Symptom: a model-provider plugin installed with `hermes plugins install`
(e.g. claude-subscription-directsdk) worked from a terminal but the Desktop
app failed every session build with "Unknown provider '<name>'".
Cause: `providers/__init__.py` scanned `$HERMES_HOME/plugins` exactly once
per process, under whichever profile home happened to be bound at the first
lookup, and the registry was global. The Desktop backend and the multiplex
gateway serve several profiles from one process, so any profile other than
the first-discovered one never saw its own plugins, and a plugin installed
while the process ran was invisible until a restart.
Change: bundled, pip and legacy providers stay process-wide; `$HERMES_HOME`
plugins load into a per-home layer keyed by `hermes_home_key()` at lookup
time (`get_provider_profile`, `list_providers`, `provider_source`). The
layer rescans when the plugin directories' mtimes change, so a fresh install
is found on the next lookup. The registration target is a ContextVar so two
turn threads scanning two homes cannot cross-register, and no lock is held
across plugin imports (a lock there could deadlock against a thread
mid-`import hermes_cli.auth`). Per-home module names let two profiles carry
the same plugin. `plugin_dev` reuses the module-name helper.
Live repro (tui_gateway `session.create` on a secondary profile whose config
selects a plugin installed only there): base -> agent_error "Unknown
provider 'fakeprov-b'"; fixed -> provider resolves and the build proceeds to
the plugin's own runtime check.
An unset agent.reasoning_effort already resolves to medium on the Nous Portal,
OpenRouter, AI Gateway and Copilot routes (each profile fills it in
build_api_kwargs_extras). The custom / OpenAI-compatible profile — every
`providers.<name>` block and `--provider custom` — omitted the field instead,
so the endpoint's own default applied; for moonshotai/kimi-k3 that is `max`:
3x the reasoning tokens and ~3x the latency of medium, measured live.
The default is resolved at request time in _reasoning_config_for_wire via
ProviderProfile.default_reasoning_config (the custom profile answers medium),
so it is recorded as what actually went out and the reasoning-rejection
ladder keeps working: a 400 on the field turns the rest of the session back
to "omit". It never touches an explicit effort (low stays low, none stays
none), stays off non chat-completions transports (the Anthropic adapter's
unset = no thinking kwargs stands), off models the catalog or model_overrides
mark supports_reasoning: false, and off local Ollama models pulled without
the thinking capability. Auxiliary calls are untouched: they hand the profile
reasoning_config=None directly, which still omits the field.
Live wire capture (token-injecting proxy, providers.probe -> kimi-k3):
before req_reasoning: {}
after req_reasoning: {'reasoning_effort': 'medium'}
agent.reasoning_effort: low -> {'reasoning_effort': 'low'} (unchanged)
The provider-agnostic half of PR #105863, so a CLI-driven subscription provider can ship as a
standalone `kind: model-provider` plugin instead of a bundled one:
- ProviderProfile: `native_reasoning_details_type`, `model_aliases`, `get_model_context_length`,
`get_usage_cost`, `setup_status`, `discover_models` hooks (all default None / no-op).
- Chat Completions transport: provider-native `reasoning_details` carriers follow only their
declaring profile; standard records still replay on OpenRouter-style routes, strict routes
drop the field wholesale (#70233). Relay/stream accumulate `delta.reasoning_details` verbatim.
- `hermes model`: the generic plugin flow gates an external-process row on the CLI's own login
status (inline `login_command` on a TTY), offers `discover_models()` rows with per-row notes,
and never writes config when the executable is missing.
- `/model` and the pickers: process providers list their live catalog merged with the pinned
one, declared aliases/ids resolve inside the provider, and validation accepts a listed id
without probing `process://`.
- Delegation keeps the selected external-process provider and protocol for the child.
- Model metadata / usage pricing consult the profile's bound and cost hooks first.
- Desktop: `[1m]` renders as a "1M" tag and hyphenated Anthropic versions read "Haiku 4.5".
The bespoke `_model_flow_external_process` and hard-coded `hermes_cli/main.py` paths from the
PR were dropped in favour of main's `_model_flow_plugin_provider`.
Co-authored-by: unsupportedpastels <unsupportedpastels@users.noreply.github.com>
A `$HERMES_HOME/plugins/model-providers/<name>/` plugin re-registering a
bundled provider (stepfun with a regional base_url, gmi at a staging host)
wins in `providers._REGISTRY` — register_provider() is last-writer-wins and
the plugin guide promises exactly this — but the runtime reads its endpoint
from `hermes_cli.auth.PROVIDER_REGISTRY`, whose mirror loop skipped every
name already present, so inference kept going to the built-in URL (#48450).
