diff --git a/services/cubejs/src/routes/discover.js b/services/cubejs/src/routes/discover.js
index d1e7c50c..330bd301 100644
--- a/services/cubejs/src/routes/discover.js
+++ b/services/cubejs/src/routes/discover.js
@@ -160,6 +160,8 @@ export default async function discover(req, res) {
             "WebSocket endpoint for GraphQL subscriptions (proxied to Hasura). Same auth as /v1/graphql.",
           "GET  /api/v1/meta":
             "Cube metadata — lists all cubes, measures, dimensions, and segments for the selected datasource.",
+          "GET  /api/v1/meta-all":
+            "Aggregated cube summaries across every visible datasource. No datasource headers required. Returns cube name/title/description, measure/dimension/segment names, and cube-level meta.",
           "POST /api/v1/load":
             "Run a Cube.js query. Supports format=csv|jsonstat|arrow|json (default json).",
           "GET  /api/v1/sql":
diff --git a/services/cubejs/src/routes/index.js b/services/cubejs/src/routes/index.js
index 82439ba0..a23dbbe7 100644
--- a/services/cubejs/src/routes/index.js
+++ b/services/cubejs/src/routes/index.js
@@ -28,6 +28,7 @@ import smartGenerate from "./smartGenerate.js";
 import columnValues from "./columnValues.js";
 import discoverNested from "./discoverNested.js";
 import discover from "./discover.js";
+import metaAll from "./metaAll.js";
 import testConnection from "./testConnection.js";
 import validate from "./validate.js";
 import version from "./version.js";
@@ -269,6 +270,11 @@ export default ({ basePath, cubejs }) => {
   // Discovery endpoint — WorkOS auth only, no datasource selection required
   router.get(`${basePath}/v1/discover`, async (req, res) => discover(req, res));
 
+  // Aggregated meta across all visible datasources — WorkOS/FraiOS auth only
+  router.get(`${basePath}/v1/meta-all`, async (req, res) =>
+    metaAll(req, res, cubejs)
+  );
+
   // Version endpoint is public — returns only the schema-compiler version string
   router.get(`${basePath}/v1/version`, (req, res) => version(req, res));
 
diff --git a/services/cubejs/src/routes/metaAll.js b/services/cubejs/src/routes/metaAll.js
new file mode 100644
index 00000000..cf7df66b
--- /dev/null
+++ b/services/cubejs/src/routes/metaAll.js
@@ -0,0 +1,189 @@
+import { randomUUID } from "crypto";
+
+import {
+  detectTokenType,
+  verifyWorkOSToken,
+  verifyFraiOSToken,
+} from "../utils/workosAuth.js";
+import {
+  findUser,
+  provisionUserFromWorkOS,
+  provisionUserFromFraiOS,
+} from "../utils/dataSourceHelpers.js";
+import defineUserScope from "../utils/defineUserScope.js";
+import { resolvePartitionTeamIds } from "./discover.js";
+
+function getRequestId(req) {
+  return (
+    req.get?.("x-request-id") ||
+    req.get?.("traceparent") ||
+    `${randomUUID()}-span-1`
+  );
+}
+
+function summarizeCube(cube, ds, branchId, versionId) {
+  const node = cube?.config || cube || {};
+  return {
+    datasource_id: ds.id,
+    datasource_name: ds.name,
+    db_type: ds.db_type,
+    team_id: ds.team_id,
+    branch_id: branchId,
+    version_id: versionId,
+    name: node.name,
+    title: node.title || null,
+    description: node.description || null,
+    public: node.public !== false,
+    measures: (node.measures || []).map((m) => m.name),
+    dimensions: (node.dimensions || []).map((d) => d.name),
+    segments: (node.segments || []).map((s) => s.name),
+    meta: node.meta || null,
+  };
+}
+
+async function metaForDatasource(apiGateway, req, userId, authToken, ds, allMembers) {
+  const activeBranch =
+    ds.branches?.find((b) => b.status === "active") || ds.branches?.[0];
+  if (!activeBranch) {
+    throw Object.assign(new Error("no active branch"), { status: 400 });
+  }
+  const latestVersion = activeBranch.versions?.[0] || null;
+
+  const userScope = defineUserScope(
+    [ds],
+    allMembers,
+    ds.id,
+    activeBranch.id,
+    latestVersion?.id
+  );
+
+  const securityContext = { authToken, userId, userScope };
+  const context = await apiGateway.contextByReq(
+    req,
+    securityContext,
+    getRequestId(req)
+  );
+
+  const compilerApi = await apiGateway.getCompilerApi(context);
+  let metaConfig = await compilerApi.metaConfig(context, {
+    requestId: context.requestId,
+  });
+  metaConfig = apiGateway.filterVisibleItemsInMeta(context, metaConfig);
+
+  const cubes = (metaConfig || []).map((entry) =>
+    summarizeCube(entry, ds, activeBranch.id, latestVersion?.id || null)
+  );
+
+  return {
+    datasource_id: ds.id,
+    datasource_name: ds.name,
+    db_type: ds.db_type,
+    team_id: ds.team_id,
+    branch_id: activeBranch.id,
+    version_id: latestVersion?.id || null,
+    cubes,
+  };
+}
+
+/**
+ * GET /api/v1/meta-all
+ *
+ * Aggregated cube catalog across every datasource the caller can see.
