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Fine-grained authorization service for applications and APIs

Centralized authorization platform for adding fine-grained access controls to applications and APIs.

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aserto.com
Verified API available Free tier
What is it Centralized authorization platform for adding fine-grained access controls to applications and APIs.
Pricing Freemium
Free tier Yes
Platform API
API Yes
Best for Adding user permissions to a SaaS application, Enforcing access rules in microservices APIs
Domain registered 2005

Data updated Aug. 1, 2026

What does Fine-grained authorization service for applications and APIs do?

Aserto is a service that handles authorization for software applications. It lets developers define and enforce who can access specific resources within an app, down to individual files or data points. Instead of building this complex logic from scratch, you connect your app to Aserto, which makes the access decisions in about one millisecond. It supports common models like role-based access (RBAC), attribute-based rules (ABAC), and relationship-based controls (ReBAC).

The platform works by deploying local authorizers at the edge of your application infrastructure. These authorizers sync in real-time with Aserto's central control plane, which manages all your users, policies, and authorization data. This setup means your app never makes decisions based on outdated information. It provides SDKs for all major programming languages, including Node.js, Go, Python, Java, .NET, and Ruby, making integration straightforward.

This tool is built for development teams building applications that require precise control over user permissions. It's particularly useful for SaaS companies managing multi-tenant environments, enterprises enforcing strict security compliance, or any team implementing zero-trust security models. Use cases include controlling document access in collaborative tools, managing subscription tiers, and enforcing complex organizational hierarchies.

Developer Tools
#access control#api security#authorization#developer api#rbac#zero trust

Key features

What makes it stand out
01
Real-time authorization decisions in ~1ms
02
Centralized management for users, policies, and authorizers
03
SDK support for Node, Go, Python, Java, .NET, and Ruby
04
Supports RBAC, ABAC, and ReBAC authorization models
05
Automatic audit trails for compliance and decision logging

Who is Fine-grained authorization service for applications and APIs for?

Who benefits most from this tool
Adding user permissions to a SaaS application
Enforcing access rules in microservices APIs
Implementing zero-trust security models

Pricing

Free tier available — start without a credit card

Starter

Free
  • 50 policy repositories
  • 100 authorizer instances
  • 1000 users
  • Code repos: GitHub, GitLab
  • Identity providers: Auth0
  • Community Slack support

Essentials

$0.2/month billed yearly

Everything in Starter, plus:

  • 0.2 price per user per month
  • Unlimited policy repositories
  • Unlimited authorizer instances
  • Up to 5000 users
  • Shared organizations
  • Private slack channel

Pro

Custom

Everything in Essentials, plus:

  • Unlimited users
  • GitHub / GitLab Enterprise
  • Okta, Azure AD, more!
  • GHCR, GCR, DockerHub
  • Managed edge authorizers
  • 30-day decision log retention
  • 9x5 email support

Enterprise

Custom

Everything in Pro, plus:

  • Signed policy images
  • Self-hosted IDP gateway
  • Run in your own VPC
  • 180-day decision log retention
  • 24x7 email support

Trust & presence

Domain Domain registered 2005

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Pricing page

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