diff --git a/dashboards/open-brain-dashboard-next/components/AddToBrain.tsx b/dashboards/open-brain-dashboard-next/components/AddToBrain.tsx
index 998a50628..9f57e6187 100644
--- a/dashboards/open-brain-dashboard-next/components/AddToBrain.tsx
+++ b/dashboards/open-brain-dashboard-next/components/AddToBrain.tsx
@@ -71,7 +71,7 @@ export function AddToBrain({
   const [executing, setExecuting] = useState(false);
   const [executeError, setExecuteError] = useState<string | null>(null);
 
-  const fetchJobDetail = useCallback(async (jobId: number) => {
+  const fetchJobDetail = useCallback(async (jobId: string) => {
     setLoadingDetail(true);
     try {
       const res = await fetch(`/api/ingest/${jobId}`);
diff --git a/dashboards/open-brain-dashboard-next/lib/api.ts b/dashboards/open-brain-dashboard-next/lib/api.ts
index 3bc7c1dc7..9b5b7f5d4 100644
--- a/dashboards/open-brain-dashboard-next/lib/api.ts
+++ b/dashboards/open-brain-dashboard-next/lib/api.ts
@@ -229,7 +229,7 @@ export async function triggerIngest(
   apiKey: string,
   text: string,
   opts?: { dry_run?: boolean }
-): Promise<{ job_id: number; status: string }> {
+): Promise<{ job_id: string; status: string }> {
   return apiFetch(apiKey, "/ingest", {
     method: "POST",
     body: JSON.stringify({ text, ...opts }),
diff --git a/dashboards/open-brain-dashboard-next/lib/types.ts b/dashboards/open-brain-dashboard-next/lib/types.ts
index b5b9fb63f..92a39880e 100644
--- a/dashboards/open-brain-dashboard-next/lib/types.ts
+++ b/dashboards/open-brain-dashboard-next/lib/types.ts
@@ -77,7 +77,7 @@ export interface Reflection {
 }
 
 export interface IngestionJob {
-  id: number;
+  id: string;
   source_label: string;
   status: string;
   extracted_count: number;
@@ -142,8 +142,8 @@ export interface ReflectionInput {
 }
 
 export interface IngestionItem {
-  id: number | string;
-  job_id: number;
+  id: string;
+  job_id: string;
   content: string;
   type: string;
   fingerprint: string;
@@ -164,7 +164,7 @@ export type AddToBrainMode = "auto" | "single" | "extract";
 export interface AddToBrainResult {
   path: "single" | "extract";
   thought_id?: string;
-  job_id?: number;
+  job_id?: string;
   type?: string;
   status?: string;
   extracted_count?: number | null;
diff --git a/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/execute/route.ts b/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/execute/route.ts
index dda2ca3ea..d5a8af185 100644
--- a/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/execute/route.ts
+++ b/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/execute/route.ts
@@ -16,9 +16,11 @@ export async function POST(
 
   const { id } = await params;
 
-  // WR-04 / BL-03: Validate id is a positive integer before forwarding
-  const idNum = Number(id);
-  if (!Number.isInteger(idNum) || idNum <= 0) {
+  // WR-04 / BL-03: Validate id is a UUID before forwarding. OB1 ingestion job
+  // ids are UUIDs, not integers — the old positive-integer check rejected them.
+  const UUID_RE =
+    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+  if (!UUID_RE.test(id)) {
     return NextResponse.json({ error: "Invalid id" }, { status: 400 });
   }
 
@@ -34,7 +36,7 @@ export async function POST(
     // BL-03: Re-verify the session owns this job by fetching it first.
     // The REST gateway filters by the session's x-brain-key, so a 404/403 here
     // indicates the job is not visible to the caller.
-    const verifyRes = await fetch(`${API_URL}/ingestion-jobs/${idNum}`, {
+    const verifyRes = await fetch(`${API_URL}/ingestion-jobs/${id}`, {
       headers: { "x-brain-key": apiKey, "Content-Type": "application/json" },
     });
     if (!verifyRes.ok) {
@@ -43,7 +45,7 @@ export async function POST(
       // of a misleading "denied" message.
       if (verifyRes.status >= 500) {
         console.error(
-          `[ingest/[id]/execute] preflight upstream 5xx for job ${idNum}:`,
+          `[ingest/[id]/execute] preflight upstream 5xx for job ${id}:`,
           verifyRes.status
         );
         return NextResponse.json(
@@ -62,7 +64,7 @@ export async function POST(
       );
     }
 