The mirror now applies one explicit precedence rule: when a row core wrote
(built-in or plugin-mirrored) belongs to a name whose profile
currently registered came from a USER plugin,
the row's profile-derived fields are rewritten in place (inference_base_url;
api_key_env_vars / base_url_env_var on api-key rows when the profile declares
env_vars). `providers` records the discovery source per registration
(`provider_source()`), because a bundled profile must never rewrite a
built-in row: several bundled profiles omit the row's `*_BASE_URL` env var
and one differs in auth_type, so an unconditional "profile wins" would have
changed built-in behaviour. With no user plugin PROVIDER_REGISTRY is
byte-identical before/after (78 rows probed). copilot/kimi/zai keep their
bespoke resolution via the existing skip set.
Co-authored-by: xiaoxinova <xiaoxinova@users.noreply.github.com>
A kind: model-provider plugin is loaded by providers/ discovery and never enters the
PluginManager hook lifecycle, so transform_api_error_classification was unreachable for it
without shipping a second plugin component. The profile now carries an optional
classify_api_error(error, *, status_code, error_code, message, body, model) callable,
consulted as a classifier stage right after the generic plugin hooks and only for the
provider that produced the error. None or an unknown reason leaves the built-in verdict;
built-in providers are untouched (no name table, no lifecycle change).
Also: a plugin refresh_credential returning None/empty was treated as a successful refresh
(row marked ok, stale bearer replayed up to the refresh cap). It now benches the row like a
failed refresh POST, so the loop rotates or falls to the generic sign-in copy.
Part of #116408
(cherry picked from commit b8129fd6fd6a0cf4eeee6d95a5d5d823668a306d)
Model provider plugins can now declare per-model metadata (capability
booleans, context_window, model_family) through the existing
ProviderProfile registry using the canonical model_overrides schema.
Declarations patch catalog metadata without erasing unknown fields; on a
catalog miss, undeclared capability booleans stay unknown rather than
false.
Precedence (tested): explicit user model_overrides > plugin declarations
> catalog/builtin > _default fill-gap. lookup_models_dev_context shares
the same seam so auto-detected context reflects declarations, including
the dashboard /api/model/info response.
Provider aliases resolve declarations; user override lookup keeps its
existing provider-key rules. Metadata lookup may trigger the existing
lazy provider discovery (imports plugin code); the registry is
process-global and discovered once per process.
Progress on #102115.
(cherry picked from commit a2bf725597efddf5238a8d0447705cf31ac71cc8)
First in-tree consumer of ProviderProfile.fetch_account_usage: the OpenCode Go plan's rolling /
weekly / monthly windows (GET /zen/go/v1/usage) render in every /usage surface without adding the
provider name to the core _USAGE_FETCHERS table. Ported from #113418, which implemented the same
fetch as a core table entry; the literal endpoint (not the runtime base_url, which loses /v1 in
anthropic_messages mode) and the window mapping are theirs.
Co-authored-by: Angello Picasso <angello.picasso@devsu.com>
An out-of-tree ProviderProfile with auth_type oauth_device_code/oauth_external loaded and inferred
but was invisible to hermes auth: _register_plugin_provider skipped every auth_type except
external_process and api_key, so resolve_provider() said "Unknown provider", `hermes auth add`
had nothing to dispatch to, the pool could not refresh its rows (REFRESHABLE_OAUTH_PROVIDERS is a
name set) and PooledCredential.from_dict dropped every extra key outside _EXTRA_KEYS on reload.
- hermes_cli/auth_plugin_providers.py (new sibling; auth.py is at the size cap): the registry
mirror now registers every profile under the auth_type it declares, re-syncs after discovery /
on a miss (salvaged from #101768), and owns the seam lookups: auth_handler dispatch, the
fail-loud error for a non-api-key profile that ships no handler, and refresh eligibility
derived from the profile's refresh_credential hook (never a name set).
- providers/base.py: ProviderProfile.auth_handler(action, args) (salvaged from #111610, sync only)
and refresh_credential(entry) -> rotated fields. A separate hook rather than
auth_handler("refresh", ...) because the pool holds a credential row, not an argparse namespace,
and needs tokens back rather than a bool.
- hermes_cli/auth_commands.py: add/status/logout/refresh (incl. interactive add) consult the
plugin handler before the built-in path; `auth refresh` admits plugin rows via the predicate.
- agent/credential_pool.py: _refresh_entry_impl calls the profile hook; from_dict keeps every
non-field key in extra so plugin metadata survives load -> save -> load (to_dict already wrote
it all; sanitize_borrowed_credential_payload semantics unchanged).
- hermes_cli/auth.py: config import moved below PROVIDER_REGISTRY (salvaged from #94231) so a
plugin imported during discovery never sees a partial auth module.
Built-in providers are untouched: only custom/openrouter were unregistered profiles before and
both stay in the skip list; anthropic/nous/openai-codex auth add/status/refresh output is
byte-identical in the before/after probe.
