diff --git a/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/main.go b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/main.go
index acb10be9..c34f3925 100644
--- a/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/main.go
+++ b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/main.go
@@ -116,6 +116,8 @@ func run(ctx context.Context, getenv func(string) string, logOut io.Writer) erro
 	fills := &pipeline.Fills{Read: storeFills(ctx, js, cred, time.Now), Logf: logger.Printf,
 		Say: func(event string, f seat.Fill) error { return say("mesh.seat."+seat.Seat+".event."+event, f) }}
 	hearer.Fills = fills
+	// A pipeline's end names what its change widens (§71, A-207), computed by this running runner from the catalog and the grants part.
+	hearer.Widens = widenerOf(calls.Call).Widens
 	hearer.LogLast = stepLog{ctx: ctx, js: js, module: cred.Module}.Last
 	hearer.Where = routerRecordOf(cred.Module, calls.Call, calls.Ask)
 	hearer.Failures = &pipeline.Failures{Findings: rv.Findings, Observer: cred.Module, Author: commitAuthor(calls.Call), Logf: logger.Printf}
diff --git a/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens.go b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens.go
new file mode 100644
index 00000000..7d1bd889
--- /dev/null
+++ b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+
+	"git.novox.be/novox/mesh-contracts/identity-and-access/go/seats/meshgrants"
+	catalog "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshcatalog"
+	"git.novox.be/novox/mesh-sdk/go/buscalls"
+	"git.novox.be/novox/mesh-sdk/go/keys"
+	"git.novox.be/novox/mesh-sdk/go/seatlist"
+
+	"mesh-delivery-pipeline/internal/pipeline"
+)
+
+// widenerOf is the runner's computation of `widens` (design 47 G §71, A-207, A-215, A-220) over its calls: the catalog seat's
+// `revision` for the candidate and the branch's newest, the holders from the seat holders' one reading, and the grants part's
+// `grants-for`; no other verb.
+func widenerOf(call func(key string, body any) (json.RawMessage, error)) *pipeline.Widener {
+	return &pipeline.Widener{
+		Revision: catalogRevision(call),
+		Holder:   func(s string) (string, error) { return seatlist.HolderOf(call, s) },
+		GrantsFor: func(branch string, source int64) (meshgrants.GrantsFor, error) {
+			return grantsFor(call, branch, source)
+		},
+	}
+}
+
+// catalogRevision reads one revision of a branch whole, page by page; revision 0 asks the newest (§195).
+func catalogRevision(call func(string, any) (json.RawMessage, error)) func(string, int64) (pipeline.Half, error) {
+	return func(branch string, revision int64) (pipeline.Half, error) {
+		in := catalog.RevisionInput{Branch: keys.EscapeName(branch), Revision: revision}
+		var half pipeline.Half
+		for {
+			raw, err := call("seat:"+catalog.Seat+"."+catalog.VerbRevision, in)
+			if err != nil {
+				return pipeline.Half{}, err
+			}
+			answer, said, ok := buscalls.Unwrap(raw)
+			if !ok {
+				return pipeline.Half{}, fmt.Errorf("%s answered: %s", catalog.VerbRevision, said)
+			}
+			var a catalog.RevisionAnswer
+			if err := json.Unmarshal(answer, &a); err != nil {
+				return pipeline.Half{}, fmt.Errorf("%s answered no revision: %w", catalog.VerbRevision, err)
+			}
+			if a.NoneYet || a.Revision == nil {
+				return pipeline.Half{}, fmt.Errorf("%s holds no revision %d of %s", catalog.VerbRevision, revision, branch)
+			}
+			if half.Entries == nil {
+				half = pipeline.Half{Revision: a.Revision.Revision, Source: a.Revision.Source, Entries: map[string]catalog.CatalogEntry{}}
+				in.Revision = a.Revision.Revision // the pages of one revision, though a newer one is said between them
+			}
+			for _, e := range a.Entries {
+				half.Entries[e.Module] = e
+			}
+			if a.Next == "" {
+				return half, nil
+			}
+			in.After = a.Next
+		}
+	}
+}
+
+// grantsFor asks the grants part what it would compose for the candidate's source revision on its branch.
