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>
Run models locally as a first-class provider. The CLI grows a managed
llama.cpp runtime (engine install, model download, server supervision);
the desktop app grows the full setup and management story on top of it.
GUI surfaces ship behind the desktop --local launch flag (hermes desktop
--local, or the flag on the packaged app); backend routes and the CLI
are always live.
Runtime (hermes_cli/local_runtime/):
- curated GGUF catalog with per-machine variant selection: hardware
probe (VRAM/RAM/UMA), fit planning with spill accounting, quant choice
by context window
- derived recommendation: quality-ranked picks gated by a predicted
decode-speed floor, bandwidth-aware on unified memory; the decision
table is pinned as a test (pick AND reason per memory class), and the
Recommended badge explains its pick in a tooltip fed by the resolver's
actual branch
- engine install + model download with resumable split parts, cumulative
plan-level progress, and staged-model integrity (a split GGUF counts
only when every part is present)
- server supervision: spawn/adopt/stop, router mode with per-model load
progress relayed over SSE, abandoned-request cleanup
Desktop:
- Settings -> Providers -> Local models: one-click quickstart (install
engine, download the recommended model, boot) plus per-model download/
activate/eject, fit-ranked catalog with context pills
- model pickers (composer dropdown + Cmd+K) show staged local models,
in-flight downloads as live progress rows, and load-into-memory bars
- local-setup campaign tip for eligible hardware; System resources
statusbar widget (GPU/VRAM/RAM); in-chat load progress during sends
- friendly dead-server errors, and failed agent builds retry on the next
send instead of wedging the session
Co-developed with NVIDIA field feedback on RTX 5090 and DGX Spark.
Two callers of get_custom_provider_pool_key compared against its single
preferred key and broke when the pool held the other identity:
- _prune_replaced_custom_model_config_credentials skipped only the
preferred key, so a keyed provider's own legacy-named pool
(custom:b.ai) was false-pruned of its current model_config credential
when the preferred key resolved to the bare slug (b-ai).
- _seed_custom_pool seeded only when the pool key equaled the preferred
key, so a legacy-named pool stopped being seeded from model.api_key.
Both now compare against the full custom_provider_pool_key_candidates
set. Also drops a redundant get_custom_provider_pool_key call from
_try_resolve_from_custom_pool (it returned candidates[0], doubling the
config traversal) and updates the two test files that monkeypatched the
removed module attribute.
Follow-up to #100413.
hermes auth add stores providers.<key> credentials under the config
slug, but runtime only tried custom:<display-name> and then sent the
no-key-required placeholder. Try the slug first, keep the legacy
namespace as fallback, and thread provider_key/key_env through named
custom resolution.
Salvaged from PR #84199 by @RickyYii. DirectAlias gains api_key/key_env; the direct-alias override re-resolves credentials against the alias endpoint (host-gated, #28660) and reuses the pre-alias key only on an origin match; oneshot -m <alias> passes the alias key as explicit_api_key; direct-alias branch gains the OLLAMA_API_KEY host gate. Fixes#83612.
Forward normalized custom-provider capabilities on the default gateway path so native compaction does not depend on session rehydration. Document the content trust boundary and cover both lookup and gateway resolution.
Router shipped a minimal /v1/chat/completions compatibility surface
(translated onto Responses) after this PR was written, so the
'does not exist and 404s' wording is stale. Responses remains the
native wire — per-model reasoning-effort validation, reasoning
summaries, and prompt caching live there — so the api.router.com
host mandate is unchanged; only the comments and docs are updated.
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.
A session row persists the provider identity a chat actually used. When that
provider is later renamed or removed (e.g. a custom_providers:/providers:
entry deleted, or a provider renamed oldone->newone), Desktop/TUI resume
restores the stale name into agent init and dies with:
agent init failed: Unknown provider '<name>'
while the CLI resumes the same session fine with the configured default.
- runtime_provider: add is_routable_provider() (full resolution chain:
built-in -> providers: -> custom_providers: -> models.dev)
- _stored_session_runtime_overrides: heal a non-routable provider via
canonical_custom_identity (base_url -> model -> configured provider),
drop to the configured default when unrecoverable, and clear the stale
base_url after healing so a dead endpoint cannot override the registry URL
- _start_agent_build: gate deferred-resume overrides on provider routability;
when the stored provider is gone, prefer the model the user picked for THIS
session, else the configured default
- tests: is_routable_provider cases, heal/fallback round-trips, gate checks
Refs #75128
Test-pollution class: runtime_provider is usually imported lazily (inside
switch_model's resolution path), so its first import in a pytest worker can
happen while a test has hermes_cli.config.load_config patched. The
module-level from-import then bound the MagicMock permanently — after the
patch exited, every later caller in the process silently read the dead
test's config. Live victim: MoA aggregator context-length resolution
(resolve_runtime_provider -> AuthError 'Unknown provider custom:example'),
making TestMoAContextLength::test_moa_custom_context_configures_compressor_threshold
fail whenever it shared a process with
TestLocalOllamaModelDiscovery::test_switch_model_on_current_ollama_custom_endpoint_keeps_base_url.
