Tracy 2.12 revolutionizes PHP application debugging. It adds a parallel markdown layer to the JS console and .md files to logs, letting AI agents (such as Claude Code) read error outputs, dumps and BlueScreen without parsing HTML.

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Tracy 2.12 adds a parallel markdown output layer to the PHP debugging toolkit, enabling AI agents to read error information without parsing HTML. When a browser-driving agent (via Playwright, Puppeteer, or Chrome DevTools MCP) is detected using navigator.webdriver, Tracy sends BlueScreen exceptions, Tracy Bar summaries, and dumps as markdown to the JS console. Additionally, every exception HTML log file now gets a .md sibling, allowing agents to batch-process production error logs. Custom panel authors can implement getAgentInfo() to expose markdown content to agents. The Nette plugin for Claude Code includes a tracy-debugging skill that instructs agents to read console messages after each request.

Tracy Learned to Speak with AI Agents

1. Development with an agent in the browser