How do I install the datacharter mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `OPENAI_BASE_URL`, `OPENAI_API_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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DataCharter MCP Server

Local-first, contract-governed data explorer with read-only, PII-masked query tools for AI agents.

Local serverstdioPython

What is the DataCharter MCP Server?

Local-first, contract-governed data explorer with read-only, PII-masked query tools for AI agents.

What you get

Beyond local federation and governed agent access, you also get:

Your contracts are the catalog. — charter.yaml describes sources, tables,
Real federation, not just a shared connection. — Filters and projections are
Local-first. — One process, your machine, no cloud dependency. The optional
The workspace is a directory. — charter.yaml + queries/*.sql +

What the assistant can call

Once DataCharter is connected, these are the calls the assistant has available:

Clean — room math, one YAML line.** Policies like aggregates only and groups of at least 10 are enforced by query
Local — first.** One process, your machine, no cloud dependency. The optional

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

How to install the DataCharter MCP Server

{
  "mcpServers": {
    "datacharter": {
      "command": "uvx",
      "args": ["datacharter"],
      "env": {
        "OPENAI_BASE_URL": "your-value",
        "OPENAI_API_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

Variable	Description	Required
OPENAI_BASE_URL	Endpoint or connection string the server talks to.	Yes
OPENAI_API_KEY	Credential the server authenticates with.	Yes

Example prompts to try

“Use DataCharter to Clean.”
“Use DataCharter to Local.”

Frequently asked questions

Local-first, contract-governed data explorer with read-only, PII-masked query tools for AI agents. Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.