Proof of Play

Proof of Play is an a16z-backed gaming studio and on-chain infrastructure company, founded by Amitt Mahajan and best known for the fully on-chain RPG Pirate Nation. It builds a platform for high-performance, serverless on-chain applications and games, exposing a set of developer services: a verified random number generator (vRNG) for fast, secure on-chain randomness; a Marketplace API for peer-to-peer trading across on-chain and off-chain inventory; an on-chain NoSQL Entity-Component-System (ECS) database and indexer; token mirroring to replicate NFT ownership data across chains; a gasless relayer; and multichain scaling. Documentation and a public OpenAPI are published at docs.proofofplay.com, and much of the stack is progressively open-sourced under MIT on GitHub.

Proof of Play publishes 1 API on the APIs.io network: Public API API. Tagged areas include Company, Gaming, Blockchain, Web3, and Randomness.

Proof of Play’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, authentication, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.9/100 thin ▬ flat Agent 21/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Gaming Blockchain Web3RandomnessOnchain InfrastructureNFTDeveloper Services

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 33.9/100 · thin

Contract Quality 10.9 / 25

Developer Ergonomics 10.4 / 20

Access Clarity 4.2 / 20

Operational Transparency 0.3 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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 4 / 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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

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/proof-of-play: 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 1

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

Proof of Play Public API API

The Public API API from Proof of Play — 1 operation(s) for public api.

Open Collections 2

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

API Collection

OPEN COLLECTION

Proof of Play Public API API

OPEN COLLECTION

Security Posture 2

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

Proof Of Play Authentication

http · 1 scheme

SECURITY

Proof Of Play Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Proof Of Play Agentic Access

1 operation

1 operations · 0 acting

AGENTIC

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 5

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

WellKnown

AgentSkill

AgenticAccess

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Lifecycle

Lifecycle

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Blog

Blog

LinkedIn

Twitter

Twitter

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: proof-of-play
name: Proof of Play
description: 'Proof of Play is an a16z-backed gaming studio and on-chain infrastructure company, founded by Amitt Mahajan
  and best known for the fully on-chain RPG Pirate Nation. It builds a platform for high-performance, serverless on-chain
  applications and games, exposing a set of developer services: a verified random number generator (vRNG) for fast, secure
  on-chain randomness; a Marketplace API for peer-to-peer trading across on-chain and off-chain inventory; an on-chain NoSQL
  Entity-Component-System (ECS) database and indexer; token mirroring to replicate NFT ownership data across chains; a gasless
  relayer; and multichain scaling. Documentation and a public OpenAPI are published at docs.proofofplay.com, and much of the
  stack is progressively open-sourced under MIT on GitHub.'
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://media.proofofplay.com/public/POP_Home_OG.png
url: https://raw.githubusercontent.com/api-evangelist/proof-of-play/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Gaming
- Blockchain
- Web3
- Randomness
- Onchain Infrastructure
- NFT
- Developer Services
apis:
- aid: proof-of-play:proof-of-play-public-api-api
  name: Proof of Play Public API API
  description: The Public API API from Proof of Play — 1 operation(s) for public api.
  humanURL: https://docs.proofofplay.com/services/vrf
  baseURL: https://staging.vrf.proofofplay.com
  tags:
  - Public API
  properties:
  - type: OpenAPI
    url: openapi/proof-of-play-public-api-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/proof-of-play-vrf-overlay.yaml
- type: DeveloperPortal
  url: https://docs.proofofplay.com/introduction
- type: Documentation
  url: https://docs.proofofplay.com/introduction
- type: APIReference
  url: https://docs.proofofplay.com/api-reference/openapi.json
- type: GettingStarted
  url: https://docs.proofofplay.com/introduction
- type: GitHubOrganization
  url: https://github.com/proofofplay
- type: Support
  url: https://z7a9jnrajv8.typeform.com/to/Ywh9xVFF
- type: Blog
  url: https://www.proofofplay.com/resources
- type: TermsOfService
  url: https://arcade.piratenation.game/terms
- type: PrivacyPolicy
  url: https://arcade.piratenation.game/privacy
- type: LinkedIn
  url: https://www.linkedin.com/company/proof-of-play
- type: Twitter
  url: https://x.com/ProofOfPlay
- type: Authentication
  url: authentication/proof-of-play-authentication.yml
- type: Conventions
  url: conventions/proof-of-play-conventions.yml
- type: Lifecycle
  url: lifecycle/proof-of-play-lifecycle.yml
- type: Conformance
  url: conformance/proof-of-play-conformance.yml
- type: X-MCPServerCandidate
  url: mcp/proof-of-play-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/proof-of-play-llms.txt
- type: WellKnown
  url: well-known/proof-of-play-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/proof-of-play-agentic-access.yml
- type: DomainSecurity
  url: security/proof-of-play-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 13
  pass: local-v1

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