v2.0.1 — support FastMCP Code Mode (nested tool calls and listings)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "agentcat"
-version = "2.0.0"
+version = "2.0.1"
 description = "Analytics tool for MCP (Model Context Protocol) servers, Claude Connectors, and ChatGPT Plugins - tracks tool usage patterns and provides insights"
 authors = [
     { name = "AgentCat, Inc.", email = "support@agentcat.com" },

src/agentcat/modules/callpath.py

@@ -272,6 +272,7 @@ async def publish_tool_call_event(
     duration_ms: int | None,
     mrtr: str | None,
     extra_params: dict[str, Any] | None,
+    nested: bool = False,
 ) -> None:
     """Publish the one event a v2 tool call produces. Never raises.
 
@@ -312,7 +313,7 @@ async def publish_tool_call_event(
         # from the customer cap.
         event.tags = {
             **(event.tags or {}),
-            **build_handle_tags(rc.resolution, rc.protocol_version, mrtr),
+            **build_handle_tags(rc.resolution, rc.protocol_version, mrtr, nested),
         }
         event_queue.publish_event(server_key, event)
     except Exception as e:

src/agentcat/modules/constants.py

@@ -34,6 +34,10 @@
 AGENTCAT_TAG_AGENT_SOURCE = "agentcat_agent_id_source"
 AGENTCAT_TAG_PROTOCOL_VERSION = "agentcat_protocol_version"
 AGENTCAT_TAG_MRTR = "agentcat_mrtr"
+# Presence-gated: rides only on tools/call events the customer's own server
+# made from inside another tracked call (a code-mode sandbox, a tool calling
+# a sibling tool). Value is always "true"; absent on agent-facing calls.
+AGENTCAT_TAG_NESTED = "agentcat_nested"
 AGENTCAT_CUSTOM_EVENT_TYPE = "agentcat:custom"
 
 # ── Explicit handles: agent-facing copy (byte-identical to TS constants.ts) ──

src/agentcat/modules/handles.py

@@ -15,6 +15,7 @@
     AGENTCAT_TAG_AGENT_ID,
     AGENTCAT_TAG_AGENT_SOURCE,
     AGENTCAT_TAG_MRTR,
+    AGENTCAT_TAG_NESTED,
     AGENTCAT_TAG_PROTOCOL_VERSION,
     AGENTCAT_TAG_SESSION_SOURCE,
     MCP_INSTRUCTIONS_KEY,
@@ -304,6 +305,7 @@ def build_handle_tags(
     res: HandleResolution,
     protocol_version: str | None = None,
     mrtr: str | None = None,
+    nested: bool = False,
 ) -> dict[str, str]:
     tags: dict[str, str] = {AGENTCAT_TAG_SESSION_SOURCE: res.session_source}
     if res.agent_id and res.agent_source:
@@ -313,4 +315,6 @@ def build_handle_tags(
         tags[AGENTCAT_TAG_PROTOCOL_VERSION] = _clamp_tag_value(protocol_version)
     if mrtr:
         tags[AGENTCAT_TAG_MRTR] = mrtr
+    if nested:
+        tags[AGENTCAT_TAG_NESTED] = "true"
     return tags