, fingerprint, provision string) (offers, kno
 	if err != nil || me == nil {
 		return false, false
 	}
-	man, err := delivery.DecodeManifest(me.Value)
+	man, err := catalogclient.DecodeManifest(me.Value)
 	if err != nil {
 		return false, false
 	}
 	var decl struct {
 		Provides []json.RawMessage `json:"provides"`
 	}
-	if json.Unmarshal([]byte(man.JSON), &decl) != nil {
+	if json.Unmarshal([]byte(man.Manifest), &decl) != nil {
 		return false, false
 	}
 	for _, raw := range decl.Provides {
@@ -947,7 +952,7 @@ func keepsEntriesFor(manifest, provision string) (bool, error) {
 
 // providerManifest is a provider's manifest JSON at the trunk, as the indexer holds it.
 func (h *Holder) providerManifest(module string) (string, error) {
-	mk, err := delivery.ModulesKey(module)
+	mk, err := catalogclient.ModulesKey(module)
 	if err != nil {
 		return "", err
 	}
@@ -955,11 +960,11 @@ func (h *Holder) providerManifest(module string) (string, error) {
 	if err != nil || e == nil {
 		return "", fmt.Errorf("the indexer holds no modules.%s (%v)", module, err)
 	}
-	m, err := delivery.DecodeModule(e.Value)
+	m, err := catalogclient.DecodeModule(e.Value)
 	if err != nil || m.Manifest == "" {
 		return "", fmt.Errorf("the indexer's modules.%s names no manifest", module)
 	}
-	key, err := delivery.ManifestsKey(m.Manifest)
+	key, err := catalogclient.ManifestsKey(m.Manifest)
 	if err != nil {
 		return "", err
 	}
@@ -967,11 +972,11 @@ func (h *Holder) providerManifest(module string) (string, error) {
 	if err != nil || me == nil {
 		return "", fmt.Errorf("the indexer holds no manifest of %s (%v)", module, err)
 	}
-	man, err := delivery.DecodeManifest(me.Value)
+	man, err := catalogclient.DecodeManifest(me.Value)
 	if err != nil {
 		return "", err
 	}
-	return man.JSON, nil
+	return man.Manifest, nil
 }
 
 // retired says a retiring key the operator approved is retired: its provider's entry is gone.
@@ -1310,7 +1315,7 @@ func (h *Holder) put(key string, p meshprovisionerclient.Provision) {
 
 // NodesOfPlacement is the node a placement key names, in either form (research 072 row 37).
 func NodesOfPlacement(key string) []string {
-	if n, _, _, err := delivery.ParsePlacementKey(key); err == nil {
+	if n, _, _, err := assignerclient.ParseKey(key); err == nil {
 		return []string{n}
 	}
 	return nil
@@ -1318,7 +1323,7 @@ func NodesOfPlacement(key string) []string {
 
 // NodesOfWant is the node a want key names.
 func NodesOfWant(key string) []string {
-	if n, _, err := delivery.ParseWantKey(key); err == nil {
+	if n, _, err := parseWantKey(key); err == nil {
 		return []string{n}
 	}
 	return nil
@@ -1344,7 +1349,7 @@ func (h *Holder) NodesOfModule(module string) []string {
 }
 
 // placedOn is every node a module is placed on, sorted, from the placement's keys in either form
-// (delivery.PlacementsOf; research 072 row 37). A node whose keys do not read whole is read as they stand.
+// (assignerclient.PlacementsOf; research 072 row 37). A node whose keys do not read whole is read as they stand.
 func (h *Holder) placedOn(module string) []string {
 	nodes := map[string]bool{}
 	raw := map[string][]byte{}
@@ -1355,7 +1360,7 @@ func (h *Holder) placedOn(module string) []string {
 			}
 		}
 	}
-	placements, _ := delivery.PlacementsOf(raw)
+	placements, _ := assignerclient.PlacementsOf(raw)
 	for n, p := range placements {
 		for _, m := range p.Modules {
 			if m.Module == module {
@@ -1517,7 +1522,7 @@ func FromCompositions(s Store) Composer {
 	}
 }
 
