diff --git a/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries.go b/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries.go
new file mode 100644
index 00000000..dfb25214
--- /dev/null
+++ b/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries.go
@@ -0,0 +1,121 @@
+package main
+
+// Ordering, filtering and the weekly measure the verbs entries, groups and status serve (novox/hq ADR 0459
+// §2, §10; issue 1521): pure functions, no store — tools.go's entriesTool, groupsTool and statusTool call
+// them over what Store.Entries, Store.Groups and Store.Lessons already answered.
+
+import (
+	"sort"
+	"time"
+)
+
+// SortEntries orders mail entries as entries answers them (1521/AC1): those marked matters first, nearest
+// due date first among them (none last, within that group); then the rest, newest first.
+func SortEntries(entries []Entry) []Entry {
+	sorted := append([]Entry(nil), entries...)
+	sort.SliceStable(sorted, func(i, j int) bool {
+		a, b := sorted[i], sorted[j]
+		aMatters, bMatters := a.Mark == MarkMatters, b.Mark == MarkMatters
+		if aMatters != bMatters {
+			return aMatters
+		}
+		if aMatters {
+			aNone, bNone := a.DueDate.IsZero(), b.DueDate.IsZero()
+			if aNone != bNone {
+				return bNone // a has a due date, b does not: a first (none last)
+			}
+			if !aNone {
+				return a.DueDate.Before(b.DueDate) // nearest due date first
+			}
+		}
+		return a.Date.After(b.Date) // newest first, otherwise
+	})
+	return sorted
+}
+
+// FilterEntries keeps only entries of the given mail group (when group is not 0) and the given mark (when
+// mark is not "") (1521/AC1, AC4: "filtered by mail group or by mark when asked").
+func FilterEntries(entries []Entry, group int64, mark Mark) []Entry {
+	var out []Entry
+	for _, e := range entries {
+		if group != 0 && e.Group != group {
+			continue
+		}
+		if mark != "" && e.Mark != mark {
+			continue
+		}
+		out = append(out, e)
+	}
+	return out
+}
+
+// SortGroups orders mail groups largest first (1521/AC2), by label ascending to break a tie.
+func SortGroups(groups []Group) []Group {
+	sorted := append([]Group(nil), groups...)
+	sort.SliceStable(sorted, func(i, j int) bool {
+		if sorted[i].Count != sorted[j].Count {
+			return sorted[i].Count > sorted[j].Count
+		}
+		return sorted[i].Label < sorted[j].Label
+	})
+	return sorted
+}
+
+// WeeksCovered is how many trailing weeks the status verb's own measure covers (ADR 0459 §10: "for each of
+// the last 8 weeks").
+const WeeksCovered = 8
+
+// WeekMeasure is one week's reading-lessons-per-100-read-mails measure (ADR 0459 §10, 1521/AC3).
+type WeekMeasure struct {
+	WeekStart time.Time
+	MailsRead int
+	Lessons   int
+	// Rate is lessons given that week, per 100 mails read that week; nil when MailsRead is 0 ("a week with no
+	// mail read says so" — this nil is that saying).
+	Rate *float64
+}
+
+// weekStart is the Monday, UTC midnight, of the week t falls in.
+func weekStart(t time.Time) time.Time {
+	t = t.UTC()
+	offset := (int(t.Weekday()) + 6) % 7 // Monday=0 ... Sunday=6
+	return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, time.UTC).AddDate(0, 0, -offset)
+}
+
+// WeeklyMeasure computes the reading-lessons-per-100-read-mails measure for each of the last WeeksCovered
+// weeks, the oldest first, ending with the week now falls in (1521/AC3): lessons given that week, divided by
+// mails read (judged) that week, times 100; a week with no mail read carries no rate.