Fix: load_config / get_compatible_custom_providers / normalize_extra_headers
become late-bound delegates resolving hermes_cli.config attributes at call
time. Both patch targets (config.load_config and
runtime_provider.load_config) keep working. Regression tests pin the
late-binding property and fail if the delegates revert to from-imports
(sabotage-verified).
resolve_runtime_provider() documents target_model as the explicit model
override for mid-session switches and auxiliary slots, but the custom
provider path (_resolve_named_custom_runtime) never received it and
silently substituted the provider's configured default_model instead.
This made auxiliary slots such as auxiliary.background_review silently
run the provider's default model rather than the configured one — e.g. an
ocx-proxy slot configured for gemini-flash actually executed
cursor/claude-sonnet-5, hitting upstream rate limits.
Pass target_model through to the custom runtime resolver and prefer it
over the provider's default model in both the pooled and non-pooled
credential paths.
Follow-up structural pass on the review fix:
- Runtime provider, auxiliary resolution, model validation
(hermes_cli/models.py), live discovery (bedrock_model_ids_or_none),
and the Mantle URL/SigV4 fallbacks all resolve their region through
resolve_bedrock_runtime_region() — one canonical implementation of the
config-first priority instead of three hand-rolled copies.
- agent_init: drop the 'if "client_kwargs" in locals()' guard by
initializing client_kwargs unconditionally at the top of the else
branch; the Mantle kwargs hook is a documented no-op for non-Mantle
base URLs.
Address review feedback on #65076:
- Add resolve_bedrock_runtime_region() to agent/bedrock_adapter.py: the
config-first region resolution (bedrock.region in config.yaml, then
AWS_REGION/AWS_DEFAULT_REGION/botocore profile/us-east-1) that the main
runtime resolver uses, exposed as a shared helper.
- Switch auxiliary client resolution (agent/auxiliary_client.py aws_sdk
branch) to the new helper. Previously it derived its region with bare
resolve_bedrock_region() (env-first), so when config.yaml pinned
bedrock.region to a different region than the ambient AWS env, auxiliary
calls (compression, memory, vision) left the primary runtime's region.
Both the AnthropicBedrock/Converse path and the new Mantle OpenAI
Responses path now resolve identically to the main runtime.
- Add regression tests covering the bedrock.region-vs-AWS_REGION mismatch
for both the Claude auxiliary path and the Mantle auxiliary path.
- Update website/docs/guides/aws-bedrock.md: the guide claimed Hermes never
uses the OpenAI-compatible endpoint, which the Mantle route made stale.
Document the triple routing (AnthropicBedrock / Mantle OpenAI Responses /
Converse), the Mantle auth model (bearer token or SigV4), and add the
GPT-5.5/5.6 model IDs to the models table.
Route Bedrock-hosted OpenAI GPT-5.5 through the Bedrock Mantle OpenAI Responses endpoint with SigV4 request signing. Keep native Bedrock Converse and Claude Bedrock routing unchanged, and add picker/runtime regression coverage.
Reworks the salvaged OpenCode Free provider to match the tier's real
auth contract (verified live 2026-08-21): the Zen relay serves free
models ANONYMOUSLY and 401s any unrecognized bearer, so the provider now
declares no credentials at all and routes every model through the shared
keyless machinery from the Ox Alpha fix (empty Authorization default
header overriding the SDK bearer).
