Files
OmniRoute/docs
Innokentiy Solntsev dd70dbdaa0 fix(sse): Anthropic OAuth 403 "Request not allowed" is a per-request refusal — cooldown with backoff instead of an instant ban (#12859) (#12864)
* fix(sse): Anthropic OAuth 403 "Request not allowed" is a per-request refusal, not a ban

A single upstream 403 on the `claude` OAuth connection was classified
FORBIDDEN and written as the terminal `banned` connection state
(chatCore -> writeTerminalStatus). From then on every request to that
provider was short-circuited with "All 1 connection(s) banned by
upstream - please reconnect in the dashboard" without touching Anthropic,
until an operator reconnected.

Anthropic's OAuth surface answers a small fraction of otherwise-valid
requests with 403 {"type":"permission_error","message":"Request not
allowed"}. On the reporting install the same token returned 200 forty
seconds before the 403 and again right after the connection was
re-enabled; a revoked or expired token is a 401 authentication_error, not
this. It is a refusal of one request, not of the credential.

Classify it as the new non-terminal PROVIDER_ERROR_TYPES.REQUEST_REJECTED
(scoped to provider `claude` and the "Request not allowed" body) and list
that type in authTerminalStatus.isNonTerminalProviderError, mirroring the
Cloudflare FINGERPRINT_REJECTION precedent. The combo layer still falls
through to the next target for the failing request; the connection stays
active for the next one. Any other claude 403 keeps its previous
classification.

Tests: error-classifier.test.ts covers the Anthropic body, the
gateway-flattened "[403]: Request not allowed" message, the same body from
a non-Anthropic provider (still FORBIDDEN), other claude 403s (unchanged),
and the helpers; anthropic-request-not-allowed-not-a-ban.test.ts pins
resolveTerminalConnectionStatus() -> null for the new type even with a
`permanent` fallback verdict, and `banned` for a generic claude 403.

* fix(sse): cooldown with backoff and streak escalation for REQUEST_REJECTED (#12859)

Not "ignore the 403" either: if Anthropic ever made "Request not allowed"
systematic, re-sending every request into it would be the wrong thing to
do to an OAuth account. chatCore now handles REQUEST_REJECTED explicitly:

- exclude the connection via setConnectionRateLimitUntil for a growing
  cooldown (5 -> 15 -> 45 min) so a sporadic refusal costs minutes, not a
  reconnect, and a systematic one cannot become a stream of 403s;
- escalate to the terminal `banned` state only for 3 refusals within a
  60-minute window (services/requestRejectedStreak.ts, in-memory per
  connection; a restart forgets the streak, erring towards more cooldowns
  rather than an operator-undone ban), with a last_error that says so;
- probe-origin failures record but never cool down or ban (#9817).

The existing "request not allowed" text rule (5 s) is unaffected:
markAccountUnavailable skips a connection that already has a future
rateLimitedUntil, so the minute-scale cooldown written here wins.

Tests: request-rejected-streak.test.ts pins the window/threshold/backoff
arithmetic; anthropic-request-not-allowed-cooldown-escalation.test.ts drives
the real chat route against a mocked 403 upstream on a `claude` OAuth
connection: 300 s cooldown, then 900 s, then banned on the third refusal;
a different claude 403 body still bans on the first response.

* chore(changelog): name the #12859 fragment after its PR (#12864)

* refactor(sse): move the REQUEST_REJECTED branch into a chatCore leaf; register its tests for mutation coverage

chatCore.ts is frozen at 5984 lines by the file-size ratchet; the branch
body now lives in open-sse/handlers/chatCore/requestRejectedFailure.ts
(chatCore: 5974 -> 5983). stryker.conf.json tap.testFiles gains the two new
DB-backed tests so their mutant kills count (check:mutation-test-coverage).

