UK Parliament Register of Interests MCP Server

Summary

This MCP server provides structured access to the UK Parliament Register of Interests using the Model Context Protocol. It enables AI agents to query interest categories, published registers, and interest records through API-backed tools and data access. Developers can integrate the MCP server via stdio transport to retrieve registers, interests, and PDFs for analysis workflows. The server exposes tools that map directly to the Register of Interests API, optimized for AI agents and developer tooling.

Features

• List interest categories and fetch category details by id.
• Retrieve published registers, register PDFs, and register metadata.
• Query interests with filters for members, dates, and categories.
• Preserve upstream payloads in a standardized envelope for downstream tools and AI agents.

Available Tools

ukpi_categories_list

Return a list of categories interests should be registered under, sorted by category number.

Parameters:

• Skip (number, query) – Records to skip.
• Take (number, query) – Records to return.

ukpi_categories_get_by_id

Return details of an interest category by ID.

Parameters:

• id (number, path) – Category id.

ukpi_interests_list

Return a list of interests that have been published on a register.

Parameters:

• MemberId (number, query)
• CategoryId (number, query)
• PublishedFrom (string, query)
• PublishedTo (string, query)
• RegisteredFrom (string, query)
• RegisteredTo (string, query)
• UpdatedFrom (string, query)
• UpdatedTo (string, query)
• RegisterId (number, query)
• ExpandChildInterests (boolean, query)
• Take (number, query)
• SortOrder (string, query) – PublishingDateDescending | CategoryAscending
• Skip (number, query)

ukpi_interests_csv

Return interests as CSVs packaged in a ZIP file.

Parameters:

• MemberId (number, query)
• CategoryId (number, query)
• PublishedFrom (string, query)
• PublishedTo (string, query)
• RegisteredFrom (string, query)
• RegisteredTo (string, query)
• UpdatedFrom (string, query)
• UpdatedTo (string, query)
• RegisterId (number, query)
• IncludeFieldDescriptions (boolean, query)

ukpi_interests_get_by_id

Return the latest version of an interest which has been published.

Parameters:

• id (number, path) – Interest id.

ukpi_registers_list

Return a list of published versions of registers of interests.

Parameters:

• SessionId (number, query)
• Skip (number, query)
• Take (number, query)

ukpi_registers_get_by_id

Return a published version of a register of interests by ID.

Parameters:

• id (number, path) – Register id.

ukpi_registers_document

Return a published register as a PDF document by ID.

Parameters:

• id (number, path) – Register id.
• type (string, query) – Full | Updated

Example Output

{
  "status": 200,
  "data": {
    "items": [
      {
        "interestId": 9876,
        "memberId": 123,
        "categoryId": 2,
        "publishedDate": "2026-03-01"
      }
    ],
    "totalResults": 1
  },
  "upstream_path": "/api/v1/Interests",
  "retrieved_at": "2026-03-11T10:00:00.000Z"
}

Quick Start

Run the MCP server using npx:

npx -y -p @darkhorseone/mcp-server-uk-parliament-interests mcp-server-uk-parliament-interests

MCP Configuration

Example mcpServers configuration for stdio transport:

{
  "mcpServers": {
    "uk-parliament-interests": {
      "command": "npx",
      "args": ["-y", "-p", "@darkhorseone/mcp-server-uk-parliament-interests", "mcp-server-uk-parliament-interests"],
      "env": {
        "UKPI_API_BASE_URL": "https://interests-api.parliament.uk",
        "UKPI_REQUEST_TIMEOUT_MS": "10000"
      }
    }
  }
}

Example Usage

• List published interests for a member.
• Fetch a specific interest by id.
• Retrieve registers for a parliamentary session.
• Download the latest register PDF.

Use Cases

• AI agents summarizing member interests for transparency reporting.
• Compliance workflows tracking published register updates.
• Research tools aggregating interests by category or date.
• Civic technology platforms monitoring register data changes.

Data Source

UK Parliament Register of Interests API https://interests-api.parliament.uk/

Installation

Run directly using npx:

npx -y -p @darkhorseone/mcp-server-uk-parliament-interests mcp-server-uk-parliament-interests

Or install via pnpm from the repository root:

pnpm install

Run (HTTP proxy server)

Build first, then start:

pnpm --filter @darkhorseone/mcp-server-uk-parliament-interests run build
pnpm --filter @darkhorseone/mcp-server-uk-parliament-interests run start:http

Set a custom HTTP port with the UKPI_HTTP_PORT environment variable (default: 8787):

UKPI_HTTP_PORT=8787 pnpm --filter @darkhorseone/mcp-server-uk-parliament-interests run start:http

Published package command:

npx -y -p @darkhorseone/mcp-server-uk-parliament-interests -- mcp-server-uk-parliament-interests-http

If your shell cannot resolve the bin ("command not found"), run the HTTP entrypoint directly:

npx -y -p @darkhorseone/mcp-server-uk-parliament-interests -- node ./dist/http.js

Health check:

curl http://127.0.0.1:8787/healthz

License

MIT License

MCP Metadata

Protocol: Model Context Protocol Transport: stdio Tools: ukpi_categories_list, ukpi_categories_get_by_id, ukpi_interests_list, ukpi_interests_csv, ukpi_interests_get_by_id, ukpi_registers_list, ukpi_registers_get_by_id, ukpi_registers_document