On top of the salvaged base:
- auth.py: no api_key_env_vars; drop the keyed-auth special case
- runtime_provider.py: restore the plain fail-closed path (opencode-free
never reaches it — the keyless runtime resolves first)
- models.py: opencode-free joins the opencode family (prefix stripping,
Zen endpoint routing incl. muse->responses); keyless predicate extended
with unsuffixed free slugs (big-pickle); free runtime pins EVERY
opencode-free model keyless; curated catalog replaces the models.dev
cost==0 filter (it lags reality: deepseek-v4-flash-free stayed 'free'
there after its promo ended and the relay began 401ing it — delisted)
- agent_runtime_helpers.py: replace the httpx transport-sharing auth-strip
wrapper with the shared header policy (no proxy-mount loss)
- model_setup_flows.py: skip the API-key prompt for opencode-free
- plugin profile: keyless headers, no env vars
- .env.example + providers.md: keyless docs (no OPENCODE_FREE_API_KEY)
- tests rewritten to the keyless contract, incl. catalog-membership
invariant (every curated model must satisfy the keyless predicate)
E2E: full AIAgent turns with zero keys complete on x-preview-f-free via
provider opencode-free and alias 'free', incl. a real terminal tool
round-trip; muse routes to /v1/responses; picker lists 8 keyless models.
Adds an OpenCode Free provider plugin. Free model discovery uses models.dev
(cost.input == 0 AND status != "deprecated"), matching opencode CLI's exact
filter logic.
The free tier requires a real account API key and throttles third-party
clients by User-Agent:
- With OPENCODE_FREE_API_KEY configured, the key is sent as a Bearer token
and requests identify as "opencode/latest".
- Without a key, the keyless fallback strips the SDK's always-injected empty
Authorization header and still sends the opencode User-Agent.
- The credential resolver no longer blanks OPENCODE_FREE_API_KEY
unconditionally (the stale keyless-tier assumption), and credential-pool
exhaustion no longer surfaces the misleading "Set OPENCODE_FREE_API_KEY"
message.
Co-authored-by: Jean-François <jfm@laposte.net>
Signed-off-by: Rudraksh Chahal <131520192+rudrakshchahal@users.noreply.github.com>
The Zen relay serves *-free models (x-preview-f-free / Ox Alpha) ONLY
anonymously: any Authorization bearer it doesn't recognize is a 401
'Invalid API key' — including our no-key-required placeholder and valid
OpenCode GO subscription keys. The Go relay doesn't serve the free tier
at all ('Model x is not supported'). So the free model failed for every
Hermes user: keyless setups got the placeholder bearer, and OpenCode
subscribers sent a Go key to a relay that rejects it.
Fix (class-wide for all 8 current *-free Zen slugs, not just Ox Alpha):
- hermes_cli/models.py: is_opencode_zen_free_model / opencode_zen_free_runtime
/ opencode_zen_free_headers — one shared policy: free slugs pin to the
Zen relay with a keyless placeholder and an empty Authorization header
that overrides the OpenAI SDK's 'Bearer <key>'.
- runtime_provider.py: free slugs route through the keyless runtime before
the credential-pool/explicit/api_key paths (no key required; Go
selections heal to Zen). Paid models still fail closed without a key.
- agent_init.py + auxiliary_client.py: the placeholder key swaps in the
empty-Authorization headers at both client-build chokepoints.
Verified live (2026-08-21): anonymous chat/completions 200 incl. tools,
streaming, parallel; bad bearer 401; full E2E AIAgent turn with a real
terminal tool round-trip completes keyless under both opencode-zen and
opencode-go providers. Sabotage run: routing tests fail without the fix.
The named-custom-provider runtime path returned a static api_mode, so a
providers: entry like opencode-go-bridge -> https://opencode.ai/zen/go/v1
sent responses-only models (grok-4.5, gpt-5.6-luna) to /chat/completions
and got HTTP 503 (#85589 repro). Now: when the provider name is in the
OpenCode family or the base_url is hosted on opencode.ai, derive api_mode
from the effective model and run the symmetric /v1 normalization — unless
the user declared an explicit transport, which stays authoritative.
5 new regression tests against a real temp HERMES_HOME config.
Builds on @Lesnak1's #85619 (issue #85589):
- New opencode_provider_family() single-owner predicate in
hermes_cli/models.py — resolves built-in AND custom family providers
(opencode-go-bridge, OpenCode-Zen-Custom, ...) case-insensitively.
Migrated all 8 inlined family checks (models.py x3, runtime_provider.py
x4 from the salvaged commits) plus 4 sibling sites the PR missed:
cli.py api_mode sync, agent_runtime_helpers.py double-/v1 guard,
model_normalize.py flat-namespace strip, model_switch.py base_url
normalization.
- Responses transport: alias OpenCode-reserved function names
(web_search, search_files -> hermes_*) on the wire and map them back on
dispatch — same pattern as the xAI web_search collision fix. Matches
family providers and any base_url on opencode.ai. Fixes the HTTP 400
'custom function name X is reserved' half of #85589.