-    const res = await fetch(`${API_URL}/ingestion-jobs/${idNum}/execute`, {
+    const res = await fetch(`${API_URL}/ingestion-jobs/${id}/execute`, {
       method: "POST",
       headers: { "x-brain-key": apiKey, "Content-Type": "application/json" },
     });
diff --git a/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/route.ts b/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/route.ts
index 8a89998bf..bf52458bc 100644
--- a/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/route.ts
+++ b/dashboards/open-brain-dashboard-pro/app/api/ingest/[id]/route.ts
@@ -13,15 +13,15 @@ function normalizeItem(raw: Record<string, unknown>): IngestionItem {
   };
 
   return {
-    id: raw.id as number,
-    job_id: raw.job_id as number,
+    id: raw.id as string,
+    job_id: raw.job_id as string,
     content: (raw.extracted_content ?? raw.content ?? "") as string,
     action: (raw.action ?? "skip") as string,
     reason: (raw.reason as string) ?? null,
     status: (raw.status ?? "pending") as string,
-    matched_thought_id: (raw.matched_thought_id as number) ?? null,
+    matched_thought_id: (raw.matched_thought_id as string) ?? null,
     similarity_score: raw.similarity_score != null ? Number(raw.similarity_score) : null,
-    result_thought_id: (raw.result_thought_id as number) ?? null,
+    result_thought_id: (raw.result_thought_id as string) ?? null,
     meta: parsedMeta,
   };
 }
@@ -41,9 +41,11 @@ export async function GET(
 
   const { id } = await params;
 
-  // WR-04: Validate id is a positive integer before forwarding
-  const idNum = Number(id);
-  if (!Number.isInteger(idNum) || idNum <= 0) {
+  // WR-04: Validate id is a UUID before forwarding. OB1 ingestion job ids are
+  // UUIDs, not integers — the old positive-integer check rejected them.
+  const UUID_RE =
+    /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+  if (!UUID_RE.test(id)) {
     return NextResponse.json({ error: "Invalid id" }, { status: 400 });
   }
 
@@ -56,7 +58,7 @@ export async function GET(
   }
 
   try {
-    const res = await fetch(`${API_URL}/ingestion-jobs/${idNum}`, {
+    const res = await fetch(`${API_URL}/ingestion-jobs/${id}`, {
       headers: { "x-brain-key": apiKey, "Content-Type": "application/json" },
     });
     const data = await res.json();
diff --git a/dashboards/open-brain-dashboard-pro/components/AddToBrain.tsx b/dashboards/open-brain-dashboard-pro/components/AddToBrain.tsx
index ddfcf4a02..9882f6f16 100644
--- a/dashboards/open-brain-dashboard-pro/components/AddToBrain.tsx
+++ b/dashboards/open-brain-dashboard-pro/components/AddToBrain.tsx
@@ -182,7 +182,7 @@ export function AddToBrain({
   const [executing, setExecuting] = useState(false);
   const [executeError, setExecuteError] = useState<string | null>(null);
 
-  const fetchJobDetail = useCallback(async (jobId: number) => {
+  const fetchJobDetail = useCallback(async (jobId: string) => {
     setLoadingDetail(true);
     try {
       const res = await fetch(`/api/ingest/${jobId}`);
diff --git a/dashboards/open-brain-dashboard-pro/lib/api.ts b/dashboards/open-brain-dashboard-pro/lib/api.ts
index 4afbfaf94..e35dfcdcd 100644
--- a/dashboards/open-brain-dashboard-pro/lib/api.ts
+++ b/dashboards/open-brain-dashboard-pro/lib/api.ts
@@ -247,7 +247,7 @@ export async function triggerIngest(
   apiKey: string,
   text: string,
   opts?: { dry_run?: boolean; skip_classification?: boolean }
-): Promise<{ job_id: number; status: string }> {
+): Promise<{ job_id: string; status: string }> {
   return apiFetch(apiKey, "/ingest", {
     method: "POST",
     body: JSON.stringify({ text, ...opts }),
diff --git a/dashboards/open-brain-dashboard-pro/lib/types.ts b/dashboards/open-brain-dashboard-pro/lib/types.ts
index 5d05bb130..d792b7bc5 100644
--- a/dashboards/open-brain-dashboard-pro/lib/types.ts
+++ b/dashboards/open-brain-dashboard-pro/lib/types.ts
@@ -13,7 +13,7 @@ export interface Thought {
 }
 
 export interface IngestionJob {
-  id: number;
+  id: string;
   source_label: string;
   status: string;
   extracted_count: number;
@@ -69,16 +69,16 @@ export interface IngestionItemMeta {
 }
 