-// publishedPlan is what the holder reads of a published composition (delivery.Composed): its plan, or the engine's
+// publishedPlan is what the holder reads of a published composition (the node-engine's composed state): its plan, or the engine's
 // refusal. Read leniently, so a field the node-engine adds later is no failure here.
 type publishedPlan struct {
 	Plan    *catalogue.Plan `json:"plan"`
@@ -1526,7 +1531,11 @@ type publishedPlan struct {
 
 // composedAt is a module's key in its node's compositions, or "" for a fingerprint no key can name.
 func composedAt(node, module, fp string) string {
-	k, err := delivery.ComposedKey(node, module, fp)
+	part, err := catalogclient.KeyPart(fp)
+	if err != nil {
+		return ""
+	}
+	k, err := engineclient.ComposedKey(node, module, part)
 	if err != nil {
 		return ""
 	}
@@ -1541,7 +1550,7 @@ func publishedOn(s Store, node string) (map[string]publishedPlan, error) {
 	}
 	out := map[string]publishedPlan{}
 	for _, k := range keys {
-		n, _, _, isNode, err := delivery.ParseComposedKey(k)
+		n, _, _, isNode, err := engineclient.ParseComposedKey(k)
 		if err != nil || isNode || n != node {
 			continue
 		}
@@ -1566,25 +1575,25 @@ func placedModules(s Store, node string) ([]string, map[string]string, error) {
 		return nil, nil, fmt.Errorf("the placement cannot be read: %w", err)
 	}
 	for _, k := range keys {
-		if n, _, _, err := delivery.ParsePlacementKey(k); err != nil || n != node {
+		if n, _, _, err := assignerclient.ParseKey(k); err != nil || n != node {
 			continue
 		}
 		if e, err := s.Get(PlacementRead, k); err == nil && e != nil {
 			raw[k] = e.Value
 		}
 	}
-	placements, _ := delivery.PlacementsOf(raw)
+	placements, _ := assignerclient.PlacementsOf(raw)
 	var placed []string
 	fp2 := map[string]string{}
 	for _, m := range placements[node].Modules {
 		placed = append(placed, m.Module)
-		mk, err := delivery.ModulesKey(m.Module)
+		mk, err := catalogclient.ModulesKey(m.Module)
 		if err != nil {
 			continue
 		}
 		if e, err := s.Get(ModulesRead, mk); err == nil && e != nil {
-			if mod, err := delivery.DecodeModule(e.Value); err == nil {
-				fp2[m.Module] = mod.FP2
+			if mod, err := catalogclient.DecodeModule(e.Value); err == nil {
+				fp2[m.Module] = mod.Fp2
 			}
 		}
 	}
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/holder_integration_test.go b/modules/mesh-provisioner/cmd/mesh-provisioner/holder_integration_test.go
index d4c4706d1..4938b8ea6 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/holder_integration_test.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/holder_integration_test.go
@@ -14,6 +14,9 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
+	catalog "git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
+	builds "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/builds"
 	"strings"
 	"testing"
 	"time"
@@ -24,7 +27,6 @@ import (
 	oc "git.novox.be/novox/mesh-contracts/operator-and-conversation/go/seats/operatorchannel"
 	"git.novox.be/novox/mesh-contracts/provisioning/go/clients/meshprovisionerclient"
 	stdio "git.novox.be/novox/mesh-sdk/go"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 	"git.novox.be/novox/mesh-sdk/go/testbus"
 )
 
