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Kastra

The authorization layer for AI systems

Sub-millisecond policy decisionsCryptographic audit trailsZero trust architecture
Category
AI Security / AI Governance / Identity & Access Management for AI
Business model
B2B SaaS, likely usage-based or per-agent seat pricing with enterprise contracts
Target audience
Security teams and platform engineers at companies deploying AI agents (LLM-based applications, autonomous tools) who need to control agent actions and produce audit trails
Opportunity score
65/100

A niche but high-potential play in the emerging AI security stack; technical complexity and enterprise distribution are the main barriers, but if executed well the need for runtime authorization will grow rapidly.

Founder verdict
MAYBE

Kastra is attacking an inevitable need with promising technology, but the execution risk is high and the competitive moat uncertain.

What is Kastra?

Kastra is an early-stage infrastructure startup providing runtime authorization for AI agents, models, and tools. It enforces fine-grained policies at sub-millisecond latency with cryptographic audit trails, targeting enterprises that deploy autonomous AI systems and need to govern what those systems can do. The product appears to be in development or early access, with no publicly disclosed revenue or customer logos. Its positioning as an 'authorization layer' analogous to IAM for AI suggests a high-value, high-complexity bet on the growing AI agent ecosystem.

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