Pax Historia

Pax Historia is an alternate-history sandbox game backed by Y Combinator, where players explore branching "what if" scenarios and reshape the course of history through open-ended, simulation-driven play. It is a consumer-facing game product reached at paxhistoria.co with a single "Get Started" entry point; as of this enrichment pass the company publishes no public developer platform, API, SDKs, documentation, pricing page, or other machine-readable API surface. This profile is maintained in the API Evangelist network as a company lead surfaced from the Y Combinator portfolio and enriched here with verified identity and domain-security signals only.

Pax Historia is profiled on the APIs.io network. Tagged areas include Company, Games, Gaming, Alternate History, and Simulation.

Pax Historia’s developer surface includes getting-started guide and 2 more developer resources.

🌐 Visit website 📡 Source on GitHub
7.4/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
0 APIs
CompanyGamesGamingAlternate HistorySimulationArtificial IntelligenceConsumerY Combinator

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 7.4/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 2.4 / 20
Access Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Contract Governance 0.0 / 12
Discoverability 5.0 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
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 0 / 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
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 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.
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/pax-historia: 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 →

Security Posture 1

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

Pax Historia Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: pax-historia
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/pax-historia.png
name: Pax Historia
description: Pax Historia is an alternate-history sandbox game backed by Y Combinator, where players explore branching "what
  if" scenarios and reshape the course of history through open-ended, simulation-driven play. It is a consumer-facing game
  product reached at paxhistoria.co with a single "Get Started" entry point; as of this enrichment pass the company publishes
  no public developer platform, API, SDKs, documentation, pricing page, or other machine-readable API surface. This profile
  is maintained in the API Evangelist network as a company lead surfaced from the Y Combinator portfolio and enriched here
  with verified identity and domain-security signals only.
url: https://raw.githubusercontent.com/api-evangelist/pax-historia/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: profiled
x-tier-reason: no-public-api-surface
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Games
- Gaming
- Alternate History
- Simulation
- Artificial Intelligence
- Consumer
- Y Combinator
apis: []
common:
- type: DomainSecurity
  url: security/pax-historia-domain-security.yml
- type: Website
  url: https://www.paxhistoria.co/
- type: GettingStarted
  url: https://www.paxhistoria.co/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1

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