UK Parliament Members MCP Server

Summary

This MCP server provides structured access to UK Parliament Members data using the Model Context Protocol. It enables AI agents to query members, constituencies, parties, posts, and reference data through API-backed tools and data access. Developers can integrate the MCP server via stdio transport to retrieve member profiles, biographies, votes, and related metadata. The server exposes tools that map directly to the Members API for consistent automation and AI agents workflows.

Features

• Search current and historical members with filters for house, party, and constituency.
• Retrieve member profiles, biographies, contact details, votes, and written questions.
• Access constituency data, election results, and geographic metadata.
• Query party, post, and reference datasets for policy and department lookups.

Available Tools

ukp_location_browse

Returns a list of locations, both parent and child.

Parameters:

• locationType (number, path)
• locationName (string, path)

ukp_location_constituency_search

Returns a list of constituencies.

Parameters:

• searchText (string, query)
• skip (number, query)
• take (number, query)

ukp_location_constituency

Returns a constituency by ID.

Parameters:

• id (number, path)

ukp_location_constituency_synopsis

Returns a synopsis by constituency ID.

Parameters:

• id (number, path)

ukp_location_constituency_representations

Returns a list of representations by constituency ID.

Parameters:

• id (number, path)

ukp_location_constituency_geometry

Returns geometry by constituency ID.

Parameters:

• id (number, path)

ukp_location_constituency_election_results

Returns a list of election results by constituency ID.

Parameters:

• id (number, path)

ukp_location_constituency_election_result

Returns an election result by constituency and election id.

Parameters:

• id (number, path)
• electionId (number, path)

ukp_location_constituency_election_result_latest

Returns latest election result by constituency id.

Parameters:

• id (number, path)

ukp_lords_interests_register

Returns a list of registered interests.

Parameters:

• searchTerm (string, query)
• page (number, query)
• includeDeleted (boolean, query)

ukp_lords_interests_staff

Returns a list of staff.

Parameters:

• searchTerm (string, query)
• page (number, query)

ukp_members_search

Returns a list of current members of the Commons or Lords.

Parameters:

• Name (string, query)
• Location (string, query)
• PostTitle (string, query)
• PartyId (number, query)
• House (number, query)
• ConstituencyId (number, query)
• NameStartsWith (string, query)
• Gender (string, query)
• MembershipStartedSince (string, query)
• MembershipEnded.MembershipEndedSince (string, query)
• MembershipEnded.MembershipEndReasonIds (array:number, query)
• MembershipEnded.MembershipEndResignedTypes (array:number, query)
• MembershipEnded.MembershipEndEndDates (array:string, query)
• MembershipEnded.MembershipEndResignedDates (array:string, query)
• MembershipEnded.MembershipEndDeathDates (array:string, query)
• MembershipEnded.MembershipEndDisqualifiedDates (array:string, query)
• MembershipEnded.MembershipEndEndReasonIds (array:number, query)
• MembershipEnded.MembershipEndOtherReasonIds (array:number, query)
• MembershipEnded.MembershipEndParliamentDissolvedDates (array:string, query)
• Skip (number, query)
• Take (number, query)

ukp_members_search_historical

Returns a list of members of the Commons or Lords.

Parameters:

• name (string, query)
• dateToSearchFor (string, query)
• skip (number, query)
• take (number, query)

ukp_members_get_by_id

Return member by ID.

Parameters:

• id (number, path)
• detailsForDate (string, query)

ukp_members_biography

Return biography of member by ID.

Parameters:

• id (number, path)

ukp_members_contact

Return list of contact details of member by ID.

Parameters:

• id (number, path)

ukp_members_contribution_summary

Return contribution summary of member by ID.

Parameters:

• id (number, path)
• page (number, query)

ukp_members_edms

Return list of early day motions of member by ID.

Parameters:

• id (number, path)
• page (number, query)

ukp_members_experience

Return experience of member by ID.

Parameters:

• id (number, path)

ukp_members_focus

Return list of areas of focus of member by ID.

Parameters:

• id (number, path)

ukp_members_history

Return members by ID with list of their historical names, parties and memberships.

Parameters:

• ids (array:number, query)

ukp_members_latest_election_result

Return latest election result of member by ID.

Parameters:

• id (number, path)

ukp_members_portrait

Return portrait of member by ID.

Parameters:

• id (number, path)
• cropType (number, query)
• webVersion (boolean, query)

ukp_members_portrait_url

Return portrait url of member by ID.

Parameters:

• id (number, path)

ukp_members_registered_interests

Return list of registered interests of member by ID.