+func WeeklyMeasure(entries []Entry, lessons []Lesson, now time.Time) []WeekMeasure {
+	start := weekStart(now).AddDate(0, 0, -7*(WeeksCovered-1))
+	out := make([]WeekMeasure, WeeksCovered)
+	for i := range out {
+		out[i].WeekStart = start.AddDate(0, 0, 7*i)
+	}
+	indexOf := func(t time.Time) int {
+		if t.IsZero() || t.Before(start) {
+			return -1
+		}
+		idx := int(t.UTC().Sub(start).Hours() / (24 * 7))
+		if idx < 0 || idx >= WeeksCovered {
+			return -1
+		}
+		return idx
+	}
+	for _, e := range entries {
+		if i := indexOf(e.Judged); i >= 0 {
+			out[i].MailsRead++
+		}
+	}
+	for _, l := range lessons {
+		if i := indexOf(l.Made); i >= 0 {
+			out[i].Lessons++
+		}
+	}
+	for i := range out {
+		if out[i].MailsRead > 0 {
+			rate := float64(out[i].Lessons) / float64(out[i].MailsRead) * 100
+			out[i].Rate = &rate
+		}
+	}
+	return out
+}
diff --git a/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries_test.go b/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries_test.go
new file mode 100644
index 00000000..00b6c071
--- /dev/null
+++ b/modules/mesh-mail-reader/cmd/mesh-mail-reader/entries_test.go
@@ -0,0 +1,191 @@
+package main
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func entryAt(id int64, mark Mark, date time.Time, due time.Time, group int64) Entry {
+	return Entry{ID: id, Mark: mark, Date: date, DueDate: due, Group: group, Judged: date}
+}
+
+// 1521/AC1: entries newest first, except a mail that matters comes first, nearest due date first among
+// those (none last).
+func TestSortEntries(t *testing.T) {
+	d := func(day int) time.Time { return time.Date(2026, 10, day, 0, 0, 0, 0, time.UTC) }
+	entries := []Entry{
+		entryAt(1, MarkNeither, d(10), time.Time{}, 0),
+		entryAt(2, MarkMatters, d(5), d(20), 0),       // matters, due the 20th
+		entryAt(3, MarkMatters, d(1), time.Time{}, 0), // matters, no due date
+		entryAt(4, MarkNeither, d(15), time.Time{}, 0),
+		entryAt(5, MarkMatters, d(8), d(12), 0), // matters, due the 12th (nearest)
+	}
+	sorted := SortEntries(entries)
+	var order []int64
+	for _, e := range sorted {
+		order = append(order, e.ID)
+	}
+	want := []int64{5, 2, 3, 4, 1} // matters by nearest due date (5 then 2), matters-no-due-date last among matters (3), then non-matters newest first (4, 1)
+	if len(order) != len(want) {
+		t.Fatalf("order = %v, want %v", order, want)
+	}
+	for i := range want {
+		if order[i] != want[i] {
+			t.Fatalf("order = %v, want %v", order, want)
+		}
+	}
+}
+
+// 1521/AC1, AC4: filtered by mail group or by mark when asked.
+func TestFilterEntries(t *testing.T) {
+	entries := []Entry{
+		{ID: 1, Group: 10, Mark: MarkMatters},
+		{ID: 2, Group: 10, Mark: MarkNeither},
+		{ID: 3, Group: 20, Mark: MarkMatters},
+	}
+	if got := FilterEntries(entries, 10, ""); len(got) != 2 {
+		t.Fatalf("filter by group 10: %v, want 2", got)
+	}
+	if got := FilterEntries(entries, 0, MarkMatters); len(got) != 2 {
+		t.Fatalf("filter by mark matters: %v, want 2", got)
+	}
+	if got := FilterEntries(entries, 10, MarkMatters); len(got) != 1 || got[0].ID != 1 {
+		t.Fatalf("filter by group 10 and mark matters: %v, want just entry 1", got)
+	}
+}
+
+// 1521/AC2: groups largest first.
+func TestSortGroups(t *testing.T) {
+	groups := []Group{{ID: 1, Label: "small", Count: 1}, {ID: 2, Label: "big", Count: 100}, {ID: 3, Label: "medium", Count: 10}}
+	sorted := SortGroups(groups)
+	if sorted[0].Label != "big" || sorted[1].Label != "medium" || sorted[2].Label != "small" {
+		t.Fatalf("sorted = %+v, want big, medium, small", sorted)
+	}
+}
+
+// 1521/AC3: reading lessons per 100 read mails for each of the last 8 weeks; a week with no mail read has
+// no rate.