+func grantsFor(call func(string, any) (json.RawMessage, error), branch string, source int64) (meshgrants.GrantsFor, error) {
+	raw, err := call("seat:"+meshgrants.Seat+"."+meshgrants.VerbGrantsFor, meshgrants.GrantsForInput{Branch: branch, Source: strconv.FormatInt(source, 10)})
+	if err != nil {
+		return meshgrants.GrantsFor{}, err
+	}
+	answer, said, ok := buscalls.Unwrap(raw)
+	if !ok {
+		return meshgrants.GrantsFor{}, fmt.Errorf("%s answered: %s", meshgrants.VerbGrantsFor, said)
+	}
+	var g meshgrants.GrantsFor
+	if err := json.Unmarshal(answer, &g); err != nil {
+		return meshgrants.GrantsFor{}, fmt.Errorf("%s answered no grants: %w", meshgrants.VerbGrantsFor, err)
+	}
+	return g, nil
+}
diff --git a/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens_test.go b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens_test.go
new file mode 100644
index 00000000..785819c9
--- /dev/null
+++ b/modules/mesh-delivery-pipeline/cmd/mesh-delivery-pipeline/widens_test.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"encoding/json"
+	"strings"
+	"testing"
+)
+
+// The runner reads a revision whole, page by page, of the revision the first page named, and the candidate by its number; the grants
+// part is asked with the source revision (design 47 G §195, §441, A-207).
+func TestWidenerReadsARevisionWholeAndAsksGrantsFor(t *testing.T) {
+	var asked []string
+	call := func(key string, body any) (json.RawMessage, error) {
+		raw, _ := json.Marshal(body)
+		asked = append(asked, key+" "+string(raw))
+		switch {
+		case strings.HasSuffix(key, ".grants-for"):
+			return json.RawMessage(`{"modules":[{"module":"app","added":[{"subject":"s","verb":"v"}],"removed":[]}]}`), nil
+		case strings.Contains(string(raw), `"after":"a"`):
+			return json.RawMessage(`{"revision":{"revision":8,"kind":"trunk","entries":[]},"entries":[{"module":"b","commit":"c","repository":"r","manifest":{}}]}`), nil
+		}
+		return json.RawMessage(`{"revision":{"revision":8,"kind":"trunk","entries":[]},"next":"a","entries":[{"module":"a","commit":"c","repository":"r","manifest":{}}]}`), nil
+	}
+	half, err := catalogRevision(call)("feat/x", 0)
+	if err != nil || half.Revision != 8 || len(half.Entries) != 2 {
+		t.Fatalf("half %+v, %v", half, err)
+	}
+	if !strings.Contains(asked[0], `"branch":"feat`) || !strings.Contains(asked[1], `"revision":8`) || strings.Contains(asked[0], `"revision"`) {
+		t.Errorf("asked %v: the first page names no revision, the next the one the first answered", asked)
+	}
+	g, err := grantsFor(call, "main", 31)
+	if err != nil || len(g.Modules) != 1 || !strings.Contains(asked[len(asked)-1], `"source":"31"`) {
+		t.Errorf("grants %+v, %v, asked %v", g, err, asked)
+	}
+}
diff --git a/modules/mesh-delivery-pipeline/go.mod b/modules/mesh-delivery-pipeline/go.mod
index 2f4e727f..fcf1ddc3 100644
--- a/modules/mesh-delivery-pipeline/go.mod
+++ b/modules/mesh-delivery-pipeline/go.mod
@@ -32,3 +32,5 @@ require (
 require git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshwants v0.0.0-00010101000000-000000000000
 
 require git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshdelivery v0.0.0-00010101000000-000000000000
+
+require git.novox.be/novox/mesh-contracts/identity-and-access/go/seats/meshgrants v0.0.0-00010101000000-000000000000
diff --git a/modules/mesh-delivery-pipeline/internal/pipeline/steps.go b/modules/mesh-delivery-pipeline/internal/pipeline/steps.go
index f94e9c6f..0ced7338 100644
--- a/modules/mesh-delivery-pipeline/internal/pipeline/steps.go
+++ b/modules/mesh-delivery-pipeline/internal/pipeline/steps.go
@@ -115,6 +115,8 @@ type Hearer struct {
 	Ager *Ager
 	// Fills says the stores' fill at each step's end (§366); nil says none.
