diff --git a/internal/buckets/buckets.go b/internal/buckets/buckets.go
index 0cfa161..7aa1075 100644
--- a/internal/buckets/buckets.go
+++ b/internal/buckets/buckets.go
@@ -5,12 +5,11 @@ package buckets
 
 import (
 	"errors"
+
 	vault "git.novox.be/novox/mesh-contracts/identity-and-access/go/seats/meshvault"
 
-	assigner "git.novox.be/novox/mesh-contracts/placement/go/clients/meshmoduleassignerclient"
 	seat "git.novox.be/novox/mesh-contracts/placement/go/seats/meshmoduleassigner"
 	wants "git.novox.be/novox/mesh-contracts/placement/go/seats/meshwants"
-	catalogclient "git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
 	catalog "git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
 	"git.novox.be/novox/mesh-sdk/go/keys"
 )
@@ -32,23 +31,27 @@ const HaveHistory = 20
 // module as every state is (ADR 0634 §1, finding F4: the holder's name is kept here, in the engine's code).
 const (
 	// Placement holds a node's placement, `<node>.node`, and each of its modules, `<node>.<module>`.
-	Placement = assigner.PlacementBucket
+	Placement = AssignerHolder + "_" + seat.StatePlacement
 	// PlacementCandidates holds a node's candidate of a proposal, `<proposal>.<node>`.
-	PlacementCandidates = assigner.Module + "_" + seat.StateCandidates
+	PlacementCandidates = AssignerHolder + "_" + seat.StateCandidates
 	// Wants holds what each node should run, `want.<node>.<module>` and `want.<node>.node`.
-	Wants = assigner.Module + "_" + wants.StateWants
+	Wants = AssignerHolder + "_" + wants.StateWants
+
+	// AssignerHolder is the module holding the seat mesh-module-assigner and the seat mesh-wants.
+	AssignerHolder = "mesh-delivery-assigner"
 )
 
 // The states of the catalogue seat's holder that the engine reads, named by the holder's module (ADR 0634 §1, finding F4).
 const (
 	// Modules holds a module's source, `<module>`; Manifests a manifest by its digest; Verdicts the judge's verdict of a
 	// manifest by its digest; Candidates a group's candidate, by the group's key part (CandidateKey).
-	Modules    = catalogHolder + "_modules"
-	Manifests  = catalogHolder + "_manifests"
-	Verdicts   = catalogHolder + "_verdicts"
-	Candidates = catalogHolder + "_candidates"
+	Modules    = CatalogHolder + "_modules"
+	Manifests  = CatalogHolder + "_manifests"
+	Verdicts   = CatalogHolder + "_verdicts"
+	Candidates = CatalogHolder + "_candidates"
 
-	catalogHolder = catalogclient.Module
+	// CatalogHolder is the module holding the seat mesh-catalog.
+	CatalogHolder = "mesh-delivery-indexer"
 )
 
 // CandidateKey is the key of a group's candidate in Candidates: the group as a key part, a branch such as `fix/1.2`
diff --git a/internal/buckets/buckets_test.go b/internal/buckets/buckets_test.go
index d24750b..cedb16b 100644
--- a/internal/buckets/buckets_test.go
+++ b/internal/buckets/buckets_test.go
@@ -54,3 +54,18 @@ func TestACandidateKeyEscapesTheGroup(t *testing.T) {
 		t.Error("a key was made for no group")
 	}
 }
+
+// The holders' buckets are the names the grants part grants and the holders' manifests declare: no client carries a
+// holder (ADR 0625 §4), so these rows are the one place the node-engine's code says them.
+func TestTheHoldersBucketsAreTheirStatesBuckets(t *testing.T) {
+	for name, c := range map[string][2]string{
+		"Placement": {Placement, "mesh-delivery-assigner_placement"}, "PlacementCandidates": {PlacementCandidates, "mesh-delivery-assigner_candidates"},
+		"Wants": {Wants, "mesh-delivery-assigner_wants"}, "Modules": {Modules, "mesh-delivery-indexer_modules"},
+		"Manifests": {Manifests, "mesh-delivery-indexer_manifests"}, "Verdicts": {Verdicts, "mesh-delivery-indexer_verdicts"},
+		"Candidates": {Candidates, "mesh-delivery-indexer_candidates"},
+	} {
+		if c[0] != c[1] {
+			t.Errorf("%s = %q, want %q", name, c[0], c[1])
+		}
+	}
+}
diff --git a/internal/compose/frombus/states.go b/internal/compose/frombus/states.go
index d59d302..0eb785d 100644
--- a/internal/compose/frombus/states.go
+++ b/internal/compose/frombus/states.go
@@ -12,6 +12,9 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
+	"strings"
+	"time"
+
 	"git.novox.be/novox/mesh-contracts/go/clients/nodeengineclient"
 	"git.novox.be/novox/mesh-contracts/go/seats/nodeengine"
 	"git.novox.be/novox/mesh-contracts/placement/go/clients/meshmoduleassignerclient"
@@ -19,19 +22,18 @@ import (
 	"git.novox.be/novox/mesh-delivery/contracts/go/clients/meshcatalogclient"
 	"git.novox.be/novox/mesh-delivery/contracts/go/seats/meshcatalog"
 	"git.novox.be/novox/mesh-delivery/modules/mesh-delivery-builder/builds"
+	"github.com/novox/mesh-host/internal/buckets"
 	"github.com/novox/mesh-host/internal/compose"
 	"github.com/novox/mesh-host/internal/compose/resolution"
-	"strings"
-	"time"
 )
 
 // The states a module names in its manifest's `reads` to compose through StatesReader.
 const (
 	// The holders' names are kept here, in the engine's own code, as the names of the states a manifest's reads use
 	// (ADR 0634 §1, finding F4); a seat's contract names a state locally, not the module that holds it.
-	PlacementRead = meshmoduleassignerclient.PlacementRead
-	ModulesRead   = meshcatalogclient.ModulesRead
-	ManifestsRead = meshcatalogclient.ManifestsRead
+	PlacementRead = buckets.AssignerHolder + ".placement"
+	ModulesRead   = buckets.CatalogHolder + ".modules"
+	ManifestsRead = buckets.CatalogHolder + ".manifests"
 	BuildsRead    = builds.BuilderModule + ".builds"
 	HaveRead      = "node-engine.have"
 	ResolvedRead  = "mesh-config.resolved"