US House of Representatives

The United States House of Representatives is one of the two chambers of the United States Congress, with the other being the Senate. Its main function is to pass federal legislation, which must then be approved by the Senate before it can become law. The House also has the power to impeach government officials, including the President, and to initiate revenue-related bills. Congressional data is made available through the Congress.gov API, a REST API maintained by the Library of Congress that provides access to bills, members, committees, amendments, nominations, and treaties.

US House of Representatives publishes 6 API contracts indexed on the APIs.io network, including Bills API, Committees API, Members API, and 3 more. Tagged areas include Federal Government, Legislation, Congress, Legislative, and Bills.

The US House of Representatives catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

US House of Representatives’ developer surface includes authentication and 8 more developer resources.

📡 Profile data on GitHub

30.7/100 thin ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Federal Government Legislation Congress Legislative Bills Members Committees

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Legislative & Regulatory Drafting Management

BC-3210

Bills

GET /bill GET /bill/{congress} GET /bill/{congress}/{type} GET /bill/{congress}/{type}/{number}

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 30.7/100 · thin

Contract Quality 11.1 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 1.3 / 17

Operational Transparency 2.6 / 11

Contract Governance 1.4 / 10

Discoverability 4.9 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Contract Quality scores 52.1 — up to +12.0 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/us-house-of-representatives/apis.yml: open an issue on github.com/api-evangelist/us-house-of-representatives to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
US Federal API Programs (api.data.gov, Login.gov, GSA MAS, FedRAMP)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

ProPublica Congress API

ProPublica's Congress API provides access to detailed congressional data including member profiles, voting records, bill sponsorship, and committee activity. This third-party AP...

US House of Representatives Bills API

Legislative bills and resolutions

US House of Representatives Committees API

Congressional committees

US House of Representatives Members API

Members of Congress

US House of Representatives Nominations API

Presidential nominations

US House of Representatives Treaties API

International treaties

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Congress.gov API

OPEN COLLECTION

Congress.gov Bills API

OPEN COLLECTION

Congress.gov Bills Committees API

OPEN COLLECTION

Congress.gov Bills Members API

OPEN COLLECTION

Congress.gov Bills Nominations API

OPEN COLLECTION

Congress.gov Bills Treaties API

OPEN COLLECTION

US House of Representatives API pricing

Not yet checked against US House of Representatives's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against US House of Representatives's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Us House Of Representatives Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Us House Of Representatives Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

US House of Representatives

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Us House Of Representatives Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Us House Of Representatives Context

26 classes · 5 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

US House of Representatives — congress gov api rules

11 rules · 1 errors 6 warnings 4 info

SPECTRAL

US House of Representatives — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Congress.gov Bill

14 properties

JSON SCHEMA

Congress.gov Member

18 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Congress Gov Bill Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Congress Gov List Bills Example

3 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Us House Of Representatives Authentication

apiKey · 1 scheme

SECURITY

Us House Of Representatives Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Us House Of Representatives Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Us House Of Representatives Agentic Access

