Architect of the Capitol website screenshot

Architect of the Capitol

The Architect of the Capitol (AOC) serves Congress and the Supreme Court as builder and steward of Capitol Hill's landmark buildings and grounds, preserving historic structures, monuments, art, and gardens across the Capitol campus.

Architect of the Capitol publishes 5 APIs on the APIs.io network, including Accessibility API, Art Collection API, Buildings API, and 2 more. Tagged areas include Federal Government, Capitol Hill, Congress, Historic Preservation, and Government Services.

The Architect of the Capitol catalog on APIs.io includes 1 JSON-LD context and 3 Spectral governance rulesets.

Architect of the Capitol’s developer surface includes developer portal, documentation, engineering blog, and 6 more developer resources.

39.6/100 thin ▬ flat Agent 22/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
5 APIs 5 Features 4 Use Cases
Federal GovernmentCapitol HillCongressHistoric PreservationGovernment Services

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 39.6/100 · thin
Contract Quality 13.5 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 3.8 / 12
Discoverability 6.5 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 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 0 / 4
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APIs 5

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

Architect of the Capitol Accessibility API

The Accessibility API from Architect of the Capitol — 1 operation(s) for accessibility.

Architect of the Capitol Art Collection API

The Art Collection API from Architect of the Capitol — 2 operation(s) for art collection.

Architect of the Capitol Buildings API

The Buildings API from Architect of the Capitol — 2 operation(s) for buildings.

Architect of the Capitol Preservation API

The Preservation API from Architect of the Capitol — 2 operation(s) for preservation.

Architect of the Capitol Visitor Information API

The Visitor Information API from Architect of the Capitol — 1 operation(s) for visitor information.

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

FinOps 1

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

Features 5

Notable capabilities this provider offers.

Capitol Campus Buildings

Information about the US Capitol, House and Senate office buildings, Library of Congress, and Supreme Court.

Art Collections

Access to the Capitol art collection catalog including paintings, sculptures, and historic artifacts.

Historic Preservation Projects

Data on preservation and restoration projects across the Capitol campus.

Accessibility Information

Accessibility features and visitor accommodations across Capitol campus facilities.

Congressional Facilities

Management of congressional office space, hearing rooms, and support facilities.

Semantic Vocabularies 1

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

Aoc Data Api Context

9 classes · 0 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

Architect of the Capitol API Rules

13 rules · 8 errors 5 warnings

SPECTRAL

Architect of the Capitol API Rules

5 rules · 3 warnings 2 info

SPECTRAL

Architect of the Capitol API Rules

8 rules · 1 errors 6 warnings 1 info

SPECTRAL

JSON Schema 9

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

AccessibilityInfo

10 properties

JSON SCHEMA

ArtworkList

4 properties

JSON SCHEMA

Artwork

12 properties

JSON SCHEMA

BuildingList

4 properties

JSON SCHEMA

Building

12 properties

JSON SCHEMA

Coordinates

2 properties

JSON SCHEMA

PreservationProjectList

4 properties

JSON SCHEMA

PreservationProject

12 properties

JSON SCHEMA

VisitorInfo

3 properties

JSON SCHEMA

Scroll for all 9

JSON Structure 9

JSON Structure definitions describing this provider's data shapes.

Aoc Data Api Accessibility Info Structure

10 properties

JSON STRUCTURE

Aoc Data Api Artwork List Structure

4 properties

JSON STRUCTURE

Aoc Data Api Artwork Structure

12 properties

JSON STRUCTURE

Aoc Data Api Building List Structure

4 properties

JSON STRUCTURE

Aoc Data Api Building Structure

12 properties

JSON STRUCTURE

Aoc Data Api Coordinates Structure

2 properties

JSON STRUCTURE

Aoc Data Api Preservation Project Structure

12 properties

JSON STRUCTURE

Aoc Data Api Visitor Info Structure

3 properties

JSON STRUCTURE

Scroll for all 9

Examples 9

Example request and response payloads for these APIs.

Scroll for all 9

Security Posture 1

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

Architect Of The Capitol Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Architect Of The Capitol Agentic Access

8 operations

8 operations · 0 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Visitor Information

Provide Capitol campus visitor information including building access, tours, and facilities.

Art Research

Research the Capitol art collection for educational and historical purposes.

Historic Preservation

Track preservation project status and outcomes for historic Capitol structures.

Congressional Services

Support congressional staff with facilities management and space planning information.

