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What is Kastra?

Kastra acts as a vital authorization framework for AI systems, establishing the permissions of agents, models, and tools before they are executed. Situated along the execution path of numerous interactions, including prompts, tool calls, shell commands, database transactions, and API requests, it assesses each action through deterministic, attribute-based policies, making decisions to allow, deny, redact, or escalate in less than a millisecond. Unlike monitoring solutions that merely observe AI activities after they occur, Kastra takes a preemptive stance, blocking unauthorized actions before they can affect any tools, APIs, databases, or production systems. Its extensive control plane encompasses a policy engine, edge decision-making features, multiple integrations, and a tamper-proof evidence vault that securely records each decision for future auditing and replay. Additionally, with the introduction of Kastra Edge, local enforcement capabilities are broadened to developer environments, protecting coding agents like Claude Code, Cursor, and Codex CLI from malicious commands, unauthorized data access, unsafe file changes, and incorrect tool usage. This forward-thinking approach to authorization not only bolsters security but also guarantees compliance and accountability in AI-driven operations, fostering a more trustworthy environment for users. By ensuring that all actions are rigorously vetted, Kastra significantly mitigates potential risks associated with AI technologies.

What is Cerbos?

Cerbos is an all-encompassing platform for authorization management, crafted to define, implement, and evaluate access control policies across a range of applications and services. It empowers developers to leverage its policy decision point (PDP) for assessing authorization requests, while also allowing teams to formulate and manage policies based on roles, relationships, and attributes. With the flexibility to support workflows that are either local, self-hosted, or cloud-based, Cerbos delivers features such as policy testing, observability, and audit logs, which facilitate the examination of authorization decisions. Furthermore, Cerbos Hub provides a managed environment for organizing and sharing policies, while the open-source Cerbos PDP is well-suited for deployment alongside application workloads. This platform is specifically designed for engineering, security, and product teams that require dependable and comprehensive authorization solutions for users, services, and other identities within distributed systems. By improving security and simplifying the management of intricate access-control situations across various environments, Cerbos ultimately enhances operational efficiency and trust in the authorization processes.

Media

Media

No images available

Integrations Supported

Claude Code
Codex CLI
Cursor
Go
Google Sheets
JSON
Java
Microsoft Excel
OpenAI
OpenClaw
Python
Rust
Slack
Swift
TypeScript
YAML

Integrations Supported

Apache Kafka
Envoy
Model Context Protocol (MCP)
Trino

API Availability

Has API

API Availability

Has API

Pricing Information

$19.99 per month
Free Version

Pricing Information

$25/month
The open-source Cerbos PDP is free forever. Cerbos Hub Proof of Concept is $0/month for up to 100 monthly active principals. Development starts at $25/month and includes the first 100 monthly active principals; a three-month free trial is offered. Production starts at $933/month and includes the first 5,000 monthly active principals. Enterprise plans have custom pricing.
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Mac

Supported Platforms

SaaS
Mac
On-Prem
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Online Training

Training Options

Documentation Hub
Online Training
On-Site Training

Company Facts

Organization Name

Kastra

Date Founded

2026

Company Location

United States

Company Website

kastra.ai/

Company Facts

Organization Name

Cerbos

Date Founded

2021

Company Location

United Kingdom

Company Website

www.cerbos.dev

Categories and Features

AI Governance

Not specified

Categories and Features

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