Parameters:

• id (number, path)
• house (number, query)

ukp_members_staff

Return list of staff of member by ID.

Parameters:

• id (number, path)

ukp_members_synopsis

Return synopsis of member by ID.

Parameters:

• id (number, path)

ukp_members_thumbnail

Return thumbnail of member by ID.

Parameters:

• id (number, path)

ukp_members_thumbnail_url

Return thumbnail url of member by ID.

Parameters:

• id (number, path)

ukp_members_voting

Return list of votes by member by ID.

Parameters:

• id (number, path)
• house (number, query)
• page (number, query)

ukp_members_written_questions

Return list of written questions by member by ID.

Parameters:

• id (number, path)
• page (number, query)

ukp_parties_state_of_the_parties

Returns current state of parties.

Parameters:

• house (number, path)
• forDate (string, path)

ukp_parties_lords_by_type

Returns the composition of the House of Lords by peerage type.

Parameters:

• forDate (string, path)

ukp_parties_get_active

Returns a list of current parties with at least one active member.

Parameters:

• house (number, path)

ukp_posts_government_posts

Returns a list of government posts.

Parameters:

• departmentId (number, query)

ukp_posts_opposition_posts

Returns a list of opposition posts.

Parameters:

• departmentId (number, query)

ukp_posts_spokespersons

Returns a list of spokespersons.

Parameters:

• partyId (number, query)

ukp_posts_departments

Returns a list of departments.

Parameters:

• type (number, path)

ukp_posts_speaker_and_deputies

Returns a list containing the speaker and deputy speakers.

Parameters:

• forDate (string, path)

ukp_reference_policy_interests

Returns a list of policy interest.

ukp_reference_departments

Returns a list of departments.

Parameters:

• id (number, query)
• nameContains (string, query)

ukp_reference_answering_bodies

Returns a list of answering bodies.

Parameters:

• id (number, query)
• nameContains (string, query)

ukp_reference_departments_logo

Returns department logo.

Parameters:

• id (number, path)

Example Output

{
  "status": 200,
  "data": {
    "items": [
      {
        "memberId": 1,
        "name": "Jane Doe",
        "house": "Commons",
        "party": "Example Party"
      }
    ],
    "totalResults": 1
  },
  "upstream_path": "/api/Members/Search",
  "retrieved_at": "2026-03-11T10:00:00.000Z"
}

Quick Start

Run the MCP server using npx:

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

MCP Configuration

Example mcpServers configuration for stdio transport:

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

Example Usage

• Search current members by name and constituency.
• Fetch a member biography and contact details by ID.
• Retrieve constituency election results and geometry.
• List active parties and government posts.

Use Cases

• AI agents answering questions about MPs and Lords with authoritative data.
• Research tools tracking member roles, voting, and parliamentary history.
• Civic technology platforms enriching datasets with constituency metadata.
• Automation workflows collecting reference data for policy analysis.

Data Source

UK Parliament Members API https://members-api.parliament.uk/index.html

Installation

Run directly using npx:

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

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

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

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

Published package command:

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

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

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

Health check:

curl http://127.0.0.1:8787/healthz

Proxy pattern:

GET /proxy/<upstream-path>?<query>

Example:

curl "http://127.0.0.1:8787/proxy/api/Members/History?ids=1&ids=2"

License

MIT License

MCP Metadata

Protocol: Model Context Protocol Transport: stdio Tools: ukp_location_browse, ukp_location_constituency_search, ukp_location_constituency, ukp_location_constituency_synopsis, ukp_location_constituency_representations, ukp_location_constituency_geometry, ukp_location_constituency_election_results, ukp_location_constituency_election_result, ukp_location_constituency_election_result_latest, ukp_lords_interests_register, ukp_lords_interests_staff, ukp_members_search, ukp_members_search_historical, ukp_members_get_by_id, ukp_members_biography, ukp_members_contact, ukp_members_contribution_summary, ukp_members_edms, ukp_members_experience, ukp_members_focus, ukp_members_history, ukp_members_latest_election_result, ukp_members_portrait, ukp_members_portrait_url, ukp_members_registered_interests, ukp_members_staff, ukp_members_synopsis, ukp_members_thumbnail, ukp_members_thumbnail_url, ukp_members_voting, ukp_members_written_questions, ukp_parties_state_of_the_parties, ukp_parties_lords_by_type, ukp_parties_get_active, ukp_posts_government_posts, ukp_posts_opposition_posts, ukp_posts_spokespersons, ukp_posts_departments, ukp_posts_speaker_and_deputies, ukp_reference_policy_interests, ukp_reference_departments, ukp_reference_answering_bodies, ukp_reference_departments_logo