 	Fills *Fills
+	// Widens computes the widens a pipeline-ended carries (§71, A-207); nil carries none.
+	Widens func(seat.Pipeline) []seat.Widening
 }
 
 func (h *Hearer) now() time.Time {
@@ -254,7 +256,11 @@ func (h *Hearer) say(event string, p seat.Pipeline, step *seat.StepResult) error
 		return h.Say(subject, seat.StepEvent{V: 1, At: &at, Pipeline: p.Pipeline, Branch: p.Branch, Module: p.Module, Commit: p.Commit,
 			Fingerprint: p.Fingerprint, Group: p.Group, Revision: p.Revision, Source: p.Source, Result: *step})
 	case seat.EventPipelineEnded:
-		return h.Say(subject, pipelineEnded(p))
+		e := pipelineEnded(p)
+		if h.Widens != nil {
+			e.Widens = h.Widens(p)
+		}
+		return h.Say(subject, e)
 	default:
 		return h.Say(subject, seat.Wait{V: 1, Pipeline: p.Pipeline, Branch: p.Branch, Module: p.Module, Commit: p.Commit, Fingerprint: p.Fingerprint,
 			Group: p.Group, Revision: p.Revision, Source: p.Source, Step: seat.StepResultStepApproval, On: "operator", Since: at})
diff --git a/modules/mesh-delivery-pipeline/internal/pipeline/widens.go b/modules/mesh-delivery-pipeline/internal/pipeline/widens.go
new file mode 100644
index 00000000..971a2698
--- /dev/null
+++ b/modules/mesh-delivery-pipeline/internal/pipeline/widens.go
@@ -0,0 +1,179 @@
+package pipeline
+
+import (
+	"fmt"
+	"sort"
+	"time"
+
+	"git.novox.be/novox/mesh-contracts/identity-and-access/go/seats/meshgrants"
+	catalog "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshcatalog"
+	seat "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshpipelinerunner"
+)
+
+// ComposerSeat is the seat of the composer, the node-engine's mesh-compose (design 47 G A-167, A-220): a part serving a step.
+const ComposerSeat = "node-engine"
+
+// Widener computes a pipeline's `widens` (design 47 G §71, §275, §335, §441, A-207, A-215): the pipeline's own revision, the
+// candidate, against the branch's newest revision, both read through the catalog seat's `revision`, and the permissions from the
+// grants part's `grants-for`; no other verb. A widening is said, never refused: a read that fails says `could not run`.
+type Widener struct {
+	// Revision reads one catalog revision of a watched branch whole; revision 0 is the branch's newest.
+	Revision func(branch string, revision int64) (Half, error)
+	// Holder is the module that holds a seat, from the seat holders' one reading; an error when it cannot be read or none holds it.
+	Holder func(seat string) (string, error)
+	// GrantsFor asks the seat mesh-grants' verb grants-for for the candidate's source revision on the branch.
+	GrantsFor func(branch string, source int64) (meshgrants.GrantsFor, error)
+}
+
+// Widens names each part serving a step the change alters (the holders of the runner's seat, the catalog's, each of the pipeline's
+// steps' and the composer's, whose entry's fingerprint moved), each acting rule of the pipeline's module that is gained, matches
+// more or is held longer, each own secret or credential provision it names that it did not, and each grant the grants part adds.
