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What is StackRails?

StackRails is a specialized platform focused on software architecture and AI coding governance, catering specifically to engineering teams. It develops a lively knowledge graph that integrates repositories, services, APIs, events, and cloud infrastructure, allowing coding agents to gain insights into architecture and policy through the Model Context Protocol (MCP). The platform works seamlessly with various tools, including Claude Code, GitHub Copilot, Cursor, and OpenAI Codex, guaranteeing that the generated code complies with organizational rules on developers' local environments and during pull requests. Engineering teams can take advantage of its features to track dependencies across repositories, assess the implications of modifications, maintain up-to-date architecture documentation, monitor engineering policies, and perform AI-enhanced architectural evaluations. Additionally, StackRails provides deployment flexibility, functioning as a hosted service in the EU, within customer-managed cloud environments on platforms like AWS, Microsoft Azure, or Google Cloud, and it also allows for on-premises installations that prioritize security and control. This adaptability ensures that organizations can implement StackRails in ways that align with their specific operational requirements and compliance standards, allowing for a more tailored approach to software governance. Ultimately, StackRails is designed to empower engineering teams with the tools they need to enhance their development processes and maintain high standards in coding practices.

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.

Media

Media

Integrations Supported

Claude Code
Cursor
Azure DevOps
GitHub
GitLab
Model Context Protocol (MCP)
OpenAI Codex

Integrations Supported

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

API Availability

Has API

API Availability

Has API

Pricing Information

$15,000/year
The annual minimum contract is $15,000. Pricing scales with team size, with no usage meter or overage charges. A free 14-day Architectural Risk Assessment is available; it is an assessment, not a free software version or product trial. Premium support and self-hosting are optional.

Pricing Information

$19.99 per month
Free Version

Supported Platforms

SaaS
On-Prem

Supported Platforms

SaaS
Mac

Customer Service / Support

Not specified

Customer Service / Support

Web-Based Support

Training Options

Not specified

Training Options

Documentation Hub
Online Training

Company Facts

Organization Name

StackRails

Date Founded

2026

Company Location

Ireland

Company Website

stackrails.ai

Company Facts

Organization Name

Kastra

Date Founded

2026

Company Location

United States

Company Website

kastra.ai/

Categories and Features

AI Governance

Not specified

Categories and Features

AI Governance

Not specified

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