Overview
Kastra is a runtime authorization layer for AI agents, enforcing policies on every action before execution. It targets platform teams and enterprises using AI coding assistants like Claude Code, Cursor, and Codex, ensuring agents only perform allowed actions. blurmyplate, on the other hand, is a web-based tool that automatically detects and blurs license plates in car photos, aimed at private sellers and small dealerships to protect privacy in online listings.
Feature Comparison
| Feature | Kastra | blurmyplate |
|---|---|---|
| Primary Function | Runtime authorization for AI agents | License plate blurring for car photos |
| Target Users | Enterprises, developers, security teams | Car sellers, dealerships, photographers |
| Deployment | Cloud, self-hosted, air-gap; CLI and macOS app | Web-based SaaS |
| Latency | Sub-millisecond (p99 0.8ms) | Processing in seconds |
| Integration | Claude Code, Cursor, Codex, OpenClaw, SDKs | None; standalone upload |
| Compliance | SOC 2, ISO 27001, HIPAA, GDPR, FedRAMP prep | Encrypted, EXIF stripped, auto-delete |
| Pricing | Free tier; paid plans (not detailed) | First 3 free; credit packs |
| Key Differentiator | Prevents unauthorized AI actions | Simple privacy tool for non-technical users |
Pricing
Kastra offers a free tier for solo developers with local Edge agent and no account needed. For teams, pricing is likely subscription-based with cloud, self-hosted, or air-gap options, but specific numbers are not disclosed on the site.
blurmyplate offers the first 3 photos free with no account. After that, users purchase credit packs (valid 1 year) for additional blurs; failed auto-detects don't consume credits. Casual one-off unlocks don't use credits.
Pros and Cons
Kastra
Pros:
- Sub-millisecond enforcement prevents risky actions before they occur
- Comprehensive compliance certifications (SOC 2, ISO 27001, HIPAA, GDPR)
- Supports multiple AI frameworks and deployment models (cloud, self-hosted, air-gap)
- Includes Recon for auditing past agent behavior and drafting policies
- Human checkpoints for sensitive actions like wire transfers
Cons:
- Complex setup for non-technical users; requires policy-as-code knowledge
- Pricing not transparent; may be costly for small teams
- Focused on AI agents; not relevant for non-AI workflows
blurmyplate
Pros:
- Extremely easy to use: drag-and-drop, no account needed for first photos
- Privacy-focused: EXIF stripping, auto-delete, encrypted uploads
- No watermark and preview before payment
- Credit packs valid for a year, flexible for occasional sellers
- Supports HEIC conversion to JPG
Cons:
- Limited to license plate blurring; no other editing features
- No API or integration with listing platforms
- No formal compliance certifications (e.g., SOC 2)
- Requires upload to servers, which may concern privacy-sensitive users despite auto-delete
Verdict
Choose Kastra if you're an enterprise or developer needing to govern AI agent actions with strict policy enforcement and compliance. Choose blurmyplate if you're an individual seller or small dealership looking for a simple, privacy-focused tool to blur license plates in car photos before posting online.