+func (w *Widener) Widens(p seat.Pipeline) []seat.Widening {
+	if w == nil || w.Revision == nil {
+		return nil
+	}
+	could := func(name, said string) []seat.Widening {
+		return []seat.Widening{{What: seat.WideningWhatCouldNotRun, Name: name, Said: said}}
+	}
+	cand, err := w.Revision(p.Branch, p.Revision)
+	if err != nil {
+		return could("mesh-catalog", fmt.Sprintf("the candidate's revision %d is not read: %v", p.Revision, err))
+	}
+	newest, err := w.Revision(p.Branch, 0)
+	if err != nil {
+		return could("mesh-catalog", fmt.Sprintf("the branch's newest revision is not read: %v", err))
+	}
+	var out []seat.Widening
+	for _, s := range servingSeats(p) {
+		holder, err := w.Holder(s)
+		if err != nil {
+			out = append(out, seat.Widening{What: seat.WideningWhatCouldNotRun, Name: s, Said: fmt.Sprintf("the holder of %s is not read: %v", s, err)})
+			continue
+		}
+		before, after := newest.Entries[holder], cand.Entries[holder]
+		if after.Fp != "" && after.Fp != before.Fp {
+			out = append(out, seat.Widening{What: seat.WideningWhatServingPart, Name: holder,
+				Said: fmt.Sprintf("serves %s; its fingerprint is %s, was %s", s, after.Fp, before.Fp)})
+		}
+	}
+	out = append(out, ruleWidens(p.Module, newest.Entries[p.Module], cand.Entries[p.Module])...)
+	out = append(out, credentialWidens(p.Module, newest.Entries[p.Module], cand.Entries[p.Module])...)
+	if w.GrantsFor != nil {
+		g, err := w.GrantsFor(p.Branch, p.Source)
+		switch {
+		case err != nil:
+			out = append(out, seat.Widening{What: seat.WideningWhatCouldNotRun, Name: "mesh-grants", Said: err.Error()})
+		case g.Error != "":
+			out = append(out, seat.Widening{What: seat.WideningWhatCouldNotRun, Name: "mesh-grants", Said: g.Error})
+		default:
+			for _, m := range g.Modules {
+				if m.Module != p.Module {
+					continue
+				}
+				for _, a := range m.Added {
+					out = append(out, seat.Widening{What: seat.WideningWhatGrant, Name: m.Module + " " + a.Subject + " " + a.Verb,
+						Said: "the grants part would compose it, and the branch's newest does not hold it"})
+				}
+			}
+		}
+	}
+	order := map[string]int{seat.WideningWhatServingPart: 0, seat.WideningWhatActingRule: 1, seat.WideningWhatCredential: 2,
+		seat.WideningWhatGrant: 3, seat.WideningWhatCouldNotRun: 4}
+	sort.SliceStable(out, func(i, j int) bool {
+		if order[out[i].What] != order[out[j].What] {
+			return order[out[i].What] < order[out[j].What]
+		}
+		return out[i].Name < out[j].Name
+	})
+	return out
+}
+
+// servingSeats are the seats whose holders serve a step of p (A-220): the runner's, the catalog's, the composer's and each step's.
+func servingSeats(p seat.Pipeline) []string {
+	set := map[string]bool{seat.Seat: true, catalog.Seat: true, ComposerSeat: true}
+	for _, s := range p.Steps {
+		if s.Seat != "" {
+			set[s.Seat] = true
+		}
+	}
+	var out []string
+	for s := range set {
+		out = append(out, s)
+	}
+	sort.Strings(out)
+	return out
+}
+
+// ruleWidens names each acting rule of the candidate's entry that the newest entry has not, or that now names more entries
+// (`every` where it named a language) or holds longer (A-215).
