diff --git a/backend/src/lib/ecosystem-phase1.test.ts b/backend/src/lib/ecosystem-phase1.test.ts
new file mode 100644
index 0000000..b8d0990
--- /dev/null
+++ b/backend/src/lib/ecosystem-phase1.test.ts
@@ -0,0 +1,94 @@
+import { afterEach, describe, expect, it } from 'vitest';
+import { mkdtemp, mkdir, readFile, rm, writeFile } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import { join } from 'node:path';
+import {
+  buildPhase1NoteImport,
+  loadLatestTranscriptArtifact,
+  persistPhase1NoteOutputs,
+} from './ecosystem-phase1.js';
+
+describe('ecosystem phase1 note import', () => {
+  afterEach(() => {
+    delete process.env.BYTELYST_ECOSYSTEM_DIR;
+  });
+
+  it('loads the latest transcript and persists a linked note artifact + events', async () => {
+    const root = await mkdtemp(join(tmpdir(), 'notelett-phase1-'));
+    process.env.BYTELYST_ECOSYSTEM_DIR = root;
+
+    const transcriptArtifact = {
+      id: 'art_transcript_123',
+      title: 'Standup capture',
+      summary: 'Transcript summary',
+      sourceSurface: 'desktop',
+      createdAt: '2026-04-03T18:15:00.000Z',
+      tags: ['voice'],
+      ownership: { userId: 'user_saravana', orgId: null },
+      provenance: {
+        originProductId: 'lysnrai',
+        originActionId: 'capture_123',
+        sessionId: 'sess_123',
+        runId: null,
+        approvalId: null,
+        correlationId: 'corr_123',
+        lineage: [
+          {
+            stepType: 'captured',
+            productId: 'lysnrai',
+            actorType: 'user',
+            timestamp: '2026-04-03T18:15:00.000Z',
+          },
+        ],
+      },
+      payload: {
+        transcriptText: 'Transcript body',
+        transcriptSource: 'microphone',
+        language: 'en',
+        durationMs: 1000,
+      },
+    };
+
+    await mkdir(join(root, 'indexes'), { recursive: true });
+    await writeFile(
+      join(root, 'indexes', 'latest-transcript.json'),
+      `${JSON.stringify(transcriptArtifact, null, 2)}\n`,
+      'utf-8'
+    );
+
+    const loaded = await loadLatestTranscriptArtifact(root);
+    const generated = buildPhase1NoteImport({
+      transcriptArtifact: loaded,
+      workspaceId: 'ws_phase1',
+      userId: 'user_saravana',
+      now: '2026-04-03T18:17:00.000Z',
+    });
+
+    await persistPhase1NoteOutputs({
+      ecosystemNoteArtifact: generated.ecosystemNoteArtifact,
+      createdEvent: generated.createdEvent,
+      linkedEvent: generated.linkedEvent,
+      root,
+    });
+
+    const savedNoteArtifact = JSON.parse(
+      await readFile(join(root, 'artifacts', 'note', `${generated.ecosystemNoteArtifact.id}.json`), 'utf-8')
+    );
+    const savedLinkedEvent = JSON.parse(
+      await readFile(join(root, 'events', 'artifact.linked', `${generated.linkedEvent.eventId}.json`), 'utf-8')
+    );
+
+    expect(generated.note.sourceUri).toBe('art_transcript_123');
+    expect(generated.ecosystemNoteArtifact.links).toEqual([
+      {
+        relation: 'summarizes',
+        targetArtifactId: 'art_transcript_123',
+      },
+    ]);
+    expect(savedNoteArtifact.payload.noteFormat).toBe('markdown');
+    expect(savedLinkedEvent.payload.targetArtifactId).toBe('art_transcript_123');
+    expect(savedLinkedEvent.payload.relation).toBe('summarizes');
+
+    await rm(root, { recursive: true, force: true });
+  });
+});
diff --git a/backend/src/lib/ecosystem-phase1.ts b/backend/src/lib/ecosystem-phase1.ts
new file mode 100644
index 0000000..6f26b9a
--- /dev/null
+++ b/backend/src/lib/ecosystem-phase1.ts
@@ -0,0 +1,293 @@
+import { randomUUID } from 'node:crypto';
+import { mkdir, readFile, writeFile } from 'node:fs/promises';
+import { homedir } from 'node:os';
+import { dirname, join } from 'node:path';