Part of #116408. Salvages #111610 (@Finn763), #101768 (@zihaofeng2001, absorbing #106361 by
@Finn763) and #94231 (@Kyzcreig).
Co-authored-by: finn763 <165816600+finn763@users.noreply.github.com>
Co-authored-by: zihaofeng2001 <zihaofeng2001@gmail.com>
Co-authored-by: Kyzcreig <9063726+Kyzcreig@users.noreply.github.com>
hermes_cli.auth mirrors provider-plugin profiles into PROVIDER_REGISTRY
once, at import time, by iterating list_providers(). providers'
_discover_providers() sets its _discovered guard before importing the
plugin directories, so when a plugin's own imports pull hermes_cli.auth in
mid-discovery (e.g. a user plugin importing agent.credential_pool), the
import-time mirror sees a partial profile list and every plugin discovered
afterwards is dropped from the auth registry. resolve_provider() then
rejects those providers with "Unknown provider" even though
get_provider_profile() and resolve_provider_full() know them.
- auth.py: factor the mirror into idempotent sync_plugin_provider_registry()
(returns the number of newly mirrored profiles) and re-sync on a miss via
_registry_lookup() at the resolve_provider() gate, is_known_auth_provider(),
the get_auth_status() dispatch and the credential/status resolvers.
- providers/__init__.py: call back into hermes_cli.auth (through
sys.modules, never importing it, never raising) when discovery finishes
and on any post-discovery register_provider(), so direct
PROVIDER_REGISTRY readers stay correct too. Registrations *during*
discovery are deliberately not mirrored one by one.
- tests: subprocess end-to-end regression (sorted-first plugin imports
hermes_cli.auth, sorted-last plain plugin must still resolve) plus
in-process contract tests: partial snapshot reconciled at discovery end,
post-discovery registration mirrored, sync idempotent / never clobbers,
providers-side hook never imports hermes_cli.auth. All red on main.
Fixes#102123. Absorbs the in-process tests and never-raise hook shape
from #106361 (Finn763). Related: #21685, #69576, #94231.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AwbHcHDBh9vFRHSDj2W2FY
A `kind: model-provider` plugin can register a ProviderProfile and a custom
client but could not contribute an interactive login flow: its module is
imported by provider discovery, and the generic command-plugin loader skips
model-provider manifests on purpose, so `register(ctx)` is not a supported way
to add commands. The core login implementations are also provider-name keyed, so
a standards-based device-code provider had to ship a second standalone command
plugin just for login/status/logout.
Add an optional ProviderProfile.auth_handler(action, args) seam and consult it
first from the existing `hermes auth` actions (add/status/logout/refresh) —
before the known-provider gate and before the credential pool:
- truthy return = the provider owned the action; falsy = per-action fallback.
- sync or async handlers (a returned awaitable is awaited).
- a handler exception becomes a readable SystemExit naming provider + action.
- no handler at all = byte-for-byte unchanged built-in behavior, including the
existing "Unknown provider" exit.
- a registered profile that does not handle the requested action now says so
instead of reporting its provider as unknown.
No new top-level command, no manifest surface; credentials stay provider-owned.
Tests: tests/hermes_cli/test_provider_auth_seam.py drives the real `hermes auth`
parser with a fixture model-provider plugin — dispatch + argument pass-through
for all four actions, per-action fallback, async handler, handler failure,
registry lookup failure, duplicate registration (last-writer-wins), and an
untouched built-in provider. Docs gain the new hook under the model-provider
plugin guide.
Two open atoms of #83390 (DeepSeek "This response_format type is unavailable now"):
* `_call_fallback_candidate_sync/_async` only special-cased auth errors, so when the primary
aux provider failed (timeout, rate limit, payment) and the fallback landed on a provider that
rejects `json_schema`, the 400 re-raised and the whole task died — the primary-path rung from
#89589 never applied there. Both fallback paths now retry once without `response_format`.
* Every structured aux call (titles, kanban decomposer, goal judge, plugin structured calls)
paid a guaranteed-fail request on providers that lack `json_schema` before the retry. A
provider profile can now declare `unsupported_response_formats` (DeepSeek: json_schema, per
https://api-docs.deepseek.com/guides/json_mode) and the recovery ladder remembers any route
that rejected a type once (host:port scoped), so `_build_call_kwargs` — shared by the primary
and fallback paths — omits the field before the first request. Dropping rather than
downgrading to json_object matches the end state the retry already produced; json_object
needs a JSON-mentioning prompt and some relays return empty content under it.
New logic lives in agent/auxiliary_structured_output.py; the facade only gains the fallback rung
next to the predicate it uses. tests/agent/conftest.py resets the process-level memo per test.
Fixes#83390, #105191. Closes duplicates #84976, #88830, #102849, #113064.
