csvto-mcp

A local MCP server for converting CSV, JSON, and Excel files on your own computer. MCP is a way for an AI agent to use external tools; this server returns file summaries instead of loading entire files into the conversation.

In plain words
What is it for?
Use it to convert local CSV, JSON, and Excel files and inspect concise summaries of their contents.
Why use it?
It keeps the files on the local machine and limits how much data is sent into the model's context. This is useful when working with larger tabular files or data that should not be uploaded.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

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/bishop81/csvto/csvto-mcp
Clone the repo
git clone --depth 1 https://github.com/Bishop81/csvto

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

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

csvto-mcp 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 yesterday.

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 · 10 lines

What it actually says

{
  "csvto-mcp": {
    "command": "npx",
    "args": [
      "-y",
      "csvto-mcp"
    ],
    "env": {}
  }
}
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.

  1. yesterday First seen · 10 lines scan A 1c5b00c125b8

Subscribe to this mod's changes

csvto-mcp is an MCP server published in the GitHub repository Bishop81/csvto (0 stars, last pushed 3d ago), licensed MIT. 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.