The provider picker had two separate preset definitions and some defaults had
started to drift from the model IDs vendors document for Claude Code /
Anthropic-compatible usage. This change moves built-in presets to one
server-side JSON source, serves that source through the existing presets API,
and makes the desktop settings page consume the API instead of a duplicated
frontend constant. The preset defaults were then corrected against vendor docs
so the built-in values match documented model IDs and casing.
Constraint: Built-in provider defaults must match official vendor Claude Code or Anthropic docs
Rejected: Keep duplicated frontend and backend preset lists | values and casing drifted independently
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Update src/server/config/providerPresets.json and rerun provider-presets tests before changing built-in provider defaults again
Tested: bun test src/server/__tests__/provider-presets.test.ts; cd desktop && bun run lint
Not-tested: Manual desktop settings UI interaction after fetching presets from the API
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>