Co-authored-by: Legion-is-life <Legion-is-life@users.noreply.github.com>
The hand-rolled `_AGGREGATOR_MODEL_PREFIX_PROVIDERS = {"openrouter"}` duplicated
aggregator knowledge already owned by hermes_cli.providers.is_routing_aggregator,
so other vendor-prefixed aggregators (ai-gateway, kilocode, custom:* proxies)
kept bypassing the target-profile veto. Use the existing predicate instead of a
second frozenset.
Review finding: aggregator allowlist duplicated is_routing_aggregator and missed other vendor-prefixed aggregators.
vertex, bedrock and copilot-acp each overrode ProviderProfile.fetch_models with an identical `return None`, and the overrides could not simply be deleted because the base implementation derives a URL from base_url and would GET e.g. bedrock-runtime.../models or acp://copilot/models. ProviderProfile now carries `supports_model_listing` (default True); the base fetch_models returns None before touching the network when it is False, and the three SDK/subprocess-backed profiles set it in their constructors instead of overriding. Separately, two catalog GETs still went through bare urllib.request.urlopen: commandcode's fetch_models and hermes_cli.models._fetch_ai_gateway_models (which sends the AI Gateway bearer). Both now use the redirect-safe open_credentialed_url path (_urlopen_model_catalog_request in models.py, also applied to the unauthenticated fetch_ai_gateway_models for consistency). This is a security behavior change: a cross-origin redirect from either endpoint no longer forwards the Authorization/attribution headers to the redirect target. The AI Gateway tests that patched the global urlopen are repointed at hermes_cli.models._urlopen_model_catalog_request (the seam tests/hermes_cli/test_models.py already uses), the commandcode test patches open_credentialed_url on the plugin module, and two invariant tests pin the no-network guard and the bearer routing.
Apply the narrow registry fallback proposed in PR #68458 without unrelated case normalization or dead legacy flags. Preserve dedicated named profiles before using CustomProfile. This corrects existing reasoning loss only; per-model dialect configuration remains a product decision.
Co-authored-by: saotu <160758706+saotu@users.noreply.github.com>
Every PLUGIN-COMPAT __getattr__ now calls hermes_cli.plugin_compat.warn_once(facade, name, target) before
resolving, emitting a HermesPluginCompatWarning (FutureWarning) once per process per name: old path, new
path, removal target. Importing a facade for its live API stays silent; only resolving a moved name warns.
COMPAT_MANIFEST.md documents the warning and how to silence it during migration.
Verified the runtime never routes through a pointer: every entry point (run_agent, cli, hermes_cli.main,
gateway.run, tui_gateway.server, web_server, model_tools + tool discovery, hermes_state, cron.scheduler,
browser_tool, mcp_tool, kanban, auth) imports clean and `hermes doctor` runs end to end with the warning
promoted to an error.
Also restores the check_compat_pointers CI step to .github/workflows/lint.yml, which a0be177aac dropped
when the compat layer was regenerated (the lint script itself was present; the workflow step was not).
hermes_cli/plugin_compat.py, tests/test_plugin_compat_warning.py and the two-line insert per facade are
part of the compat layer and go away with it.
The Sep 2026 decomposition (PR #102117) makes internal import paths a non-API: names now live in
the focused modules that define them. This commit is the ONLY thing keeping the old paths alive,
so external plugins have time to update. It is deliberately a single, unsquashed commit:
git revert <this sha>
removes every shim, stub and manifest at once on the announced date. Nothing in-tree may depend on
these pointers: scripts/check_compat_pointers.py (wired into lint.yml) fails CI if it does.
What it adds (see COMPAT_MANIFEST.md, compat_manifest.json):
- 332 facade modules get one delimited `PLUGIN-COMPAT` block appended at the end of the file
- 1,172 moved names resolved lazily via a module `__getattr__` (PEP 562) — never a top-level import,
so no import cycles; facades that already had `__getattr__` get a chained one
- 592 third-party/stdlib names the old modules used to expose, with their original import statements
- 266 public definitions that had been deleted as unused, restored byte-for-byte from the pre-decomposition
tree (+40 private helpers and 16 imports pulled in only because a restored definition needs them)
- 3 deleted modules recreated as re-export stubs (gateway/startup_watchdog, hermes_cli/observability/
relay_runtime, tools/environments/modal_utils)
- private names (`_x`) get no pointer: they were never API (3,792 skipped)
Verified: all 335 touched modules import under a fresh HERMES_HOME and every manifest name resolves;
the lint reports zero in-tree uses; ruff clean; targeted suites unchanged.
run_agent.py: delete the `# noqa: F401` re-export block (agent.process_bootstrap
OpenAI/_SafeWriter/_get_proxy_*, model_tools get_tool_definitions/
handle_function_call/check_toolset_requirements, FailoverReason,
_qwen_portal_headers/_routermint_headers, session_persistence names,
estimate_request_tokens_rough, ContextCompressor + friends, jittered_backoff,
prompt_builder names, message_sanitization names, tool_dispatch_helpers
names) — 41 names run_agent never used itself — and the `_STREAM_DIAG_HEADERS`
back-compat class alias (no in-tree reader). run_agent now imports only what
it uses (get_toolset_for_tool, is_local_endpoint, coalesce/uniquify tool-call
ids, cleanup_vm/get_active_env from terminal_tool_lifecycle).
