mockanything/mock-openai

Mock OpenAI is a local mock implementation of key OpenAI API endpoints for development and testing. It's intended for developers and QA teams building or validating integrations that call OpenAI-style services (clients, tooling, CI tests). Key features: - Implements /v1/chat/completions, /v1/models, /v1/embeddings - Streaming responses via SSE - Tool/function-call simulation and "tool_choice" behavior - Chain-of-thought control via reasoning_effort - Prompt I/O caching simulation - Per-model rate limits (configurable flash/pro tiers) and request body size limits - Embedding options: multiple inputs and custom dimensions - Health check, configurable via env vars (PORT, DEFAULT_MODEL, RATE_LIMITs) Quick start: npm install && npm run dev. Includes build, lint, serve scripts.

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