+ * One request walks all partition-filtered datasources, resolves their
+ * active branch + latest version, compiles each, and returns a summary
+ * per cube (name, title, description, measures, dimensions, segments, meta).
+ *
+ * Auth: WorkOS RS256 or FraiOS HS256 Bearer token (same as /discover).
+ *
+ * Response:
+ * {
+ *   datasources: [
+ *     {
+ *       datasource_id, datasource_name, db_type, team_id,
+ *       branch_id, version_id,
+ *       cubes: [{ datasource_id, ..., name, title, description, public,
+ *                 measures: string[], dimensions: string[], segments: string[],
+ *                 meta: object | null }]
+ *     }
+ *   ],
+ *   errors?: [{ datasource_id, error }]
+ * }
+ */
+export default async function metaAll(req, res, cubejs) {
+  try {
+    const authHeader = req.headers.authorization;
+    if (!authHeader) {
+      return res.status(403).json({ error: "Authorization header required" });
+    }
+
+    const token = authHeader.startsWith("Bearer ")
+      ? authHeader.split(" ")[1]
+      : authHeader;
+
+    if (!token) {
+      return res.status(403).json({ error: "Bearer token required" });
+    }
+
+    const tokenType = detectTokenType(token);
+    let payload;
+    let userId;
+
+    if (tokenType === "workos") {
+      payload = await verifyWorkOSToken(token);
+      userId = await provisionUserFromWorkOS(payload);
+    } else if (tokenType === "fraios") {
+      payload = await verifyFraiOSToken(token);
+      userId = await provisionUserFromFraiOS(payload);
+    } else {
+      return res
+        .status(403)
+        .json({ error: "WorkOS or FraiOS token required" });
+    }
+
+    const user = await findUser({ userId });
+    if (!user.dataSources?.length) {
+      return res.json({ datasources: [] });
+    }
+
+    const partitionTeamIds = resolvePartitionTeamIds(
+      user.members,
+      payload.partition
+    );
+    const filtered = partitionTeamIds
+      ? user.dataSources.filter((ds) => partitionTeamIds.has(ds.team_id))
+      : user.dataSources;
+
+    const apiGateway = cubejs.apiGateway();
+
+    const settled = await Promise.allSettled(
+      filtered.map((ds) =>
+        metaForDatasource(apiGateway, req, userId, token, ds, user.members)
+      )
+    );
+
+    const datasources = [];
+    const errors = [];
+    settled.forEach((r, i) => {
+      if (r.status === "fulfilled") {
+        datasources.push(r.value);
+      } else {
+        errors.push({
+          datasource_id: filtered[i].id,
+          error: r.reason?.message || "unknown error",
+        });
+      }
+    });
+
+    const body = { datasources };
+    if (errors.length) body.errors = errors;
+    res.json(body);
+  } catch (err) {
+    const status = err.status || 500;
+    if (status >= 500) {
+      console.error("meta-all error:", err);
+    }
+    res.status(status).json({
+      error: status >= 500 ? "Internal server error" : err.message,
+    });
+  }
+}