+func ruleWidens(module string, before, after catalog.CatalogEntry) []seat.Widening {
+	on := func(s string) string {
+		if s == "" {
+			return "every"
+		}
+		return s
+	}
+	var out []seat.Widening
+	for _, r := range after.Acts {
+		name := module + " " + r.Seat + "." + r.Step
+		var was *catalog.ActingRule
+		for i := range before.Acts {
+			if before.Acts[i].Seat == r.Seat && before.Acts[i].Step == r.Step {
+				was = &before.Acts[i]
+			}
+		}
+		switch {
+		case was == nil:
+			out = append(out, seat.Widening{What: seat.WideningWhatActingRule, Name: name, Said: "the rule is gained"})
+		case on(r.On) == "every" && on(was.On) != "every":
+			out = append(out, seat.Widening{What: seat.WideningWhatActingRule, Name: name, Said: "the rule acts on every entry, it acted on " + was.On})
+		case longer(r.Bound, was.Bound):
+			out = append(out, seat.Widening{What: seat.WideningWhatActingRule, Name: name, Said: "the bound is " + r.Bound + ", it was " + was.Bound})
+		}
+	}
+	return out
+}
+
+func longer(a, b string) bool {
+	x, err1 := time.ParseDuration(a)
+	y, err2 := time.ParseDuration(b)
+	return err1 == nil && err2 == nil && x > y
+}
+
+// credentialWidens names each own secret and each provision with a credential of its own that the candidate's manifest names and
+// the newest entry's did not (A-215).
+func credentialWidens(module string, before, after catalog.CatalogEntry) []seat.Widening {
+	was := map[string]bool{}
+	for _, n := range credentialsOf(before.Manifest) {
+		was[n] = true
+	}
+	var out []seat.Widening
+	for _, n := range credentialsOf(after.Manifest) {
+		if !was[n] {
+			out = append(out, seat.Widening{What: seat.WideningWhatCredential, Name: module + " " + n, Said: "the manifest names it, and the branch's newest does not"})
+		}
+	}
+	return out
+}
+
+// credentialsOf are the names of the own secrets a manifest declares and of the provisions that carry a credential: an own secret
+// of the provider, one issued by software or one only a person gives.
+func credentialsOf(manifest map[string]any) []string {
+	var out []string
+	if secrets, ok := manifest["secrets"].(map[string]any); ok {
+		for n := range secrets {
+			out = append(out, n)
+		}
+	}
+	if provides, ok := manifest["provides"].([]any); ok {
+		for _, o := range provides {
+			if m, ok := o.(map[string]any); ok && m["credential"] != nil {
+				if n, ok := m["name"].(string); ok {
+					out = append(out, n)
+				}
+			}
+		}
+	}
+	sort.Strings(out)
+	return out
+}
diff --git a/modules/mesh-delivery-pipeline/internal/pipeline/widens_test.go b/modules/mesh-delivery-pipeline/internal/pipeline/widens_test.go
new file mode 100644
index 00000000..fd55b595
--- /dev/null
+++ b/modules/mesh-delivery-pipeline/internal/pipeline/widens_test.go
@@ -0,0 +1,108 @@
+package pipeline
+
+import (
+	"errors"
+	"strings"
+	"testing"
+
+	"git.novox.be/novox/mesh-contracts/identity-and-access/go/seats/meshgrants"
+	catalog "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshcatalog"
+	seat "git.novox.be/novox/mesh-delivery/modules/mesh-delivery-contracts/go/seats/meshpipelinerunner"
+)
+
+func entry(module, fp string, acts []catalog.ActingRule, manifest map[string]any) catalog.CatalogEntry {
+	return catalog.CatalogEntry{Module: module, Fp: fp, Acts: acts, Manifest: manifest}
+}
+
+func halfOf(rev int64, es ...catalog.CatalogEntry) Half {
+	h := Half{Revision: rev, Entries: map[string]catalog.CatalogEntry{}}
+	for _, e := range es {
+		h.Entries[e.Module] = e
+	}
+	return h
+}
+
+// widens compares the pipeline's own revision with the branch's newest: the serving parts found by the holder of the seats
+// (the runner, the catalog, each step's seat, the node-engine) by fingerprint, an acting rule gained, matching more or held longer, a
+// credential named that was not, and the grants the grants part adds; each is said by name, a grants part that does not answer says
+// `could not run` and nothing is refused (design 47 G §71, §275, §441, A-207, A-215, A-220).
