diff --git a/src/framework.ts b/src/framework.ts
index 19187bb..baa3f48 100644
--- a/src/framework.ts
+++ b/src/framework.ts
@@ -8926,6 +8926,16 @@ export class AgentFramework {
     deniedCapabilities: string[];
     /** Host-owned authority; deliberately separate from the portable grant. */
     allowHostCommands: boolean;
+    /**
+     * Per-transport §17 facts about the last manifest this host fetched and
+     * acted on. The revision is server-authored and equality-only; these are
+     * not the server's manifestChanged announcements.
+     */
+    manifestState: {
+      lastValidatedRevision: string | null;
+      lastFetchedAt: number | null;
+      lastNegotiatedAt: number | null;
+    };
     command?: string;
     url?: string;
   }> {
@@ -8934,6 +8944,11 @@ export class AgentFramework {
       toolPrefix: string; toolCount: number; policyEstablished: boolean;
       effectiveGrant: string[]; maskedCapabilities: string[];
       deniedCapabilities: string[]; allowHostCommands: boolean;
+      manifestState: {
+        lastValidatedRevision: string | null;
+        lastFetchedAt: number | null;
+        lastNegotiatedAt: number | null;
+      };
       command?: string; url?: string;
     }> = [];
     for (const [id, config] of this.mcplServerConfigs) {
@@ -8951,6 +8966,9 @@ export class AgentFramework {
         maskedCapabilities: [...(connection?.droppedCapabilities ?? [])].sort(),
         deniedCapabilities: [...(connection?.grant.deniedPaths ?? [])].sort(),
         allowHostCommands: config.allowHostCommands === true,
+        manifestState: connection
+          ? { ...connection.manifestState }
+          : { lastValidatedRevision: null, lastFetchedAt: null, lastNegotiatedAt: null },
         command: config.command,
         url: config.url,
       });
diff --git a/test/mcpl-list-status.test.ts b/test/mcpl-list-status.test.ts
index 3bf10f5..5db04da 100644
--- a/test/mcpl-list-status.test.ts
+++ b/test/mcpl-list-status.test.ts
@@ -22,15 +22,22 @@ test('listMcplServers exposes the live grant layers and host-owned authority', (
     new Set(['channels.incoming', 'channels.publish']),
     ['contextHooks.beforeInference.inject.system'],
   );
-  const framework = frameworkWithConnection({
+  const connection = {
     isConnected: true,
     willReconnect: true,
     policyEstablished: true,
     grant,
     droppedCapabilities: new Set(['channels.streaming']),
-  });
+    manifestState: {
+      lastValidatedRevision: 'sha256:validated',
+      lastFetchedAt: 1_786_000_000_000,
+      lastNegotiatedAt: 1_786_000_000_100,
+    },
+  };
+  const framework = frameworkWithConnection(connection);
 
-  assert.deepEqual(framework.listMcplServers(), [{
+  const listed = framework.listMcplServers();
+  assert.deepEqual(listed, [{
     id: 'discord',
     connected: true,
     retrying: false,
@@ -41,9 +48,15 @@ test('listMcplServers exposes the live grant layers and host-owned authority', (
     maskedCapabilities: ['channels.streaming'],
     deniedCapabilities: ['contextHooks.beforeInference.inject.system'],
     allowHostCommands: true,
+    manifestState: {
+      lastValidatedRevision: 'sha256:validated',
+      lastFetchedAt: 1_786_000_000_000,
+      lastNegotiatedAt: 1_786_000_000_100,
+    },
     command: 'node',
     url: undefined,
   }]);
+  assert.notStrictEqual(listed[0]!.manifestState, connection.manifestState);
 });
 
 test('listMcplServers distinguishes a disconnected retrying stub from connected', () => {
@@ -53,6 +66,11 @@ test('listMcplServers distinguishes a disconnected retrying stub from connected'
     policyEstablished: false,
     grant: CapabilityGrant.empty(),
     droppedCapabilities: new Set<string>(),
+    manifestState: {
+      lastValidatedRevision: null,
+      lastFetchedAt: null,
+      lastNegotiatedAt: null,
+    },
   });
 
   const [status] = framework.listMcplServers();
@@ -60,4 +78,9 @@ test('listMcplServers distinguishes a disconnected retrying stub from connected'
   assert.equal(status.retrying, true);
   assert.equal(status.policyEstablished, false);
   assert.deepEqual(status.effectiveGrant, []);
+  assert.deepEqual(status.manifestState, {
+    lastValidatedRevision: null,
+    lastFetchedAt: null,
+    lastNegotiatedAt: null,
+  });
 });