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

33.1/100 thin ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Identity Verification Authentication Phone Intelligence KYC Fraud Prevention

Kin Score

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

Composite quality — 33.1/100 · thin

Contract Quality 12.3 / 23

Developer Ergonomics 2.8 / 18

Access Clarity 5.2 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 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

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 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.

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/prove: 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 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 9

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

API Collection

OPEN COLLECTION

Prove Auth API

OPEN COLLECTION

Prove Auth Authentication API

OPEN COLLECTION

Prove Auth Domain API

OPEN COLLECTION

Prove Auth Identity API

OPEN COLLECTION

Prove Auth Identity Verification API

OPEN COLLECTION

Prove Auth Pre-Fill API

OPEN COLLECTION

Prove Auth Trust Score API

OPEN COLLECTION

Prove API

OPEN COLLECTION

Scroll for all 9

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

Website

Website

Blog

Blog

Source (apis.yml)

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.
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: 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: '0.23'
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:
  - Authentication
  tags_raw:
  - 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

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