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For Developers

98+ products you can build on Lumin

217 tools behind one endpoint, built for agents to call. Every one returns the rule it applied and where that rule comes from, so your product can show the user why. The catalog writes out the tool chain for 98 of them. Nine are already built, open source, MIT.

Wire it up

1

Get a key

Sign in with your email address and the six digit code we send you. No password to create. Up to 5 keys on an account, each named, each revocable.

developer.lumin.guru
2

Point a client at the server

The /mcp endpoint takes either credential. Service to service, send the key. In a desktop client, sign in instead.

Use this service to service, with a key from your developer portal.

claude mcp add --transport http lumin-kp https://mcp.lumin.guru/mcp \ --header "Authorization: Bearer mcp_yourkey..."
3

Working in Claude Code? Install the plugin

The plugin adds the tools, the reading method, and a command for each topic. It holds every reading to full depth.

/plugin marketplace add https://www.lumin.guru/plugin/marketplace.json
/plugin install lumin@lumin

The plugin signs in, it does not take a key. It connects to /mcp/auth, which accepts nothing else, so the key from step 1 goes unused here. Claude Code prompts you, then a browser tab takes your email address and the six digit code.

300 tool calls free every month, no card. Top up from $1 for 400 calls. Failed calls are never charged. See pricing.

Get started

Ready to build? Start from a working app.

Nine open source examples, one endpoint each, and the tool chain printed beside every use case.