Am I OpenAI Compatible: Tool & Docs for Unified API Signatures

A Reddit user has released a tool and documentation page called 'Am I OpenAI compatible' that maps which major open-source AI projects adhere to OpenAI's API signatures. The project was motivated by inconsistencies between engines like vLLM and llama.cpp, which often implement the same endpoint differently.
Key Details
The tool catalogs both official and unofficial API signatures for each project. For models where OpenAI compatibility gaps exist, it introduces 'ht-compatibility' as an inherited standard. The developer plans to add optional Anthropic-compatible signatures and other extensions.
Two resources are available:
- GitHub repository: heiervang-technologies/am-i-openai-compatible
- Documentation site: ReadTheDocs
The developer notes the tool is useful for plugging LLM and other AI endpoints into apps, or for building proxy/middleware layers. Developers creating their own API interfaces will also benefit from the documented signatures, making agent integration easier.
Who It's For
Developers working with multiple open-source inference engines who need a reliable reference for API compatibility, or anyone building middleware or agent systems that consume multiple backends.
📖 Read the full source: r/LocalLLaMA
👀 See Also

Claude Usage Monitor: Free macOS Menu Bar App for Tracking Claude.ai Limits
A developer built Claude Usage Monitor, a free macOS menu bar app that displays Claude.ai usage with color-coded icons, live counters, and reset timers. The app reads directly from Claude.ai sessions without requiring an API key.

Quell Proxy Fixes Claude Code Scroll-Jumping on Windows
Quell is a Rust proxy that sits between your terminal and Claude Code, stripping clear-screen sequences that cause scroll position resets during long responses. It also adds Shift+Enter for newlines, security filtering, and full Unicode support.

Open-source Claude Code skill /unzuck curates social media feeds into dashboard
A free, open-source Claude Code skill called /unzuck scans feeds across Hacker News, Reddit, LinkedIn, YouTube, Twitter/X, Instagram, and Facebook in parallel using browser automation, scores items against user interest profiles, and generates interactive HTML dashboards.

Crit: Local-first, single-binary CLI for reviewing agent plans and diffs
Crit is a single-binary CLI that opens files or diffs in a browser with a GitHub-inspired UI, allowing multi-round feedback loops with AI coding agents — no account needed.