diff --git a/ampg/manifest.py b/ampg/manifest.py
index 247ec2b..e11f1b6 100644
--- a/ampg/manifest.py
+++ b/ampg/manifest.py
@@ -72,6 +72,7 @@ def _fixture_entry(site: SiteConfig, protocol: ProtocolConfig) -> dict[str, Any]
             "transport": transport,
             "profile": transport,
         },
+        "interaction": _interaction_policy(protocol),
     }
 
 
@@ -81,6 +82,16 @@ def _transport_for(protocol_name: str) -> str:
     return protocol_name
 
 
+def _interaction_policy(protocol: ProtocolConfig) -> dict[str, Any]:
+    return {
+        "tier": str(protocol.options.get("tier", protocol.options.get("max_tier", "static"))),
+        "identity": str(protocol.options.get("identity", "none")),
+        "payments": str(protocol.options.get("payments", "none")),
+        "realtime": bool(protocol.options.get("realtime", False)),
+        "public_allowed": bool(protocol.options.get("public_allowed", True)),
+    }
+
+
 def _fixture_url(site: SiteConfig, protocol: ProtocolConfig) -> tuple[str, str]:
     configured_url = protocol.options.get("fixture_url") or protocol.options.get("browser_url")
     if configured_url:
diff --git a/docs/fixture-manifests.md b/docs/fixture-manifests.md
index c50ee82..03ee876 100644
--- a/docs/fixture-manifests.md
+++ b/docs/fixture-manifests.md
@@ -20,6 +20,8 @@ The manifest contains public route expectations only:
 - protocol renderer and relative output path.
 - route URL for AMPB checks.
 - expected AMPB transport and profile.
+- declared interaction tier, identity adapter, payment adapter, realtime flag, and
+  public exposure flag.
 
 It must not contain private host inventory, hidden-service keys, tunnel keys, credentials,
 or deployment notes.
@@ -39,3 +41,20 @@ manifest and does not rebuild protocol outputs.
 Some transports may not have final public addresses when a fixture is generated. In those
 cases AMPG uses route-valid placeholders such as `http://wownero.onion/` so AMPB can still
 verify transport selection without contacting the network.
+
+## Interaction Policy
+
+Fixture interaction policy defaults to:
+
+```json
+{
+  "tier": "static",
+  "identity": "none",
+  "payments": "none",
+  "realtime": false,
+  "public_allowed": true
+}
+```
+
+Route-group overrides will be added separately. Until then, protocol-level options can
+declare the fixture-level policy that AMPB should check.
diff --git a/tests/test_fixture_manifest.py b/tests/test_fixture_manifest.py
index e9173bf..de8b32c 100644
--- a/tests/test_fixture_manifest.py
+++ b/tests/test_fixture_manifest.py
@@ -73,6 +73,61 @@ cid = "bafyexample"
             self.assertEqual("gemini://example.test/", by_protocol["gemini"]["url"])
             self.assertEqual("ipfs://bafyexample", by_protocol["ipfs"]["url"])
             self.assertEqual({"transport": "ipfs", "profile": "ipfs"}, by_protocol["ipfs"]["checks"])
+            self.assertEqual(
+                {
+                    "identity": "none",
+                    "payments": "none",
+                    "public_allowed": True,
+                    "realtime": False,
+                    "tier": "static",
+                },
+                by_protocol["ipfs"]["interaction"],
+            )
+
+    def test_manifest_includes_configured_interaction_policy(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            root = Path(tmp)
+            source = root / "site"
+            source.mkdir()
+            (source / "index.html").write_text("<h1>Store</h1>", encoding="utf-8")
+            config_path = root / "gateway.toml"
+            config_path.write_text(
+                """
+[[site]]
+id = "store"
+domain = "store.test"
+
+[site.source]
+kind = "static-html"
+path = "./site"
+
+[site.outputs]
+root = "./out"
+plan_root = "./plan"
+
+[site.protocols.tor]
+enabled = true
+renderer = "privacy-html"
+tier = "transactional"
+identity = "http-session"
+payments = "server-invoice"
+""",
+                encoding="utf-8",
+            )
+
+            config = load_config(config_path)
+            manifest = fixture_manifest(config.sites[0])
+
+        self.assertEqual(
+            {
+                "identity": "http-session",
+                "payments": "server-invoice",
+                "public_allowed": True,
+                "realtime": False,
+                "tier": "transactional",
+            },
+            manifest["fixtures"][0]["interaction"],
+        )
 
 
 if __name__ == "__main__":