apps/api/prisma/migrations/20260719223755_page_time_filter_indexes/migration.sql

@@ -0,0 +1,5 @@
+-- CreateIndex
+CREATE INDEX "pages_pond_id_created_at_idx" ON "pages"("pond_id", "created_at");
+
+-- CreateIndex
+CREATE INDEX "pages_pond_id_updated_at_idx" ON "pages"("pond_id", "updated_at");

apps/api/prisma/schema.prisma

@@ -291,6 +291,10 @@ model Page {
   @@unique([pondId, slug])
   @@index([pondId])
   @@index([parentId])
+  // Time-filtered listings (issue #148): "pages of this pond created/updated
+  // since X" hit these instead of scanning the pond.
+  @@index([pondId, createdAt])
+  @@index([pondId, updatedAt])
   @@map("pages")
 }
 

apps/api/src/mcp/mcp-tools.ts

@@ -12,9 +12,21 @@ import { z } from 'zod';
 const pond = z.string().min(1);
 const page = z.string().min(1);
 
+/** ISO 8601 instant for `…_since` filters (issue #148). */
+const sinceInstant = z
+  .string()
+  .trim()
+  .regex(/^\d{4}-\d{2}-\d{2}([T ].+)?$/)
+  .refine((value) => !Number.isNaN(Date.parse(value)))
+  .transform((value) => new Date(value));
+
 export const MCP_TOOL_INPUTS = {
   list_ponds: z.object({}),
-  list_pages: z.object({ pond }),
+  list_pages: z.object({
+    pond,
+    created_since: sinceInstant.optional(),
+    updated_since: sinceInstant.optional(),
+  }),
   read_page: z.object({ pond, page }),
   search: z.object({
     query: z.string().min(1),
@@ -68,8 +80,23 @@ export const MCP_TOOL_DEFINITIONS: {
     name: 'list_pages',
     description:
       'List the readable pages of a pond: slug, title, parent (the page tree), labels, ' +
-      'timestamps.',
+      'timestamps. Optional created_since/updated_since (ISO 8601) narrow to pages ' +
-    inputSchema: { type: 'object', properties: { pond: pondProp }, required: ['pond'] },
+      'created/changed at or after that instant.',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        pond: pondProp,
+        created_since: {
+          type: 'string',
+          description: 'ISO 8601 instant — only pages created at/after it',
+        },
+        updated_since: {
+          type: 'string',
+          description: 'ISO 8601 instant — only pages updated at/after it',
+        },
+      },
+      required: ['pond'],
+    },
   },
   {
     name: 'read_page',

apps/api/src/mcp/mcp.service.ts

@@ -97,9 +97,17 @@ export class McpService {
       case 'list_ponds':
         return asJson(await this.publicApi.listPonds(user, token, 'mcp'));
 
-      case 'list_pages':
+      case 'list_pages': {
         await this.assertPondExposed(input.pond!, token);
-        return asJson(await this.publicApi.listPages(user, input.pond!));
+        // The zod input already turned the `…_since` strings into Dates (#148).
+        const since = args as { created_since?: Date; updated_since?: Date };
+        return asJson(
+          await this.publicApi.listPages(user, input.pond!, {
+            createdSince: since.created_since,
+            updatedSince: since.updated_since,
+          }),
+        );
+      }
 
       case 'read_page':
         await this.assertPondExposed(input.pond!, token);

apps/api/src/pages/pages.controller.ts

@@ -24,6 +24,7 @@ import {
   UpdatePageInput,
   createPageInputSchema,
   pageDeleteQuerySchema,
+  pageListQuerySchema,
   repositionPageInputSchema,
   updatePageInputSchema,
 } from '@dorfteich/shared';
@@ -57,9 +58,16 @@ export class PagesController {
   @RequiresPondRole('reader', { idParam: 'pondId' }) // the service filters per page
   async list(
     @Param('pondId') pondId: string,
+    @Query('createdSince') createdSince: string | undefined,
+    @Query('updatedSince') updatedSince: string | undefined,
     @Req() request: AuthedRequest,
   ): Promise<PageListItemView[]> {
-    return this.pages.list(request.user!, pondId);
+    // Optional time filters (issue #148); an invalid instant → 400.
+    const query = new ZodValidationPipe(pageListQuerySchema).transform({
+      createdSince: createdSince || undefined,
+      updatedSince: updatedSince || undefined,
+    });
+    return this.pages.list(request.user!, pondId, query);
   }
 
