feat(anthropic): add Anthropic Messages API endpoints and Claude model profiles - #74
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…l profiles
Implements the Anthropic Messages API simulation so the official Anthropic SDKs
work when pointed at {base_url}/anthropic.
- POST /anthropic/v1/messages (streaming + non-streaming)
- GET /anthropic/v1/models and GET /anthropic/v1/models/:id
- Realistic Claude model profiles (models.dev) using the real Anthropic API
model IDs (claude-opus-4-8, claude-sonnet-4-6, claude-haiku-4-5,
claude-fable-5, ...) plus dated-snapshot and -latest aliases
- Anthropic SSE event sequence (message_start, content_block_delta,
message_stop) with no [DONE] sentinel
- Anthropic error envelope and scripted tool_use support
- messages_requests stat counter (HTTP + TUI)
- Integration tests, multi-stack examples (Python, TypeScript, Go, curl,
LangChain), and specs/anthropic-api.md
…; expand README
- CI `examples` job now runs the Anthropic Python (anthropic_client,
anthropic_langchain), TypeScript, Go, and curl examples against the server.
- Add `@anthropic-ai/sdk` to examples/node deps; add Go toolchain setup.
- Commit examples/go/{go.mod,go.sum} so the Go example runs without manual
setup; ignore the compiled binary.
- README: streaming-format note, Anthropic SDK quick-start snippet, real
Anthropic model-ID note, and an examples pointer.
…de-endpoints-r5jwuf # Conflicts: # .github/workflows/ci.yml # examples/README.md # examples/node/package-lock.json # examples/node/package.json
The doc CI job runs cargo doc with -D warnings; rustdoc's bare-urls lint rejected two bare URLs in /// comments. Wrap them in <> to make them automatic links.
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What
Adds full Anthropic Messages API simulation under the
/anthropicprovider prefix:POST /anthropic/v1/messages— streaming and non-streamingGET /anthropic/v1/modelsandGET /anthropic/v1/models/:idNew
src/anthropic/module (types.rs,models.rs,stream.rs) plussrc/cli/anthropic_handlers.rs, wired into the router and stats (messages_requestscounter, HTTP + TUI).Realistic Claude model profiles sourced from models.dev / the Anthropic docs, using the real Anthropic API model IDs (
claude-opus-4-8,claude-sonnet-4-6,claude-haiku-4-5,claude-fable-5, the Opus/Sonnet 4.x line, Claude 3.x) with dated-snapshot and-latestaliases.Why
LLMSim already simulates OpenAI and OpenResponses; Anthropic was the documented next provider (
specs/api-endpoints.mdR4). This lets teams load-test and reproduce Claude-integrated apps — including the official Anthropic SDKs (Python, TypeScript, Go) — without API cost or running a model.How
message_start→content_block_start→content_block_delta→content_block_stop→message_delta→message_stop) with explicitevent:lines and no[DONE]sentinel.{"type":"error","error":{...}}) for injected and scripted errors.tool_usesupport (stop_reason: "tool_use",toolu_-prefixed ids).examplesjob; newspecs/anthropic-api.md; README/docs/specs/changelog updated.Risk
#[serde(default)]). No existing endpoint or type changed. Existing tests unaffected.go run,uv/npm installs); they run against a local server on :8080 like the existing example steps.Checklist
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