diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4b3206dde..a76a10d28 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Added ask sidebar to homepage. [#721](https://github.com/sourcebot-dev/sourcebot/pull/721)
 - Added endpoint for searching commit history for a git repository. [#625](https://github.com/sourcebot-dev/sourcebot/pull/625)
+- Added `pushedAt` field to the Repo table to track when a repository last was committed to across all branches. [#790](https://github.com/sourcebot-dev/sourcebot/pull/790)
 
 ## [4.10.17] - 2026-01-23
 
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 000000000..f95cf5baa
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,19 @@
+# Claude Code Guidelines
+
+## Database Migrations
+
+When creating Prisma database migrations, run from the repository root:
+
+```bash
+yarn dev:prisma:migrate:dev --name <migration_name>
+```
+
+Do NOT use `npx prisma migrate dev` directly from packages/db.
+
+## Building Packages
+
+To build a specific package:
+
+```bash
+yarn workspace @sourcebot/<package-name> build
+```
diff --git a/packages/backend/src/git.ts b/packages/backend/src/git.ts
index cc99e2837..4fa43ac8a 100644
--- a/packages/backend/src/git.ts
+++ b/packages/backend/src/git.ts
@@ -369,3 +369,39 @@ export const getLocalDefaultBranch = async ({
         return undefined;
     }
 }
+
+/**
+ * Gets the timestamp of the most recent commit across all branches.
+ *
+ * @returns The Date of the most recent commit, or undefined if the repository
+ *          is empty or if there's an error retrieving the timestamp.
+ */
+export const getLatestCommitTimestamp = async ({
+    path,
+}: {
+    path: string,
+}): Promise<Date | undefined> => {
+    const git = createGitClientForPath(path);
+
+    try {
+        // git log --all -1 --format=%aI returns the author date of the most recent commit
+        // across all branches in ISO 8601 format
+        const result = await git.raw(['log', '--all', '-1', '--format=%aI']);
+        const trimmed = result.trim();
+
+        if (!trimmed) {
+            return undefined; // Empty repository
+        }
+
+        const date = new Date(trimmed);
+        if (isNaN(date.getTime())) {
+            logger.warn(`Failed to parse commit timestamp: ${trimmed}`);
+            return undefined;
+        }
+
+        return date;
+    } catch (error) {
+        logger.debug(`Failed to get latest commit timestamp for ${path}:`, error);
+        return undefined;
+    }
+}
diff --git a/packages/backend/src/repoIndexManager.ts b/packages/backend/src/repoIndexManager.ts
index 9f03c1d2b..8e499863a 100644
--- a/packages/backend/src/repoIndexManager.ts
+++ b/packages/backend/src/repoIndexManager.ts
@@ -8,7 +8,7 @@ import { Job, Queue, ReservedJob, Worker } from "groupmq";
 import { Redis } from 'ioredis';
 import micromatch from 'micromatch';
 import { GROUPMQ_WORKER_STOP_GRACEFUL_TIMEOUT_MS, INDEX_CACHE_DIR } from './constants.js';
-import { cloneRepository, fetchRepository, getBranches, getCommitHashForRefName, getLocalDefaultBranch, getTags, isPathAValidGitRepoRoot, unsetGitConfig, upsertGitConfig } from './git.js';
+import { cloneRepository, fetchRepository, getBranches, getCommitHashForRefName, getLatestCommitTimestamp, getLocalDefaultBranch, getTags, isPathAValidGitRepoRoot, unsetGitConfig, upsertGitConfig } from './git.js';
 import { captureEvent } from './posthog.js';
 import { PromClient } from './promClient.js';
 import { RepoWithConnections, Settings } from "./types.js";
@@ -489,6 +489,8 @@ export class RepoIndexManager {
                     refName: 'HEAD',
                 });
 
+                const pushedAt = await getLatestCommitTimestamp({ path: repoPath });
+
                 const jobMetadata = repoIndexingJobMetadataSchema.parse(jobData.metadata);
 
                 const repo = await this.db.repo.update({
@@ -496,6 +498,7 @@ export class RepoIndexManager {
                     data: {
                         indexedAt: new Date(),
                         indexedCommitHash: commitHash,
+                        pushedAt: pushedAt,
                         metadata: {
                             ...(jobData.repo.metadata as RepoMetadata),
                             indexedRevisions: jobMetadata.indexedRevisions,
diff --git a/packages/db/prisma/migrations/20260124232658_add_pushed_at_to_repo/migration.sql b/packages/db/prisma/migrations/20260124232658_add_pushed_at_to_repo/migration.sql
new file mode 100644
index 000000000..b9da84355
--- /dev/null
+++ b/packages/db/prisma/migrations/20260124232658_add_pushed_at_to_repo/migration.sql
@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Repo" ADD COLUMN     "pushedAt" TIMESTAMP(3);
diff --git a/packages/db/prisma/schema.prisma b/packages/db/prisma/schema.prisma
index fc6418eea..6c0affcce 100644
--- a/packages/db/prisma/schema.prisma
+++ b/packages/db/prisma/schema.prisma
@@ -68,6 +68,7 @@ model Repo {
   indexedAt          DateTime? /// When the repo was last indexed successfully.
   indexedCommitHash  String? /// The commit hash of the last indexed commit (on HEAD).
   latestIndexingJobStatus RepoIndexingJobStatus? /// The status of the latest indexing job.
+  pushedAt           DateTime? /// The timestamp of the most recent commit across all branches.
 
   external_id           String /// The id of the repo in the external service
   external_codeHostType CodeHostType /// The type of the external service (e.g., github, gitlab, etc.)