   @Get('pages/:id')

apps/api/src/pages/pages.service.ts

@@ -11,6 +11,7 @@ import {
   OutlineEntry,
   PageDeleteMode,
   PageListItemView,
+  PageListQuery,
   PageStateView,
   PageView,
   PluginPageSummary,
@@ -151,13 +152,24 @@ export class PagesService {
   /** Sidebar page list, ordered per the pond's persisted sort mode (issue #26),
    * each with its assigned label ids for chips and filtering (issue #44).
    * Filtered to the pages the user may read (issue #52) — a label- or
-   * page-scoped reader sees only their slice of the pond. */
+   * page-scoped reader sees only their slice of the pond. Optional time
-  async list(user: User, pondId: string): Promise<PageListItemView[]> {
+   * filters (issue #148) narrow to pages created/updated at or after an
+   * instant. */
+  async list(
+    user: User | null,
+    pondId: string,
+    query?: PageListQuery,
+  ): Promise<PageListItemView[]> {
     const pond = await this.prisma.pond.findFirst({ where: { id: pondId, deletedAt: null } });
     if (!pond) throw new NotFoundException();
     const settings = pondSettingsSchema.parse(pond.settings ?? {});
     const pages = await this.prisma.page.findMany({
-      where: { pondId, deletedAt: null },
+      where: {
+        pondId,
+        deletedAt: null,
+        ...(query?.createdSince ? { createdAt: { gte: query.createdSince } } : {}),
+        ...(query?.updatedSince ? { updatedAt: { gte: query.updatedSince } } : {}),
+      },
       orderBy: PagesService.SORT_ORDER[settings.sidebarSort],
       include: { labels: { select: { labelId: true } } },
     });

apps/api/src/public-api/openapi.ts

@@ -273,7 +273,23 @@ export function buildOpenApiDocument(): object {
       '/ponds/{pondSlug}/pages': {
         get: {
           summary: 'Readable pages of the pond.',
-          parameters: [pondParam],
+          parameters: [
+            pondParam,
+            {
+              name: 'createdSince',
+              in: 'query',
+              required: false,
+              schema: { type: 'string', format: 'date-time' },
+              description: 'Only pages created at or after this ISO 8601 instant (issue #148).',
+            },
+            {
+              name: 'updatedSince',
+              in: 'query',
+              required: false,
+              schema: { type: 'string', format: 'date-time' },
+              description: 'Only pages updated at or after this ISO 8601 instant (issue #148).',
+            },
+          ],
           responses: {
             '200': jsonResponse('Pages', { type: 'array', items: ref('PageListItem') }),
           },

apps/api/src/public-api/public-api.controller.ts

@@ -17,6 +17,7 @@ import {
   commentListQuerySchema,
   createCommentInputSchema,
   createLabelInputSchema,
+  pageListQuerySchema,
   publicCreatePageInputSchema,
   publicSearchQuerySchema,
   publicUpdateLabelInputSchema,
@@ -88,9 +89,16 @@ export class PublicApiController {
   @RequiresPondRole('reader', POND)
   listPages(
     @Param('pondSlug') pondSlug: string,
+    @Query('createdSince') createdSince: string | undefined,
+    @Query('updatedSince') updatedSince: string | undefined,
     @Req() request: PublicApiRequest,
   ): Promise<PublicPageListItemView[]> {
-    return this.publicApi.listPages(request.user!, pondSlug);
+    // Optional time filters (issue #148); an invalid instant → 400.
+    const query = new ZodValidationPipe(pageListQuerySchema).transform({
+      createdSince: createdSince || undefined,
+      updatedSince: updatedSince || undefined,
+    });
+    return this.publicApi.listPages(request.user!, pondSlug, query);
   }
 
   @Post('ponds/:pondSlug/pages')

apps/api/src/public-api/public-api.e2e.db.test.ts

@@ -460,6 +460,50 @@ describe.skipIf(!hasTestDb)('public api v1 (e2e, issue #104)', () => {
       .expect(404);
   });
 