+import type { NoteArtifactDoc } from '../modules/note-artifacts/types.js';
+import type { NoteDoc } from '../modules/notes/types.js';
+
+export const DEFAULT_PHASE1_ROOT = join(homedir(), '.bytelyst', 'ecosystem', 'phase1');
+
+type TranscriptArtifact = {
+  id: string;
+  title: string | null;
+  summary: string | null;
+  sourceSurface: string;
+  createdAt: string;
+  tags: string[];
+  ownership: {
+    userId: string;
+    orgId?: string | null;
+  };
+  provenance: {
+    originProductId: string;
+    originActionId?: string | null;
+    sessionId?: string | null;
+    runId?: string | null;
+    approvalId?: string | null;
+    correlationId?: string | null;
+    lineage: Array<{
+      stepType: string;
+      productId: string;
+      actorType: 'user' | 'agent' | 'system';
+      timestamp: string;
+    }>;
+  };
+  payload: {
+    transcriptText: string;
+    transcriptSource: string;
+    language: string;
+    durationMs: number;
+  };
+};
+
+type EcosystemEvent = {
+  eventId: string;
+  eventName: string;
+  eventVersion: 1;
+  occurredAt: string;
+  productId: string;
+  sourceSurface: string;
+  userId: string | null;
+  orgId?: string | null;
+  sessionId?: string | null;
+  runId?: string | null;
+  artifactId?: string | null;
+  actor: {
+    actorType: 'user' | 'agent' | 'system' | 'device';
+    actorId?: string | null;
+  };
+  trace: {
+    correlationId: string | null;
+    causationId: string | null;
+    parentEventId: string | null;
+  };
+  payload: Record<string, unknown>;
+};
+
+type NoteArtifactEnvelope = {
+  id: string;
+  artifactType: 'note';
+  schemaVersion: 1;
+  productId: 'notelett';
+  sourceSurface: string;
+  title: string;
+  summary: string;
+  createdAt: string;
+  updatedAt: string;
+  createdBy: {
+    actorType: 'agent';
+    actorId: string;
+  };
+  ownership: {
+    userId: string;
+    orgId?: string | null;
+  };
+  visibility: {
+    scope: 'private';
+  };
+  status: string;
+  tags: string[];
+  links: Array<{
+    relation: 'summarizes';
+    targetArtifactId: string;
+  }>;
+  provenance: TranscriptArtifact['provenance'];
+  payload: {
+    noteFormat: 'markdown';
+    body: string;
+    excerpt: string;
+  };
+};
+
+export function getPhase1Root(): string {
+  return process.env.BYTELYST_ECOSYSTEM_DIR ?? DEFAULT_PHASE1_ROOT;
+}
+
+export async function loadLatestTranscriptArtifact(root = getPhase1Root()): Promise<TranscriptArtifact> {
+  const raw = await readFile(join(root, 'indexes', 'latest-transcript.json'), 'utf-8');
+  return JSON.parse(raw) as TranscriptArtifact;
+}
+
+export function buildPhase1NoteImport(params: {
+  transcriptArtifact: TranscriptArtifact;
+  workspaceId: string;
+  userId: string;
+  now?: string;
+}): {
+  note: NoteDoc;
+  noteArtifactDoc: NoteArtifactDoc;
+  ecosystemNoteArtifact: NoteArtifactEnvelope;
+  createdEvent: EcosystemEvent;
+  linkedEvent: EcosystemEvent;
+} {
+  const { transcriptArtifact, workspaceId, userId } = params;
+  const now = params.now ?? new Date().toISOString();
+  const noteId = `note_phase1_${randomUUID().replace(/-/g, '').slice(0, 12)}`;
+  const correlationId = transcriptArtifact.provenance.correlationId ?? `corr_${randomUUID().slice(0, 12)}`;
+  const runId = `run_note_${randomUUID().replace(/-/g, '').slice(0, 10)}`;
+  const title = transcriptArtifact.title || 'Imported transcript note';
+  const body = `# ${title}\n\n${transcriptArtifact.payload.transcriptText}`;
+  const excerpt = transcriptArtifact.summary || transcriptArtifact.payload.transcriptText.slice(0, 160);
+  const noteArtifactId = `art_note_${randomUUID().replace(/-/g, '').slice(0, 12)}`;
+
+  const note: NoteDoc = {
+    id: noteId,
+    productId: 'notelett',
+    workspaceId,
