ProofDraw

Provably-fair random selection REST API that seals entry lists with SHA-256 commitments bound to future drand (League of Entropy) randomness rounds, producing publicly verifiable draw receipts with client-side open-source verification. A draw is created, entries are added as opaque ticket ids, then sealed against a chosen future beacon round on the quicknet (3s) or classic (30s) chain; the canonical list file is hashed, mirrored to a public GitHub repository, and anchored with OpenTimestamps, so any entrant can re-derive the winner in their own browser from public sources alone. Serves giveaways, raffles and sweepstakes, non-profit draws, audit sample selection and task allocation, with HMAC-signed webhooks and bearer API-key authentication.

ProofDraw publishes 5 API contracts indexed on the APIs.io network, including Account API, Auth API, Draws API, and 2 more. Tagged areas include Randomness, Provably Fair, Drand, Verifiable Randomness, and Cryptography.

The ProofDraw catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

ProofDraw’s developer surface includes pricing, documentation, API reference, support, signup flow, authentication, sandbox, and 25 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

43.6/100 developing ▲ 5.4 Agent 35/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 3 Agent Skills

RandomnessProvably FairDrandVerifiable RandomnessCryptographyraffleGiveaways Sweepstakes Lottery Verification Webhook REST API

Kin Score

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

Composite quality — 43.6/100 · developing

Contract Quality 10.2 / 19

Developer Ergonomics 5.4 / 15

Access Clarity 6.5 / 15

Operational Transparency 1.5 / 10

Contract Governance 1.6 / 9

Discoverability 5.0 / 8

Regulatory Posture 4.0 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 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 7 / 7

Typed Event Surface 6 / 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 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 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
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

5 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 36.3 — up to +12.7 composite points
Contract Quality scores 54.4 — up to +11.4 composite points
Access Clarity scores 43.4 — up to +11.3 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/proofdraw/apis.yml: open an issue on github.com/api-evangelist/proofdraw 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Sports Betting and iGaming (licensed operators and suppliers)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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 5

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

ProofDraw Account API

The Account API from ProofDraw — 2 operation(s) for account.

ProofDraw Auth API

The Auth API from ProofDraw — 2 operation(s) for auth.

ProofDraw Draws API

The Draws API from ProofDraw — 6 operation(s) for draws.

ProofDraw System API

The System API from ProofDraw — 1 operation(s) for system.

ProofDraw Verification API

Public, unauthenticated artifacts used to verify a draw.

Open Collections 1

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

ProofDraw API

OPEN COLLECTION

Agent Skills 3

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

Run a verifiable draw

AGENT SKILL

Schedule a draw and collect the result asynchronously

AGENT SKILL

Independently verify a ProofDraw result

AGENT SKILL

ProofDraw API pricing

Prices published by ProofDraw. A free plan or tier is listed.

Plan	Price
Free	Free
Paid / custom	—

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Proofdraw Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Proofdraw Rate Limits

0 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

ProofDraw

SLA

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Proofdraw Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

ProofDraw API Rules

60 rules · 52 errors 3 warnings 5 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.

Proofdraw Api Overlay

26 actions · documentation · proofdraw-api-openapi.yml

DERIVED

Security Posture 3

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

Proofdraw Authentication

http · 1 scheme

SECURITY

Proofdraw Domain Security

TLSv1.3 · DMARC

SECURITY

Proofdraw Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Sandbox

Sandbox

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

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Webhooks

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SourceCode

SourceCode

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 2

Status, limits, changes, and where to get help

Support

Support

RateLimits

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

License

TermsOfService

PrivacyPolicy

Plans

Company 3

The organization behind the API

Website

Website

Twitter

Twitter

LinkedIn

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Whitepaper

Whitepaper

Source (apis.yml)