+  it('filters the page list by createdSince/updatedSince (issue #148)', async () => {
+    const old = await pub()
+      .post(`/api/public/v1/ponds/${pondSlug}/pages`)
+      .set('Authorization', bearer('editor'))
+      .send({ title: `Since Old ${suffix}` })
+      .expect(201);
+    const fresh = await pub()
+      .post(`/api/public/v1/ponds/${pondSlug}/pages`)
+      .set('Authorization', bearer('editor'))
+      .send({ title: `Since Fresh ${suffix}` })
+      .expect(201);
+    const oldSlug = (old.body as PublicPageView).slug;
+    const freshSlug = (fresh.body as PublicPageView).slug;
+    // Backdate the old page below the cutoff (raw row: timestamps only).
+    await prisma.page.updateMany({
+      where: { pondId, slug: oldSlug },
+      data: {
+        createdAt: new Date('2000-01-01T00:00:00Z'),
+        updatedAt: new Date('2000-01-02T00:00:00Z'),
+      },
+    });
+
+    for (const param of ['createdSince', 'updatedSince'] as const) {
+      const filtered = await pub()
+        .get(`/api/public/v1/ponds/${pondSlug}/pages?${param}=2020-01-01T00:00:00Z`)
+        .set('Authorization', bearer('reader'))
+        .expect(200);
+      const slugs = (filtered.body as PublicPageListItemView[]).map((p) => p.slug);
+      expect(slugs).toContain(freshSlug);
+      expect(slugs).not.toContain(oldSlug);
+    }
+
+    // Unfiltered, both are there; an invalid instant is a 400.
+    const all = await pub()
+      .get(`/api/public/v1/ponds/${pondSlug}/pages`)
+      .set('Authorization', bearer('reader'))
+      .expect(200);
+    expect((all.body as PublicPageListItemView[]).map((p) => p.slug)).toContain(oldSlug);
+    await pub()
+      .get(`/api/public/v1/ponds/${pondSlug}/pages?updatedSince=not-a-date`)
+      .set('Authorization', bearer('reader'))
+      .expect(400);
+  });
+
   it('manages labels with pond-admin rights and assigns them to pages', async () => {
     const label = await pub()
       .post(`/api/public/v1/ponds/${pondSlug}/labels`)

apps/api/src/public-api/public-api.service.ts

@@ -7,6 +7,7 @@ import {
   pondFeatureEnabled,
   pondSettingsSchema,
   type CommentListFilter,
+  type PageListQuery,
   type CreateCommentInput,
   type CreateLabelInput,
   type LabelTreeNode,
@@ -93,10 +94,14 @@ export class PublicApiService {
     return this.pondView(pond);
   }
 
-  async listPages(user: User, pondSlug: string): Promise<PublicPageListItemView[]> {
+  async listPages(
+    user: User,
+    pondSlug: string,
+    query?: PageListQuery,
+  ): Promise<PublicPageListItemView[]> {
     const pond = await this.requirePond(pondSlug);
     const [items, labelNames] = await Promise.all([
-      this.pages.list(user, pond.id),
+      this.pages.list(user, pond.id, query),
       this.labelNames(pond.id),
     ]);
     // parentId is already permission-nulled by the list (#106); mapping it

docs/de/manual/api-guide.md

@@ -52,6 +52,9 @@ curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds
 # Seiten eines Teichs: Slug, Titel, Parent (Seitenbaum-Slug), Labels, Zeitstempel
 curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds/team/pages
 
+# Nur Seiten, die seit einem ISO-8601-Zeitpunkt erstellt/geändert wurden (#148)
+curl -H "$AUTH" "https://wiki.example.com/api/public/v1/ponds/team/pages?updatedSince=2026-07-01T00:00:00Z"
+
 # Eine Seite — Markdown-Quelle UND gerendertes, bereinigtes HTML
 curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds/team/pages/meeting-notes
 