- Tests: custom-provider routing assertions + 5 new transport alias tests.
Implement Claude Opus review findings for Meta API support:
- Document in agent/agent_init.py that provider="meta" without an api.meta.ai URL falls through to chat_completions by design (URL-driven wire selection).
- Comment on suppression guard in hermes_cli/runtime_provider.py noting api.meta.ai is handled by _detect_api_mode_for_url.
- Replace inline __import__ with top-of-module import in tests/hermes_cli/test_model_switch_openai_api_mode.py.
- Rename test_meta_retention_not_sent_when_overridden -> test_meta_retention_override_wins in tests/agent/transports/test_meta_codex_cache.py.
- Add test in tests/agent/test_meta_agent_init.py for provider="meta" fallback without api.meta.ai URL.
- Add test in tests/agent/test_auxiliary_client.py for prompt_cache_retention: "24h" under _CodexCompletionsAdapter.
Source: Claude Opus review findings for feat/meta-api-support.
- hermes_cli/providers.host_mandated_api_mode: add exact-hostname clause for
api.meta.ai → codex_responses (measured 0% cache on /chat/completions vs
93-99% on /responses with retention); update docstring.
- hermes_cli/runtime_provider._detect_api_mode_for_url: mirror clause for
api.meta.ai (exact hostname, #32243) to keep runtime resolver in lockstep.
- agent/agent_init: call host_mandated_api_mode early in api_mode cascade
(after explicit api_mode wins, before provider-name specials) via lazy
import; single source of truth, preserves user override.
- agent/transports/codex._default_prompt_cache_retention_for_request: return
24h for api.meta.ai unconditionally; build_kwargs setdefault preserves
override; Bedrock branch untouched.
- cli-config.yaml.example: add commented providers.meta example (api_mode
auto-detected).
- website/docs/developer-guide/adding-providers.md: list Meta alongside
Codex/xAI as codex_responses native provider with retention note.
- tests: add hermetic behavior-contract suites for mandate, retention,
content-addressed prompt_cache_key, reasoning passthrough, AIAgent init,
usage cache reporting, model-switch override, and config roundtrip; extend
test_model_switch_openai_api_mode with meta cases.
Fixes#86864.
Legacy custom_providers configs commonly used short/placeholder
api_keys ('123', 'm') for local no-auth services like Ollama --
harmless for the endpoint itself, since Ollama accepts any key or no
key. A stricter has_usable_secret(value, min_length=4) gate added
later now rejects these, but only the credential-POOL resolution path
lacked the same "no-key-required" exemption every OTHER resolution
path in this file already has for exactly this scenario:
- The config-based custom_providers fallback (non-pool path) already
ends with `api_key or "no-key-required"`.
- The "actual" provider's local-offline path already injects
ACTUAL_LOCAL_NOAUTH_PLACEHOLDER before the usable-secret gate for a
loopback base_url.
- _try_resolve_from_custom_pool() was the one gap: it returned the raw
short pool credential unchanged, which then failed the downstream
has_usable_secret() gate with a generic "No usable credentials found
for custom" error that contradicts setup.status ("configured
credentials" vs "runtime failed"), sending users hunting in the
wrong direction.
Fixed by substituting the same "no-key-required" placeholder when the
pool's stored credential fails has_usable_secret() AND the base_url
resolves to a loopback hostname (using the existing _loopback_hostname
helper, matching the exemption scope the issue itself requested:
localhost/127.0.0.1/::1 only, not arbitrary remote endpoints with a
genuinely-too-short key).
Added 4 regression tests extending the existing
test_runtime_provider_resolution.py file, following its established
credential-pool mocking pattern: the exact reported 3-char repro
('123'), a 1-char case, a non-loopback sanity check confirming the
exemption stays scoped (a short key for a remote endpoint is NOT
silently exempted), and a sanity check that a genuinely usable
loopback key passes through unmodified. Verified as a genuine
regression by reverting the fix and confirming 2 tests fail with the
exact raw short key leaking through unchanged.
59/59 pass in the extended test file; 14/14 across two more related
custom-provider test files (no regression).
Custom providers could only authenticate from a static credential (inline
api_key or a key_env env var). Enterprise gateways -- SSO/OIDC brokers, cloud
IAM, internal auth proxies -- issue short-lived bearers instead, so a value
copied into .env is stale within the hour: long sessions start returning 401s
and the user has to restart or run an external cron that rewrites .env.
The existing `secrets.command` source does not cover this: it runs once per
process at startup (subsequent calls are no-ops by design), so it cannot
re-mint a credential mid-session.
