diff --git a/node-tools/cmd/node-tools/main.go b/node-tools/cmd/node-tools/main.go
index 7c821fc..7da745a 100644
--- a/node-tools/cmd/node-tools/main.go
+++ b/node-tools/cmd/node-tools/main.go
@@ -50,6 +50,8 @@ func main() {
 	until := time.Now().Add(startWait)
 	cred := credential(until)
 	conn := connectPatiently(cred, until)
+	// And the seat list it describes the seats by, read through the seat mesh-catalog (novox/hq ADR 0636 §4).
+	_ = startSeatList(conn)
 
 	served, err := runtime.ServedModulesFrom(os.Getenv(runtime.ToolModules), cred.Module)
 	if err != nil {
diff --git a/node-tools/cmd/node-tools/seatlist.go b/node-tools/cmd/node-tools/seatlist.go
new file mode 100644
index 0000000..ad53c10
--- /dev/null
+++ b/node-tools/cmd/node-tools/seatlist.go
@@ -0,0 +1,53 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"strings"
+
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+	"git.novox.be/novox/mesh-sdk/go/seatdef"
+	"git.novox.be/novox/mesh-sdk/go/seatlist"
+	"github.com/novox/mesh-tools/node-tools/internal/bus"
+)
+
+// The tool runner reads the seat list as every part does (novox/hq ADR 0635 §1, ADR 0636): through the seat mesh-catalog,
+// from the bootstrapped definitions until it has been read, and following the seat's events. What it holds is given to
+// catalogue at every change; the console describes the seats from it, so the descriptions are the mesh's own and not a
+// list compiled into the runner.
+
+// busOfTheRunner is the reader's bus over the runner's connection: a verb of the seat asked on its subject, an event heard
+// on the seat's event subject.
+type busOfTheRunner struct{ conn *bus.Conn }
+
+func (b busOfTheRunner) Ask(key string, body any) (json.RawMessage, error) {
+	seat, verb, _ := strings.Cut(strings.TrimPrefix(key, "seat:"), ".")
+	answered, err := b.conn.Ask(key, body, "mesh.seat."+seat+".tool."+verb)
+	if err != nil {
+		return nil, err
+	}
+	return answered.Result, nil
+}
+
+func (b busOfTheRunner) Subscribe(pattern string, handle func(string, json.RawMessage) error) error {
+	seat, event, _ := strings.Cut(pattern, ".")
+	_, err := b.conn.Raw(seatdef.EventSubject(seat, event), func(_ string, data []byte) []byte {
+		_ = handle(pattern, data)
+		return nil // an event is answered by nobody
+	})
+	return err
+}
+
+// startSeatList starts the runner's reader and gives catalogue its bootstrapped seats at once.
+func startSeatList(conn *bus.Conn) *seatlist.Reader {
+	reader, err := seatlist.Start(seatlist.Config{Bus: busOfTheRunner{conn}, Bootstrap: seatlist.Bootstrapped(),
+		OnChange: func(seats []catalogue.Seat) { catalogue.UseSeats(seats) }})
+	if err != nil {
+		log.Printf("node-tools: %v", fmt.Errorf("the tool runner cannot follow the seat list: %w", err))
+	}
+	if reader != nil {
+		catalogue.UseSeats(reader.Seats())
+	}
+	return reader
+}
diff --git a/node-tools/go.mod b/node-tools/go.mod
index 1138870..3d1ed80 100644
--- a/node-tools/go.mod
+++ b/node-tools/go.mod
@@ -3,6 +3,8 @@ module github.com/novox/mesh-tools/node-tools
 go 1.26.0
 
 require (
+	git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshconditionsclient v0.0.0-20261105000000-000000000000
+	git.novox.be/novox/mesh-contracts/health-and-repair/go/seats/meshconditions v0.0.0-20261105000000-000000000000
 	github.com/nats-io/nats.go v1.54.0
 	golang.org/x/sys v0.48.0
 )
diff --git a/node-tools/internal/console/address.go b/node-tools/internal/console/address.go
index f4604b5..64c21ec 100644
--- a/node-tools/internal/console/address.go
+++ b/node-tools/internal/console/address.go
@@ -321,7 +321,7 @@ func indexOn(conn *bus.Conn, src Source, held announce.Known, before func(announ
 
