Verify LLM API gateway authenticity. Local MCP server, your API key stays on your machine.
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Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"api-key-scanner-mcp","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
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# api-key-scanner Verify whether an LLM API gateway (or 中转站 / third-party proxy) is actually serving the model it claims — without ever handing your API key to anyone else. **[简体中文](./README.zh-CN.md)** ## How it works You point the tool at an endpoint, tell it what model the gateway claims to serve, and name the environment variable where your gateway API key lives. It runs a small probe set against the endpoint, compares the responses to publicly-signed reference fingerprints of real vendor models, and returns a trust score. Everything runs on your machine. Your API key is read from a local env var (never accepted in chat, never sent anywhere except the gateway you named). Reference fingerprints are downloaded from our GitHub Releases and Sigstore-verified before use — if the signature doesn't match the identity of the GitHub Actions workflow that produced them, the tool refuses the data and returns `inconclusive`. The tool ships two pieces: an MCP server (on PyPI) and a skill that teaches the agent when and how to call the server's `verify_gateway` tool. Both pieces are platform-neutral; installation just differs per host. ## Prerequisites The MCP server runs through [`uvx`](https://docs.astral.sh/uv/), which fetches and isolates the Python package on every launch. If you don't already have `uv`, install it once: ```bash # macOS brew install uv # macOS / Linux (no Homebrew) curl -LsSf https://astral.sh/uv/install.sh | sh # Windows (PowerShell) irm https://astral.sh/uv/install.ps1 | iex ``` After install, `uvx --version` should print a version. Restart your terminal (or your MCP client) if it doesn't show up yet. ## Installation ### Claude Code In Claude Code: ``` /plugin marketplace add zhonghp/api-key-scanner /plugin install api-key-scanner@zhonghp-api-key-scanner ``` That's everything — the plugin bundles the MCP server config and the skill. The server auto-downloads signed reference fingerprints on first use; no manual bootstrap. ### OpenCla…
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