@@ -36,7 +38,7 @@ type kvStore struct {
 
 func bucketOf(state string) string {
 	if state == ComposedRead { // the node-engine's named state: here n1's bucket, the one node that composes
-		return delivery.ComposedBucketPrefix + "n1"
+		return "composed-n1"
 	}
 	if owner, name, ok := strings.Cut(state, "."); ok {
 		return owner + "_" + name
@@ -131,9 +133,9 @@ func TestTheHolderPlansProvidesAndAsksOnTheBus(t *testing.T) {
 	mem := goldenMesh(t, c)
 	published(t, mem, c)
 	vaultManifest := `{"module":"mesh-vault","version":"1","state":["bound"]}` // the vault keeps its outcomes as entries
-	vaultDigest := delivery.ManifestDigest([]byte(vaultManifest))
-	vaultValue, _ := delivery.EncodeManifest(delivery.Manifest{Module: meshprovisionerclient.VaultModule, JSON: vaultManifest})
-	mem.write(t, ManifestsRead, mustKey(delivery.ManifestsKey(vaultDigest)), string(vaultValue))
+	vaultDigest := catalogclient.ManifestDigest([]byte(vaultManifest))
+	vaultValue, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: meshprovisionerclient.VaultModule, Manifest: vaultManifest})
+	mem.write(t, ManifestsRead, mustKey(catalogclient.ManifestsKey(vaultDigest)), string(vaultValue))
 	mem.write(t, ModulesRead, meshprovisionerclient.VaultModule, `{"v":1,"none2":"the test's","manifest":"`+vaultDigest+`"}`)
 	for state, keys := range mem.states {
 		for key, raw := range keys {
@@ -226,15 +228,15 @@ func TestTheHolderPlansProvidesAndAsksOnTheBus(t *testing.T) {
 	settled(HaveRead, node+".postgres")
 	// The running build's manifest, as the builder keyed it: one that does not offer the provision keeps the key asked
 	// (ADR 0603 clause 5), one that does lets the have count.
-	buildsKey := mustKey(delivery.BuilderBuildKey("postgres", fpsOf["postgres"]))
+	buildsKey := mustKey(builds.BuilderBuildKey("postgres", fpsOf["postgres"]))
 	offered := func(provides string) {
 		raw := `{"module":"postgres","version":"1","provides":` + provides + `}`
-		digest := delivery.ManifestDigest([]byte(raw))
-		value, _ := delivery.EncodeManifest(delivery.Manifest{Module: "postgres", JSON: raw})
-		if err := s.Put(ManifestsRead, mustKey(delivery.ManifestsKey(digest)), json.RawMessage(value)); err != nil {
+		digest := catalogclient.ManifestDigest([]byte(raw))
+		value, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: "postgres", Manifest: raw})
+		if err := s.Put(ManifestsRead, mustKey(catalogclient.ManifestsKey(digest)), json.RawMessage(value)); err != nil {
 			t.Fatal(err)
 		}
-		build, err := delivery.EncodeBuilderBuild(delivery.BuilderBuild{State: delivery.BuildDone, Manifest: digest})
+		build, err := builds.EncodeBuilderBuild(builds.BuilderBuild{State: builds.BuildDone, Manifest: digest})
 		if err != nil {
 			t.Fatal(err)
 		}
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/holder_test.go b/modules/mesh-provisioner/cmd/mesh-provisioner/holder_test.go
index 183bb333c..00bb0a0bd 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/holder_test.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/holder_test.go
@@ -4,6 +4,11 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	assignerclient "git.novox.be/novox/mesh-contracts/placement/go/clients/meshmoduleassignerclient"
+	meshseat "git.novox.be/novox/mesh-contracts/placement/go/seats/meshmoduleassigner"
+	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
+	catalog "git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
+	builds "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/builds"
 	"go/ast"
 	"go/parser"
 	"go/token"
@@ -18,7 +23,6 @@ import (
 	"git.novox.be/novox/mesh-contracts/provisioning/go/clients/meshprovisionerclient"
 	stdio "git.novox.be/novox/mesh-sdk/go"
 	"git.novox.be/novox/mesh-sdk/go/catalogue"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 )
 