 	// What should have answered: every assignment of a module that declares tools. Silence is named;
 	// a module with no tools is never a name here.
-	x.Replaces = replacesOf(catalogue.DefaultSeats(), recorded)
+	x.Replaces = replacesOf(catalogue.Seats(), recorded)
 	for _, m := range recorded {
 		if !m.Tools {
 			continue
diff --git a/node-tools/internal/console/manifest_waits_test.go b/node-tools/internal/console/manifest_waits_test.go
index d651d68..150389a 100644
--- a/node-tools/internal/console/manifest_waits_test.go
+++ b/node-tools/internal/console/manifest_waits_test.go
@@ -36,8 +36,8 @@ func TestTheManifestNamesTheFirstFamiliesOneByOne(t *testing.T) {
 		}
 	}
 	// A wait is no consumer (ADR 0367 §2): what it consumes is the four views families of its first views (ADR 0615 §5, issue
-	// 1966 TLS-5), and nothing else.
-	wantConsumes := []string{"mesh-delivery-assigner.views.placement", "mesh-delivery-assigner.views.seat-holders",
+	// 1966 TLS-5) and the two events of the seat that serves the seat list (ADR 0636 §4), and nothing else.
+	wantConsumes := []string{"mesh-catalog.seat-definition-changed", "mesh-catalog.seat-definition-removed", "mesh-delivery-assigner.views.placement", "mesh-delivery-assigner.views.seat-holders",
 		"mesh-delivery-indexer.views.manifests", "mesh-delivery-indexer.views.modules"}
 	if !reflect.DeepEqual(m.Consumes, wantConsumes) {
 		t.Errorf("the tool runner consumes %v, want %v", m.Consumes, wantConsumes)
diff --git a/node-tools/internal/console/mcp.go b/node-tools/internal/console/mcp.go
index 70490d6..ee93c89 100644
--- a/node-tools/internal/console/mcp.go
+++ b/node-tools/internal/console/mcp.go
@@ -75,7 +75,7 @@ func (s *Surface) seatsAnswer() map[string]any {
 	placed, err := seatHoldersOn(s.src)
 	x := &index{Placed: placed}
 	seats := []map[string]any{}
-	for _, st := range catalogue.DefaultSeats() {
+	for _, st := range catalogue.Seats() {
 		holders := x.placedHolders(st.Name, "")
 		if holders == nil {
 			holders = []delivery.SeatHolder{}
diff --git a/node-tools/internal/console/search_test.go b/node-tools/internal/console/search_test.go
index c624a07..821072f 100644
--- a/node-tools/internal/console/search_test.go
+++ b/node-tools/internal/console/search_test.go
@@ -46,7 +46,7 @@ func meshToSearch(t *testing.T) *index {
 			Description: does, Subject: "mesh.mod.docker.tool." + tool + ".anchor"})
 	}
 	x, _, _ := indexOfEndpoints(endpoints)
-	x.Replaces = replacesOf(catalogue.DefaultSeats(), []recordedModule{{Module: "docker", On: []string{"anchor"}, Tools: true,
+	x.Replaces = replacesOf(catalogue.Seats(), []recordedModule{{Module: "docker", On: []string{"anchor"}, Tools: true,
 		Replaces: map[string][]string{"docker_list": {"docker ps"}, "docker_logs": {"docker logs"}, "docker_restart": {"docker restart"}}}})
 	return x
 }
diff --git a/node-tools/internal/console/seats_for_tests_test.go b/node-tools/internal/console/seats_for_tests_test.go
new file mode 100644
index 0000000..834bc56
--- /dev/null
+++ b/node-tools/internal/console/seats_for_tests_test.go
@@ -0,0 +1,10 @@
+package console
+
+import (
+	"git.novox.be/novox/mesh-sdk/go/catalogue"
+	"git.novox.be/novox/mesh-sdk/go/seatlist/seatlisttest"
+)
+
+// The seats the tests describe are given to catalogue as the tool runner gives the ones it read from the bus
+// (novox/hq ADR 0635 §1); catalogue compiles none.
+func init() { catalogue.UseSeats(catalogue.SeatsFromDefinitions(seatlisttest.Definitions())) }
diff --git a/node-tools/internal/firstview/firstview.go b/node-tools/internal/firstview/firstview.go
index c4b23c9..e672aa3 100644
--- a/node-tools/internal/firstview/firstview.go
+++ b/node-tools/internal/firstview/firstview.go
@@ -11,6 +11,8 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	conditions "git.novox.be/novox/mesh-contracts/health-and-repair/go/clients/meshconditionsclient"
+	condseat "git.novox.be/novox/mesh-contracts/health-and-repair/go/seats/meshconditions"
 	"sort"
 	"sync"
 	"time"
@@ -135,7 +137,7 @@ func (v *Views) hear(env bus.Envelope) error {
 
 // finding writes or removes the runner's finding of a first view unanswered past its bound, in its own state.
 func (v *Views) finding(st views.Status, raised bool) {
-	key, value, err := views.UnansweredFinding(v.deps.Module, st, time.Now())
+	key, value, err := conditionOf(views.UnansweredFinding(v.deps.Module, st, time.Now()))
 	if err != nil {
 		v.logf("[mesh-tools] the finding of the first view %s is not made: %v", st.Tool, err)
 		return
@@ -198,3 +200,21 @@ func (v *Views) Again(ctx context.Context, why string) []error {
 	}
 	return errs
 }
+
+// conditionOf is a finding in the layout of the seat mesh-conditions' state findings (its contract, ADR 0634 §1), about a
+// module, a warning.
+func conditionOf(f views.Finding) (string, []byte, error) {
+	key := conditions.Key(scopeModule, f.ID, f.Kind)
+	v := condseat.FindingsByKeyValue{V: 1, Key: key, Kind: f.Kind, Observer: f.Observer, Severity: conditions.Warning,
+		Subject: condseat.Subject{Scope: scopeModule, ID: f.ID}, Summary: f.Summary, Headline: f.Headline,
+		Explanation: f.Explanation, Source: f.Observer + "." + f.Kind, At: f.At.UTC().Format(time.RFC3339),
+		Evidence: []condseat.Evidence{{At: f.At.UTC().Format(time.RFC3339), Said: f.Summary}}}
+	if err := conditions.CheckFinding(v); err != nil {
+		return "", nil, err
+	}
+	raw, err := json.Marshal(v)
+	return key, raw, err
+}
+
+// scopeModule is the scope of a finding about a module.
+const scopeModule = "module"
diff --git a/node-tools/module.json b/node-tools/module.json
index f3bec56..08b4f05 100644
--- a/node-tools/module.json
+++ b/node-tools/module.json
@@ -71,6 +71,8 @@
     "findings"
   ],
   "consumes": [
+    "mesh-catalog.seat-definition-changed",
+    "mesh-catalog.seat-definition-removed",
     "mesh-delivery-assigner.views.placement",
     "mesh-delivery-assigner.views.seat-holders",
     "mesh-delivery-indexer.views.manifests",