GuardRail v0.3.1 — Pre-execution security for AI coding agents

What's New in v0.3.1

Core

• 172 production-tested guards across 13 live applications
• One-command install: npx guardrail-agent init
• Claude Code native hook integration (pre-bash, post-bash, pre-tool)
• Self-bypass detection (guards that watch the guards)
• <1ms per guard — zero developer friction

Security

• HMAC token security for guard integrity
• Pen-test framework with 50+ attack patterns
• Uninstall, disable, enable commands for lifecycle management

Compliance

• EU AI Act enforcement mapping (Art. 9, 10, 12, 14, 15)
• Guard-to-article mapping for audit trails

Improvements

• Live demo after install
• SVG banner and story-driven README
• AgentStack bundle cross-link
• Fixed self_bypass_guard in installer CORE_GUARDS list

Install

npx guardrail-agent init

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Full Changelog: v0.3.0...v0.3.1

v0.3.0 -- GitHub Visibility + EU AI Act Enforcement

What's New

GitHub Visibility

• shields.io badges (stars, license, version, issues) in README
• Navigation links and star CTA
• CONTRIBUTING.md with guard-writing guide and PR process
• 8 open issues tagged good first issue for new contributors

EU AI Act

• Full enforcement starts August 2, 2026 -- GuardRail provides technical controls for AI agent governance
• Guard-to-article mapping for Art. 9, 10, 12, 14, 15

Improvements

• Star reminder and Discussions link after install
• Feedback issue template
• Fixed Pro landing page link

Pricing

• EUR 20/dev/month for Pro (48 guards, PEN-test framework, priority support)
• EUR 5,000 compliance kit (one-time)

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Full Changelog: v0.2.3...v0.3.0

v0.2.3 — CLI Colors, Animated Demo, Works-With Honesty

What's new

• CLI colors and animated demo — guardrail status and guardrail test now show colored output with clear pass/fail indicators
• Honest Works-With section — removed unverified compatibility claims, now lists only tested integrations
• Pro modules preview — PII Shield, Audit Trail, and Compliance Reporter documented (coming soon)
• Landing page — updated pricing, Pro module descriptions, product demo with captions

Fixes

• Replaced all guardrail.dev links with guardrail.promptandbuild.de
• Security review fixes in dispatcher and guard cleanup
• Pro upgrade flow improvements in CLI

Install

npx guardrail-agent init

Full changelog

v0.1.1...v0.2.3