 // router is the operator's channel as the holder asks on it: it holds an ask open, or, like the router past its open
@@ -87,10 +91,10 @@ func newMesh() *mesh {
 	for module, states := range map[string]string{"postgres": `["bound"]`, "keycloak": `["bound"]`, "mesh-vault": `["bound"]`,
 		"systemd-resolved": `[]`, "minio": `[]`} {
 		raw := `{"module":"` + module + `","version":"1","state":` + states + `}`
-		digest := delivery.ManifestDigest([]byte(raw))
-		value, _ := delivery.EncodeManifest(delivery.Manifest{Module: module, JSON: raw})
-		_ = m.s.Put(ManifestsRead, mustKey(delivery.ManifestsKey(digest)), json.RawMessage(value))
-		_ = m.s.Put(ModulesRead, mustKey(delivery.ModulesKey(module)),
+		digest := catalogclient.ManifestDigest([]byte(raw))
+		value, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: module, Manifest: raw})
+		_ = m.s.Put(ManifestsRead, mustKey(catalogclient.ManifestsKey(digest)), json.RawMessage(value))
+		_ = m.s.Put(ModulesRead, mustKey(catalogclient.ModulesKey(module)),
 			json.RawMessage(`{"v":1,"none2":"a test","manifest":"`+digest+`","repository":"novox/mesh-catalog","commit":"c1"}`))
 	}
 	return m
@@ -193,16 +197,16 @@ func TestAKeysStateFollowsItsProvidersOutcome(t *testing.T) {
 	// A have counts as the provider's outcome only from a build whose manifest offers the provision (ADR 0603 clause 5):
 	// refused when the build's manifest is known and does not offer it, provided when it does.
 	bfp := "src2:" + strings.Repeat("bb", 32)
-	buildKey := mustKey(delivery.BuilderBuildKey("systemd-resolved", bfp))
+	buildKey := mustKey(builds.BuilderBuildKey("systemd-resolved", bfp))
 	for _, row := range []struct{ name, provides, state, why string }{
 		{"a build whose manifest does not offer it", `["other"]`, meshprovisionerclient.Asked, "offers split-dns"},
 		{"a build whose manifest offers it", `[{"name":"split-dns"}]`, meshprovisionerclient.Provided, ""},
 	} {
 		raw := `{"module":"systemd-resolved","version":"1","provides":` + row.provides + `}`
-		digest := delivery.ManifestDigest([]byte(raw))
-		value, _ := delivery.EncodeManifest(delivery.Manifest{Module: "systemd-resolved", JSON: raw})
-		_ = m.s.Put(ManifestsRead, mustKey(delivery.ManifestsKey(digest)), json.RawMessage(value))
-		build, err := delivery.EncodeBuilderBuild(delivery.BuilderBuild{State: delivery.BuildDone, Manifest: digest})
+		digest := catalogclient.ManifestDigest([]byte(raw))
+		value, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: "systemd-resolved", Manifest: raw})
+		_ = m.s.Put(ManifestsRead, mustKey(catalogclient.ManifestsKey(digest)), json.RawMessage(value))
+		build, err := builds.EncodeBuilderBuild(builds.BuilderBuild{State: builds.BuildDone, Manifest: digest})
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -222,7 +226,7 @@ func TestAKeysStateFollowsItsProvidersOutcome(t *testing.T) {
 	// provision depends on it (clauses 3, 6).
 	c := newMesh()
 	// The placement in its keys per module and node (research 072 row 37).
-	novox, err := delivery.PlacementValues(delivery.Placement{Node: "novox", Modules: []delivery.PlacedModule{{Module: "mesh-vault"}}})
+	novox, err := assignerclient.PlacementValues(meshseat.Placement{Node: "novox", Modules: []meshseat.PlacedModule{{Module: "mesh-vault"}}})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -507,10 +511,10 @@ func TestTheHolderHoldsNoTimer(t *testing.T) {
 
