UK Parliament Members API

Name: UK Parliament Members API API
Brand: UK Parliament Members API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentGovernmentParliamentary Datanone43 EndpointsREST

For Agents

Query UK MPs and Lords by name, constituency, or party; retrieve voting records, committee memberships, interests, and biographical data across 43 endpoints.

Connect the UK Parliament Members API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the UK Parliament Members API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Install Jentic One Beta (Self-Hosted)

Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with UK Parliament Members API API.

Search for constituencies by name or location type

Retrieve constituency details including election results and geometry

Look up Members of Parliament by ID, name, or constituency

Get biographical information and party affiliations for MPs and Lords

GET STARTED

Start building with UK Parliament Members API API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI document for UK Parliament Members API, keeping it validated and agent-ready.

Jentic publishes the only agent-ready OpenAPI specification for the UK Parliament Members API, keeping it validated and up to date. The Members API exposes comprehensive data about UK Members of Parliament and Members of the House of Lords, including biographical information, party affiliations, constituencies, voting records, committee memberships, declared interests, and historical parliamentary roles. It powers research platforms, civic tech applications, and political data analysis across current and historical parliamentary sessions.

Use Cases

Patterns agents use UK Parliament Members API API for, with concrete tasks.

★ Constituency Lookup and Representation

Find MPs representing specific geographic areas by searching constituencies by name or location type. GET /api/Location/Constituency/Search returns matching constituencies, then GET /api/Location/Constituency/{id}/Representations returns current and historical representatives. The API includes constituency boundaries via /Geometry endpoints for mapping applications.

GET /api/Location/Constituency/Search?searchText={area}, then GET /api/Location/Constituency/{id}/Representations to list MPs

Member Biography and Political Profile

Retrieve comprehensive biographical data, party affiliations, and parliamentary roles for MPs and Lords. Search by name via /api/Members/Search, then GET /api/Members/{id} returns full member details including house, party, constituency, and appointment dates. Cross-reference with /api/Members/{id}/Biography for extended background.

GET /api/Members/Search?Name={name}, then GET /api/Members/{id} and /api/Members/{id}/Biography for full profile

Voting Records and Parliamentary Activity

Access voting history, attendance, and parliamentary activity for individual members. The Voting endpoints return division lists and member vote records, while committee endpoints expose membership and roles across parliamentary committees and all-party parliamentary groups (APPGs).

GET /api/Members/{id}/Voting to retrieve voting history, GET /api/Members/{id}/RegisteredInterests for declared interests

AI-Powered Parliamentary Research via Jentic

An AI agent researching UK politics can search for members by party or constituency, retrieve voting patterns, cross-reference committee memberships, and pull declared interests through Jentic without managing pagination or session handling. Jentic resolves intents like 'find all Labour MPs' or 'get voting record for member X' to the correct Members API endpoints.

Search Jentic for 'find MPs by party', load GET /api/Members/Search schema with party filter, and execute

Key Endpoints

43 endpoints — jentic publishes the only agent-ready openapi specification for the uk parliament members api, keeping it validated and up to date.

METHOD

PATH

DESCRIPTION

GET

/api/Members/Search

Search for members by name, party, or house

GET

/api/Members/{id}

Retrieve detailed member information by ID

GET

/api/Location/Constituency/Search

Search constituencies by name

GET

/api/Location/Constituency/{id}/Representations

Get MPs representing a constituency

GET

/api/Location/Constituency/{id}/ElectionResults

Retrieve election results for a constituency

GET

/api/Members/{id}/Biography

Get extended biographical information

GET

/api/LordsInterests/Register

Access Lords register of interests

GET

/api/Members/Search

Search for members by name, party, or house

GET

/api/Members/{id}

Retrieve detailed member information by ID

GET

/api/Location/Constituency/Search

Search constituencies by name

GET

/api/Location/Constituency/{id}/Representations

Get MPs representing a constituency

GET

/api/Location/Constituency/{id}/ElectionResults

Retrieve election results for a constituency

Why though Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

No authentication required — the Members API is open-access. Jentic handles request shaping and response parsing so agents receive structured member data without managing pagination or error states.

Intent-based discovery

Agents search by intent (e.g. 'find MP for Bristol', 'get voting record for member') and Jentic returns the matching Members API endpoint with the request schema pre-shaped for execution.

Time to first call

Direct integration: 2-4 days mapping 43 endpoints, handling pagination, and parsing nested member objects. Through Jentic: under 30 minutes — search by intent, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Complementary

UK Parliament Bills API

Legislative bills and amendments tracking across parliamentary sessions

Use Bills API when tracking legislation progress; use Members API when researching who sponsors or votes on bills

Complementary

UK Parliament Commons Votes API

Detailed Commons division voting data with member-level vote records

Commons Votes API provides granular voting detail; Members API provides member context and biographical data

Complementary

UK Parliament Written Questions API

Parliamentary written questions and ministerial answers

Use Written Questions API to see what questions members have asked; use Members API for member context

FAQs

Specific to using UK Parliament Members API API through Jentic.

Is the UK Parliament Members API free to use?

Yes. The UK Parliament Members API is a public API with no authentication required and no rate limits published. It is maintained by UK Parliament's software engineering team and provides open access to parliamentary member data.

Can I get voting records for individual MPs?

Yes. Use GET /api/Members/{id}/Voting to retrieve voting history for a specific member, or search divisions to see how members voted on particular bills and motions. The API returns structured division voting data.

How do I find the MP for a specific constituency?

Use GET /api/Location/Constituency/Search with the constituency name to get the constituency ID, then GET /api/Location/Constituency/{id}/Representations to retrieve current and historical MPs representing that area.

Does this API include historical member data?

Yes. The Members API includes historical parliamentary data across sessions, including former MPs, previous party affiliations, and historical committee memberships. Filter by date ranges or session to access historical records.

Where does Jentic's OpenAPI spec for the Members API come from?

Jentic imports and validates the official Swagger spec published by UK Parliament at https://members-api.parliament.uk/swagger/v1/swagger.json, converts it to OpenAPI 3.0.3, and keeps it updated so AI agents and developers can call the API via structured tooling.

Can I search for members by party affiliation?

Yes. Use the GET /api/Members/Search endpoint with party filter parameters to retrieve all MPs and Lords from a specific political party. The API supports filtering by house, party, membership status, and name.