+func TestWeeklyMeasure(t *testing.T) {
+	now := time.Date(2026, 10, 21, 12, 0, 0, 0, time.UTC) // a Wednesday
+	thisWeek := weekStart(now)
+	lastWeek := thisWeek.AddDate(0, 0, -7)
+
+	entries := []Entry{
+		{ID: 1, Judged: thisWeek.Add(time.Hour)},
+		{ID: 2, Judged: thisWeek.Add(2 * time.Hour)},
+		{ID: 3, Judged: lastWeek.Add(time.Hour)},
+	}
+	lessons := []Lesson{
+		{ID: 1, Made: thisWeek.Add(3 * time.Hour)},
+	}
+	weeks := WeeklyMeasure(entries, lessons, now)
+	if len(weeks) != WeeksCovered {
+		t.Fatalf("len(weeks) = %d, want %d", len(weeks), WeeksCovered)
+	}
+	last := weeks[len(weeks)-1]
+	if !last.WeekStart.Equal(thisWeek) {
+		t.Fatalf("last week's start = %v, want %v", last.WeekStart, thisWeek)
+	}
+	if last.MailsRead != 2 || last.Lessons != 1 || last.Rate == nil || *last.Rate != 50 {
+		t.Fatalf("this week = %+v, want 2 read, 1 lesson, rate 50", last)
+	}
+	secondLast := weeks[len(weeks)-2]
+	if secondLast.MailsRead != 1 || secondLast.Lessons != 0 || secondLast.Rate == nil || *secondLast.Rate != 0 {
+		t.Fatalf("last week = %+v, want 1 read, 0 lessons, rate 0", secondLast)
+	}
+	// Every other week (further back, with no mail read) carries no rate.
+	for i := 0; i < len(weeks)-2; i++ {
+		if weeks[i].Rate != nil {
+			t.Fatalf("week %d = %+v, want no rate (no mail read)", i, weeks[i])
+		}
+	}
+}
+
+// 1521/AC1: the entries verb answers the mail entries newest first, filtered by group or mark, with the
+// required fields.
+func TestEntriesToolAnswersFilteredAndSorted(t *testing.T) {
+	ctx := context.Background()
+	store := newMemStore()
+	g, err := store.FindOrCreateGroup(ctx, "newsletters")
+	if err != nil {
+		t.Fatal(err)
+	}
+	store.AddEntry(ctx, Entry{Account: "bob", Subject: "a", Mark: MarkNeither, Group: g.ID, Date: time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC)})
+	store.AddEntry(ctx, Entry{Account: "bob", Subject: "b", Mark: MarkMatters, DueDate: time.Date(2026, 11, 1, 0, 0, 0, 0, time.UTC), Date: time.Date(2026, 10, 2, 0, 0, 0, 0, time.UTC)})
+
+	b := &Bundle{
+		Caller:          func(map[string]any) string { return "mesh-mail-web" },
+		callersOverride: func() (Callers, error) { return Callers{"mesh-mail-web"}, nil },
+		Store:           func(context.Context) (Store, error) { return store, nil },
+	}
+	out, err := b.entriesTool(map[string]any{"group": "newsletters"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	m := out.(map[string]any)
+	entries := m["entries"].([]map[string]any)
+	if len(entries) != 1 || entries[0]["subject"] != "a" || entries[0]["group"] != "newsletters" {
+		t.Fatalf("filtered by group: %v", entries)
+	}
+
+	out, err = b.entriesTool(map[string]any{"mark": "matters"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	entries = out.(map[string]any)["entries"].([]map[string]any)
+	if len(entries) != 1 || entries[0]["subject"] != "b" || entries[0]["due-date"] != "2026-11-01" {
+		t.Fatalf("filtered by mark: %v", entries)
+	}
+}
+
+// 1521/AC2: the groups verb answers each mail group with how many mails it holds, largest first.