 export interface IngestionItem {
-  id: number;
-  job_id: number;
+  id: string;
+  job_id: string;
   /** The extracted thought content (DB column: extracted_content) */
   content: string;
   action: string; // add, skip, create_revision, append_evidence
   reason: string | null;
   status: string;
-  matched_thought_id: number | null;
+  matched_thought_id: string | null;
   similarity_score: number | null;
-  result_thought_id: number | null;
+  result_thought_id: string | null;
   /** Parsed metadata — type, importance, tags, source_snippet */
   meta: IngestionItemMeta;
 }
@@ -93,7 +93,7 @@ export type AddToBrainMode = "auto" | "single" | "extract";
 export interface AddToBrainResult {
   path: "single" | "extract";
   thought_id?: number;
-  job_id?: number;
+  job_id?: string;
   type?: string;
   status?: string;
   extracted_count?: number | null;
diff --git a/integrations/smart-ingest/README.md b/integrations/smart-ingest/README.md
index cea6c8f62..1522794ca 100644
--- a/integrations/smart-ingest/README.md
+++ b/integrations/smart-ingest/README.md
@@ -173,7 +173,7 @@ You should get a response showing extracted thoughts and their reconciliation ac
 ```json
 {
   "status": "dry_run_complete",
-  "job_id": 1,
+  "job_id": "123e4567-e89b-12d3-a456-426614174000",
   "extracted_count": 3,
   "added_count": 3,
   "skipped_count": 0,
@@ -189,7 +189,7 @@ Once you're satisfied with the dry-run results, commit them to the database:
 curl -X POST "https://<your-project-ref>.supabase.co/functions/v1/smart-ingest/execute" \
   -H "Content-Type: application/json" \
   -H "x-brain-key: your-access-key" \
-  -d '{ "job_id": 1 }'
+  -d '{ "job_id": "123e4567-e89b-12d3-a456-426614174000" }'
 ```
 
 ### 5. Verify Results
@@ -237,7 +237,7 @@ Execute a previously dry-run job.
 
 | Parameter | Type | Description |
 |-----------|------|-------------|
-| `job_id` | number | ID of the dry-run job to execute |
+| `job_id` | string (UUID) | ID of the dry-run job to execute |
 | `skip_classification` | boolean | Override classification behavior for this execution |
 
 ## How It Connects to Other Components
diff --git a/integrations/smart-ingest/index.ts b/integrations/smart-ingest/index.ts
index b19c7560f..cac3ac940 100644
--- a/integrations/smart-ingest/index.ts
+++ b/integrations/smart-ingest/index.ts
@@ -141,14 +141,14 @@ interface IngestionItem {
   content_fingerprint: string;
   action: ReconcileAction;
   reason: string;
-  matched_thought_id: number | null;
+  matched_thought_id: string | null;
   similarity_score: number | null;
   status: "pending" | "executed" | "failed";
   error_message: string | null;
 }
 
 interface IngestionJob {
-  id?: number;
+  id?: string;
   input_hash: string;
   source_label: string | null;
   source_type: string | null;
@@ -164,8 +164,8 @@ interface IngestionJob {
 }
 
 type UpsertThoughtResult = {
-  thought_id?: number;
-  id?: number;
+  thought_id?: string;
+  id?: string;
 };
 
 // ── Auth ────────────────────────────────────────────────────────────────────
@@ -347,15 +347,17 @@ function mergeTags(existing: unknown, extras: string[]): string[] {
   ]);
 }
 
-function extractThoughtId(value: unknown): number | null {
-  if (typeof value === "number" && Number.isFinite(value)) return value;
+function extractThoughtId(value: unknown): string | null {
+  // OB1 thought ids are UUIDs (strings). A successful upsert_thought may return
+  // the id as a bare string, or wrapped as { thought_id } / { id }.
+  if (typeof value === "string" && value.trim().length > 0) return value;
   if (value && typeof value === "object" && "thought_id" in value) {
     const thoughtId = (value as UpsertThoughtResult).thought_id;
-    if (typeof thoughtId === "number" && Number.isFinite(thoughtId)) return thoughtId;
+    if (typeof thoughtId === "string" && thoughtId.trim().length > 0) return thoughtId;
   }
   if (value && typeof value === "object" && "id" in value) {
     const id = (value as UpsertThoughtResult).id;
-    if (typeof id === "number" && Number.isFinite(id)) return id;
+    if (typeof id === "string" && id.trim().length > 0) return id;
   }
   return null;
 }
@@ -595,7 +597,7 @@ async function reconcileThought(
     tags: thought.tags,
     source_snippet: thought.source_snippet,
     content_fingerprint: fingerprint,
-    matched_thought_id: null as number | null,
+    matched_thought_id: null as string | null,
     similarity_score: null as number | null,
   };
 
