A local MCP server for documentation sites built with Verso, a system used for manuals such as the Lean Language Reference. It runs through the `verso-mcp` Python package and uses a site-list environment variable.

Use it when working with the Lean Language Reference, Functional Programming in Lean, or other Verso manual sites.

It gives the coding agent a way to work with selected Verso documentation sites from the local machine.

verso — MCP server for Claude Code and Codex by nvlang: A local MCP server for documentation sites built with…

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add mcp/nvlang/verso-mcp/verso

Clone the repo

git clone --depth 1 https://github.com/nvlang/verso-mcp

Made for: Claude Code, Codex, Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/mcp/nvlang/verso-mcp/verso.svg)](https://agentmods.dev/mcp/nvlang/verso-mcp/verso)

Your own site

<a href="https://agentmods.dev/mcp/nvlang/verso-mcp/verso"><img src="https://agentmods.dev/badge/mcp/nvlang/verso-mcp/verso.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

verso scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

server.json · 11 lines

What it actually says

{
  "verso": {
    "command": "uvx",
    "args": [
      "verso-mcp"
    ],
    "env": {
      "VERSO_MCP_SITES": ""
    }
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

3d ago First seen · 11 lines scan A 22a159907b2a

Subscribe to this mod's changes

verso is an MCP server published in the GitHub repository nvlang/verso-mcp (1 stars, last pushed 1mo ago), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Learning and teaching lean4 mcp

verso

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

Other mcp servers, from other repositories

flashcards

canvas-student-mcp

korea-scholarship-mcp

korean-special-education-curriculum-mcp

purdue-mcp

sefaria