Establishes workspace/platform_tools/registry.py as THE place tool
naming and docs live. Every consumer reads from it; nothing duplicates
the source. Closes the architectural gap behind the doc/tool drift
discussion 2026-04-28 — adding hundreds of future runtime SDK adapters
should not require touching tool names anywhere except the registry.
What the registry owns
ToolSpec dataclass with: name, short (one-line description), when_to_use
(multi-paragraph agent-facing usage guidance), input_schema (JSON Schema),
impl (the actual coroutine in a2a_tools.py), section ('a2a' | 'memory').
TOOLS list with 8 entries — delegate_task, delegate_task_async,
check_task_status, list_peers, get_workspace_info, send_message_to_user,
commit_memory, recall_memory.
What now reads from the registry
- workspace/a2a_mcp_server.py
The hardcoded TOOLS list (167 lines of hand-maintained dicts) is
gone. Replaced with a 6-line list comprehension over the registry.
MCP description = spec.short. inputSchema = spec.input_schema.
- workspace/executor_helpers.py
get_a2a_instructions(mcp=True) and get_hma_instructions() now
GENERATE the agent-facing system-prompt text from the registry.
Heading + per-tool bullet (spec.short) + per-tool when_to_use +
a section-specific footer. No more hand-maintained instruction
blocks that drift from reality.
- workspace/builtin_tools/delegation.py
Renamed delegate_to_workspace -> delegate_task_async to match
registry. check_delegation_status -> check_task_status. Added
sync delegate_task @tool wrapping a2a_tools.tool_delegate_task
(was missing for LangChain runtimes — CP review Issue 3).
- workspace/builtin_tools/memory.py
Renamed search_memory -> recall_memory to match registry.
- workspace/adapter_base.py, workspace/main.py
Bundle all 7 core tools (was 6) into all_tools / base_tools.
- workspace/coordinator.py, shared_runtime.py, policies/routing.py
Updated system-prompt-text references to use the registry names.
Structural alignment tests
workspace/tests/test_platform_tools.py — 9 tests pin every
registry-to-adapter mapping:
- registry names are unique
- a2a + memory partition is complete (no orphans)
- by_name lookup works
- MCP server registers exactly the registry's tool set
- MCP description equals registry.short for every tool
- MCP inputSchema equals registry.input_schema for every tool
- get_a2a_instructions text contains every a2a tool name
- get_hma_instructions text contains every memory tool name
- pre-rename names (delegate_to_workspace, search_memory,
check_delegation_status) cannot leak back
Adding a future tool means adding one ToolSpec; the test failure
list tells the author exactly which adapter to update.
Adapter pattern for future SDK support
When (e.g.) AutoGen or Pydantic AI gets adapters, the only work
needed for tool surfacing is "wrap registry.TOOLS in your SDK's
tool format." Names, descriptions, schemas, impl come from the
registry — adapter author writes zero strings.
Why this needed to ship now
PR #2237 (already in staging) injected MCP-world docs as the
default system-prompt content. Without the registry, those docs
said "delegate_task" while LangChain runtimes only had
"delegate_to_workspace" — workers see docs for tools that don't
exist (CP review Issue 1+3). PR #2239 was a tactical rename;
this PR is the structural fix that prevents the same class of
drift from recurring as new adapters ship.
PR #2239 was closed in favor of this — same renames, plus the
registry, plus structural tests. Single coherent change.
Tests: 1232 pass, 2 xfailed (pre-existing). 9 new in
test_platform_tools.py; 4 alignment tests in test_prompt.py from
#2237 still pass; original test_executor_helpers tests adapted to
the registry-driven world.
Refs: CP review Issues 1, 2, 3, 5; project memory
project_runtime_native_pluggable.md (platform owns A2A);
project memory feedback_doc_tool_alignment.md (this is the structural
fix for the tactical lesson).
The conftest mock only exposed `new_agent_text_message`, the pre-v1
name. After fixing a2a_executor.py to use the v1 name
`new_text_message`, the mock didn't satisfy the import → CI red.
Mock both names (aliased to the same lambda) so any in-flight test
that still references the old name keeps working until the next
sweep removes those references.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Phase 2 of the universal-runtime refactor (task #87). Now that the
claude-code template repo ships its own claude_sdk_executor.py
(template PR #13 merged + image rebuilt at 07:36 UTC) the
molecule-runtime no longer needs to ship the file.
Deletes:
- workspace/claude_sdk_executor.py (704 LOC)
- workspace/tests/test_claude_sdk_executor.py (~1.6K LOC)
Updates:
- workspace/runtime_wedge.py — drops the "Compatibility shim" docstring
section. The shim was time-bounded ("removed once #87 Phase 2 lands");
this is that PR.
- workspace/tests/test_runtime_wedge.py — drops the
TestClaudeSdkExecutorReExportShim test class (the shim doesn't
exist anymore so the identity assertions would fail at import).
- workspace/tests/conftest.py — drops the claude_agent_sdk stub.
Its only consumer was test_claude_sdk_executor.py which is gone;
no other test imports the SDK.
- workspace/cli_executor.py — comment refresh: claude-code template
repo (not workspace/) is now the home for ClaudeSDKExecutor.
Verified-safe-to-delete:
- heartbeat.py: migrated to runtime_wedge in PR #2154 (no longer
imports from claude_sdk_executor)
- cli_executor.py: only comments referenced claude_sdk_executor;
its line-117 ValueError defends against accidental routing
- tests: only test_claude_sdk_executor.py + test_runtime_wedge.py's
shim class consumed the deleted module; both removed in this PR
Verification:
- 1182/1182 workspace pytest pass (was 1251; -69 = exactly the
deleted test cases — zero unexpected regressions)
- No live import of claude_sdk_executor anywhere in molecule-core
after deletion (grep verified)
Closes#87 for the claude-code adapter. Hermes is already template-only.
The remaining adapter-specific code in workspace/ is cli_executor.py
(codex/ollama/gemini-cli) tracked by task #122. preflight.py's
SUPPORTED_RUNTIMES static list is tracked by task #123 (PR #2155 in
flight).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- ci.yml: replace if/else BASE assignment with GITHUB_BASE_REF default
+ pull_request base.sha override pattern. Prevents push events from
overwriting the correct PR base SHA when both events fire together.
- conftest.py: catch RuntimeError in addition to ImportError when
importing coordinator.py, which raises RuntimeError at import time
when WORKSPACE_ID is not set (before the ImportError guard).
Co-authored-by: Molecule AI Release Manager <release-manager@agents.moleculesai.app>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