@@ -649,7 +651,7 @@ async function reconcileThought(
 
   const topMatch = matches[0];
   const similarity = topMatch.similarity as number;
-  const matchedId = topMatch.id as number;
+  const matchedId = topMatch.id as string;
   const existingContent = (topMatch.content ?? "") as string;
 
   base.matched_thought_id = matchedId;
@@ -679,7 +681,7 @@ async function executeItem(
   sourceType: string | null,
   sourceMetadata?: Record<string, unknown> | null,
   skipClassification = false,
-): Promise<number | null> {
+): Promise<string | null> {
   switch (item.action) {
     case "add": {
       const prepared = await prepareThoughtPayload(item.content, {
@@ -822,7 +824,7 @@ async function createJob(
   job: IngestionJob,
   sourceMetadata?: Record<string, unknown> | null,
   inputLength: number = 0,
-): Promise<number> {
+): Promise<string> {
   const { data, error } = await supabase.from("ingestion_jobs").insert({
     input_hash: job.input_hash,
     source_label: job.source_label,
@@ -833,13 +835,13 @@ async function createJob(
   }).select("id").single();
   if (error) {
     console.error("Failed to create ingestion_jobs row:", error.message);
-    return 0;
+    return "";
   }
-  return data?.id ?? 0;
+  return data?.id ?? "";
 }
 
 async function updateJobById(
-  jobId: number,
+  jobId: string,
   updates: Record<string, unknown>,
 ): Promise<{ ok: boolean; error?: string }> {
   const { data, error } = await supabase
@@ -849,21 +851,21 @@ async function updateJobById(
     .select("id, status")
     .maybeSingle();
   if (error) {
-    console.error(`Failed to update job #${jobId}: ${error.message} (code: ${error.code}, details: ${error.details})`);
+    console.error(`Failed to update job ${jobId}: ${error.message} (code: ${error.code}, details: ${error.details})`);
     return { ok: false, error: `${error.code}: ${error.message}` };
   }
   if (!data) {
-    console.error(`updateJobById: update matched 0 rows for job #${jobId}`);
-    return { ok: false, error: `No row matched for job #${jobId}` };
+    console.error(`updateJobById: update matched 0 rows for job ${jobId}`);
+    return { ok: false, error: `No row matched for job ${jobId}` };
   }
   return { ok: true };
 }
 
 async function persistItems(
-  jobId: number,
+  jobId: string,
   items: IngestionItem[],
   sourceMetadata?: Record<string, unknown> | null,
-): Promise<number[]> {
+): Promise<string[]> {
   if (items.length === 0 || !jobId) return [];
   const rows = items.map((item) => ({
     job_id: jobId,
@@ -887,21 +889,26 @@ async function persistItems(
     console.error("Failed to persist ingestion_items:", error.message);
     return [];
   }
-  return (data ?? []).map((row: { id: number }) => row.id);
+  return (data ?? []).map((row: { id: string }) => row.id);
 }
 
 // ── Execute a dry-run job ───────────────────────────────────────────────────
 
+// OB1 ingestion_jobs.id is a UUID; reject anything that is not a UUID string.
+const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+
 async function handleExecuteJob(req: Request): Promise<Response> {
   let body: Record<string, unknown>;
   try { body = await req.json(); } catch { return json({ error: "Invalid JSON body" }, 400); }
 
-  const jobId = typeof body.job_id === "number" ? body.job_id : 0;
-  if (!jobId) return json({ error: "job_id is required" }, 400);
+  const jobId = typeof body.job_id === "string" && UUID_RE.test(body.job_id.trim())
+    ? body.job_id.trim()
+    : "";
+  if (!jobId) return json({ error: "job_id is required (must be a UUID)" }, 400);
 
   const { data: job, error: jobErr } = await supabase
     .from("ingestion_jobs").select("*").eq("id", jobId).single();
-  if (jobErr || !job) return json({ error: `Job #${jobId} not found` }, 404);
+  if (jobErr || !job) return json({ error: `Job ${jobId} not found` }, 404);
   if (job.status === "complete") return json({ ...job, message: "Job already complete" }, 200);
   if (job.status !== "dry_run_complete") {
     return json({ error: `Job status is '${job.status}', expected 'dry_run_complete'` }, 400);
@@ -1191,7 +1198,7 @@ Deno.serve(async (req) => {
   }
 
   // Persist items to ingestion_items table
-  let itemIds: number[] = [];
+  let itemIds: string[] = [];
   if (jobId) itemIds = await persistItems(jobId, items, sourceMetadata);
 
   if (dryRun) {
@@ -1234,7 +1241,7 @@ Deno.serve(async (req) => {
   }
   for (let i = 0; i < items.length; i++) {
     const item = items[i];
-    const itemDbId = itemIds[i] ?? 0;
+    const itemDbId = itemIds[i] ?? "";
     if (item.action === "skip") {
       item.status = "executed";
       if (itemDbId) await supabase.from("ingestion_items").update({ status: "executed" }).eq("id", itemDbId);