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Every provider profile is now a self-contained plugin under plugins/model-providers/<name>/, mirroring the plugins/platforms/ pattern established for IRC and Teams. The ProviderProfile ABC stays in providers/; the per-provider profile data moves out. - plugins/model-providers/<name>/__init__.py calls register_provider() - plugins/model-providers/<name>/plugin.yaml declares kind: model-provider - providers/__init__.py._discover_providers() lazily scans bundled plugins then $HERMES_HOME/plugins/model-providers/<name>/ (user override path) - User plugins with the same name override bundled ones (last-writer-wins in register_provider) - Legacy providers/<name>.py layout still supported for back-compat with out-of-tree editable installs - Hermes PluginManager: new kind=model-provider; skipped like memory plugins (providers/ discovery owns them); standalone plugins with register_provider+ProviderProfile in their __init__.py auto-coerce to this kind (same heuristic as memory providers) - skip_names extended to include 'model-providers' so the general PluginManager doesn't double-scan the category - 4 new tests in tests/providers/test_plugin_discovery.py covering bundled discovery, user override, and general-loader isolation - Docs updated: website/docs/developer-guide/adding-providers.md, provider-runtime.md, providers/README.md, plugins/model-providers/README.md No API break: auth.py / config.py / doctor.py / models.py / runtime_provider.py / model_metadata.py / auxiliary_client.py / chat_completions.py / run_agent.py all still consume providers via get_provider_profile() / list_providers() — they just now see plugin-discovered entries instead of pkgutil-iterated ones. Third parties can now drop a single directory into ~/.hermes/plugins/model-providers/<name>/ to add or override an inference provider without touching the repo.
70 lines
2.3 KiB
Markdown
70 lines
2.3 KiB
Markdown
# Model Provider Plugins
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Each subdirectory is a self-contained provider profile plugin. The
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directory layout mirrors `plugins/platforms/`:
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```
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plugins/model-providers/
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├── openrouter/
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│ ├── __init__.py # registers the ProviderProfile
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│ └── plugin.yaml # manifest: name, kind, version, description
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├── anthropic/
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│ ├── __init__.py
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│ └── plugin.yaml
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└── ...
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```
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## How discovery works
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`providers/__init__.py._discover_providers()` scans this directory (and
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`$HERMES_HOME/plugins/model-providers/`) the first time anything calls
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`get_provider_profile()` or `list_providers()`. Each `__init__.py` is
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imported and expected to call `providers.register_provider(profile)`.
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User plugins at `$HERMES_HOME/plugins/model-providers/<name>/` override
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bundled plugins of the same name — last-writer-wins in
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`register_provider()`. Drop a file there to replace a built-in.
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## Adding a new provider
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1. Create `plugins/model-providers/<your_provider>/__init__.py`:
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```python
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from providers import register_provider
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from providers.base import ProviderProfile
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my_provider = ProviderProfile(
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name="your-provider",
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aliases=("alias1", "alias2"),
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display_name="Your Provider",
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description="One-line description shown in the setup picker",
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signup_url="https://your-provider.example.com/keys",
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env_vars=("YOUR_PROVIDER_API_KEY", "YOUR_PROVIDER_BASE_URL"),
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base_url="https://api.your-provider.example.com/v1",
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default_aux_model="your-cheap-model",
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)
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register_provider(my_provider)
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```
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2. Create `plugins/model-providers/<your_provider>/plugin.yaml`:
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```yaml
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name: your-provider-profile
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kind: model-provider
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version: 1.0.0
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description: Short sentence about the provider
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author: Your Name
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```
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Nothing else needs to change. `auth.py`, `config.py`, `models.py`,
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`doctor.py`, `model_metadata.py`, `runtime_provider.py`, and the
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chat_completions transport all auto-wire from the registry.
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## Non-trivial profiles
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Override the `ProviderProfile` hooks in a subclass for per-provider
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quirks — see `plugins/model-providers/openrouter/__init__.py` for
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`build_extra_body` and `build_api_kwargs_extras` examples, and
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`plugins/model-providers/gemini/__init__.py` for `thinking_config`
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translation.
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