+    userId,
+    title,
+    body,
+    status: 'draft',
+    tags: Array.from(new Set([...transcriptArtifact.tags, 'ecosystem', 'phase1'])),
+    links: [transcriptArtifact.id],
+    sourceType: 'ecosystem-transcript',
+    sourceUri: transcriptArtifact.id,
+    createdAt: now,
+    updatedAt: now,
+    createdBy: userId,
+    updatedBy: userId,
+    agentId: 'phase1-transcript-importer',
+  };
+
+  const noteArtifactDoc: NoteArtifactDoc = {
+    id: `na_${randomUUID().replace(/-/g, '').slice(0, 12)}`,
+    productId: 'notelett',
+    workspaceId,
+    userId,
+    noteId,
+    artifactType: 'summary',
+    title: 'Imported transcript artifact',
+    description: `Transcript source ${transcriptArtifact.id}`,
+    blobPath: join(getPhase1Root(), 'artifacts', 'note', `${noteArtifactId}.json`),
+    contentType: 'application/json',
+    createdAt: now,
+    createdBy: userId,
+    updatedAt: now,
+    updatedBy: userId,
+  };
+
+  const ecosystemNoteArtifact: NoteArtifactEnvelope = {
+    id: noteArtifactId,
+    artifactType: 'note',
+    schemaVersion: 1,
+    productId: 'notelett',
+    sourceSurface: 'backend',
+    title,
+    summary: excerpt,
+    createdAt: now,
+    updatedAt: now,
+    createdBy: {
+      actorType: 'agent',
+      actorId: 'phase1-transcript-importer',
+    },
+    ownership: {
+      userId,
+      orgId: transcriptArtifact.ownership.orgId ?? null,
+    },
+    visibility: {
+      scope: 'private',
+    },
+    status: note.status,
+    tags: note.tags,
+    links: [
+      {
+        relation: 'summarizes',
+        targetArtifactId: transcriptArtifact.id,
+      },
+    ],
+    provenance: {
+      ...transcriptArtifact.provenance,
+      runId,
+      lineage: [
+        ...transcriptArtifact.provenance.lineage,
+        {
+          stepType: 'note-created',
+          productId: 'notelett',
+          actorType: 'agent',
+          timestamp: now,
+        },
+      ],
+    },
+    payload: {
+      noteFormat: 'markdown',
+      body,
+      excerpt,
+    },
+  };
+
+  const createdEvent: EcosystemEvent = {
+    eventId: `evt_note_created_${randomUUID().replace(/-/g, '').slice(0, 12)}`,
+    eventName: 'artifact.created',
+    eventVersion: 1,
+    occurredAt: now,
+    productId: 'notelett',
+    sourceSurface: 'backend',
+    userId,
+    orgId: transcriptArtifact.ownership.orgId ?? null,
+    sessionId: transcriptArtifact.provenance.sessionId ?? null,
+    runId,
+    artifactId: ecosystemNoteArtifact.id,
+    actor: {
+      actorType: 'agent',
+      actorId: 'phase1-transcript-importer',
+    },
+    trace: {
+      correlationId,
+      causationId: null,
+      parentEventId: null,
+    },
+    payload: {
+      artifactType: 'note',
+      title,
+      status: note.status,
+    },
+  };
+
+  const linkedEvent: EcosystemEvent = {
+    eventId: `evt_note_linked_${randomUUID().replace(/-/g, '').slice(0, 12)}`,
+    eventName: 'artifact.linked',
+    eventVersion: 1,
+    occurredAt: now,
+    productId: 'notelett',
+    sourceSurface: 'backend',
+    userId,
+    orgId: transcriptArtifact.ownership.orgId ?? null,
+    sessionId: transcriptArtifact.provenance.sessionId ?? null,
+    runId,
+    artifactId: ecosystemNoteArtifact.id,
+    actor: {
+      actorType: 'agent',
+      actorId: 'phase1-transcript-importer',
+    },
+    trace: {
+      correlationId,
+      causationId: createdEvent.eventId,
+      parentEventId: createdEvent.eventId,
+    },
+    payload: {
+      sourceArtifactId: ecosystemNoteArtifact.id,
+      targetArtifactId: transcriptArtifact.id,
+      relation: 'summarizes',
+    },
+  };
+
+  return { note, noteArtifactDoc, ecosystemNoteArtifact, createdEvent, linkedEvent };
+}
+
+export async function persistPhase1NoteOutputs(params: {
