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UK National Archives Discovery

io.github.ianderso/tna-discovery-mcp · v0.1.0

Search the UK National Archives' Discovery catalogue; find Chelsea pensioners' papers in WO 97.

Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add tna-discovery-mcp -e TNA_DISCOVERY_TIMEOUT=<TNA_DISCOVERY_TIMEOUT> -e TNA_DISCOVERY_MIN_INTERVAL=<TNA_DISCOVERY_MIN_INTERVAL> -e TNA_DISCOVERY_DAILY_BUDGET=<TNA_DISCOVERY_DAILY_BUDGET> -e TNA_DISCOVERY_CONTACT=<TNA_DISCOVERY_CONTACT> -e TNA_DISCOVERY_STATE_DIR=<TNA_DISCOVERY_STATE_DIR> -- uvx tna-discovery-mcp==0.1.0
claude_desktop_config.json
{
  "mcpServers": {
    "tna-discovery-mcp": {
      "command": "uvx",
      "args": [
        "tna-discovery-mcp==0.1.0"
      ],
      "env": {
        "TNA_DISCOVERY_TIMEOUT": "<TNA_DISCOVERY_TIMEOUT>",
        "TNA_DISCOVERY_MIN_INTERVAL": "<TNA_DISCOVERY_MIN_INTERVAL>",
        "TNA_DISCOVERY_DAILY_BUDGET": "<TNA_DISCOVERY_DAILY_BUDGET>",
        "TNA_DISCOVERY_CONTACT": "<TNA_DISCOVERY_CONTACT>",
        "TNA_DISCOVERY_STATE_DIR": "<TNA_DISCOVERY_STATE_DIR>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "tna-discovery-mcp": {
      "command": "uvx",
      "args": [
        "tna-discovery-mcp==0.1.0"
      ],
      "env": {
        "TNA_DISCOVERY_TIMEOUT": "<TNA_DISCOVERY_TIMEOUT>",
        "TNA_DISCOVERY_MIN_INTERVAL": "<TNA_DISCOVERY_MIN_INTERVAL>",
        "TNA_DISCOVERY_DAILY_BUDGET": "<TNA_DISCOVERY_DAILY_BUDGET>",
        "TNA_DISCOVERY_CONTACT": "<TNA_DISCOVERY_CONTACT>",
        "TNA_DISCOVERY_STATE_DIR": "<TNA_DISCOVERY_STATE_DIR>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "tna-discovery-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "tna-discovery-mcp==0.1.0"
      ],
      "env": {
        "TNA_DISCOVERY_TIMEOUT": "<TNA_DISCOVERY_TIMEOUT>",
        "TNA_DISCOVERY_MIN_INTERVAL": "<TNA_DISCOVERY_MIN_INTERVAL>",
        "TNA_DISCOVERY_DAILY_BUDGET": "<TNA_DISCOVERY_DAILY_BUDGET>",
        "TNA_DISCOVERY_CONTACT": "<TNA_DISCOVERY_CONTACT>",
        "TNA_DISCOVERY_STATE_DIR": "<TNA_DISCOVERY_STATE_DIR>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
TNA_DISCOVERY_TIMEOUT
Optional		HTTP timeout in seconds for one request.
TNA_DISCOVERY_MIN_INTERVAL
Optional		Least seconds between two requests. Never below 1, TNA's guideline.
TNA_DISCOVERY_DAILY_BUDGET
Optional		Requests a day (UTC) before tools refuse. At most 3000, TNA's guideline.
TNA_DISCOVERY_CONTACT
Optional		An email address or URL appended to the User-Agent, so The National Archives can reach whoever runs the server.
TNA_DISCOVERY_STATE_DIR
Optional		Directory for the day's call count, the one file the server writes (a date and a number).

Details

Package[email protected] (PYPI, stdio)
First published11 Oct 2026
Last updated11 Oct 2026
Registry nameio.github.ianderso/tna-discovery-mcp

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