fourzerotwo-si Uk Parliament Members API
UK Parliament Members: MPs and peers: search, biographies, contact details, voting records, constituencies and government posts.
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OpenAPI Specification
openapi: 3.2.0
info:
title: Fourzerotwo Si Uk Parliament Members API
version: 1.1.0
contact:
url: https://fourzerotwo.si
description: 'Operations tagged uk-parliament-members across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: uk-parliament-members
description: 'UK Parliament Members: MPs and peers: search, biographies, contact details, voting records, constituencies and government posts.'
paths:
/v1/uk-parliament-members/member:
get:
operationId: uk_parliament_members__member
summary: 'UK Parliament Members: Member'
description: 'Name, party, house, membership status and constituency for one member. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/member
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__member
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/biography:
get:
operationId: uk_parliament_members__biography
summary: 'UK Parliament Members: Biography'
description: 'Government, opposition and committee posts, and party history for a member. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/biography
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__biography
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/contact:
get:
operationId: uk_parliament_members__contact
summary: 'UK Parliament Members: Contact details'
description: 'Parliamentary and constituency contact details for a member. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/contact
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__contact
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/voting:
get:
operationId: uk_parliament_members__voting
summary: 'UK Parliament Members: Voting record'
description: 'A member''s recent votes in divisions. Price: $0.003 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/voting
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
- name: house
in: query
required: true
description: 1 = Commons, 2 = Lords
schema:
type: integer
example: 1
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.003000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__voting
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/synopsis:
get:
operationId: uk_parliament_members__synopsis
summary: 'UK Parliament Members: Synopsis'
description: 'One-paragraph summary of a member''s career. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/synopsis
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.001000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__synopsis
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/registered-interests:
get:
operationId: uk_parliament_members__registered_interests
summary: 'UK Parliament Members: Registered interests'
description: 'A member''s entries in the Register of Members'' Financial Interests. Price: $0.003 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/registered-interests
parameters:
- name: id
in: query
required: true
description: Member id (from member search)
schema:
type: integer
example: 5123
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.003000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__registered-interests
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/constituency-search:
get:
operationId: uk_parliament_members__constituency_search
summary: 'UK Parliament Members: Search constituencies'
description: 'Find Westminster constituencies by name. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/constituency-search
parameters:
- name: searchText
in: query
required: true
description: Constituency name
schema:
type: string
example: East Thanet
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__constituency-search
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/constituency:
get:
operationId: uk_parliament_members__constituency
summary: 'UK Parliament Members: Constituency'
description: 'A constituency and its current representation. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/constituency
parameters:
- name: id
in: query
required: true
description: Constituency id
schema:
type: integer
example: 4031
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__constituency
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/constituency-results:
get:
operationId: uk_parliament_members__constituency_results
summary: 'UK Parliament Members: Election results'
description: 'General election results for a constituency. Price: $0.003 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/constituency-results
parameters:
- name: id
in: query
required: true
description: Constituency id
schema:
type: integer
example: 4031
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.003000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__constituency-results
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/government-posts:
get:
operationId: uk_parliament_members__government_posts
summary: 'UK Parliament Members: Government posts'
description: 'Current ministers and the government posts they hold. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/government-posts
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__government-posts
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/opposition-posts:
get:
operationId: uk_parliament_members__opposition_posts
summary: 'UK Parliament Members: Opposition posts'
description: 'Current shadow ministers and opposition posts. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/opposition-posts
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__opposition-posts
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/search:
get:
operationId: uk_parliament_members__search
summary: 'UK Parliament Members: Search members'
description: 'Find MPs and peers by name, party, house or constituency. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/search
parameters:
- name: name
in: query
required: false
description: Name to search
schema:
type: string
example: Starmer
- name: house
in: query
required: false
description: 1 = Commons, 2 = Lords
schema:
type: integer
example: 1
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__search
servers:
- url: https://fourzerotwo.si
/v1/uk-parliament-members/state-of-parties:
get:
operationId: uk_parliament_members__state_of_parties
summary: 'UK Parliament Members: State of the parties'
description: 'Seats held by each party in a house on a date. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- uk-parliament-members
externalDocs:
url: https://fourzerotwo.si/apis/uk-parliament-members/state-of-parties
parameters:
- name: house
in: query
required: true
description: 1 = Commons, 2 = Lords
schema:
type: integer
example: 1
- name: date
in: query
required: true
description: Date YYYY-MM-DD
schema:
type: string
example: '2026-10-01'
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: uk-parliament-members__state-of-parties
servers:
- url: https://fourzerotwo.si
components:
responses:
PaymentRequired:
description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
headers:
PAYMENT-REQUIRED:
schema:
type: string
description: Base64 JSON x402 v2 PaymentRequired
content:
application/json:
schema:
type: object
properties:
x402Version:
type: integer
error:
type: string
accepts:
type: array
items:
type: object
Error:
description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
content:
application/json:
schema:
type: object
properties:
error:
type: string
charged:
type: boolean
securitySchemes:
freeKey:
type: apiKey
in: header
name: X-API-Key
description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json