19 operations

19 operations · 0 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

LinkedIn

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: us-house-of-representatives
url: https://raw.githubusercontent.com/api-evangelist/us-house-of-representatives/refs/heads/main/apis.yml
apis:
- aid: us-house-of-representatives:propublica-congress-api
  name: ProPublica Congress API
  tags:
  - Legislation
  - Congress
  - Voting Records
  - Campaign Finance
  humanURL: https://projects.propublica.org/api-docs/congress-api/
  properties:
  - url: https://projects.propublica.org/api-docs/congress-api/
    type: Documentation
  description: ProPublica's Congress API provides access to detailed congressional data including member profiles, voting
    records, bill sponsorship, and committee activity. This third-party API aggregates and enriches congressional data from
    multiple public sources.
- aid: us-house-of-representatives:us-house-of-representatives-bills-api
  name: US House of Representatives Bills API
  description: Legislative bills and resolutions
  humanURL: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  tags:
  - Bills
  properties:
  - type: OpenAPI
    url: openapi/us-house-of-representatives-bills-api-openapi.yml
  - type: Documentation
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  - type: GitHub
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: BaseURL
    url: https://api.congress.gov/
- aid: us-house-of-representatives:us-house-of-representatives-committees-api
  name: US House of Representatives Committees API
  description: Congressional committees
  humanURL: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  tags:
  - Committees
  properties:
  - type: OpenAPI
    url: openapi/us-house-of-representatives-committees-api-openapi.yml
  - type: Documentation
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  - type: GitHub
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: BaseURL
    url: https://api.congress.gov/
- aid: us-house-of-representatives:us-house-of-representatives-members-api
  name: US House of Representatives Members API
  description: Members of Congress
  humanURL: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/us-house-of-representatives-members-api-openapi.yml
  - type: Documentation
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  - type: GitHub
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: BaseURL
    url: https://api.congress.gov/
- aid: us-house-of-representatives:us-house-of-representatives-nominations-api
  name: US House of Representatives Nominations API
  description: Presidential nominations
  humanURL: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  tags:
  - Nominations
  properties:
  - type: OpenAPI
    url: openapi/us-house-of-representatives-nominations-api-openapi.yml
  - type: Documentation
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  - type: GitHub
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: BaseURL
    url: https://api.congress.gov/
- aid: us-house-of-representatives:us-house-of-representatives-treaties-api
  name: US House of Representatives Treaties API
  description: International treaties
  humanURL: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  tags:
  - Treaties
  properties:
  - type: OpenAPI
    url: openapi/us-house-of-representatives-treaties-api-openapi.yml
  - type: Documentation
    url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
  - type: GitHub
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: BaseURL
    url: https://api.congress.gov/
name: US House of Representatives
tags:
- Federal Government
- Legislation
- Congress
- Legislative
- Bills
- Members
- Committees
tags_raw:
- Federal Government
- Legislation
- Congress
- Legislative Data
- Bills
- Members
- Committees
- Federal-Government
kind: contract
deliveryModel:
  model: unknown
  license_evidence:
    not_product:
    - libraryofcongress/api.congress.gov
  open_source: unknown
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/us-house-of-representatives.png
access: 3rd-Party
created: '2024-12-03'
modified: '2026-05-19'
position: Consuming
description: The United States House of Representatives is one of the two chambers of the United States Congress, with the
  other being the Senate. Its main function is to pass federal legislation, which must then be approved by the Senate before
  it can become law. The House also has the power to impeach government officials, including the President, and to initiate
  revenue-related bills. Congressional data is made available through the Congress.gov API, a REST API maintained by the Library
  of Congress that provides access to bills, members, committees, amendments, nominations, and treaties.
common:
- type: Plans
  url: plans/us-house-of-representatives-plans-pricing.yml
- type: RateLimits
  url: rate-limits/us-house-of-representatives-rate-limits.yml
- type: FinOps
  url: finops/us-house-of-representatives-finops.yml
- type: CapabilityMap
  url: capabilities/us-house-of-representatives-capability-edges.yml
  name: US House of Representatives Business Capability Map
- type: AgenticAccess
  url: agentic-access/us-house-of-representatives-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/us-house-of-representatives-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/us-house-of-representatives-domain-security.yml
- type: Authentication
  url: authentication/us-house-of-representatives-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/u-s-house-of-representatives
- type: Integrations
  url: https://www.loc.gov/apps
integrations:
- name: Facebook
- name: Copy Link
- name: Library of Congress Facebook
- name: Library of Congress X
- name: Library of Congress YouTube
- name: Library of Congress Pinterest
- name: Library of Congress Flickr
- name: Library of Congress Instagram
- name: Library of Congress iTunesU
- name: Library of Congress LinkedIn
- name: Email
- name: Congress.gov
- name: United States Copyright Office
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
specificationVersion: '0.23'

US House of Representatives API — frequently asked questions

Does US House of Representatives have an API?

Yes. APIs.io lists 6 APIs from US House of Representatives, including ProPublica Congress API, US House of Representatives Bills API and US House of Representatives Committees API, and 3 more.

Is there an OpenAPI specification for the US House of Representatives API?

Yes. APIs.io indexes 5 OpenAPI specifications for US House of Representatives, each linked for download from this page.

How do I authenticate with the US House of Representatives API?

US House of Representatives uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Us House Of Representatives Authentication.

How much does the US House of Representatives API cost?

APIs.io lists 3 pricing plans for US House of Representatives, with each plan's price, limits and inclusions under Pricing on this page.

Is the US House of Representatives API ready for AI agents?

US House of Representatives has a Kin Score of 30.7 out of 100 (thin) and an Agent Readiness score of 22.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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