diff --git a/packages/plugins/semantic-search/src/sdk/collections.ts b/packages/plugins/semantic-search/src/sdk/collections.ts
index d17064e4e..722fe09bb 100644
--- a/packages/plugins/semantic-search/src/sdk/collections.ts
+++ b/packages/plugins/semantic-search/src/sdk/collections.ts
@@ -70,6 +70,7 @@ export const IndexJob = Schema.Struct({
   name: Schema.String,
   integration: Schema.String,
   description: Schema.String,
+  sourceRevision: Schema.optional(Schema.String),
   status: IndexJobStatus,
   fingerprint: Schema.optional(Schema.String),
   oldFingerprint: Schema.optional(Schema.String),
diff --git a/packages/plugins/semantic-search/src/sdk/tool-search-index.test.ts b/packages/plugins/semantic-search/src/sdk/tool-search-index.test.ts
index 1c1b77bb2..111b1a147 100644
--- a/packages/plugins/semantic-search/src/sdk/tool-search-index.test.ts
+++ b/packages/plugins/semantic-search/src/sdk/tool-search-index.test.ts
@@ -67,6 +67,7 @@ const makeMemoryCache = (): Executor["cache"] => {
 const manifestForTool = (
   tool: Tool,
   fingerprint = `fingerprint:${String(tool.address)}`,
+  sourceRevision?: string,
 ): ToolSchemaManifest => ({
   address: tool.address,
   path: String(tool.address).replace(/^tools\./, ""),
@@ -82,6 +83,7 @@ const manifestForTool = (
   definitionSetHash: `definitions:${String(tool.address)}`,
   indexFingerprint: fingerprint,
   fingerprintVersion: "tool-schema-manifest/v1",
+  ...(sourceRevision === undefined ? {} : { sourceRevision }),
 });
 
 const makeExecutor = (
@@ -327,6 +329,7 @@ describe("ToolSearchIndex", () => {
       }
 
       expect(scanned).toMatchObject({ processed: 1, changed: 1, skipped: 0 });
+      expect([...jobs.data.values()][0]?.sourceRevision).toBeUndefined();
       expect(chunked.processed).toBe(1);
       expect(chunked.chunks).toBeGreaterThan(0);
       expect(embedded).toMatchObject({ processed: chunked.chunks, chunks: chunked.chunks });
@@ -350,6 +353,84 @@ describe("ToolSearchIndex", () => {
     }),
   );
 
+  it.effect("copies manifest source revisions into scan jobs", () =>
+    Effect.gen(function* () {
+      const tool: Tool = {
+        address: "tools.github.repos.get" as never,
+        name: "repos.get" as never,
+        integration: "github" as never,
+        description: "Get a repository",
+        owner,
+        connection: "default" as never,
+        pluginId: "test",
+      };
+      const executor: Pick<Executor, "tools" | "cache"> = {
+        tools: {
+          list: () => Effect.succeed([tool]),
+          manifest: () => Effect.succeed([manifestForTool(tool, "fp-source", "spec-hash-v1")]),
+          schema: () => Effect.succeed(null),
+        },
+        cache: makeMemoryCache(),
+      };
+      const base = {
+        namespace,
+        executor: executor as Executor,
+        runs: makeCollection<IndexRun>(indexRuns.name),
+        jobs: makeCollection<IndexJob>(indexJobs.name),
+        chunks: makeCollection<IndexChunk>(indexChunks.name),
+        fingerprints: makeCollection<FingerprintRow>(toolFingerprints.name),
+        blobs: makeBlobs(),
+        owner,
+      };
+
+      yield* create({ ...base, runId: "run-source-revision", partitionCount: 1 });
+      const scanned = yield* scan({
+        ...base,
+        runId: "run-source-revision",
+        partition: 0,
+        limit: 10,
+      });
+
+      expect(scanned).toMatchObject({ processed: 1, changed: 1, skipped: 0 });
+      expect([...base.jobs.data.values()][0]).toMatchObject({
+        path: "github.repos.get",
+        fingerprint: "fp-source",
+        sourceRevision: "spec-hash-v1",
+      });
+
+      const skippedBase = {
+        ...base,
+        jobs: makeCollection<IndexJob>(indexJobs.name),
+        fingerprints: makeCollection<FingerprintRow>(toolFingerprints.name),
+      };
+      yield* skippedBase.fingerprints.put({
+        owner,
+        key: "github.repos.get",
+        data: {
+          path: "github.repos.get",
+          integration: "github",
+          fingerprint: "fp-source",
+          chunkIds: [],
+        },
+      });
+
+      yield* create({ ...skippedBase, runId: "run-source-revision-skipped", partitionCount: 1 });
+      const skipped = yield* scan({
+        ...skippedBase,
+        runId: "run-source-revision-skipped",
+        partition: 0,
+        limit: 10,
+      });
+
+      expect(skipped).toMatchObject({ processed: 1, changed: 0, skipped: 1 });
+      expect([...skippedBase.jobs.data.values()][0]).toMatchObject({
+        path: "github.repos.get",
+        fingerprint: "fp-source",
+        sourceRevision: "spec-hash-v1",
+      });
+    }),
+  );
+
   it.effect("marks pending path work failed and reports progress timestamps", () =>
     Effect.gen(function* () {
       const counters = { raw: 0, codegen: 0 };
diff --git a/packages/plugins/semantic-search/src/sdk/tool-search-index.ts b/packages/plugins/semantic-search/src/sdk/tool-search-index.ts
index 2a2b539fa..07acafda0 100644
--- a/packages/plugins/semantic-search/src/sdk/tool-search-index.ts
+++ b/packages/plugins/semantic-search/src/sdk/tool-search-index.ts
@@ -1092,6 +1092,9 @@ export const scan = (
               name: manifest.name,
               integration: manifest.integration,
               description: manifest.description,
+              ...(manifest.sourceRevision === undefined
+                ? {}
+                : { sourceRevision: manifest.sourceRevision }),
               status: "skipped",
               fingerprint: manifest.indexFingerprint,
               oldFingerprint: storedRow.fingerprint,
@@ -1110,6 +1113,9 @@ export const scan = (
               name: manifest.name,
               integration: manifest.integration,
               description: manifest.description,
+              ...(manifest.sourceRevision === undefined
+                ? {}
+                : { sourceRevision: manifest.sourceRevision }),
               status: "pendingChunk",
               fingerprint: manifest.indexFingerprint,
               oldFingerprint: storedRow?.fingerprint,