+func TestGroupsToolAnswersLargestFirst(t *testing.T) {
+	ctx := context.Background()
+	store := newMemStore()
+	small, _ := store.FindOrCreateGroup(ctx, "small")
+	big, _ := store.FindOrCreateGroup(ctx, "big")
+	store.AddEntry(ctx, Entry{Group: small.ID})
+	store.AddEntry(ctx, Entry{Group: big.ID})
+	store.AddEntry(ctx, Entry{Group: big.ID})
+
+	b := &Bundle{
+		Caller:          func(map[string]any) string { return "mesh-mail-web" },
+		callersOverride: func() (Callers, error) { return Callers{"mesh-mail-web"}, nil },
+		Store:           func(context.Context) (Store, error) { return store, nil },
+	}
+	out, err := b.groupsTool(map[string]any{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	groups := out.(map[string]any)["groups"].([]map[string]any)
+	if len(groups) != 2 || groups[0]["label"] != "big" || groups[0]["count"] != 2 || groups[1]["label"] != "small" || groups[1]["count"] != 1 {
+		t.Fatalf("groups = %v", groups)
+	}
+}
+
+// 1521/AC3: status answers healthy or not, the cause and since when, and the weekly measure.
+func TestStatusToolAnswersHealthAndWeeklyMeasure(t *testing.T) {
+	ctx := context.Background()
+	store := newMemStore()
+	since := time.Date(2026, 10, 20, 9, 30, 0, 0, time.UTC)
+	store.SetReaderHealth(ctx, ReaderHealth{Healthy: false, Cause: OutcomeRefused, Why: "holds no licence", Since: since})
+
+	b := &Bundle{
+		Caller:          func(map[string]any) string { return "mesh-mail-web" },
+		callersOverride: func() (Callers, error) { return Callers{"mesh-mail-web"}, nil },
+		Store:           func(context.Context) (Store, error) { return store, nil },
+	}
+	out, err := b.statusTool(map[string]any{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	m := out.(map[string]any)
+	if m["healthy"] != false || m["cause"] != "refused" || m["why"] != "holds no licence" {
+		t.Fatalf("status = %v", m)
+	}
+	weeks := m["weeks"].([]map[string]any)
+	if len(weeks) != WeeksCovered {
+		t.Fatalf("len(weeks) = %d, want %d", len(weeks), WeeksCovered)
+	}
+}
diff --git a/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools.go b/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools.go
index e4546a04..aecc9b71 100644
--- a/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools.go
+++ b/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools.go
@@ -16,6 +16,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"time"
 
 	stdio "git.novox.be/novox/mesh-sdk/go"
 )
@@ -93,6 +94,19 @@ func schema(required []string, props map[string]any) map[string]any {
 func text(d string) map[string]any    { return map[string]any{"type": "string", "description": d} }
 func integer(d string) map[string]any { return map[string]any{"type": "integer", "description": d} }
 
+// number reads an optional whole-number argument, otherwise when left out.
+func number(args map[string]any, key string, otherwise int) (int, error) {
+	v, ok := args[key]
+	if !ok || v == nil {
+		return otherwise, nil
+	}
+	f, ok := v.(float64)
+	if !ok || f != float64(int(f)) {
+		return 0, errors.New(key + " is a whole number")
+	}
+	return int(f), nil
+}
+
 // only refuses an argument a tool does not take.