+func TestWidensIsTheCandidateAgainstTheNewest(t *testing.T) {
+	p := seat.Pipeline{Pipeline: "main.8.app", Module: "app", Branch: "main", Source: 31, Revision: 8,
+		Steps: []seat.StepResult{{Step: "unit", Seat: "node-build-go"}, {Step: "lint", Seat: "node-build-go"}, {Step: "approval"}}}
+	holders := map[string]string{seat.Seat: "runner", catalog.Seat: "indexer", "node-build-go": "build-go", "node-engine": "host"}
+	rule := func(on, bound string) []catalog.ActingRule {
+		return []catalog.ActingRule{{Seat: "node-build-go", Step: "check", On: on, Bound: bound}}
+	}
+	newest := halfOf(9,
+		entry("runner", "fp-1", nil, nil), entry("indexer", "fp-1", nil, nil), entry("build-go", "fp-1", nil, nil), entry("host", "fp-1", nil, nil),
+		entry("app", "fp-1", rule("go", "10m"), map[string]any{"secrets": map[string]any{"token": "/x"}, "provides": []any{"db"}}))
+	cases := []struct {
+		name      string
+		cand      Half
+		grants    meshgrants.GrantsFor
+		grantsErr error
+		want      []string
+	}{
+		{"nothing changes", newest, meshgrants.GrantsFor{}, nil, nil},
+		{"a serving part's fingerprint moves", halfOf(8, entry("build-go", "fp-2", nil, nil), entry("host", "fp-1", nil, nil), entry("indexer", "fp-1", nil, nil),
+			entry("runner", "fp-1", nil, nil), newest.Entries["app"]), meshgrants.GrantsFor{}, nil, []string{"serving part build-go"}},
+		{"an acting rule is gained", halfOf(8, entry("app", "fp-1", append(rule("go", "10m"), catalog.ActingRule{Seat: "x", Step: "grant"}), newest.Entries["app"].Manifest)),
+			meshgrants.GrantsFor{}, nil, []string{"acting rule app x.grant"}},
+		{"an acting rule matches more", halfOf(8, entry("app", "fp-1", rule("every", "10m"), newest.Entries["app"].Manifest)), meshgrants.GrantsFor{}, nil,
+			[]string{"acting rule app node-build-go.check"}},
+		{"an acting rule is held longer", halfOf(8, entry("app", "fp-1", rule("go", "1h"), newest.Entries["app"].Manifest)), meshgrants.GrantsFor{}, nil,
+			[]string{"acting rule app node-build-go.check"}},
+		{"an acting rule is held shorter", halfOf(8, entry("app", "fp-1", rule("go", "5m"), newest.Entries["app"].Manifest)), meshgrants.GrantsFor{}, nil, nil},
+		{"a secret and a credential provision are named", halfOf(8, entry("app", "fp-1", rule("go", "10m"), map[string]any{
+			"secrets":  map[string]any{"token": "/x", "key": map[string]any{"path": "/k"}},
+			"provides": []any{"db", map[string]any{"name": "vault", "credential": map[string]any{"own": "key"}}}})),
+			meshgrants.GrantsFor{}, nil, []string{"credential app key", "credential app vault"}},
+		{"a grant is added", newest, meshgrants.GrantsFor{Modules: []meshgrants.GrantsForModulesItem{
+			{Module: "app", Added: []meshgrants.Grant{{Subject: "mesh.seat.x", Verb: "do"}}}, {Module: "other", Added: []meshgrants.Grant{{Subject: "s", Verb: "v"}}}}},
+			nil, []string{"grant app mesh.seat.x do"}},
+		{"the grants part does not answer", newest, meshgrants.GrantsFor{}, errors.New("no responders"), []string{"could not run mesh-grants"}},