Add providers.<name>.key_cmd: a command that prints a token, wrapped at
resolution in a zero-argument callable. Both wire clients already accept a
callable api_key and invoke it per request (the Entra ID path established
this), so chat_completions, codex_responses and anthropic_messages all work
unchanged and always send a fresh credential. The callable also routes the
Anthropic client through its per-request Authorization hook, which is what
OAuth-gated gateway routes require -- so no per-vendor auth wiring is needed
anywhere in core.
- cached until shortly before the advertised expiry (60s leeway), so the
helper runs about once per token lifetime rather than once per request
- expiry is read from the OAuth 2.0 relative `expires_in` when present, and
otherwise from an absolute ISO 8601 deadline (`expiry`, `expiresOn`), which
is what CLI token helpers commonly print. Reading only `expires_in` treated
those helpers as advertising no TTL at all, cached their token for the life
of the process, and returned 401 on every request once the real deadline
passed. ISO parsing reuses hermes_cli.auth._parse_iso_timestamp rather than
adding another datetime parser.
- no synthetic expiry: when no TTL is advertised, or the advertised one is
unparseable or already past, the token is used and refreshed on 401 instead
of re-minted on an invented schedule
- stdout contract matches OAuth 2.0 token endpoints and existing agent
helpers (bare token or JSON access_token/expires_in); multi-line output is
rejected rather than guessed at, so a misconfigured helper surfaces as a
clear error instead of a corrupt-credential 401
- precedence: explicit --api-key still wins; otherwise key_cmd beats a
static api_key/key_env on the same entry
- failures never include the helper's output (may hold a partial token) or
the command string (may embed a client secret)
Resolution happens on two paths. agent/auxiliary_client.py resolves named
custom providers itself rather than calling _resolve_named_custom_runtime, so
key_cmd is honoured in both: wiring only the runtime resolver leaves the main
agent turn working while every auxiliary call (title generation, compression,
vision, embedding) falls back to the no-key-required placeholder and 401s.
Precedence is identical on both paths, so one config entry cannot yield two
different credentials depending on which resolver the caller reached.
Closes#84162
Signed-off-by: LordMelkor <kray@block.xyz>
Replace raw substring checks ("azure.com" in full_url) with the existing
base_url_host_matches() helper at two sites in runtime_provider.py.
The substring approach misclassified URLs whose path (not hostname)
contained "azure.com" — e.g. https://example.invalid/proxy/azure.com/v1 —
causing the wrong credential (Azure key instead of explicit Anthropic token)
to be selected, and potentially leaking a more-privileged Azure key across
a trust boundary.
base_url_host_matches() parses the URL and validates only the hostname
against allowed Azure suffixes with proper boundary rules.
Fixes#74312
Promote _split_model_config_default to hermes_cli/config.py as the single
shared helper for flattening dict-valued model.default/model.model config.
All 8 defense-in-depth sites now route through it instead of inlining
their own isinstance checks with inconsistent key orders.
Changes:
- Add split_model_config_default() to hermes_cli/config.py (public)
- cli.py: _split_model_config_default delegates to shared helper
- Fix key extraction order: agent_runtime_helpers.py was reversed
(default->model); now consistent (model->default) across all sites
- Remove provider-as-model-name fallback from main.py, oneshot.py,
model_tools.py, cli.py — provider is a routing key, not a model ID
- Add 'name' to _normalize_root_model_keys flattening loop and
_has_nested_default detection to cover the deprecated model.name alias
Tests: 118 passed + 1 skipped (cli_init, managed_scope, config).
E2E: 31/31 passed (config chokepoint, managed scope, crash site,
negative cases, edge cases).
A dict-valued model.default (e.g. {provider:..., model:...}) in config.yaml
was leaking into agent.model and crashing the agent at init:
AttributeError: 'dict' object has no attribute 'lower'
agent/agent_runtime_helpers.py: anthropic_prompt_cache_policy
This manifested on the Telegram gateway as an infinite reset loop: every
turn built an agent with model=dict, crashed during init, the gateway
treated the failed turn as a session needing reset, and /reset rebuilt the
agent and crashed again.
