Oso Cloud

Oso Cloud is an authorization-as-a-service platform that provides a REST API for defining and enforcing relationship-based access control policies. It enables developers to model RBAC, ReBAC, and ABAC authorization patterns, manage authorization facts, and query permissions at runtime with sub-10ms latency and 99.99% availability.

Oso Cloud publishes 4 APIs on the APIs.io network, including Centralized Authorization Data API, Check API API, Local Check API API, and 1 more. Tagged areas include Authorization, Access Control, RBAC, ReBAC, and ABAC.

The Oso Cloud catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Oso Cloud’s developer surface includes authentication, documentation, engineering blog, pricing, changelog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.9/100 developing ▬ flat Agent 29/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreemiumSelf serve⚡ Free to try

4 APIs

AuthorizationAccess ControlRBACReBACABACPermissionsPolicySecurityIdentity

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 45.9/100 · developing

Contract Quality 11.5 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 9.8 / 17

Operational Transparency 7.6 / 11

Contract Governance 1.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 5.0 / 15

Agent readiness — 29/100 · 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

Regulatory Posture applies to this provider. Its tags matched the Insurance 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/oso: 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 4

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

Rate Limits 1

Documented rate limits and quota policies.

Oso Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

JSON Schema 40

Standalone JSON Schema definitions for this provider's data models.

Scroll for all 40

Examples 13

Example request and response payloads for these APIs.

Scroll for all 13

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

GitHubOrg

GitHubOrg

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

ChangeLog

ChangeLog

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: oso
name: Oso Cloud
description: Oso Cloud is an authorization-as-a-service platform that provides a REST API for defining and enforcing relationship-based
  access control policies. It enables developers to model RBAC, ReBAC, and ABAC authorization patterns, manage authorization
  facts, and query permissions at runtime with sub-10ms latency and 99.99% availability.
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/oso.png
url: https://raw.githubusercontent.com/api-evangelist/oso/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
type: Index
tags:
- Authorization
- Access Control
- RBAC
- ReBAC
- ABAC
- Permissions
- Policy
- Security
- Identity
apis:
- aid: oso:oso-centralized-authorization-data-api
  name: Oso Cloud Centralized Authorization Data API
  description: The Centralized Authorization Data API from Oso Cloud — 6 operation(s) for centralized authorization data.
  humanURL: https://www.osohq.com/docs
  baseURL: https://api.osohq.com/api
  tags:
  - Centralized Authorization Data
  properties:
  - type: OpenAPI
    url: openapi/oso-centralized-authorization-data-api-openapi.yml
  - type: Documentation
    url: https://www.osohq.com/docs
  - type: Authentication
    url: https://www.osohq.com/docs/app-integration/oso-cloud-configuration/api-keys
- aid: oso:oso-check-api-api
  name: Oso Cloud Check API API
  description: The Check API API from Oso Cloud — 6 operation(s) for check api.
  humanURL: https://www.osohq.com/docs
  baseURL: https://api.osohq.com/api
  tags:
  - Check API
  properties:
  - type: OpenAPI
    url: openapi/oso-check-api-api-openapi.yml
  - type: Documentation
    url: https://www.osohq.com/docs
  - type: Authentication
    url: https://www.osohq.com/docs/app-integration/oso-cloud-configuration/api-keys
- aid: oso:oso-local-check-api-api
  name: Oso Cloud Local Check API API
  description: The Local Check API API from Oso Cloud — 4 operation(s) for local check api.
  humanURL: https://www.osohq.com/docs
  baseURL: https://api.osohq.com/api
  tags:
  - Local Check API
  properties:
  - type: OpenAPI
    url: openapi/oso-local-check-api-api-openapi.yml
  - type: Documentation
    url: https://www.osohq.com/docs
  - type: Authentication
    url: https://www.osohq.com/docs/app-integration/oso-cloud-configuration/api-keys
- aid: oso:oso-policy-api
  name: Oso Cloud Policy API
  description: The Policy API from Oso Cloud — 2 operation(s) for policy.
  humanURL: https://www.osohq.com/docs
  baseURL: https://api.osohq.com/api
  tags:
  - Policy
  properties:
  - type: OpenAPI
    url: openapi/oso-policy-api-openapi.yml
  - type: Documentation
    url: https://www.osohq.com/docs
  - type: Authentication
    url: https://www.osohq.com/docs/app-integration/oso-cloud-configuration/api-keys
common:
- type: AgenticAccess
  url: agentic-access/oso-agentic-access.yml
- type: TrustCenter
  url: security/oso-trust-center.yml
- type: DomainSecurity
  url: security/oso-domain-security.yml
- type: Authentication
  url: authentication/oso-authentication.yml
- type: Website
  url: https://www.osohq.com
- type: Documentation
  url: https://www.osohq.com/docs
- type: GitHubOrg
  url: https://github.com/osohq
- type: LinkedIn
  url: https://www.linkedin.com/company/osohq
- type: Blog
  url: https://www.osohq.com/blog
- type: Pricing
  url: https://www.osohq.com/pricing
- type: StatusPage
  url: https://oso.statuspage.io/
- type: X
  url: https://x.com/osohq
- type: ChangeLog
  url: https://www.osohq.com/docs/changelog/whats-new
- type: Plans
  url: plans/oso-plans-pricing.yml
- type: RateLimits
  url: rate-limits/oso-rate-limits.yml
- type: FinOps
  url: finops/oso-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com