 // manifestOf puts a provider's manifest into the indexer's reads as the holder finds it.
 func (m *mesh) manifestOf(module, raw string) {
-	digest := delivery.ManifestDigest([]byte(raw))
-	value, _ := delivery.EncodeManifest(delivery.Manifest{Module: module, JSON: raw})
-	_ = m.s.Put(ManifestsRead, mustKey(delivery.ManifestsKey(digest)), json.RawMessage(value))
-	_ = m.s.Put(ModulesRead, mustKey(delivery.ModulesKey(module)),
+	digest := catalogclient.ManifestDigest([]byte(raw))
+	value, _ := catalogclient.EncodeManifest(catalog.ManifestsByDigestValue{Module: module, Manifest: raw})
+	_ = m.s.Put(ManifestsRead, mustKey(catalogclient.ManifestsKey(digest)), json.RawMessage(value))
+	_ = m.s.Put(ModulesRead, mustKey(catalogclient.ModulesKey(module)),
 		json.RawMessage(`{"v":1,"none2":"a test","manifest":"`+digest+`","repository":"novox/mesh-catalog","commit":"c1"}`))
 }
 
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/main.go b/modules/mesh-provisioner/cmd/mesh-provisioner/main.go
index 27b50ad19..cd44b0eaa 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/main.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/main.go
@@ -9,6 +9,7 @@ package main
 import (
 	"context"
 	"fmt"
+	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
 	"os"
 	"strings"
 	"sync"
@@ -18,7 +19,6 @@ import (
 	"git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshconditionsclient"
 	oc "git.novox.be/novox/mesh-contracts/operator-and-conversation/go/seats/operatorchannel"
 	stdio "git.novox.be/novox/mesh-sdk/go"
-	"git.novox.be/novox/mesh-sdk/go/delivery"
 
 	"git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshhandactsclient"
 	"git.novox.be/novox/mesh-sdk/go/views"
@@ -176,20 +176,20 @@ func slowest(took []Took) time.Duration {
 
 // The owners' read tools of the states the provisioner follows, which the manifest invokes (ADR 0615).
 const (
-	PlacementTool = delivery.AssignerModule + ".assigner_read_placement"
-	WantsTool     = delivery.AssignerModule + ".assigner_read_wants"
-	ModulesTool   = delivery.IndexerModule + ".indexer_read_modules"
-	ManifestsTool = delivery.IndexerModule + ".indexer_read_manifests"
+	PlacementTool = assignerModule + ".assigner_read_placement"
+	WantsTool     = assignerModule + ".assigner_read_wants"
+	ModulesTool   = indexerModule + ".indexer_read_modules"
+	ManifestsTool = indexerModule + ".indexer_read_manifests"
 )
 
 // newViews is the provisioner's pictures of the assigner's placement and wants and the indexer's modules and manifests:
 // each asked once of its owner's read tool, then followed by the owner's events (ADR 0615).
 func newViews() *views.Reader {
 	v := &views.Reader{Module: Module, Logf: logf, Findings: meshconditionsclient.FindingWriter{State: stdio.State("findings")}, Acts: meshhandactsclient.Recorder{Ask: stdio.Ask}}
-	v.Follow(delivery.AssignerModule, "placement", PlacementTool)
-	v.Follow(delivery.AssignerModule, "wants", WantsTool)
-	v.Follow(delivery.IndexerModule, "modules", ModulesTool)
-	v.Follow(delivery.IndexerModule, "manifests", ManifestsTool)
+	v.Follow(assignerModule, "placement", PlacementTool)
+	v.Follow(assignerModule, "wants", WantsTool)
+	v.Follow(indexerModule, "modules", ModulesTool)
+	v.Follow(indexerModule, "manifests", ManifestsTool)
 	return v
 }
 