+  ecosystemNoteArtifact: NoteArtifactEnvelope;
+  createdEvent: EcosystemEvent;
+  linkedEvent: EcosystemEvent;
+  root?: string;
+}): Promise<void> {
+  const root = params.root ?? getPhase1Root();
+  await writeJson(join(root, 'artifacts', 'note', `${params.ecosystemNoteArtifact.id}.json`), params.ecosystemNoteArtifact);
+  await writeJson(join(root, 'events', 'artifact.created', `${params.createdEvent.eventId}.json`), params.createdEvent);
+  await writeJson(join(root, 'events', 'artifact.linked', `${params.linkedEvent.eventId}.json`), params.linkedEvent);
+  await writeJson(join(root, 'indexes', 'latest-note.json'), params.ecosystemNoteArtifact);
+}
+
+async function writeJson(path: string, payload: unknown): Promise<void> {
+  await mkdir(dirname(path), { recursive: true });
+  await writeFile(path, `${JSON.stringify(payload, null, 2)}\n`, 'utf-8');
+}
diff --git a/backend/src/modules/ecosystem-phase1/routes.ts b/backend/src/modules/ecosystem-phase1/routes.ts
new file mode 100644
index 0000000..05f030c
--- /dev/null
+++ b/backend/src/modules/ecosystem-phase1/routes.ts
@@ -0,0 +1,44 @@
+import type { FastifyInstance } from 'fastify';
+import { z } from 'zod';
+import { BadRequestError } from '@bytelyst/errors';
+import { requireWriter } from '../../lib/auth.js';
+import { createNote } from '../notes/repository.js';
+import { createNoteArtifact } from '../note-artifacts/repository.js';
+import {
+  buildPhase1NoteImport,
+  loadLatestTranscriptArtifact,
+  persistPhase1NoteOutputs,
+} from '../../lib/ecosystem-phase1.js';
+
+const ImportLatestTranscriptSchema = z.object({
+  workspaceId: z.string().min(1).max(128),
+});
+
+export async function ecosystemPhase1Routes(app: FastifyInstance) {
+  app.post('/ecosystem/phase1/import-latest-transcript', async req => {
+    const auth = await requireWriter(req);
+    const parsed = ImportLatestTranscriptSchema.safeParse(req.body ?? {});
+    if (!parsed.success) {
+      throw new BadRequestError(parsed.error.issues.map(issue => issue.message).join('; '));
+    }
+
+    const transcriptArtifact = await loadLatestTranscriptArtifact();
+    const generated = buildPhase1NoteImport({
+      transcriptArtifact,
+      workspaceId: parsed.data.workspaceId,
+      userId: auth.sub,
+    });
+
+    const note = await createNote(generated.note);
+    const noteArtifactDoc = await createNoteArtifact(generated.noteArtifactDoc);
+    await persistPhase1NoteOutputs(generated);
+
+    return {
+      note,
+      noteArtifact: noteArtifactDoc,
+      ecosystemArtifactId: generated.ecosystemNoteArtifact.id,
+      linkedTranscriptArtifactId: transcriptArtifact.id,
+      events: [generated.createdEvent.eventId, generated.linkedEvent.eventId],
+    };
+  });
+}
diff --git a/backend/src/server.ts b/backend/src/server.ts
index a8f2c43..b252219 100644
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -1,6 +1,7 @@
 import { createServiceApp, registerOptionalJwtContext, startService } from '@bytelyst/fastify-core';
 import { jwtVerify } from 'jose';
 import { noteAgentActionRoutes } from './modules/note-agent-actions/routes.js';
+import { ecosystemPhase1Routes } from './modules/ecosystem-phase1/routes.js';
 import { noteArtifactRoutes } from './modules/note-artifacts/routes.js';
 import { noteRoutes } from './modules/notes/routes.js';
 import { noteRelationshipRoutes } from './modules/note-relationships/routes.js';
@@ -51,6 +52,7 @@ async function registerApiPlugin(plugin: unknown) {
 }
 
 await registerApiPlugin(noteAgentActionRoutes);
+await registerApiPlugin(ecosystemPhase1Routes);
 await registerApiPlugin(noteArtifactRoutes);
 await registerApiPlugin(noteRoutes);
 await registerApiPlugin(noteRelationshipRoutes);