docs/de/manual/mcp-guide.md

@@ -65,7 +65,7 @@ Stdio-Clients überbrücken mit `mcp-remote`:
 | Tool                                                  | Tut                                                |
 | ----------------------------------------------------- | -------------------------------------------------- |
 | `list_ponds`                                          | die Teiche, die dieses Token erreicht              |
-| `list_pages(pond)`                                    | Seiten mit Slug, Titel, Parent, Labels             |
+| `list_pages(pond, created_since?, updated_since?)`    | Seiten mit Slug, Titel, Parent, Labels             |
 | `read_page(pond, page)`                               | eine Seite als Markdown plus Metadaten             |
 | `search(query, pond?, label?)`                        | Volltextsuche mit Snippets                         |
 | `create_page(pond, title, markdown, parent?)`         | neue Seite aus Markdown _(write)_                  |

docs/manual/api-guide.md

@@ -49,6 +49,9 @@ curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds
 # Pages of a pond: slug, title, parent (page-tree slug), labels, timestamps
 curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds/team/pages
 
+# Only pages created/updated at or after an ISO 8601 instant (issue #148)
+curl -H "$AUTH" "https://wiki.example.com/api/public/v1/ponds/team/pages?updatedSince=2026-07-01T00:00:00Z"
+
 # One page — Markdown source AND rendered, sanitized HTML
 curl -H "$AUTH" https://wiki.example.com/api/public/v1/ponds/team/pages/meeting-notes
 

docs/manual/mcp-guide.md

@@ -64,7 +64,7 @@ clients bridge with `mcp-remote`:
 | Tool                                                  | Does                                        |
 | ----------------------------------------------------- | ------------------------------------------- |
 | `list_ponds`                                          | the ponds this token can reach              |
-| `list_pages(pond)`                                    | pages with slug, title, parent, labels      |
+| `list_pages(pond, created_since?, updated_since?)`    | pages with slug, title, parent, labels      |
 | `read_page(pond, page)`                               | a page as Markdown plus metadata            |
 | `search(query, pond?, label?)`                        | full-text search with snippets              |
 | `create_page(pond, title, markdown, parent?)`         | new page from Markdown _(write)_            |

docs/self-hosting/public-api.md

@@ -43,7 +43,7 @@ curl -H "Authorization: Bearer dt_pat_..." \
 | -------- | ---------------------------------------------------------------------------------------------------------------------------------- |
 | Identity | `GET /me`                                                                                                                          |
 | Ponds    | `GET /ponds`, `GET /ponds/{slug}`                                                                                                  |
-| Pages    | `GET/POST /ponds/{slug}/pages`, `GET/PATCH/DELETE /ponds/{slug}/pages/{pageSlug}`                                                  |
+| Pages    | `GET/POST /ponds/{slug}/pages` (list filters `?createdSince=`/`?updatedSince=`), `GET/PATCH/DELETE /ponds/{slug}/pages/{pageSlug}` |
 | Search   | `GET /search?q=&pond=&label=`                                                                                                      |
 | Export   | `GET /ponds/{slug}/export/markdown` (ZIP)                                                                                          |
 | Labels   | `GET/POST /ponds/{slug}/labels`, `PATCH/DELETE /ponds/{slug}/labels/{id}`, `PUT/DELETE /ponds/{slug}/pages/{pageSlug}/labels/{id}` |

packages/shared/src/public-api.ts

@@ -92,6 +92,21 @@ export const publicUpdateLabelInputSchema = z
   .partial();
 export type PublicUpdateLabelInput = z.infer<typeof publicUpdateLabelInputSchema>;
 
+/** An ISO 8601 instant (date or date-time) for `…Since` filters (issue #148). */
+const sinceInstant = z
+  .string()
+  .trim()
+  .regex(/^\d{4}-\d{2}-\d{2}([T ].+)?$/, 'validation.invalid')
+  .refine((value) => !Number.isNaN(Date.parse(value)), 'validation.invalid')
+  .transform((value) => new Date(value));
+
+/** Optional time filters for page listings (issue #148), applied as `>=`. */
+export const pageListQuerySchema = z.object({
+  createdSince: sinceInstant.optional(),
+  updatedSince: sinceInstant.optional(),
+});
+export type PageListQuery = z.infer<typeof pageListQuerySchema>;
+
 export const publicSearchQuerySchema = z.object({
   q: z.string().trim().min(1, 'validation.required').max(200),
   pond: z.string().trim().optional(),