Lean 4 MCP server: compile, prove theorems, and formalize math with Mathlib.
Most developer tooling work still happens through a UI a human drives. Prover MCP server moves it into the conversation instead. Lean 4 MCP server: compile, prove theorems, and formalize math with Mathlib.
Add to your MCP client (e.g. Claude Desktop claude_desktop_config.json):
Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.
The server publishes 1 tool. What each one is for:
Poll — All submit tools are asynchronous — they return a job_id immediately. Poll with lean4_get_job_status(job_id) until status is completed or failedPlenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Prover's toolset — Poll — is a fair guide to whether it matches your workflow. It is maintained by com.axiomatic-ai; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Poll | All submit tools are asynchronous — they return a job_id immediately. Poll with lean4_get_job_status(job_id) until status is completed or failed. |
{
"mcpServers": {
"ax-prover": {
"type": "streamable-http",
"url": "https://prover.axiomatic-ai.com/mcp/"
}
}
}Configuration as documented by the project. Restart the client after saving.
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