How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
US House of Representatives

US House of Representatives Members API

Members of Congress

Documentation Provider Profile APIs.io OpenAPI GitHub

US House of Representatives Members API is one of 6 APIs that US House of Representatives publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Members. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 5 operations across 5 paths, and defines 5 schemas. It is described by OpenAPI 3.0.3, at version v3.

Requests are made against a single base URL, https://api.congress.gov/v3.

5 operations 5 paths 5 schemas 5 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.3
API Version
v3
Server
https://api.congress.gov/v3
Authentication
API Key
Contact
https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
License
US Government Work
Resource Areas
1

Authentication & Security 1

US House of Representatives Members API declares 1 security scheme for authenticating requests. An API key is passed in the query as api_key (ApiKeyQuery). By default, every request must be authenticated.

  • ApiKeyQuery — API key required for all requests. Register at https://api.congress.gov/sign-up to obtain a key.

Paths & Operations 5

Across 5 paths, the API surfaces 5 operations — 5 GET. Each is listed below with its method, path, parameters, and response codes.

Members 5

Members of Congress

GET
/member
List Members of Congress
listMembers 7 params → 200
GET
/member/{bioguideId}
Get Member Details
getMember 3 params → 200404
GET
/member/congress/{congress}
List Members by Congress
listMembersByCongress 6 params → 200
GET
/member/{bioguideId}/sponsored-legislation
Get Member Sponsored Legislation
getMemberSponsoredLegislation 5 params → 200
GET
/member/{bioguideId}/cosponsored-legislation
Get Member Cosponsored Legislation
getMemberCosponsoredLegislation 5 params → 200

Schemas 5

The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are MemberSummary (8 properties), RequestInfo (5 properties), Pagination (3 properties), MemberListResponse (3 properties). Each schema is shown below with its type and property counts.

MemberDetailResponse
object
2 properties
MemberListResponse
object
3 properties
MemberSummary
object
8 properties
RequestInfo
object
5 properties
Pagination
object
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

us-house-of-representatives-members-api-openapi.yml Raw ↑

Other APIs US House of Representatives publishes across the network.

ProPublica Congress API
AE Profile APIs.io
US House of Representatives Bills API
AE Profile APIs.io
US House of Representatives Committees API
AE Profile APIs.io
US House of Representatives Nominations API
AE Profile APIs.io
US House of Representatives Treaties API
AE Profile APIs.io
#Members
← Back to U APIs
API Details
ID
us-house-of-representatives:us-house-of-representatives-members-api
Server
https://api.congress.gov/v3
Docs
https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
Provider
US House of Representatives
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=us-house-of-representatives-members-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/us-house-of-representatives-members-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

This is an independent, third-party profile of US House of Representatives Members API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.