Coerce dict -> string at every model-resolution entry point so the value
is normalized once and never reaches a .lower() call as a dict:
- agent/agent_runtime_helpers.py: anthropic_prompt_cache_policy (the crash site)
- agent/agent_init.py: configured default model resolution
- cli.py: CLI config model + _normalize_model_for_provider
- hermes_cli/main.py: _has_any_provider_configured
- hermes_cli/oneshot.py: _run_agent model resolution
- hermes_cli/runtime_provider.py: _get_model_config default handling
- model_tools.py: _resolve_active_context_length
Port of the bug class from earendil-works/pi#7933 (DeepSeek base-URL
detection matched by raw substring, missing case variants and matching
lookalike URLs). Hermes had the same class at five sites:
- cli_agent_setup_mixin.py: keyless-custom-endpoint detection treated any
URL containing the OpenRouter host substring (path segment, lookalike
domain) as OpenRouter, and missed case variants of the real host.
- models.py validate_requested_model: same substring check for routing an
openrouter provider with a custom base_url to the custom catalog.
- runtime_provider.py: local-endpoint autodetect matched the string
localhost anywhere in the URL, including remote hostnames containing it.
- gateway/run.py: /status endpoint display, same local-host substring.
- agent_runtime_helpers.py: Nous Portal cache-layout detection matched
the nousresearch substring anywhere in the URL.
All sites now use the existing base_url_host_matches / base_url_hostname
helpers (exact host or subdomain, case-insensitive). Regression tests
proven to fail against the old predicates.
Earlier releases accepted api_mode: openai on custom provider entries.
The canonical transport set is now {chat_completions, codex_responses,
anthropic_messages, bedrock_converse, codex_app_server}, and an
unrecognized value was silently ignored at both consumption sites
(_normalize_custom_provider_entry passes the raw string through and
agent_init's accepted-set check drops it; _parse_api_mode returns None),
falling through to hostname-based detection.
For hosts with a detection rule the provider silently switches
transports after an update. Observed live: a custom entry for
api.actual.inc with api_mode: openai (valid when written) flipped to
codex_responses via the hostname rule, and every reasoning-bearing
request to the relay's /v1/responses failed with a wrapped non-JSON
error while /v1/chat/completions worked throughout.
Fix: one shared alias map (_canonical_api_mode) consulted by both
sites. openai/openai_chat -> chat_completions, responses ->
codex_responses, anthropic/messages -> anthropic_messages, bedrock ->
bedrock_converse. Canonical names and unknown values pass through
unchanged, so invalid-config behavior is untouched.
Tests: alias map contract (every alias lands in _VALID_API_MODES),
normalizer canonicalization incl. the transport: key alias, and the
runtime gate accepting legacy spellings while still rejecting unknowns.
- fetch_models(): accept base_url kwarg (interface grew on main since May)
- runtime_provider: config-driven loopback base_url now reaches the local
no-auth placeholder before the usable-secret gate (added on main in the
interim, would otherwise AuthError on keyless local setups)
- test: fetch is now called with base_url by the generic live-fetch path
7b5a18817 migrated the sibling slug sites to custom_provider_slug, which
keeps a keyed providers: entry's config key as its durable identity. It
covered find_custom_provider_identity_by_model; canonical_custom_identity's
third recovery source - the configured-provider fallback - still built
f"custom:{normalized}" out of whatever string the caller happened to hold.
_get_named_custom_provider matches on either spelling, so a display name
that differs from its config key matches the entry and then heals to
custom:<display-name>. That is a second identity for one endpoint: the
endpoint- and model-based sources of the same function return
custom:<config-key>, and so does everything that persists or restores a
session's provider override. canonical_custom_identity exists precisely to
make a bare "custom" routable again, and tui_gateway calls it on the
session-persist, resume and recovery paths - so the divergence lands in
stored session identity.
Re-resolve through the endpoint the matched entry owns, reusing the
function's own URL-based canonicaliser rather than duplicating the match
logic. Legacy unkeyed custom_providers: entries keep their name identity,
and an unconfigured candidate still returns None.
_resolve_explicit_runtime's generic-provider branch accepted model_cfg's
persisted api_mode unconditionally, letting a stale mode from a previous
provider (e.g. anthropic_messages) leak into a newly-switched provider
(e.g. gemini) and break the transport. Reuse the existing
_provider_supports_explicit_api_mode guard, already used by the copilot
and named-custom-provider resolution paths for exactly this case, so the
persisted mode is only honored when model_cfg's provider matches the one
being resolved.
Closes#74318
The P1 from the enterprise data-residency report: with
model.base_url=https://us.api.openai.com/v1, every tool-calling turn 400'd
('Function tools with reasoning_effort are not supported ... use
/v1/responses') because the runtime resolvers hardcoded
api_mode=chat_completions and consulted URL detection only. openai-api
declares codex_responses in its overlay; the declaration was never
consulted, so any OpenAI host that wasn't literally api.openai.com landed
on the wrong wire protocol.
