Fortytwo

Fortytwo is an AI platform offering open‑weight model APIs through its Engine service and on‑premise Harbor solutions. Founded in 2024 in Mountain View, California, the company focuses on delivering better answers from open models, providing scalable access, robust deployment options, and developer‑friendly tools for enterprises and developers alike. The platform emphasizes transparency, open‑source integration, and flexible pricing to accelerate AI adoption across industries.

Fortytwo is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Machine Learning, Platform, and Open Source.

Fortytwo’s developer surface includes authentication, documentation, API reference, getting-started guide, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.3/100 thin Agent 8/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 API

Company Artificial Intelligence Machine Learning Platform Open Source

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 27.3/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 2.9 / 17

Operational Transparency 3.2 / 11

Contract Governance 0.5 / 10

Discoverability 6.5 / 9

Regulatory Posture 4.2 / 15

Agent readiness — 8/100 · agent aware

Machine-Readable Contract 0 / 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 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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 5 / 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

11 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points Ask about this →
Access Clarity scores 17.0 — up to +16.6 composite points Ask about this →
Contract Governance scores 4.5 — up to +11.5 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/fortytwo-network/apis.yml: open an issue on github.com/api-evangelist/fortytwo-network 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.

Agent2Agent

measured — observed by APIs.io (conformant)

APIs 1

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

Fortytwo API

OpenAI-compatible chat completions. See API conventions.

Security Posture 3

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

Fortytwo Authentication

1 scheme

SECURITY

Fortytwo Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Fortytwo Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 11

Authentication, authorization, and security posture

Security

Authentication

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 11

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fortytwo-network
name: Fortytwo
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://0w5jg55otggwxtmq.public.blob.vercel-storage.com/branding/Opengraph.png?v=20261012
description: Fortytwo is an AI platform offering open‑weight model APIs through its Engine service and on‑premise Harbor solutions.
  Founded in 2024 in Mountain View, California, the company focuses on delivering better answers from open models, providing
  scalable access, robust deployment options, and developer‑friendly tools for enterprises and developers alike. The platform
  emphasizes transparency, open‑source integration, and flexible pricing to accelerate AI adoption across industries.
url: https://artifacts.apis.io/fortytwo-network/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-08 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-08'
modified: '2026-11-08'
tags:
- Company
- Artificial Intelligence
- Machine Learning
- Platform
- Open Source
tags_raw:
- Company
- AI
- MachineLearning
- Platform
- OpenSource
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Security
  url: https://docs.fortytwo.network/legal/vulnerability-disclosure-policy
- type: Authentication
  url: authentication/fortytwo-network-authentication.yml
- type: Conformance
  url: conformance/fortytwo-network-conformance.yml
- type: LLMsTxt
  url: llms/fortytwo-network-llms.txt
- type: AgentCard
  url: a2a/fortytwo-network-a2a.yml
- type: SecurityTxt
  url: well-known/fortytwo-network-strand-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-platform-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-harbor-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-engine-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-app-security.txt
- type: SecurityTxt
  url: well-known/fortytwo-network-api-security.txt
- type: WellKnown
  url: well-known/fortytwo-network-well-known.yml
- type: Hosts
  url: hosts/fortytwo-network-hosts.yml
- type: Vendors
  url: vendors/fortytwo-network-vendors.yml
- type: VulnerabilityDisclosure
  url: security/fortytwo-network-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/fortytwo-network-domain-security.yml
- type: Website
  url: https://fortytwo.network/
- type: Documentation
  url: https://docs.fortytwo.network/
- type: DeveloperPortal
  url: https://docs.fortytwo.network/
- type: APIReference
  url: https://docs.fortytwo.network/apis/api-reference-intro
- type: GettingStarted
  url: https://docs.fortytwo.network/docs/quickstart
- type: GitHubOrganization
  url: https://github.com/Fortytwo-Network/
- type: PrivacyPolicy
  url: https://docs.fortytwo.network/legal/privacy-policy
- type: StatusPage
  url: https://status.fortytwo.network/
- type: TermsOfService
  url: https://docs.fortytwo.network/legal/terms-of-service
apis:
- name: Fortytwo API
  description: OpenAI-compatible chat completions. See API conventions.
  humanURL: https://docs.fortytwo.network/apis/api-reference-intro
  baseURL: https://api.fortytwo.network
  aid: fortytwo-network:fortytwo-api
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: Docs are rendered via Mintlify JavaScript, preventing machine‑readable spec discovery.
  evidence:
  - url: https://docs.fortytwo.network/
    status: 200
  - url: https://api.fortytwo.network/openapi.json
    status: 404
  checked: '2026-11-09'
x-enrichment:
  date: '2026-11-08'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Fortytwo API — frequently asked questions

Does Fortytwo have an API?

Yes. APIs.io lists 1 API from Fortytwo, including Fortytwo API.

How do I authenticate with the Fortytwo API?

Fortytwo uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Fortytwo Authentication.

Is the Fortytwo API ready for AI agents?

Fortytwo has a Kin Score of 27.3 out of 100 (thin) and an Agent Readiness score of 8.3 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

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Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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