agent/*: `_ra().X` late-binds that only reached a re-export now import the
defining module directly (agent_runtime_helpers -> process_bootstrap.OpenAI,
model_tools.handle_function_call, session_persistence._safe_session_filename_component;
agent_init -> model_tools.get_tool_definitions/check_toolset_requirements,
_lazy_headers("agent.client_lifecycle", ...) for qwen/routermint;
system_prompt -> agent.prompt_builder / model_tools directly, dropping its
own _ra() shim and the `_r` parameter threading). `_ra()` stays for
run_agent-resident names (logger, AIAgent, _hermes_home, _set_interrupt, ...).
toolsets.py: remove resolve_multiple_toolsets (shim-only, restored by
34abf954bd); tests/test_toolsets.py pins the same union behavior via
resolve_toolset over each name.
providers/__init__.py: drop the OMIT_TEMPERATURE re-export (no callers via the
package); ProviderProfile stays because __init__ uses it for annotations —
2 tests repointed to providers.base.
agent/iteration_budget.py: drop the "run_agent re-exports the class"
docstring pointer; 4 tests import IterationBudget from its home.
model_tools.py (arg_coercion names), agent/tool_executor.py, and
hermes_cli/cli_session_mixin.py repoints landed via a sibling commit on this
shared worktree.
Callers repointed: gateway/run.py, hermes_cli/cli_chat_turn_mixin.py,
hermes_cli/cli_tui_mixin.py, tui_gateway/session_workdir.py,
agent/transports/codex.py (one-line imports) + comment pointers in
tools/file_state.py, tools/schema_sanitizer.py, scripts/tool_search_livetest.py.
Tests: patch("run_agent.X") / monkeypatch.setattr(run_agent, "X") /
`from run_agent import X` -> defining module across 99 test files.
`hermes plugins install owner/repo` — and the plugin index behind
`hermes plugins search` — clones into `$HERMES_HOME/plugins/<name>/`, flat, one
directory per plugin. Provider discovery only ever scanned
`$HERMES_HOME/plugins/model-providers/<name>/`.
Nothing joined the two. `PluginManager` does not close the gap either: it
classifies `kind: model-provider` and deliberately skips importing it, because
provider lifecycle is owned by `providers/__init__.py` — which was not looking
in the directory the installer writes to.
So the documented install path half-worked. The CLI reported success, wrote its
install metadata, and the provider silently did not exist: `hermes -m <it>` said
"Unknown provider" and `/model` never listed it. Verified before the fix — a
plugin at `~/.hermes/plugins/<name>/` was NOT FOUND while the identical plugin
at `~/.hermes/plugins/model-providers/<name>/` was discovered.
Discovery now also walks the flat directory, importing only entries whose
manifest declares `kind: model-provider`. Everything else there belongs to
`PluginManager`, which owns its lifecycle and consent flow — importing it here
would run third-party code behind its back, so the tests assert we don't (with
fixtures that register on import, since a fixture that merely raised would be
swallowed by `_import_plugin_dir` and prove nothing).
Manifests are parsed with PyYAML when present and a line scan otherwise, so
provider discovery gains no hard dependency; an unreadable manifest is skipped
rather than allowed to blank the registry.
Co-Authored-By: Junie <junie@jetbrains.com>
An external-process provider is an agent CLI Hermes drives over stdio rather
than an HTTP endpoint. Three things about it were spelled out for one vendor,
and each was a hard stop for any other:
* ``resolve_provider()`` gates on ``PROVIDER_REGISTRY``. Its auto-extend from
``providers/`` covered api-key providers only, so an external-process profile
never entered it and ``hermes -m <that provider>`` died with "Unknown
provider" before a client was ever built.
* ``resolve_runtime_provider()`` keyed the external-process branch on the
literal ``"copilot-acp"``, so anything else silently fell through to the
OpenRouter default instead of its own runtime.
* ``resolve_external_process_provider_credentials()`` hardcoded the binary
(``copilot``), the argv (``--acp --stdio``), the env var names and the
placeholder api_key — so a third-party provider would have been handed
another vendor's CLI.
Now the profile carries what only the provider knows — ``process_command``,
``process_args``, ``process_command_env_vars``, ``process_args_env_var`` — and
the three core paths key on ``auth_type == "external_process"`` instead of a
name. copilot-acp's values move into its profile verbatim, so
``HERMES_COPILOT_ACP_COMMAND`` / ``COPILOT_CLI_PATH`` /
``HERMES_COPILOT_ACP_ARGS`` and its ``copilot-acp`` api_key placeholder behave
exactly as before; the new tests assert that alongside the out-of-tree case at
every step.