New _fallback_api_mode(provider, base_url, model): URL detection first
(host-mandated wire shapes keep priority), then
providers.determine_api_mode() (the provider's declared transport), then
chat_completions only for genuinely unknown providers. All three runtime
fallback sites route through it: the pool-entry path, the explicit-runtime
path, and the API-key-provider path, so the lanes cannot drift apart.
Blast radius beyond openai-api: minimax, minimax-cn, and copilot-acp were
the other overlays whose declared non-chat transport fell through to
chat_completions on the same paths (same latent bug class). openrouter is
unaffected (declares openai_chat). _detect_api_mode_for_url also now uses
the shared official-host predicate, so regional hosts detect as
codex_responses on the direct-URL lane too.
find_custom_provider_identity_by_model (runtime_provider.py:895,908) and
acp_adapter/server.py:149 still used the old f"custom:{_normalize_custom_provider_name(...)}"
pattern while the rest of the codebase migrated to custom_provider_slug.
For keyed providers whose display name differs from their config key, the
model-based reverse lookup would return custom:<display-name> instead of
the stable custom:<provider_key> identity every other code path returns.
Co-authored-by: Gille <4317663+helix4u@users.noreply.github.com>
Use providers keys as the canonical custom-provider identity while accepting legacy bare keys, display-name slugs, bare custom fallback, and doubled custom prefixes across resolution, pickers, doctor, and runtime reverse lookup.
Co-authored-by: Bakhtier Sizhaev <bakhtiersizhaev@users.noreply.github.com>
Local-model users paid a fresh probe waterfall on EVERY CLI cold start
inside AIAgent.__init__: detect_local_server_type (up to 4 HTTP GETs,
2s timeout each on a hung server) + /api/show (3s timeout). The
existing caches were in-process only, so back-to-back invocations
(chat -q, cron ticks, subagents) re-paid the network every time.
- New 300s-TTL disk L2 at HERMES_HOME/cache/local_endpoint_probes.json
for detect_local_server_type verdicts and query_ollama_num_ctx
results. Only SUCCESSFUL probes persist (a down server never pins a
negative verdict); stale entries pruned on write; corrupted cache
degrades to a miss; atomic writes. 300s is strictly fresher than the
1h in-process TTL that already accepts server-swap staleness.
- models.dev fetch timeout 15 -> (5, 10) connect/read tuple: a
blackholed connect stalled the first-turn critical path 15s; now
fails in 5s (matches the OpenRouter fetch convention, #46620).
- _auto_detect_local_model timeout 5 -> (2, 3): runs inside
_get_model_config() at startup against a LOCAL endpoint; a hung local
server cost 5s before the banner.
E2E (real HTTP server, two fresh subprocesses, isolated HERMES_HOME):
proc1 = 2 HTTP hits, proc2 = 0 HTTP hits, identical results
(ollama/131072), probe wall 74.5 -> 35.5 ms. 222 targeted tests green
incl. 9 new disk-L2 contract tests.
A session pinned to a named custom provider could silently reroute to the
user's default provider on resume/rebuild. Session rows persist the RESOLVED
provider — bare "custom" for every named providers:/custom_providers: entry —
and when no base_url survived in model_config, the existing heal
(canonical_custom_identity) had only the config.model.provider fallback left.
For users whose global default is a BUILT-IN provider (e.g. nous) that tier
cannot fire, so the bare provider was dropped, resume fell back to the default
provider with the session's custom model name, and the default endpoint 404'd
with "Model '<x>' not found. The requested model does not exist in our
configuration or OpenRouter catalog." Re-selecting via /model fixed it until
the next resume — the reported symptom.
Add a model-name recovery tier between the base_url reverse-lookup and the
config fallback: find_custom_provider_identity_by_model() maps the stored
model back to the entry that serves it (model/default_model/models catalog,
dict and legacy list shapes). The session row always stores the model, so the
entry identity survives even when the row has no base_url AND the global
default points elsewhere.
All five bare-custom heal sites in tui_gateway/server.py now pass the model:
_ensure_session_db_row, _stored_session_runtime_overrides,
_runtime_model_config, _make_agent, and _model_picker_context.
Removes Homebrew and PyPI wheel/sdist as Hermes distribution paths while
preserving the supported source, Docker, and Nix workflows.
