forked from molecule-ai/molecule-core
3dd8df585e
Completes the Hermes adapter's native-SDK plan for the provider that gains
the most from leaving OpenAI-compat: Anthropic. OpenAI-compat works fine for
plain text turns on every provider (Phase 1 covered that with one code path
for all 15 providers), but Anthropic's Messages API has first-class tool use,
vision content blocks, and extended thinking that the OpenAI-compat shim
strips or mis-translates.
Rather than ship all native SDK paths in one PR (Anthropic + Gemini + future),
this lands Anthropic only (Phase 2a). Gemini is Phase 2b, shipping after a
production measurement window on Phase 2a.
## Design
Providers now dispatch by `auth_scheme` field. Phase 1 added the field but
every provider used `"openai"`. Phase 2 flips `anthropic` to `"anthropic"`
and wires a second inference path keyed on that:
- `HermesA2AExecutor._do_openai_compat(task_text)` — existing path, handles
14 of 15 providers (Nous Portal, OpenRouter, OpenAI, xAI, Gemini, Qwen,
GLM, Kimi, MiniMax, DeepSeek, Groq, Together, Fireworks, Mistral)
- `HermesA2AExecutor._do_anthropic_native(task_text)` — NEW, uses the
official `anthropic` Python SDK's `AsyncAnthropic().messages.create(...)`
- `HermesA2AExecutor._do_inference(task_text)` — dispatches by
`self.provider_cfg.auth_scheme`
Unknown schemes fall back to OpenAI-compat with a logged warning, so future
provider additions don't crash if a native SDK path ships late.
## Fail-loud on missing SDK
`_do_anthropic_native` raises a clear `RuntimeError` with install
instructions if the `anthropic` package is missing at runtime:
Hermes anthropic native path requires the `anthropic` package. Install
in the workspace image with `pip install anthropic>=0.39.0` or set
HERMES provider=openrouter to route Claude models through OpenRouter's
OpenAI-compat shim instead.
This is intentional: silent fallback would mask fidelity loss (tool_use
blocks become plain text, vision gets stripped). Loud failure is better.
`requirements.txt` adds `anthropic>=0.39.0` so the package is baked into
the workspace-template image build path. Operators building custom workspace
images without anthropic installed get the loud error.
## Back-compat
- `create_executor(hermes_api_key="x")` → still routes to Nous Portal
(`auth_scheme="openai"`), unchanged
- `HERMES_API_KEY` env var → still first in RESOLUTION_ORDER
- `OPENROUTER_API_KEY` env var → still second
- All 14 OpenAI-compat providers unchanged — they take the same code path
as before
- ONLY `anthropic` provider changes behavior: it now uses the native
Messages API instead of the `/v1/chat/completions` compat shim
## Constructor signature change
`HermesA2AExecutor.__init__` now takes `provider_cfg: ProviderConfig`
instead of separate `api_key + base_url + model`. The three fields are
derived from `provider_cfg` + an optional model override. This is a
breaking change for any external caller building an executor directly,
but the only documented public entry point is `create_executor()`, which
is updated in the same commit to pass the cfg through.
## Test coverage
`workspace-template/tests/test_hermes_phase2_dispatch.py` — 7 new tests:
1. `test_anthropic_entry_has_anthropic_scheme` — registry flip
2. `test_all_other_providers_still_openai_scheme` — regression guard
3. `test_dispatch_openai_scheme_calls_openai_compat` — happy path
4. `test_dispatch_anthropic_scheme_calls_anthropic_native` — happy path
5. `test_dispatch_unknown_scheme_falls_back_to_openai_compat` — forward compat
6. `test_anthropic_native_raises_clear_error_when_sdk_missing` — fail-loud
7. `test_create_executor_passes_provider_cfg` — constructor wiring
All pass locally (pytest tests/test_hermes_phase2_dispatch.py -v, 0.04s).
Phase 1 tests unchanged: `test_hermes_providers.py` 26/26 pass, no
regressions.
## What's NOT in this PR (Phase 2b)
- Gemini native `generateContent` path (`auth_scheme="gemini"`)
- Streaming support across both native paths (`astream_messages`, `streamGenerateContent`)
- Tool calling on the anthropic native path (the `tools` + `tool_use` blocks)
- Vision content blocks (image_url → anthropic image blocks)
- Extended thinking parameter passthrough
All scoped in `project_hermes_multi_provider.md`. Phase 2a is the minimum
viable native Anthropic dispatch — single-turn text in, text out, no tools.
## Related
- Phase 1 baseline (already in main): #208 — provider registry + OpenAI-compat path
- Queued memory: `project_hermes_multi_provider.md` — full phased plan
- Triggering directive: CEO 2026-04-15 — "once current works are cleared,
focus on supporting hermes agent"
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|---|---|---|
| .. | ||
| __init__.py | ||
| conftest.py | ||
| test_a2a_cli.py | ||
| test_a2a_client.py | ||
| test_a2a_executor.py | ||
| test_a2a_mcp_server.py | ||
| test_a2a_tools_impl.py | ||
| test_a2a_tools_module.py | ||
| test_adapters.py | ||
| test_agent_base_urls.py | ||
| test_agent.py | ||
| test_approval.py | ||
| test_audit.py | ||
| test_awareness_client_full.py | ||
| test_claude_sdk_executor.py | ||
| test_cli_executor.py | ||
| test_common_setup.py | ||
| test_compliance.py | ||
| test_config.py | ||
| test_consolidation.py | ||
| test_coordinator_parent.py | ||
| test_coordinator_routing.py | ||
| test_delegation.py | ||
| test_events.py | ||
| test_executor_helpers.py | ||
| test_first_party_plugins.py | ||
| test_governance.py | ||
| test_heartbeat.py | ||
| test_hermes_adapter.py | ||
| test_hermes_phase2_dispatch.py | ||
| test_hermes_providers.py | ||
| test_hermes_smoke.py | ||
| test_hitl.py | ||
| test_main_initial_prompt.py | ||
| test_mcp_memory.py | ||
| test_medo.py | ||
| test_memory.py | ||
| test_molecule_ai_status.py | ||
| test_namespaces.py | ||
| test_openclaw_adapter.py | ||
| test_platform_auth.py | ||
| test_plugins_builtins_drift.py | ||
| test_plugins_builtins.py | ||
| test_plugins_registry.py | ||
| test_plugins.py | ||
| test_preflight.py | ||
| test_prompt.py | ||
| test_qianfan_provider.py | ||
| test_routing_policy.py | ||
| test_sandbox.py | ||
| test_security_scan.py | ||
| test_shared_runtime.py | ||
| test_skills_loader.py | ||
| test_skills_watcher.py | ||
| test_telemetry.py | ||
| test_temporal_workflow.py | ||
| test_watcher.py | ||