The error for a missing binary now names the provider and its own env override
instead of telling every user to install GitHub Copilot CLI.
Co-Authored-By: Junie <junie@jetbrains.com>
``create_openai_client`` was a hardcoded if-ladder: copilot-acp builds an ACP
stdio shim, gemini builds a native client, everything else gets an
``openai.OpenAI``. There was no extension point, so a provider whose wire
protocol is not OpenAI-over-HTTP could only be added by editing this function —
which is exactly why an ACP provider cannot ship outside this tree today, even
though ``providers/__init__.py`` has discovered out-of-tree profiles from
``~/.hermes/plugins/model-providers/`` and pip entry points for a while.
``ProviderProfile.create_client(**client_kwargs)`` closes that gap. It returns
``None`` by default, so every provider that wants the standard client is
unaffected and the existing ladder still runs as the fallback. copilot-acp is
migrated onto it — its hardcoded branch is gone and its profile supplies the
client in three lines, which is the same three lines an external package writes.
Resolution goes by provider name first, then by ``base_url`` prefix, so a
runtime configured only by URL still reaches its profile — matching what the
replaced ``startswith("acp://copilot")`` branch did. A profile that raises is
logged and skipped: a third-party plugin can fail to provide a client, but it
cannot take the turn down.
Also replaces the two ``isinstance`` checks in ``agent/auxiliary_client.py``
that mean "this client is complete, do not wrap it" with capability flags the
client class declares — ``HERMES_SKIP_TRANSPORT_WRAP`` and
``HERMES_SKIP_ASYNC_WRAP``, mirroring ``SUPPORTS_HERMES_TOOL_CALLS`` in
``background_review.py``. Two in-tree consumers (the ACP shim and the Gemini
native client), an out-of-tree client is covered by the same declaration, and
the hot path no longer imports those modules just to type-test.
Co-Authored-By: Junie <junie@jetbrains.com>
Ramp Router is an OpenAI Responses-compatible LLM gateway at
https://api.router.com/v1 that routes each request across upstream
providers (OpenAI, Anthropic, xAI, Fireworks, ...) with server-side
fallbacks and spend controls. Nous asked for a PR adding it as a
provider, so:
- plugins/model-providers/router/: RouterProfile plugin —
api_mode=codex_responses, RAMP_ROUTER_API_KEY auth,
RAMP_ROUTER_BASE_URL override, live account-scoped catalog via
GET /v1/models (no hardcoded fallback_models: IDs are key-scoped and
Router's docs mandate runtime catalog reads).
- hermes_cli/providers.host_mandated_api_mode +
runtime_provider._detect_api_mode_for_url: api.router.com ->
codex_responses. The host is Responses-only — POST /v1/chat/completions
does not exist and 404s — so this is a genuine host mandate (exact
hostname match per #32243, mirroring the api.meta.ai precedent).
- providers/base.py: new overrideable supported_reasoning_efforts(model)
hook (tri-state: None=defer, ()=model takes no reasoning params,
tuple=clamp set). Router validates reasoning.effort per model and
returns HTTP 400 invalid-argument on levels outside the model's
published vocabulary, and 400 unsupported_parameter when a
non-reasoning model receives any reasoning field (both verified live).
The profile answers from a cached copy of the catalog's
router.capabilities.reasoning block: cache-only on the hot path,
seeded for free by fetch_models(), disk-mirrored across processes
(/cache/router_catalog.json), background-warmed when cold
— same design as the OpenRouter reasoning-caps clamp on the chat path.
- agent/transports/codex.py: consult the profile-declared vocabulary in
the generic effort-clamp branch (xai/actual/github branches untouched;
profiles that do not override the hook see no behavior change).
- cli-config.yaml.example + adding-providers.md + providers/README.md:
document the provider, the host mandate, and the new hook.
- tests: behavior contracts for the host mandate/URL detection/spoof
rejection, profile registration + auth auto-registry wiring, catalog
parsing, and transport clamp/suppression/fallback paths.
Verified live against api.router.com (Aug 2026): one-shot chat,
streaming SSE, tool calls + parallel_tool_calls, encrypted-reasoning
replay on OpenAI-served models, function_call_output follow-up turns on
OpenAI- and Fireworks-served models; store:false / prompt_cache_key /
include:[reasoning.encrypted_content] / reasoning.summary accepted
across backends; effort clamp confirmed to convert a would-be 400
(xhigh on o3) into a successful request via the disk mirror.
Follow-up to the salvaged CommandCode signature fix: accepting base_url
but ignoring it left custom endpoints (user-configured model.base_url /
COMMANDCODE_BASE_URL proxies) fetching the public catalog instead of the
configured one. Reviewer dansigma flagged this on PR #88851.
