PlainID

PlainID is an enterprise authorization company whose Policy-Based Access Control (PBAC) platform, "The Authorization Platform," controls what identities (human and AI agent) can access, do, and expose across data, APIs, applications, and AI systems. The platform centralizes policy authoring and externalizes runtime access decisions through a Policy Decision Point (PDP), Policy Information Points (PIP), and Policy Authorization Agents. PlainID exposes three public REST API families: Runtime Authorization APIs (permit/deny decisions, policy resolution, user access tokens, PDP cache invalidation), Management APIs (policy, asset-template, application, mapper, and identity-template CRUD plus orchestration and SaaS-vendor management), and Administration APIs (audit events, API client credentials, platform reports). PlainID is backed by Insight Partners.

PlainID publishes 1 API on the APIs.io network. Tagged areas include Company, Cybersecurity, Authorization, Access Control, and PBAC.

PlainID’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, authentication, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.0/100 emerging ▬ flat Agent 14/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

1 APIs

CompanyCybersecurityAuthorizationAccess ControlPBACIdentityPolicy ManagementAPI Security

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 26.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 10.4 / 20

Commercial Clarity 4.2 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 14/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

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/plainid: 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 1

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

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 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

Conformance

Conformance

Lifecycle

Lifecycle

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: plainid
name: PlainID
description: 'PlainID is an enterprise authorization company whose Policy-Based Access Control (PBAC) platform, "The Authorization
  Platform," controls what identities (human and AI agent) can access, do, and expose across data, APIs, applications, and
  AI systems. The platform centralizes policy authoring and externalizes runtime access decisions through a Policy Decision
  Point (PDP), Policy Information Points (PIP), and Policy Authorization Agents. PlainID exposes three public REST API families:
  Runtime Authorization APIs (permit/deny decisions, policy resolution, user access tokens, PDP cache invalidation), Management
  APIs (policy, asset-template, application, mapper, and identity-template CRUD plus orchestration and SaaS-vendor management),
  and Administration APIs (audit events, API client credentials, platform reports). PlainID is backed by Insight Partners.'
url: https://raw.githubusercontent.com/api-evangelist/plainid/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: profiled
x-tier-reason: enriched-from-public-api-surface
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
image: https://logo.clearbit.com/plainid.com
tags:
- Company
- Cybersecurity
- Authorization
- Access Control
- PBAC
- Identity
- Policy Management
- API Security
apis:
- name: PlainID Authorization Platform API
  description: Runtime Authorization (PDP permit/deny, policy resolution, user access token, cache invalidation), Management
    (policy/asset/application/mapper/identity CRUD, orchestration, SaaS vendors), and Administration (audit, client credentials,
    reports) REST APIs for the PlainID Authorization Platform.
  humanURL: https://docs.plainid.io/v1-api
  baseURL: https://tenant.us1.plainid.io/api/runtime
  tags:
  - Authorization
  - Access Control
  - PBAC
  - Policy
  properties:
  - type: Documentation
    url: https://docs.plainid.io/v1-api
  - type: APIReference
    url: https://docs.plainid.io/apidocs/authorization-apis.md
  - type: Authentication
    url: authentication/plainid-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.plainid.com/
- type: DeveloperPortal
  url: https://docs.plainid.io/
- type: Documentation
  url: https://docs.plainid.io/v1-api
- type: APIReference
  url: https://docs.plainid.io/apidocs/authorization-apis.md
- type: GettingStarted
  url: https://docs.plainid.io/docs/getting-started-2.md
- type: Blog
  url: https://www.plainid.com/resources/?category=blog
- type: Support
  url: https://plainid.atlassian.net/servicedesk/customer/portals
- type: StatusPage
  url: https://status.plainid.io
- type: PrivacyPolicy
  url: https://www.plainid.com/privacy-policy/
- type: TermsOfService
  url: https://www.plainid.com/terms-of-use/
- type: Authentication
  url: authentication/plainid-authentication.yml
- type: Conventions
  url: conventions/plainid-conventions.yml
- type: Conformance
  url: conformance/plainid-conformance.yml
- type: Lifecycle
  url: lifecycle/plainid-lifecycle.yml
- type: DomainSecurity
  url: security/plainid-domain-security.yml
- type: Packages
  url: packages/plainid-packages.yml
- type: WellKnown
  url: well-known/plainid-well-known.yml
- type: LLMsTxt
  url: llms/plainid-llms.txt
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 7
  pass: local-v1