@@ -253,7 +253,7 @@ func main() {
 	follow(ComposedRead, func(c stdio.StateChange) error { w.add(NodesOfNodeKey(c.Key)...); return nil })
 	follow(HaveRead, func(c stdio.StateChange) error { w.add(NodesOfNodeKey(c.Key)...); return nil })
 	follow(ModulesRead, func(c stdio.StateChange) error {
-		if module, err := delivery.ParseModulesKey(c.Key); err == nil {
+		if module, err := catalogclient.ParseModulesKey(c.Key); err == nil {
 			w.add(h.NodesOfModule(module)...)
 		}
 		return nil
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/provisioner_test.go b/modules/mesh-provisioner/cmd/mesh-provisioner/provisioner_test.go
index 4bccbcebe..9fb54ccb2 100644
--- a/modules/mesh-provisioner/cmd/mesh-provisioner/provisioner_test.go
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/provisioner_test.go
@@ -296,10 +296,15 @@ func TestTheManifestDeclaresWhatTheCodeKeeps(t *testing.T) {
 		Consumes   []string          `json:"consumes"`
 		Tools      []string          `json:"tools"`
 		OwnSecrets map[string]string `json:"own-secrets"`
+		Packages   map[string]string `json:"packages"`
 	}
 	if err := json.Unmarshal(raw, &m); err != nil {
 		t.Fatal(err)
 	}
+	// The builder's keys are read through its published package, taken by its series (ADR 0634 §1).
+	if m.Packages["builds"] != "0.1" {
+		t.Errorf("packages %v: want builds of series 0.1", m.Packages)
+	}
 	if m.Module != "mesh-provisioner" || m.RunsAs != "mesh-provisioner" || m.OwnSecrets["broker"] == "" {
 		t.Errorf("an account of its own: module %q, runs-as %q, own secrets %v", m.Module, m.RunsAs, m.OwnSecrets)
 	}
diff --git a/modules/mesh-provisioner/cmd/mesh-provisioner/readers.go b/modules/mesh-provisioner/cmd/mesh-provisioner/readers.go
new file mode 100644
index 000000000..a2515b025
--- /dev/null
+++ b/modules/mesh-provisioner/cmd/mesh-provisioner/readers.go
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+
+	meshwants "git.novox.be/novox/mesh-contracts/placement/go/seats/meshwants"
+)
+
+// The holders whose states this module reads, one constant each (a reader names its holder once; ADR 0634 §4).
+const (
+	assignerModule = "mesh-delivery-assigner"
+	indexerModule  = "mesh-delivery-indexer"
+)
+
+// parseWantKey reads a want's key, `want.<node>.<module>`; the want of a node's own and a held fingerprint's key are
+// not one.
+func parseWantKey(key string) (node, module string, err error) {
+	node, module, ok := meshwants.ParseWantsByWantNodeModuleKey(key)
+	if !ok {
+		return "", "", fmt.Errorf("%q is not the key of a module's want on a node", key)
+	}
+	return node, module, nil
+}
+
+// decodeWant reads a want of a module on a node, as the wants seat types it.
+func decodeWant(value []byte) (meshwants.WantsByWantNodeModuleValue, error) {
+	var w meshwants.WantsByWantNodeModuleValue
+	err := json.Unmarshal(value, &w)
+	return w, err
+}
diff --git a/modules/mesh-provisioner/go.mod b/modules/mesh-provisioner/go.mod
index 9c368615f..c4cdc3cba 100644
--- a/modules/mesh-provisioner/go.mod
+++ b/modules/mesh-provisioner/go.mod
@@ -3,6 +3,13 @@ module mesh-provisioner
 go 1.26.0
 
 require (
+	git.novox.be/novox/mesh-contracts/placement/go/seats/meshwants v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-contracts/go/clients/nodeengineclient v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/builds v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-contracts/placement/go/clients/meshmoduleassignerclient v0.0.0-00010101000000-000000000000
+	git.novox.be/novox/mesh-contracts/placement/go/seats/meshmoduleassigner v0.0.0-00010101000000-000000000000
 	git.novox.be/novox/mesh-contracts/provisioning/go/clients/meshprovisionerclient v0.0.0-00010101000000-000000000000
 	git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshconditionsclient v0.0.0-00010101000000-000000000000
 	git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshhandactsclient v0.0.0-00010101000000-000000000000
diff --git a/modules/mesh-provisioner/module.json b/modules/mesh-provisioner/module.json
index db0a66b75..8cdbc5319 100644
--- a/modules/mesh-provisioner/module.json
+++ b/modules/mesh-provisioner/module.json
@@ -1,6 +1,9 @@
 {
   "module": "mesh-provisioner",
   "version": "2",
+  "packages": {
+    "builds": "0.1"
+  },
   "runs-as": "mesh-provisioner",
   "claims": [
     {