jDataMunch MCP

jDataMunch is an MCP server for coding agents and analysts that answers questions about CSV, Excel, Parquet, and JSONL files without pasting the rows into the context window. It runs locally over stdio via the published package.

People connecting data & analytics tools to Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-08-25 · ★ 81 · #7 OF 75 MAINTAINED DATA & ANALYTICS · VERIFIED 2026-08-25

NOASSERTION · Python servers · how we verify → /methodology

01 · Install jDataMunch MCP

before you install - you'll need

Set JDATAMUNCH_SHARE_SAVINGS before connecting.

Claude Code

claude mcp add jgravelle-jdatamunch-mcp -- uvx jdatamunch-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "jgravelle-jdatamunch-mcp": {
      "command": "uvx",
      "args": [
        "jdatamunch-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

pypi package jdatamunch-mcp - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.jgravelle is GitHub-verified and matches the repo owner

03 · What jDataMunch MCP can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Limitations (from the README)

- Savings scale with file size. On a small spreadsheet the difference is negligible; the benchmark figures come from a 255 MB file. - Sampled statistics are sampled. Distribution and correlation figures on very large files carry a stated error bound rather than being exact. - Excel and Parquet need optional extras, which pull additional dependencies. - A default describe_column will not be labelled offloadable. jData

Latest releases

v1.31.12 · 2026-08-25

v1.31.12 - the sdist credential guard · Bumps the four pin sites and closes the [Unreleased] block for the · tests/test_build.py port. Test-only; no runtime behaviour changes. · 849 passed, 11 skipped, 0 failed. ruff…

v1.31.11 · 2026-08-25

v1.31.11 - two guards in the absence path, one tripped by our own write · Bumps the four pin sites and closes the [Unreleased] block for the two verdict · fixes on this branch. · 841 passed, 11 skipped, 0 failed. ruff…

v1.31.10 · 2026-08-24

v1.31.10 - a skipped module hid how many tests it held · --- · Published to PyPI separately (manual step). If this release is newer than the latest version on PyPI, the PyPI upload has not happened yet.

04 · Who maintains jDataMunch MCP

jDataMunch MCP is maintained by jgravelle. We track 3 MCP servers from jgravelle - 3 actively maintained, 2,898 combined GitHub stars, oldest repo from Feb 2026. Full record: all servers from jgravelle.

05 · Facts

repository: github.com/jgravelle/jdatamunch-mcp
category: data & analytics - ranked #7 of 75 actively-maintained data & analytics servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-25)
registry: io.github.jgravelle/jdatamunch-mcp (active, first published 2026-08-06 · 8 versions)
packages: pypi:jdatamunch-mcp

06 · jDataMunch MCP FAQ

What is jDataMunch MCP?

Is jDataMunch MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-25 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install jDataMunch MCP?

Run `uvx jdatamunch-mcp`. The README documents one environment variable (JDATAMUNCH_SHARE_SAVINGS) to set first. Set JDATAMUNCH_SHARE_SAVINGS before connecting. You can also paste the ready-made client config above.

Does jDataMunch MCP run locally?

Yes - it's a stdio server: it runs on your machine (via uvx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to jDataMunch MCP

Alternatives to jDataMunch MCP

Maintained data & analytics servers if jDataMunch MCP isn't the fit.

Pairs well with

Servers that cover what jDataMunch MCP doesn't - only shown when the pairing reason fits the companion.

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