Prove

Prove is a phone-centric digital identity verification and authentication platform. The Prove API (v3) uses the consumer's mobile phone number and cryptographic possession signals to power Pre-Fill identity prefill, passive Trust Score verification, Unified Authentication, and an Identity Manager - all behind an OAuth 2.0 secured REST interface at https://api.prove.com/v3.

Prove publishes 7 APIs on the APIs.io network, including Auth API, Authentication API, Domain API, and 4 more. Tagged areas include Identity Verification, Authentication, Phone Intelligence, KYC, and Fraud Prevention.

Prove’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.4/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
7 APIs
Identity VerificationAuthenticationPhone IntelligenceKYCFraud Prevention

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 37.4/100 · thin
Contract Quality 15.1 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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 7 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/prove: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 7

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

Prove Auth API

Phone-based authentication and device binding.

Prove Authentication API

OAuth 2.0 token issuance.

Prove Domain API

Cross-domain linking of identity scopes.

Prove Identity API

Persistent identity lifecycle management.

Prove Identity Verification API

Ordered Pre-Fill verification flow - start, validate, challenge, complete.

Prove Pre-Fill API

Identity discovery and verified attribute retrieval.

Prove Trust Score API

Unified Authentication possession and trust evaluation.

Scroll for all 7

Open Collections 1

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

Prove API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Prove Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Prove Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Prove Finops

FINOPS

Security Posture 2

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

Prove Authentication

http/oauth2 · 2 schemes

SECURITY

Prove Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Prove Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Prove Agentic Access

26 operations · 19 acting · 1 human-in-the-loop

26 operations · 19 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: prove
url: https://raw.githubusercontent.com/api-evangelist/prove/refs/heads/main/apis.yml
name: Prove
kind: company
description: Prove is a phone-centric digital identity verification and authentication platform. The Prove API (v3) uses the
  consumer's mobile phone number and cryptographic possession signals to power Pre-Fill identity prefill, passive Trust Score
  verification, Unified Authentication, and an Identity Manager - all behind an OAuth 2.0 secured REST interface at https://api.prove.com/v3.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/prove.png
tags:
- Identity Verification
- Authentication
- Phone Intelligence
- KYC
- Fraud Prevention
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: prove:prove-auth-api
  name: Prove Auth API
  description: Phone-based authentication and device binding.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/prove-auth-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-authentication-api
  name: Prove Authentication API
  description: OAuth 2.0 token issuance.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/prove-authentication-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-domain-api
  name: Prove Domain API
  description: Cross-domain linking of identity scopes.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Domain
  properties:
  - type: OpenAPI
    url: openapi/prove-domain-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-identity-api
  name: Prove Identity API
  description: Persistent identity lifecycle management.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/prove-identity-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-identity-verification-api
  name: Prove Identity Verification API
  description: Ordered Pre-Fill verification flow - start, validate, challenge, complete.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Identity Verification
  properties:
  - type: OpenAPI
    url: openapi/prove-identity-verification-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-pre-fill-api
  name: Prove Pre-Fill API
  description: Identity discovery and verified attribute retrieval.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Pre-Fill
  properties:
  - type: OpenAPI
    url: openapi/prove-pre-fill-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
- aid: prove:prove-trust-score-api
  name: Prove Trust Score API
  description: Unified Authentication possession and trust evaluation.
  humanURL: https://developer.prove.com/docs/prove-pre-fill-flow
  baseURL: https://api.prove.com/v3
  tags:
  - Trust Score
  properties:
  - type: OpenAPI
    url: openapi/prove-trust-score-api-openapi.yml
  - type: Documentation
    url: https://developer.prove.com/docs/prove-pre-fill-flow
  - type: APIReference
    url: https://developer.prove.com/reference/start-request
  - type: PostmanCollection
    url: collections/prove.postman_collection.json
  - type: OpenCollection
    url: collections/prove.opencollection.json
  - type: Documentation
    url: https://developer.prove.com/reference/unify-server
  - type: Documentation
    url: https://developer.prove.com/reference/prefill-identity-server
common:
- type: AgenticAccess
  url: agentic-access/prove-agentic-access.yml
- type: DomainSecurity
  url: security/prove-domain-security.yml
- type: Authentication
  url: authentication/prove-authentication.yml
- type: OAuthScopes
  url: scopes/prove-scopes.yml
- type: GitHubOrganization
  url: https://github.com/prove-identity
- type: LinkedIn
  url: https://www.linkedin.com/company/proveidentity
- type: Website
  url: https://www.prove.com
- type: Documentation
  url: https://developer.prove.com
- type: Plans
  url: plans/prove-plans-pricing.yml
- type: RateLimits
  url: rate-limits/prove-rate-limits.yml
- type: FinOps
  url: finops/prove-finops.yml
- url: https://www.prove.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com