Arc Prize Foundation website screenshot

Arc Prize Foundation

The ARC Prize Foundation is a nonprofit advancing open artificial general intelligence research through scientifically rigorous benchmarks and competitive prizes. Its ARC-AGI benchmark series measures fluid intelligence on tasks that are easy for humans but hard for AI, and its ARC-AGI-3 Interactive Reasoning Benchmark exposes a public REST API (three.arcprize.org) plus an open-source Python toolkit and SDK for building agents that play, score, and generalize across novel game environments. The Foundation runs the ARC Prize competitions in partnership with Kaggle, with participation from OpenAI, Google, xAI, Anthropic, and NIST.

Arc Prize Foundation publishes 3 APIs on the APIs.io network: Commands API, Games API, and Scorecards API. Tagged areas include Company, Artificial Intelligence, AGI, Benchmarks, and Agents.

Arc Prize Foundation’s developer surface includes authentication, changelog, documentation, API reference, quickstart, engineering blog, signup flow, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
38.8/100 thin ▬ flat Agent 24/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
CompanyArtificial IntelligenceAGIBenchmarksAgentsReasoningMachine-LearningNon-Profit

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 38.8/100 · thin
Contract Quality 12.7 / 23
Developer Ergonomics 11.0 / 18
Access Clarity 2.4 / 18
Operational Transparency 2.2 / 12
Contract Governance 0.5 / 11
Discoverability 6.8 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 24/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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 github.com/api-evangelist/arc-prize-foundation: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 3

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

Arc Prize Foundation Commands API

The Commands API from Arc Prize Foundation — 8 operation(s) for commands.

Arc Prize Foundation Games API

The Games API from Arc Prize Foundation — 1 operation(s) for games.

Arc Prize Foundation Scorecards API

The Scorecards API from Arc Prize Foundation — 4 operation(s) for scorecards.

Open Collections 4

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

API Collection

OPEN COLLECTION

ARC‑AGI‑3 REST Commands API

OPEN COLLECTION

ARC‑AGI‑3 REST Commands Games API

OPEN COLLECTION

ARC‑AGI‑3 REST Commands Scorecards API

OPEN COLLECTION

Security Posture 2

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

Arc Prize Foundation Authentication

apiKey · 1 scheme

SECURITY

Arc Prize Foundation Domain Security

TLSv1.2 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 Quickstart
Quickstart
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate
X-MCPServerCandidate
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog
ErrorCatalog
 Conventions
Conventions
 DataModel
DataModel
 Conformance
Conformance
 Lifecycle
Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

ChangeLog
ChangeLog

Company 2

The organization behind the API

Blog
Blog
 Website
Website

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: arc-prize-foundation
name: Arc Prize Foundation
description: The ARC Prize Foundation is a nonprofit advancing open artificial general intelligence research through scientifically
  rigorous benchmarks and competitive prizes. Its ARC-AGI benchmark series measures fluid intelligence on tasks that are easy
  for humans but hard for AI, and its ARC-AGI-3 Interactive Reasoning Benchmark exposes a public REST API (three.arcprize.org)
  plus an open-source Python toolkit and SDK for building agents that play, score, and generalize across novel game environments.
  The Foundation runs the ARC Prize competitions in partnership with Kaggle, with participation from OpenAI, Google, xAI,
  Anthropic, and NIST.
url: https://raw.githubusercontent.com/api-evangelist/arc-prize-foundation/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: enriched
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://arcprize.org/media/images/og-image-default.jpg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Artificial Intelligence
- AGI
- Benchmarks
- Agents
- Reasoning
- Machine-Learning
- Non-Profit
tags_raw:
- Company
- Artificial Intelligence
- AGI
- Benchmarks
- Agents
- Reasoning
- Machine Learning
- Nonprofit
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: arc-prize-foundation:arc-prize-foundation-commands-api
  name: Arc Prize Foundation Commands API
  description: The Commands API from Arc Prize Foundation — 8 operation(s) for commands.
  humanURL: https://docs.arcprize.org
  baseURL: https://three.arcprize.org
  tags:
  - Commands
  properties:
  - type: OpenAPI
    url: openapi/arc-prize-foundation-commands-api-openapi.yml
  - type: Documentation
    url: https://docs.arcprize.org
  - type: APIReference
    url: https://docs.arcprize.org/rest_overview
- aid: arc-prize-foundation:arc-prize-foundation-games-api
  name: Arc Prize Foundation Games API
  description: The Games API from Arc Prize Foundation — 1 operation(s) for games.
  humanURL: https://docs.arcprize.org
  baseURL: https://three.arcprize.org
  tags:
  - Games
  properties:
  - type: OpenAPI
    url: openapi/arc-prize-foundation-games-api-openapi.yml
  - type: Documentation
    url: https://docs.arcprize.org
  - type: APIReference
    url: https://docs.arcprize.org/rest_overview
- aid: arc-prize-foundation:arc-prize-foundation-scorecards-api
  name: Arc Prize Foundation Scorecards API
  description: The Scorecards API from Arc Prize Foundation — 4 operation(s) for scorecards.
  humanURL: https://docs.arcprize.org
  baseURL: https://three.arcprize.org
  tags:
  - Scorecards
  properties:
  - type: OpenAPI
    url: openapi/arc-prize-foundation-scorecards-api-openapi.yml
  - type: Documentation
    url: https://docs.arcprize.org
  - type: APIReference
    url: https://docs.arcprize.org/rest_overview
common:
- type: Overlay
  url: overlays/arc-prize-foundation-arc-agi-3-overlay.yaml
- type: DomainSecurity
  url: security/arc-prize-foundation-domain-security.yml
- type: Authentication
  url: authentication/arc-prize-foundation-authentication.yml
- type: Packages
  url: packages/arc-prize-foundation-packages.yml
- type: SDKs
  url: packages/arc-prize-foundation-packages.yml
- type: X-MCPServerCandidate
  url: mcp/arc-prize-foundation-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/arc-prize-foundation-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/arc-prize-foundation-problem-types.yml
- type: Conventions
  url: conventions/arc-prize-foundation-conventions.yml
- type: DataModel
  url: data-model/arc-prize-foundation-data-model.yml
- type: Conformance
  url: conformance/arc-prize-foundation-conformance.yml
- type: Lifecycle
  url: lifecycle/arc-prize-foundation-lifecycle.yml
- type: ChangeLog
  url: changelog/arc-prize-foundation-changelog.yml
- type: WellKnown
  url: well-known/arc-prize-foundation-well-known.yml
- type: DeveloperPortal
  url: https://docs.arcprize.org
- type: Documentation
  url: https://docs.arcprize.org
- type: APIReference
  url: https://docs.arcprize.org/rest_overview
- type: Quickstart
  url: https://docs.arcprize.org/index
- type: GitHubOrganization
  url: https://github.com/arcprize
- type: Blog
  url: https://arcprize.org/blog
- type: SignUp
  url: https://arcprize.org/platform
- type: Website
  url: https://arcprize.org
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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