Class-wide fix, not a CommandCode patch:
- providers/base.py: a caller base_url that DIFFERS from the profile's
default now wins over models_url. Equality with the default means "not
customised" (callers pass base_url unconditionally, defaulting to the
profile's own URL) and keeps models_url as the endpoint, preserving the
OpenRouter-style split-catalog behavior.
- commandcode: _fetch_commandcode_models() takes the endpoint override;
both profile overrides forward base_url.
- Tests: base-class precedence (custom beats models_url, default does
not), CommandCode redirect via live local HTTP server incl. claude-*
filter, and default-echo hitting the canonical endpoint. All verified
to fail against the pre-fix implementation (sabotage run).
Follow-ups on salvaged #81419:
- Honor the plugins.enabled allow-list / plugins.disabled deny-list (same
opt-in contract as the general PluginManager) — installed != loaded.
- Skip callables that require arguments: general plugins share the
hermes_agent.plugins group with register(ctx) targets; invoking them
zero-arg would TypeError-spam every startup.
- Fix test docstring (entry points are discovered FIRST, lowest precedence)
and docs mechanism wording; document the config gate.
- New tests: opt-in gate, deny-list, register(ctx) never invoked.
E2E-verified with a real pip-built package against a temp HERMES_HOME.
Model-provider discovery was filesystem-only (bundled dir, $HERMES_HOME,
legacy providers/*.py). The general PluginManager scans the
hermes_agent.plugins entry-point group but deliberately does NOT import
kind=model-provider manifests (providers/ owns their lifecycle), so a
pip-installed provider was recorded yet never called register_provider() —
it never appeared in the picker, contradicting the 'Distribute via pip' docs.
Add a _discover_entry_point_providers() step that scans the
hermes_agent.plugins group and imports each entry, supporting both a
module:func callable target and a bare self-registering module target.
- Runs BEFORE filesystem plugins (lowest precedence): last-writer-wins means
bundled/$HERMES_HOME profiles always override a pip provider of the same
name, so a third-party package cannot hijack a first-party provider id.
- Per-entry failures are isolated (logged + skipped), so one broken package
can't break discovery.
- Docs updated to describe the real mechanism; tests cover callable + module
targets, failure isolation, and first-party precedence.
Titling ran on the user's main chat model, so a five-word title was billed
to a frontier reasoning model and inherited its latency. Pinning a cheap
model id instead just moves the problem: the hardcoded default was already
dead upstream and every call paid a 404 before the retry net caught it.
Match model FAMILIES against the provider's live /v1/models catalog,
preferring rolling '-latest' aliases where a provider publishes them, and
order the families by measured latency. Nothing to bump when a provider
ships a new mini/flash/haiku. Opt-in per task, so compression, vision, and
search keep 'auto means my chat model'.
Review feedback: a same-host redirect to a different port can land on a
different service, which must not inherit the provider API key. Compare
(scheme, hostname, effective port) — with 80/443 defaults — instead of
hostname alone, and add a two-server regression test for the
same-host/different-port case.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
fetch_models() sends Authorization: Bearer <api_key> plus any
default_headers (x-api-key etc.) via urllib.request.urlopen, and
urllib's redirect handler forwards every header when following a
3xx — including to a different host. A catalog endpoint (or a
compromised/misconfigured proxy in front of it) answering with a
redirect to another origin therefore received the provider API key.
Install an HTTPRedirectHandler that drops authorization, x-api-key,
api-key, x-goog-api-key and cookie when the redirect target hostname
differs from the original request, mirroring the pattern already used
in skills/creative/comfyui/scripts/_common.py. Same-host redirects
keep credentials so legitimate path-level redirects still work.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The /model interactive picker resolved a base_url from user credentials
but never passed it to ProviderProfile.fetch_models(), causing the
picker to always query the provider's hardcoded default endpoint
instead of the user's custom URL (e.g. a company litellm proxy).
- providers/base.py: add optional base_url parameter to fetch_models()
- hermes_cli/models.py: pass resolved base_url to fetch_models()
- Update all subclass overrides for signature compatibility
- Add 6 regression tests covering override, fallback, and integration
Xiaomi MiMo (and potentially other providers) support multimodal user
messages but reject list-type tool message content with 400 'text is not
set'. Previously this was handled reactively — the API call would fail,
images would be stripped, and the request retried, losing visual info.
Fix: add supports_vision_tool_messages field to ProviderProfile (default
True). Xiaomi sets it to False. _tool_result_content_for_active_model
now checks this field proactively and returns a text summary instead of
list content, avoiding the round-trip failure entirely.
_supports_media_in_tool_results() had a hardcoded provider allowlist
that missed custom providers and newer vision-capable providers like
xiaomi. Added ProviderProfile.supports_vision flag and made the
function check:
1. Registered provider profile (supports_vision flag)
2. Model capabilities from models.dev catalog (supports_vision)
3. Existing hardcoded allowlist (unchanged)
This fixes HTTP 400 "text is not set" errors when vision-capable
custom providers receive text-only tool results instead of
multipart image content.
