forked from molecule-ai/molecule-core
203a4f0f91
DEFAULT_MCP_SERVER_PATH was hardcoded to /app/a2a_mcp_server.py, which was correct under the pre-#87 monolithic-template Docker layout where the workspace/ tree was COPY'd into /app/. After the universal-runtime refactor (#87, #117), workspace modules ship inside the molecule-ai-workspace-runtime wheel under site-packages/molecule_runtime/, while /app/ now holds only template-specific files (adapter.py + the runtime-native executor for that template). Net effect: in every workspace built since the wheel cutover, Claude Code SDK's mcp_servers={"a2a": {"command": python, "args": ["/app/a2a_mcp_server.py"]}} pointed at a missing file. The subprocess launch failed silently, the SDK registered zero MCP tools, and the agent's list_peers / delegate_task / a2a_send_message / a2a_send_signal all disappeared. Symptom observed today: Design Director said "I tried to reach the perf auditor via the inter-agent MCP tools (list_peers, delegate_task) but those tools didn't resolve in this environment" and fell back to running the audit itself with WebFetch. Why this slipped through E2E: the priority-runtimes harness sends a single message and verifies a reply — it does not exercise inter-agent delegation, so the missing MCP tools are invisible at that layer. Fix: resolve the path relative to executor_helpers.py via __file__, which tracks wherever the wheel is installed (site-packages today, anywhere else tomorrow). The A2A_MCP_SERVER_PATH env override is preserved for tests / non-default layouts. Regression test: assert os.path.exists(DEFAULT_MCP_SERVER_PATH) so any future move of a2a_mcp_server.py out of the package directory fails at unit-test time instead of silently disabling delegation in production. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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| .. | ||
| adapters | ||
| builtin_tools | ||
| lib | ||
| molecule_audit | ||
| plugins_registry | ||
| policies | ||
| scripts | ||
| skill_loader | ||
| tests | ||
| .coveragerc | ||
| a2a_cli.py | ||
| a2a_client.py | ||
| a2a_executor.py | ||
| a2a_mcp_server.py | ||
| a2a_tools.py | ||
| adapter_base.py | ||
| agent.py | ||
| agents_md.py | ||
| build-all.sh | ||
| config.py | ||
| consolidation.py | ||
| coordinator.py | ||
| Dockerfile | ||
| entrypoint.sh | ||
| events.py | ||
| executor_helpers.py | ||
| heartbeat.py | ||
| initial_prompt.py | ||
| main.py | ||
| molecule_ai_status.py | ||
| platform_auth.py | ||
| plugins.py | ||
| preflight.py | ||
| prompt.py | ||
| pytest.ini | ||
| rebuild-runtime-images.sh | ||
| requirements.txt | ||
| runtime_wedge.py | ||
| shared_runtime.py | ||
| transcript_auth.py | ||
| watcher.py | ||