When a tool call is made, stopReason is set to 'tool_use'. However, when
finishReason: STOP arrives later, it was overwriting stopReason back to
'end_turn', breaking multi-turn tool conversations in clients like OpenCode.
Fix: Initialize stopReason to null and only set it from finishReason if
not already set. This ensures tool_use is preserved once detected.
Fixes#96
Co-Authored-By: Claude <noreply@anthropic.com>
When all accounts fail with HTTP 500/503 errors (e.g., Google API returning
'Unknown Error' for Claude models on large conversations), the proxy now
attempts to use a fallback model if --fallback is enabled.
This enables graceful degradation when:
- All accounts are exhausted due to 5xx errors (not just rate limits)
- Claude models fail on very large conversations
- The API has temporary issues with specific models
The fallback uses the existing MODEL_FALLBACK_MAP configuration:
- claude-opus-4-5-thinking -> gemini-3-pro-high
- claude-sonnet-4-5-thinking -> gemini-3-flash
Relates to #88
- Add [ignore] tags around system instruction to prevent model from
identifying as "Antigravity" when asked "Who are you?"
- Replace full system instruction with minimal version used by
CLIProxyAPI/gcli2api to reduce token usage and improve response quality
Fixes#76
Co-Authored-By: Claude <noreply@anthropic.com>
Fixes issue #71 - 'No accounts available' error when API returns 429
The Google Cloud Code API can return 429 RESOURCE_EXHAUSTED errors even
when accounts have quota available due to:
- Temporary API load/throttling
- Per-minute request limits (not per-day quota)
- Transient backend issues
This fix adds:
1. A 500ms buffer after waiting for rate limits to expire
2. Optimistic rate limit reset when all accounts appear stuck
3. Retry logic that clears rate limits and tries again
The fix works in conjunction with the server-level optimistic reset
that already exists, providing multiple layers of protection against
false 'No accounts available' errors.
Co-Authored-By: Claude <noreply@anthropic.com>
Issues found by Claude Opus 4.5 + Gemini 3 Pro:
HIGH PRIORITY FIXES:
- Mark account rate-limited when 429 occurs during retry (was losing resetMs)
- Add exponential backoff between retries (500ms, 1000ms, 2000ms)
- Fix 5xx handling: don't pass error response to streamer, refetch instead
- Use recognizable error messages (429/401) for isRateLimitError/isAuthError
MEDIUM PRIORITY FIXES:
- Refactor while loop to for loop for clearer retry semantics
- Simplify logic flow with early returns
Code review by: Claude Opus 4.5 + Gemini 3 Pro Preview
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Move MAX_EMPTY_RESPONSE_RETRIES to constants.js for consistency
- Handle 429/401/5xx errors properly during retry fetch
- Use proper message ID format (crypto.randomBytes) instead of Date.now()
- Add crypto import for UUID generation
Code review by: Gemini 3 Pro Preview + Claude Opus 4.5
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
When Claude Code sends requests with large thinking_budget values,
the model may spend all tokens on "thinking" and return empty responses,
causing Claude Code to stop mid-conversation.
This commit adds a retry mechanism that:
- Throws EmptyResponseError instead of emitting fake message on empty response
- Retries up to 2 times before giving up
- Emits fallback message only after all retries are exhausted
Changes:
- src/errors.js: Added EmptyResponseError class and isEmptyResponseError()
- src/cloudcode/sse-streamer.js: Throw error instead of yielding fake message
- src/cloudcode/streaming-handler.js: Added retry loop with fallback
Tested for 6+ hours with 1,884 API requests and 88% recovery rate
on empty responses.
Fixes#61🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* feat: apply local user changes and fixes
* ;D
* Implement OpenAI support, model-specific rate limiting, and robustness fixes
* docs: update pr title
* feat: ensure unique openai models endpoint
* fix: startup banner alignment and removed duplicates
* feat: add model fallback system with --fallback flag
* fix: accounts cli hanging after completion
* feat: add exit option to accounts cli menu
* fix: remove circular dependency warning for fallback flag
* feat: show active modes in banner and hide their flags
* Remove OpenAI compatibility and fallback features from PR #35
Cherry-picked selective fixes from PR #35 while removing:
- OpenAI-compatible API endpoints (/openai/v1/*)
- Model fallback system (fallback-config.js)
- Thinking block skip for Gemini models
- Unnecessary files (pullrequest.md, test-fix.js, test-openai.js)
Retained improvements:
- Network error handling with retry logic
- Model-specific rate limiting
- Enhanced health check with quota info
- CLI fixes (exit option, process.exit)
- Startup banner alignment (debug mode only)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
* banner alignment fix
* Refactor: Model-specific rate limits and cleanup deprecated code
- Remove global rate limit fields (isRateLimited, rateLimitResetTime) in favor of model-specific limits (modelRateLimits[modelId])
- Remove deprecated wrapper functions (is429Error, isAuthInvalidError) from handlers
- Filter fetchAvailableModels to only return Claude and Gemini models
- Fix getCurrentStickyAccount() to pass model param after waiting
- Update /account-limits endpoint to show model-specific limits
- Remove multi-account OAuth flow to avoid state mismatch errors
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
* fix: show (x/y) limited status in account-limits table
- Status is now "ok" only when all models are available
- Shows "(x/y) limited" when x out of y models are exhausted
- Provides better visibility into partial rate limiting
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
* docs: update CLAUDE.md with model-specific rate limiting
- Document modelRateLimits[modelId] for per-model rate tracking
- Add isNetworkError() helper to utilities section
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
---------
Co-authored-by: M1noa <minoa@minoa.cat>
Co-authored-by: Minoa <altgithub@minoa.cat>
Co-authored-by: Claude <noreply@anthropic.com>
