Curated
Aserto Authorization API
Aserto · Authorization
Authorization APIs and policy services for fine-grained application access control.
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Find authorization APIs.
Discover APIs and policy engines for permissions, fine-grained authorization, relationship-based access control and policy decisions.
ARD: https://authorizationapis.com/.well-known/ard.json
Catalog: https://authorizationapis.com/api/catalog.json
LLM overview: https://authorizationapis.com/llms.txt
Tasks this gateway can help discover
Find APIs for fine-grained application authorization
Find relationship-based authorization APIs similar to Zanzibar
Find policy APIs for RBAC, ABAC or contextual access decisions
Find authorization services suitable for agent or service permissions
Authorization API directory
A curated semantic index of public authorization APIs and policy-engine interfaces. Curated: 2026-09-17.
Curated
AWS Verified Permissions API
AWS · Authorization
Managed fine-grained authorization service using Cedar policies for application permissions.
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Cerbos PDP API
Cerbos · Authorization
Policy decision point APIs for application authorization and policy checks.
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Open Policy Agent REST API
Open Policy Agent · Authorization
REST API for policy management, rule evaluation, queries, compilation and health/status operations.
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OpenFGA API
OpenFGA · Authorization
API for relationship-based fine-grained authorization models, tuples and access checks.
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Oso Cloud API
Oso · Authorization
Authorization service for application permissions and relationship-aware access decisions.
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Permit.io API
Permit.io · Authorization
Authorization platform APIs for policy, users, resources, roles and permission checks.
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SpiceDB API
AuthZed · Authorization
Relationship-based authorization service implementing Zanzibar-style permissions with gRPC and HTTP APIs.
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