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 API contracts indexed on the APIs.io network: Commands API, Games API, and Scorecards API. Tagged areas include Company, Artificial Intelligence, AGI, Benchmarks, and Agents.

The Arc Prize Foundation catalog on APIs.io includes 1 Spectral governance ruleset.

Arc Prize Foundation’s developer surface includes authentication, changelog, documentation, API reference, quickstart, engineering blog, signup flow, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.9/100 thin ▬ flat Agent 23/100 agent aware Front door AI 5/6 prominent Heartbeat 86/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 Agent Skills

Company Artificial Intelligence AGI Benchmarks Agents Reasoning Machine Learning Non-Profit

Kin Score

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

Composite quality — 38.9/100 · thin

Contract Quality 9.5 / 19

Developer Ergonomics 9.2 / 15

Access Clarity 2.0 / 15

Operational Transparency 1.8 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 13.2 — up to +17.4 composite points
Contract Quality scores 50.8 — up to +12.3 composite points
Operational Transparency scores 18.4 — up to +10.6 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/arc-prize-foundation/apis.yml: open an issue on github.com/api-evangelist/arc-prize-foundation 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 →

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 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 3

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

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

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

arc-agi-3-play-game

AGENT SKILL

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Arc Prize Foundation API Rules

59 rules · 57 errors 1 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Arc Prize Foundation Arc Agi 3 Overlay

4 actions · documentation · arc-prize-foundation-arc-agi-3-openapi.yaml

GENERATED

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

LLMsTxt

AgentSkill

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

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 3

The organization behind the API

BlogRSS

BlogRSS

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

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: '2026-11-06'
  method: derived
image: https://arcprize.org/media/images/og-image-default.jpg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-19
x-docs-hosting: vercel
tags:
- Company
- Artificial Intelligence
- AGI
- Benchmarks
- Agents
- Reasoning
- Machine Learning
- Non-Profit
tags_raw:
- Company
- Artificial Intelligence
- AGI
- Benchmarks
- Agents
- Reasoning
- Machine Learning
- Nonprofit
- Machine-Learning
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:
- url: https://arcprize.org/feed.xml
  type: BlogRSS
- 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

Arc Prize Foundation API — frequently asked questions

Does Arc Prize Foundation have an API?

Yes. APIs.io lists 3 APIs from Arc Prize Foundation, including Arc Prize Foundation Commands API, Arc Prize Foundation Games API and Arc Prize Foundation Scorecards API.

Is there an OpenAPI specification for the Arc Prize Foundation API?

Yes. APIs.io indexes 3 OpenAPI specifications for Arc Prize Foundation, each linked for download from this page.

How do I authenticate with the Arc Prize Foundation API?

Arc Prize Foundation uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Arc Prize Foundation Authentication.

Is the Arc Prize Foundation API ready for AI agents?

Arc Prize Foundation has a Kin Score of 38.9 out of 100 (thin) and an Agent Readiness score of 23.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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