 func only(args map[string]any, takes ...string) error {
 	for k := range args {
@@ -116,15 +130,19 @@ func (b *Bundle) Tools() []stdio.Tool {
 	return []stdio.Tool{
 		{Name: EntriesTool,
 			Description: "Every mail entry (novox/hq ADR 0459 §4): the mail's own headers, its mail group, a " +
-				"one-line summary, its mark and why, its due date — never a mail body. Answered only to a caller " +
-				"the setting callers names. Read-only.",
+				"one-line summary, its mark and why, its due date — never a mail body. Newest first, except a " +
+				"mail that matters comes first, nearest due date first among those (none last). Filtered by mail " +
+				"group (its label) or by mark when asked. Answered only to a caller the setting callers names. " +
+				"Read-only.",
 			Input: schema(nil, map[string]any{
-				"limit": integer("how many to answer, newest first; a default bounds it when left out"),
+				"limit": integer("how many to answer; a default bounds it when left out"),
+				"group": text("only mails of this mail group, by its label"),
+				"mark":  text("only mails of this mark: matters, scam warning or neither"),
 			}),
 			Run: b.entriesTool},
 		{Name: GroupsTool,
-			Description: "Every mail group a batch has made (novox/hq ADR 0459 §4, §5), largest first. " +
-				"Answered only to a caller the setting callers names. Read-only.",
+			Description: "Every mail group a batch has made (novox/hq ADR 0459 §4, §5), with how many mails it " +
+				"holds, largest first. Answered only to a caller the setting callers names. Read-only.",
 			Input: schema(nil, map[string]any{
 				"limit": integer("how many to answer; a default bounds it when left out"),
 			}),
@@ -156,9 +174,9 @@ func (b *Bundle) Tools() []stdio.Tool {
 			}),
 			Run: b.undoTool},
 		{Name: StatusTool,
-			Description: "How mail reading stands for the page (novox/hq ADR 0459 §10): lessons kept, lessons " +
-				"undone, and lessons per 100 mails read this week. Answered only to a caller the setting callers " +
-				"names. Read-only.",
+			Description: "How mail reading stands for the page (novox/hq ADR 0459 §10): healthy or not, the cause " +
+				"and since when, and reading lessons per 100 read mails for each of the last 8 weeks (a week with " +
+				"no mail read says so). Answered only to a caller the setting callers names. Read-only.",
 			Input: schema(nil, map[string]any{}),
 			Run:   b.statusTool},
 		{Name: HealthTool,
@@ -170,14 +188,72 @@ func (b *Bundle) Tools() []stdio.Tool {
 	}
 }
 
+// entryOut is one mail entry as entriesTool answers it (1521/AC1): account, message id, date, sender name,
+// subject, group (by its label), summary, mark, why and due date — never a mail body.
+func entryOut(e Entry, labels map[int64]string) map[string]any {
+	due := ""
+	if !e.DueDate.IsZero() {
+		due = e.DueDate.Format("2006-01-02")
+	}
+	return map[string]any{
+		"id": e.ID, "account": e.Account, "message-id": e.MessageID, "date": e.Date.UTC().Format(time.RFC3339),
+		"sender-name": e.SenderName, "subject": e.Subject, "group": labels[e.Group], "summary": e.Summary,
+		"mark": string(e.Mark), "why": e.Why, "due-date": due,
+	}
+}
+
 func (b *Bundle) entriesTool(args map[string]any) (any, error) {
 	if _, err := b.checkCaller(args); err != nil {
 		return nil, err
 	}
-	if err := only(args, "limit"); err != nil {
+	if err := only(args, "limit", "group", "mark"); err != nil {
 		return nil, err
 	}
-	return nil, notBuiltYet(EntriesTool, "1521")
+	limit, err := number(args, "limit", 0)
+	if err != nil {
+		return nil, err
+	}
+	groupLabel, _ := args["group"].(string)
+	markStr, _ := args["mark"].(string)
+	mark := Mark(markStr)