name: ProofDraw
description: Provably-fair random selection REST API that seals entry lists with SHA-256 commitments bound to future drand
  (League of Entropy) randomness rounds, producing publicly verifiable draw receipts with client-side open-source verification.
  A draw is created, entries are added as opaque ticket ids, then sealed against a chosen future beacon round on the quicknet
  (3s) or classic (30s) chain; the canonical list file is hashed, mirrored to a public GitHub repository, and anchored with
  OpenTimestamps, so any entrant can re-derive the winner in their own browser from public sources alone. Serves giveaways,
  raffles and sweepstakes, non-profit draws, audit sample selection and task allocation, with HMAC-signed webhooks and bearer
  API-key authentication.
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  probe_state: covered
  source:
  - plans
  - authentication
  - rate-limits
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://proofdraw.com/og.png
url: https://raw.githubusercontent.com/api-evangelist/proofdraw/refs/heads/main/apis.yml
created: '2026-07-13'
modified: '2026-08-11'
specificationVersion: '0.23'
tags:
- Randomness
- Provably Fair
- Drand
- Verifiable Randomness
- Cryptography
- raffle
- Giveaways
- Sweepstakes
- Lottery
- Verification
- Webhook
- REST API
tags_raw:
- randomness
- provably-fair
- drand
- verifiable-randomness
- cryptography
- raffle
- giveaway
- sweepstakes
- lottery
- verification
- webhooks
- rest-api
apis:
- aid: proofdraw:proofdraw-account-api
  name: ProofDraw Account API
  description: The Account API from ProofDraw — 2 operation(s) for account.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-account-api-openapi.yml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
- aid: proofdraw:proofdraw-auth-api
  name: ProofDraw Auth API
  description: The Auth API from ProofDraw — 2 operation(s) for auth.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  tags:
  - Authentication
  tags_raw:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-auth-api-openapi.yml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
- aid: proofdraw:proofdraw-draws-api
  name: ProofDraw Draws API
  description: The Draws API from ProofDraw — 6 operation(s) for draws.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  tags:
  - Draws
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-draws-api-openapi.yml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
- aid: proofdraw:proofdraw-system-api
  name: ProofDraw System API
  description: The System API from ProofDraw — 1 operation(s) for system.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-system-api-openapi.yml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
- aid: proofdraw:proofdraw-verification-api
  name: ProofDraw Verification API
  description: Public, unauthenticated artifacts used to verify a draw.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  tags:
  - Verification
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-verification-api-openapi.yml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
maintainers:
- FN: ProofDraw
  email: hello@proofdraw.com
  url: https://proofdraw.com/
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-07-13T18:06:16.367Z'
x-enrichment:
  date: '2026-08-11'
  status: enriched
  artifacts_added: 23
  pass: local-v1
x-coverage:
  state: covered
  reason: null
  detail: Live OpenAPI 3.0.3 harvested from https://proofdraw.com/openapi.json (200) and the full API reference read from
    https://proofdraw.com/api (200); no wall was hit. The agent surfaces are genuinely absent — every /.well-known/ path,
    /llms.txt and /mcp return 404.
  checked: '2026-08-11'
common:
- type: Pricing
  url: https://proofdraw.com/api
- type: License
  name: MIT
  url: https://github.com/proofdraw/verifier/blob/main/LICENSE
- type: Overlay
  url: overlays/proofdraw-api-overlay.yaml
- type: Website
  url: https://proofdraw.com/
- type: DeveloperPortal
  url: https://proofdraw.com/api
- type: Documentation
  url: https://proofdraw.com/api
- type: APIReference
  url: https://proofdraw.com/api
- type: Support
  url: https://proofdraw.com/contact
- type: GitHubOrganization
  url: https://github.com/proofdraw
- type: SignUp
  url: https://proofdraw.com/register
- type: Login
  url: https://proofdraw.com/login
- type: TermsOfService
  url: https://proofdraw.com/terms
- type: PrivacyPolicy
  url: https://proofdraw.com/privacy
- type: Whitepaper
  url: https://proofdraw.com/whitepaper
- type: Twitter
  url: https://x.com/proofdraw
- type: LinkedIn
  url: https://linkedin.com/company/proofdraw
- type: SourceCode
  url: https://github.com/proofdraw/verifier
- type: DomainSecurity
  url: security/proofdraw-domain-security.yml
- type: Authentication
  url: authentication/proofdraw-authentication.yml
- type: Conventions
  url: conventions/proofdraw-conventions.yml
- type: ErrorCatalog
  url: errors/proofdraw-problem-types.yml
- type: Lifecycle
  url: lifecycle/proofdraw-lifecycle.yml
- type: Conformance
  url: conformance/proofdraw-conformance.yml
- type: DataModel
  url: data-model/proofdraw-data-model.yml
- type: Webhooks
  url: asyncapi/proofdraw-webhooks.yml
- type: Sandbox
  url: sandbox/proofdraw-sandbox.yml
- type: Plans
  url: plans/proofdraw-plans-pricing.yml
- type: RateLimits
  url: rate-limits/proofdraw-rate-limits.yml
- type: LLMsTxt
  url: llms/proofdraw-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: VulnerabilityDisclosure
  url: security/proofdraw-vulnerability-disclosure.yml
- type: Security
  url: https://proofdraw.com/contact

ProofDraw API — frequently asked questions

Does ProofDraw have an API?

Yes. APIs.io lists 5 APIs from ProofDraw, including ProofDraw Account API, ProofDraw Auth API and ProofDraw Draws API, and 2 more.

Is there an OpenAPI specification for the ProofDraw API?

Yes. APIs.io indexes 5 OpenAPI specifications for ProofDraw, each linked for download from this page.

How do I authenticate with the ProofDraw API?

ProofDraw uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Proofdraw Authentication.

How much does the ProofDraw API cost?

APIs.io lists 2 pricing plans for ProofDraw, with each plan's price, limits and inclusions under Pricing on this page.

Is the ProofDraw API ready for AI agents?

ProofDraw has a Kin Score of 43.6 out of 100 (developing) and an Agent Readiness score of 34.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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