+		{"the grants part cannot read the candidate", newest, meshgrants.GrantsFor{Error: "the catalog half is not held"}, nil, []string{"could not run mesh-grants"}},
+	}
+	for _, c := range cases {
+		w := &Widener{
+			Revision: func(_ string, rev int64) (Half, error) {
+				if rev == 0 {
+					return newest, nil
+				}
+				if rev != 8 {
+					t.Errorf("%s: the candidate asked as revision %d", c.name, rev)
+				}
+				return c.cand, nil
+			},
+			Holder:    func(s string) (string, error) { return holders[s], nil },
+			GrantsFor: func(string, int64) (meshgrants.GrantsFor, error) { return c.grants, c.grantsErr },
+		}
+		var got []string
+		for _, x := range w.Widens(p) {
+			got = append(got, x.What+" "+x.Name)
+		}
+		if strings.Join(got, ";") != strings.Join(c.want, ";") {
+			t.Errorf("%s: widens %q, want %q", c.name, got, c.want)
+		}
+	}
+}
+
+// pipeline-ended carries the widens the runner computed, and says it whether or not anything widens (design 47 G §71, A-207).
+func TestPipelineEndedCarriesWidens(t *testing.T) {
+	var body any
+	h := &Hearer{Say: func(_ string, b any) error { body = b; return nil },
+		Widens: func(p seat.Pipeline) []seat.Widening {
+			return []seat.Widening{{What: seat.WideningWhatGrant, Name: p.Module + " s v"}}
+		}}
+	if err := h.say(seat.EventPipelineEnded, seat.Pipeline{Module: "app", Outcome: seat.PipelineOutcomePassed}, nil); err != nil {
+		t.Fatal(err)
+	}
+	if e, ok := body.(seat.PipelineEnded); !ok || len(e.Widens) != 1 || e.Widens[0].Name != "app s v" {
+		t.Errorf("pipeline-ended says %+v", body)
+	}
+	h.Widens = nil
+	_ = h.say(seat.EventPipelineEnded, seat.Pipeline{Module: "app"}, nil)
+	if e := body.(seat.PipelineEnded); len(e.Widens) != 0 {
+		t.Errorf("a runner with no widener said %v", e.Widens)
+	}
+}
diff --git a/modules/mesh-delivery-pipeline/manifest_test.go b/modules/mesh-delivery-pipeline/manifest_test.go
index f97f5e97..3ee4750f 100644
--- a/modules/mesh-delivery-pipeline/manifest_test.go
+++ b/modules/mesh-delivery-pipeline/manifest_test.go
@@ -84,6 +84,8 @@ func TestManifest(t *testing.T) {
 		{"invokes", equalSets(m.Invokes, []string{"seat:mesh-catalog.registrations", "seat:mesh-catalog.revision", "seat:mesh-hand-acts.hand-act",
 			// RN3 (§53, §334): a publication's dependents behind.
 			"seat:mesh-catalog.outdated",
+			// RN10 (§71, §441, A-207): the permissions a change widens, asked of the grants part.
+			"seat:mesh-grants.grants-for",
 			// RN11 (§33, A-191): the author of a failed head, read as the forge records it.
 			"seat:git.pull",
 			// A-74, A-89: who holds the seat operator-channel, whose state asks holds the router's record of the approval ask.
diff --git a/modules/mesh-delivery-pipeline/module.json b/modules/mesh-delivery-pipeline/module.json
index ad4d41c5..6a642861 100644
--- a/modules/mesh-delivery-pipeline/module.json
+++ b/modules/mesh-delivery-pipeline/module.json
@@ -54,6 +54,7 @@
     "seat:mesh-catalog.outdated",
     "seat:git.pull",
     "seat:mesh-module-assigner.assignments",
+    "seat:mesh-grants.grants-for",
     "seat:mesh-builds.step",
     "seat:mesh-wants.step",
     "seat:node-build-go.check.step",