+	if mark != "" && mark != MarkMatters && mark != MarkScamWarning && mark != MarkNeither {
+		return nil, fmt.Errorf("%s needs mark to be matters, scam warning or neither", EntriesTool)
+	}
+	ctx := context.Background()
+	store, err := b.Store(ctx)
+	if err != nil {
+		return nil, err
+	}
+	groups, err := store.Groups(ctx)
+	if err != nil {
+		return nil, err
+	}
+	labels := map[int64]string{}
+	var groupID int64
+	for _, g := range groups {
+		labels[g.ID] = g.Label
+		if groupLabel != "" && g.Label == groupLabel {
+			groupID = g.ID
+		}
+	}
+	entries, err := store.Entries(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if groupLabel != "" {
+		entries = FilterEntries(entries, groupID, mark)
+	} else {
+		entries = FilterEntries(entries, 0, mark)
+	}
+	entries = SortEntries(entries)
+	if limit > 0 && len(entries) > limit {
+		entries = entries[:limit]
+	}
+	out := make([]map[string]any, len(entries))
+	for i, e := range entries {
+		out[i] = entryOut(e, labels)
+	}
+	return map[string]any{"entries": out}, nil
 }
 
 func (b *Bundle) groupsTool(args map[string]any) (any, error) {
@@ -187,7 +263,28 @@ func (b *Bundle) groupsTool(args map[string]any) (any, error) {
 	if err := only(args, "limit"); err != nil {
 		return nil, err
 	}
-	return nil, notBuiltYet(GroupsTool, "1521")
+	limit, err := number(args, "limit", 0)
+	if err != nil {
+		return nil, err
+	}
+	ctx := context.Background()
+	store, err := b.Store(ctx)
+	if err != nil {
+		return nil, err
+	}
+	groups, err := store.Groups(ctx)
+	if err != nil {
+		return nil, err
+	}
+	groups = SortGroups(groups)
+	if limit > 0 && len(groups) > limit {
+		groups = groups[:limit]
+	}
+	out := make([]map[string]any, len(groups))
+	for i, g := range groups {
+		out[i] = map[string]any{"label": g.Label, "count": g.Count}
+	}
+	return map[string]any{"groups": out}, nil
 }
 
 func (b *Bundle) correctTool(args map[string]any) (any, error) {
@@ -227,7 +324,42 @@ func (b *Bundle) statusTool(args map[string]any) (any, error) {
 	if err := only(args); err != nil {
 		return nil, err
 	}
-	return nil, notBuiltYet(StatusTool, "1521")
+	ctx := context.Background()
+	store, err := b.Store(ctx)
+	if err != nil {
+		return nil, err
+	}
+	h, err := store.ReaderHealth(ctx)
+	if err != nil {
+		return nil, err
+	}
+	entries, err := store.Entries(ctx)
+	if err != nil {
+		return nil, err
+	}
+	lessons, err := store.Lessons(ctx)
+	if err != nil {
+		return nil, err
+	}
+	weeks := WeeklyMeasure(entries, lessons, time.Now())
+	weeksOut := make([]map[string]any, len(weeks))
+	for i, w := range weeks {
+		week := map[string]any{"week-start": w.WeekStart.Format("2006-01-02"), "mails-read": w.MailsRead, "lessons": w.Lessons}
+		if w.Rate != nil {
+			week["lessons-per-100"] = *w.Rate
+		} else {
+			week["lessons-per-100"] = nil
+			week["why"] = "no mail was read this week"
+		}
+		weeksOut[i] = week
+	}
+	out := map[string]any{"healthy": h.Healthy, "weeks": weeksOut}
+	if !h.Healthy {
+		out["cause"] = string(h.Cause)
+		out["why"] = h.Why
+		out["since"] = h.Since.UTC().Format(time.RFC3339)
+	}
+	return out, nil
 }
 
 func (b *Bundle) healthTool(args map[string]any) (any, error) {
diff --git a/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools_test.go b/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools_test.go
index b088dde3..13a454f5 100644
--- a/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools_test.go
+++ b/modules/mesh-mail-reader/cmd/mesh-mail-reader/tools_test.go
@@ -34,38 +34,46 @@ func TestToolsListsTheSixVerbsAndHealth(t *testing.T) {
 	}
 }
 
-// 1426/AC4: a mail-reading verb answers a caller the setting callers names, and refuses any other, naming why.