* fix(sse): count refusal episodes, reset on success, keep the dashboard honest (#12859 review)

Review findings on the first cut of the REQUEST_REJECTED handling:

- A burst of in-flight requests that all got the 403 within seconds
  produced streak 1, 2, 3 and a ban from one upstream event. The streak
  now counts cooldown *episodes*: a refusal that lands while the
  connection is already excluded is the same event and is not counted.
- Nothing reset the streak on a healthy response, so sporadic refusals
  on a busy install could still accumulate to a ban. chatHelpers'
  onRequestSuccess now clears it (only a real success does - the recovery
  tick's clearAccountError is an elapsed cooldown, not a success).
  Clearing the cooldown by hand in the dashboard clears it too.
- The third rung of the ladder was unreachable (the third refusal
  escalates): the ladder is now 5 -> 15 min, sourced from COOLDOWN_MS next
  to the existing 5 s "request not allowed" rule, with a note on why that
  rule is superseded for claude. The 60-min window becomes a 24 h
  staleness bound - "consecutive" is defined by successes, not by time.
- Probe-origin refusals no longer touch the streak (#9817).
- The cooldown is written like every other connection-level cooldown:
  ISO rateLimitedUntil + testStatus "unavailable" (+ lastErrorAt), so the
  dashboard shows the countdown and the recovery tick restores "active".
- One refusal is re-seeded from the persisted row after a restart so a
  crash loop cannot reset the count on every boot.

Docs: RESILIENCE_GUIDE terminal states + CODEBASE_DOCUMENTATION resilience
row mention the streak module. Tests cover the burst, the success reset,
the seed, and the ISO/unavailable shape end-to-end through the chat route.

* chore(sse): drop unrelated Prettier churn in auth.ts / providers route

* style(api): keep providers route Prettier-clean

* refactor(sse): share the "exclude connection for a cooldown" leaf between GEO_BLOCKED, GCP_PROJECT_REQUIRED and the new branch

The release tip moved chatCore.ts to its frozen 5984 lines, so the
REQUEST_REJECTED branch cannot add a single net line. The GEO_BLOCKED and
GCP_PROJECT_REQUIRED branches were the same eight statements with different
constants and log wording; both now call
open-sse/handlers/chatCore/connectionCooldown.ts::excludeConnectionForCooldown
(behaviour, probe guard and log lines preserved verbatim). chatCore.ts ends
9 lines below the base it branched from.

* chore(chatCore): tighten the cooldown comments to keep the file under its size ceiling

After merging release/v3.8.51, chatCore.ts sat at 6150 lines against a
frozen ceiling of 6146. Condense the explanatory comments this PR added
to the GEO_BLOCKED and GCP_PROJECT_REQUIRED branches; no code change.

Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>

---------

Co-authored-by: insoln <is@careerum.com>
Co-authored-by: diegosouzapw <8016841+diegosouzapw@users.noreply.github.com>
2026-09-17 16:26:08 -03:00
..
2026-09-17 13:34:45 -03:00
2026-06-29 08:40:06 -03:00

title, version, lastUpdated
title version lastUpdated
OmniRoute Documentation 3.8.40 2026-06-28

OmniRoute Documentation

Navigable index of the OmniRoute documentation set. Topics are grouped by intent so you can find what you need quickly.

Looking for the project overview, install steps, or release notes? See the root README.md, ROADMAP.md, CHANGELOG.md, and CONTRIBUTING.md.


For Non-Tech Users

Simple guides for using OmniRoute — no technical background needed.

getting-started/

guides/


For Tech Users

Technical documentation for developers and contributors.

architecture/

How the system is put together — read these to understand the runtime, code layout, and resilience model.

reference/

Lookup material — API surface, environment variables, CLI flags, provider catalog.

frameworks/

Pluggable subsystems exposed to clients, agents, and operators.

routing/

Combo routing, scoring, and replay.

security/

Guardrails, compliance, stealth, and the mandatory patterns for handling public credentials and error messages.

compression/

Prompt compression engines, rules, and language packs.

providers/

Provider-specific integration guides.

comparison/

ops/

Release, deployment, proxies, tunnels, coverage, database, monitoring.

diagrams/

Mermaid sources and exported SVG/PNG diagrams referenced from the docs above. See diagrams/README.md.

i18n/

Translated mirrors of the documentation in 65 locales (plus the English originals — 66 languages in total). See i18n/README.md for the supported language list.

screenshots/

Static screenshots used by the dashboard and the README. Not part of the doc body.


Auto-generated artifacts

  • reference/PROVIDER_REFERENCE.md is generated by scripts/docs/gen-provider-reference.ts from src/shared/constants/providers.ts. Do not edit by hand.
  • The /docs UI is backed by Fumadocs MDX source generation from the subfolders above.