Related: #25594
The opencode-go relay defaults max_tokens to 262144 when none is sent,
but Xiami mimo-v2.5-pro only supports 131072 completion tokens — every
request 400s with "max_tokens is too large: 262144" before the agent
can do anything.
Add a get_max_tokens(model) hook on ProviderProfile (default returns
default_max_tokens) so profiles fronting multiple upstreams can vary
the cap per-model. Wire chat_completions transport through the hook.
Override on OpenCodeGoProfile with mimo-v2.5-pro=131072.
Only mimo-v2.5-pro is capped — other opencode-go models (kimi, glm,
qwen, minimax, other mimo variants) unchanged.
Some catalog endpoints (OpenCode Zen, etc.) sit behind a WAF that
returns 403 for the default Python-urllib/<ver> User-Agent. The
generic profile-based live fetch in providers/base.py was silently
failing for any such provider — falling through to the static catalog
and missing newly-launched models.
Set a generic 'hermes-cli/<version>' UA on the catalog probe so every
api_key provider profile benefits. Verified live against opencode-zen:
before this change, profile.fetch_models() raised HTTP 403; after, it
returns 42 models including gpt-5.5, gpt-5.5-pro, kimi-k2.6, glm-5.1
and the *-free variants the static catalog doesn't list.
Also strip the now-stale comment in validate_requested_model() claiming
opencode-zen's /models returns 404 against the HTML marketing site —
the API endpoint at /zen/v1/models returns 200 with valid JSON.
Surfaced by #2651 (@aashizpoudel) — fixes the same user-facing gap
their PR targeted, applied at the right layer so all api_key provider
profiles get live catalogs through the same code path.
Co-authored-by: Aashish Poudel <mr.aashiz@gmail.com>
Xiaomi MiMo's /v1/models endpoint returns 401 even with a valid API key,
causing hermes doctor to falsely report 'invalid API key'.
Add a `supports_health_check` field to ProviderProfile (default True).
Providers whose /models endpoint doesn't support auth verification can
set it to False. The doctor's dynamic provider discovery now reads this
field instead of hardcoding True.
The xiaomi provider plugin sets supports_health_check=False.
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.
Introduces providers/ package — single source of truth for every
inference provider. Adding a simple api-key provider now requires one
providers/<name>.py file with zero edits anywhere else.
What this PR ships:
- providers/ package (ProviderProfile ABC + 33 profiles across 4 api_modes)
- ProviderProfile declarative fields: name, api_mode, aliases, display_name,
env_vars, base_url, models_url, auth_type, fallback_models, hostname,
default_headers, fixed_temperature, default_max_tokens, default_aux_model
- 4 overridable hooks: prepare_messages, build_extra_body,
build_api_kwargs_extras, fetch_models
- chat_completions.build_kwargs: profile path via _build_kwargs_from_profile,
legacy flag path retained for lmstudio/tencent-tokenhub (which have
session-aware reasoning probing that doesn't map cleanly to hooks yet)
- run_agent.py: profile path for all registered providers; legacy path
variable scoping fixed (all flags defined before branching)
- Auto-wires: auth.PROVIDER_REGISTRY, models.CANONICAL_PROVIDERS,
doctor health checks, config.OPTIONAL_ENV_VARS, model_metadata._URL_TO_PROVIDER
- GeminiProfile: thinking_config translation (native + openai-compat nested)
- New tests/providers/ (79 tests covering profile declarations, transport
parity, hook overrides, e2e kwargs assembly)
Deltas vs original PR (salvaged onto current main):
- Added profiles: alibaba-coding-plan, azure-foundry, minimax-oauth
(were added to main since original PR)
- Skipped profiles: lmstudio, tencent-tokenhub stay on legacy path (their
reasoning_effort probing has no clean hook equivalent yet)
- Removed lmstudio alias from custom profile (it's a separate provider now)
- Skipped openrouter/custom from PROVIDER_REGISTRY auto-extension
(resolve_provider special-cases them; adding breaks runtime resolution)
- runtime_provider: profile.api_mode only as fallback when URL detection
finds nothing (was breaking minimax /v1 override)
- Preserved main's legacy-path improvements: deepseek reasoning_content
preserve, gemini Gemma skip, OpenRouter response caching, Anthropic 1M
beta recovery, etc.
- Kept agent/copilot_acp_client.py in place (rejected PR's relocation —
main has 7 fixes landed since; relocation would revert them)
- _API_KEY_PROVIDER_AUX_MODELS alias kept for backward compat with existing
test imports
Co-authored-by: kshitijk4poor <82637225+kshitijk4poor@users.noreply.github.com>
Closes#14418