+// 1426/AC4, 1521/AC4: a mail-reading verb answers a caller the setting callers names, and refuses any other,
+// naming why. entries, groups and status now answer for real (1521); correct, lessons and undo still answer
+// not built yet (1428).
 func TestAMailReadingVerbChecksItsCaller(t *testing.T) {
 	granted := func(map[string]any) string { return "mesh-mail-web" }
 	refused := func(map[string]any) string { return "person.someoneelse" }
 	unproven := func(map[string]any) string { return Unproven }
+	storeOf := func(context.Context) (Store, error) { return newMemStore(), nil }
 
 	for _, tool := range []struct {
-		name string
-		run  func(*Bundle) (any, error)
+		name  string
+		run   func(*Bundle) (any, error)
+		built bool // whether its issue has landed: true answers for real, false answers "not built yet"
 	}{
-		{EntriesTool, func(b *Bundle) (any, error) { return b.entriesTool(map[string]any{}) }},
-		{GroupsTool, func(b *Bundle) (any, error) { return b.groupsTool(map[string]any{}) }},
-		{CorrectTool, func(b *Bundle) (any, error) { return b.correctTool(map[string]any{"id": float64(1)}) }},
-		{LessonsTool, func(b *Bundle) (any, error) { return b.lessonsTool(map[string]any{}) }},
-		{UndoTool, func(b *Bundle) (any, error) { return b.undoTool(map[string]any{"id": float64(1)}) }},
-		{StatusTool, func(b *Bundle) (any, error) { return b.statusTool(map[string]any{}) }},
+		{EntriesTool, func(b *Bundle) (any, error) { return b.entriesTool(map[string]any{}) }, true},
+		{GroupsTool, func(b *Bundle) (any, error) { return b.groupsTool(map[string]any{}) }, true},
+		{CorrectTool, func(b *Bundle) (any, error) { return b.correctTool(map[string]any{"id": float64(1)}) }, false},
+		{LessonsTool, func(b *Bundle) (any, error) { return b.lessonsTool(map[string]any{}) }, false},
+		{UndoTool, func(b *Bundle) (any, error) { return b.undoTool(map[string]any{"id": float64(1)}) }, false},
+		{StatusTool, func(b *Bundle) (any, error) { return b.statusTool(map[string]any{}) }, true},
 	} {
 		callers := func() (Callers, error) { return Callers{"mesh-mail-web"}, nil }
 
-		b := &Bundle{Caller: granted, callersOverride: callers}
+		b := &Bundle{Caller: granted, callersOverride: callers, Store: storeOf}
 		_, err := tool.run(b)
-		if err == nil || !strings.Contains(err.Error(), "not built yet") {
+		if tool.built {
+			if err != nil {
+				t.Errorf("%s granted: %v, want it to pass the caller check and answer", tool.name, err)
+			}
+		} else if err == nil || !strings.Contains(err.Error(), "not built yet") {
 			t.Errorf("%s granted: %v, want it to pass the caller check and answer not built yet", tool.name, err)
 		}
 
-		b = &Bundle{Caller: refused, callersOverride: callers}
+		b = &Bundle{Caller: refused, callersOverride: callers, Store: storeOf}
 		_, err = tool.run(b)
 		if err == nil || !strings.Contains(err.Error(), "refused") || !strings.Contains(err.Error(), "person.someoneelse") {
 			t.Errorf("%s refused caller: %v, want a refusal naming person.someoneelse", tool.name, err)
 		}
 
-		b = &Bundle{Caller: unproven, callersOverride: callers}
+		b = &Bundle{Caller: unproven, callersOverride: callers, Store: storeOf}
 		_, err = tool.run(b)
 		if err == nil || !strings.Contains(err.Error(), "refused") {
 			t.Errorf("%s unproven caller: %v, want a refusal", tool.name, err)
@@ -73,7 +81,7 @@ func TestAMailReadingVerbChecksItsCaller(t *testing.T) {
 	}
 }
 
-// 1426/AC4: a setting that cannot be read allows nobody, and says why.
+// 1426/AC4: a setting that cannot be read allows nobody, and says why — before the store is ever reached.
 func TestAMailReadingVerbRefusesWhenCallersCannotBeRead(t *testing.T) {
 	b := &Bundle{
 		Caller:          func(map[string]any) string { return "mesh-mail-web" },