Data Charter MCP Server

_The governed data plane for AI agents: a local SQL workspace over every file and database you have, federated by DuckDB and governed by a charter.yaml contract - so agents get read-only, PII-masked access to exactly what the contract grants._

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

VERIFIED ACTIVE

LAST COMMIT 2026-08-19 · ★ 11 · #18 OF 151 MAINTAINED DATABASE · VERIFIED 2026-08-25

Apache-2.0 · Python servers · how we verify → /methodology

01 · Install Data Charter

before you install - you'll need

Set OPENAI_BASE_URL, OPENAI_API_KEY before connecting.

Claude Code

claude mcp add datacharter-datacharter -- uvx datacharter

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "datacharter-datacharter": {
      "command": "uvx",
      "args": [
        "datacharter"
      ]
    }
  }
}

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

repo age created 2026-07-24 - young repo, little track record yet

license Apache-2.0 - declared in the repository

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

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

03 · What Data Charter can do

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

Latest releases

v0.42.1 · 2026-08-13

dp --reset --budget N now persists the announced ε cap (it previously cleared the ledger, so the next run reverted to the 5.0 default). Closes the last item from the 0.42.0 audit re-verification. Verified: wheel gate…

v0.42.0 · 2026-08-13

A focused hardening pass from an end-to-end audit + QA sweep of the 0.32–0.41 features. No new surface - the existing features made correct. · Fixed · dp could emit raw PII / row-level records - aggregate detection…

v0.41.0 · 2026-08-13

One command to a governed workspace for your stack. · Added · Template gallery - datacharter init --template <name>. Start from an opinionated, runnable charter with governance already wired: postgres (PII + a row…

04 · Who maintains Data Charter

DataCharter is maintained by datacharter. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/datacharter/datacharter
category: database - ranked #18 of 151 actively-maintained database servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-13)
registry: io.github.datacharter/datacharter (active, first published 2026-07-28 · 62 versions)
packages: pypi:datacharter

06 · Data Charter FAQ

What is Data Charter?

Is Data Charter still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-19 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Data Charter?

Run `uvx datacharter`. The README documents 2 environment variables (OPENAI_BASE_URL, OPENAI_API_KEY) to set first. Set OPENAI_BASE_URL, OPENAI_API_KEY before connecting. You can also paste the ready-made client config above.

Does Data Charter 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 Data Charter

Alternatives to Data Charter

Maintained database servers if Data Charter isn't the fit.

Pairs well with

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

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