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Access & Security 1

Authentication, authorization, and security posture

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: architect-of-the-capitol
name: Architect of the Capitol
description: The Architect of the Capitol (AOC) serves Congress and the Supreme Court as builder and steward of Capitol Hill's
  landmark buildings and grounds, preserving historic structures, monuments, art, and gardens across the Capitol campus.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/architect-of-the-capitol.png
tags:
- Federal Government
- Capitol Hill
- Congress
- Historic Preservation
- Government Services
url: https://raw.githubusercontent.com/api-evangelist/architect-of-the-capitol/refs/heads/main/apis.yml
created: '2024-11-21'
modified: '2026-04-19'
specificationVersion: '0.19'
apis:
- aid: architect-of-the-capitol:architect-of-the-capitol-accessibility-api
  name: Architect of the Capitol Accessibility API
  description: The Accessibility API from Architect of the Capitol — 1 operation(s) for accessibility.
  humanURL: https://www.aoc.gov/
  tags:
  - Accessibility
  properties:
  - type: OpenAPI
    url: openapi/architect-of-the-capitol-accessibility-api-openapi.yml
  - type: Documentation
    url: https://www.aoc.gov/
  - type: GettingStarted
    url: https://www.aoc.gov/about-us
- aid: architect-of-the-capitol:architect-of-the-capitol-art-collection-api
  name: Architect of the Capitol Art Collection API
  description: The Art Collection API from Architect of the Capitol — 2 operation(s) for art collection.
  humanURL: https://www.aoc.gov/
  tags:
  - Art Collection
  properties:
  - type: OpenAPI
    url: openapi/architect-of-the-capitol-art-collection-api-openapi.yml
  - type: Documentation
    url: https://www.aoc.gov/
  - type: GettingStarted
    url: https://www.aoc.gov/about-us
- aid: architect-of-the-capitol:architect-of-the-capitol-buildings-api
  name: Architect of the Capitol Buildings API
  description: The Buildings API from Architect of the Capitol — 2 operation(s) for buildings.
  humanURL: https://www.aoc.gov/
  tags:
  - Buildings
  properties:
  - type: OpenAPI
    url: openapi/architect-of-the-capitol-buildings-api-openapi.yml
  - type: Documentation
    url: https://www.aoc.gov/
  - type: GettingStarted
    url: https://www.aoc.gov/about-us
- aid: architect-of-the-capitol:architect-of-the-capitol-preservation-api
  name: Architect of the Capitol Preservation API
  description: The Preservation API from Architect of the Capitol — 2 operation(s) for preservation.
  humanURL: https://www.aoc.gov/
  tags:
  - Preservation
  properties:
  - type: OpenAPI
    url: openapi/architect-of-the-capitol-preservation-api-openapi.yml
  - type: Documentation
    url: https://www.aoc.gov/
  - type: GettingStarted
    url: https://www.aoc.gov/about-us
- aid: architect-of-the-capitol:architect-of-the-capitol-visitor-information-api
  name: Architect of the Capitol Visitor Information API
  description: The Visitor Information API from Architect of the Capitol — 1 operation(s) for visitor information.
  humanURL: https://www.aoc.gov/
  tags:
  - Visitor Information
  properties:
  - type: OpenAPI
    url: openapi/architect-of-the-capitol-visitor-information-api-openapi.yml
  - type: Documentation
    url: https://www.aoc.gov/
  - type: GettingStarted
    url: https://www.aoc.gov/about-us
common:
- type: AgenticAccess
  url: agentic-access/architect-of-the-capitol-agentic-access.yml
- type: DomainSecurity
  url: security/architect-of-the-capitol-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/architect-of-the-capitol
- type: Portal
  url: https://www.aoc.gov/
- type: Documentation
  url: https://www.aoc.gov/
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/architect-of-the-capitol/refs/heads/main/rules/aoc-spectral-rules.yml
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/architect-of-the-capitol/refs/heads/main/vocabulary/aoc-vocabulary.yaml
- type: JSONLD
  url: https://raw.githubusercontent.com/api-evangelist/architect-of-the-capitol/refs/heads/main/json-ld/aoc-data-api-context.jsonld
- type: Features
  data:
  - name: Capitol Campus Buildings
    description: Information about the US Capitol, House and Senate office buildings, Library of Congress, and Supreme Court.
  - name: Art Collections
    description: Access to the Capitol art collection catalog including paintings, sculptures, and historic artifacts.
  - name: Historic Preservation Projects
    description: Data on preservation and restoration projects across the Capitol campus.
  - name: Accessibility Information
    description: Accessibility features and visitor accommodations across Capitol campus facilities.
  - name: Congressional Facilities
    description: Management of congressional office space, hearing rooms, and support facilities.
- type: UseCases
  data:
  - name: Visitor Information
    description: Provide Capitol campus visitor information including building access, tours, and facilities.
  - name: Art Research
    description: Research the Capitol art collection for educational and historical purposes.
  - name: Historic Preservation
    description: Track preservation project status and outcomes for historic Capitol structures.
  - name: Congressional Services
    description: Support congressional staff with facilities management and space planning information.
- type: Blog
  url: https://www.aoc.gov/explore-capitol-campus/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com