Changes:
- Removes the Homebrew formula, PyPI publish workflow, sdist manifest
(MANIFEST.in), and wheel/sdist release-attachment logic from scripts/release.py.
- Keeps setuptools metadata and entry points required by editable installs
and Docker/Nix builds, but adds a setup.py guard that rejects wheel/sdist
builds outside a sealed Nix derivation (HERMES_NIX_BUILD=1).
- Removes pip/Homebrew install detection, PyPI update checks, the pip
self-update path, the deprecation-banner state, the postinstall subcommand,
wheel data-directory fallbacks in agent/i18n.py and hermes_constants.py,
and the ACP Registry manifest/version-lockstep release logic.
- Adds /nix/store/ path detection so `nix run` / `nix profile install`
installs (which don't set HERMES_MANAGED) are correctly identified as
"nix" rather than falling through to "git"/"unknown".
- Retired install-method values ("pip", "homebrew") in existing
.install_method stamps (both code-scoped and home-scoped) are ignored by
the allowlist reader and fall through to "unknown" instead of resurrecting
a retired enum value.
- Updates Nix packaging to ship bare runtime data (locales, optional-mcps)
through store symlinks and wrapper env vars instead of wheel data-files.
- Removes the ACP Registry manifest/icon and their version-lockstep tests.
- Deletes or rewrites packaging, pip-update, Homebrew, and ACP Registry
tests; adds parametrized coverage for the packaging build guard covering
BOTH sdist and wheel paths (the guards live in separate cmdclass entries
— a passing sdist test proves nothing about the wheel path).
- Updates installation/platform documentation and related user-facing copy.
- Adjusts the supply-chain scan so deleted install-hook files do not trigger
a finding, while additions or modifications still require the existing
ci-reviewed label gate.
Supported installation paths (unchanged):
- git installer (install.sh)
- Docker
- Nix/NixOS
- editable development installs (uv sync, uv pip install -e ., pip install -e .)
The first commit's gate sat inside ``_get_named_custom_provider`` —
which only handles user-defined custom blocks. Built-in provider names
(``openai`` / ``anthropic`` / ``openrouter`` / ``gemini`` / ...) have
their own resolution paths in ``resolve_runtime_provider`` (pool /
explicit / generic / ``resolve_provider``) and bypass that gate.
So a user who flipped ``providers.openrouter.enabled: false`` would
still see OpenRouter resolved when something explicitly requested it
(e.g. a fallback chain entry). That defeats the point of the flag.
This commit moves the gate one level up: right after
``requested_provider`` is computed, before any custom / built-in /
Azure short-circuit. It now raises a typed ``ValueError`` referencing
the YAML path, so callers can recognise it and advance to the next
fallback instead of silently using a disabled provider.
3 new tests cover:
* disabled custom provider raises
* disabled built-in provider raises
* enabled provider doesn't hit the gate
All 20 tests in the providers suite pass.
A ``providers.<name>`` block in ``config.yaml`` can now opt out of being
listed anywhere by setting ``enabled: false`` — without removing the
block, so re-enabling it stays a one-line edit. Missing or ``true`` keeps
the previous behaviour (enabled), so this is fully backwards-compatible.
The flag is honoured in four places:
* ``hermes_cli/model_switch.py`` — model-override validation (the
allow-list that the picker consults to accept a non-public model id)
and the picker's own endpoint iteration. A disabled provider no longer
appears as a row and its models can't be silently accepted via
override.
* ``hermes_cli/runtime_provider.py`` — the runtime resolver skips
disabled blocks, so an explicit ``--provider X`` against a disabled
entry fails fast instead of using stale base_url / api_key from the
ignored block.
* ``hermes_cli/doctor.py`` — the doctor's "configured providers" set
excludes disabled entries, so health checks don't flag missing API
keys for providers the user has turned off.
Motivation: when a user has 20+ providers wired up in ``config.yaml``
(many of them only used occasionally) the picker becomes noisy and the
runtime resolver may pick a suboptimal one on ambiguous --provider names.
There's currently no way to hide a provider short of deleting its block
— which loses the api_key + base_url + custom routing config the user
spent time wiring. ``enabled: false`` lets them keep the config but get
it out of the way.
The helper ``is_provider_enabled()`` in ``hermes_cli/config.py``
centralises the gate (and accepts YAML-stringified booleans like
``"false"`` for hand-edited configs). 17 unit tests cover the defaults
and edge cases.
A follow-up PR can wire ``hermes provider enable/disable <name>`` and a
dashboard toggle on top of this primitive — they reduce to mutating the
flag.
Teknium