Tested:
- bun test src/services/api/claudeEffort.test.ts src/server/__tests__/proxy-transform.test.ts src/utils/__tests__/thinking.test.ts
- bun run check:server
- git diff --check
Not-tested:
- bun run verify / coverage
Confidence: high
Scope-risk: narrow
Fixes#827, #857, #860, #885.
Reproduced #827 with a delayed pasted-image FileReader result that reappeared after send; fixed by invalidating stale paste callbacks after submit or session switch.
Reproduced #857 with TCP accepting while /health stayed unhealthy; fixed Electron sidecar readiness to require HTTP /health status ok before continuing.
Reproduced #860 through OpenAI-compatible sampling param pass-through and missing GLM-5.2 context metadata; fixed sampling params to be opt-in and added GLM-5.2 context windows for preset and core resolution.
Reproduced #885 with a truncated long sidebar title lacking a row tooltip; fixed by exposing the full title on the session row.
Tested: cd desktop && bun run test -- src/components/chat/ChatInput.test.tsx src/components/layout/Sidebar.test.tsx --run
Tested: cd desktop && bun test electron/services/sidecarManager.test.ts
Tested: bun test src/server/__tests__/proxy-transform.test.ts src/server/__tests__/provider-presets.test.ts src/services/compact/autoCompact.test.ts
Tested: bun run check:server
Tested: bun run check:desktop
Tested: bun run check:native
Confidence: high
Scope-risk: moderate
Strip the rotating billing attribution line before converting system
prompts to OpenAI Chat/Responses requests, forward a stable
prompt_cache_key derived from the client session, request stream usage
explicitly on Chat streams, and map cached_tokens back to Anthropic
cache_read_input_tokens with exclusive input accounting.
Add a protocol-translating reverse proxy that allows using OpenAI-compatible
API providers (DeepSeek, OpenRouter, Groq, etc.) with Claude Code.
The proxy intercepts Anthropic Messages API requests from the CLI, transforms
them to OpenAI Chat Completions or Responses API format, forwards to the
upstream provider, and transforms streaming/non-streaming responses back.
Key features:
- Request transform: Anthropic Messages → OpenAI Chat/Responses
- Response transform: OpenAI → Anthropic (streaming SSE + non-streaming)
- Provider-agnostic reasoning support (reasoning_content, thinking_blocks,
reasoning fields from DeepSeek, OpenAI o-series, GLM-5, Groq, etc.)
- Event queue pattern for correct Anthropic SSE event ordering
- Two-step test: ① connectivity check ② full proxy pipeline validation
- Desktop UI: API format selector, two-step test results display
- License attribution for cc-switch (MIT, Jason Young)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
