Prufa

What is Prufa?

Prufa is a QA agent for web applications that audits URLs for broken flows, JS console errors, missing tracking, consent violations, security headers, mobile tap targets, accessibility, and more. It integrates with coding agents via MCP (Model Context Protocol) to provide automated audits and reports. It is for developers who want to catch critical bugs before users do.

How to use Prufa?

Install prufa-mcp via pipx or pip, get a free API key from prufa.dev, then wire the MCP server into your agent (e.g., Claude Code, Cursor, Cline, Continue) using stdio subprocess. Use tools like prufa_run_audit to audit URLs and prufa_get_report to fetch reports.

Key features of Prufa

• One-shot public-page audit with JSON report.
• 44 tools for audits, flows, monitors, chaos QA, and discovery.
• Multi-step flow testing from plain-text test cases.
• Scheduled monitors with deploy-hook integration.
• Gremlin chaos QA imitating difficult users.
• Full-auto site discovery to draft meaningful flows.

Use cases of Prufa

• Audit a deployed Next.js app for critical bugs.
• Verify client-side routing on a Vite SPA.
• Check payment flow on a Stripe checkout page.
• Set up a monitor to watch a URL or flow on a schedule.
• Run a gremlin to imitate a difficult user and detect what breaks.

FAQ from Prufa

How do I get a Prufa API key?

Sign in at prufa.dev (Google OAuth) and create an API key from the dashboard. The first audit is free, no card required.

How do I wire prufa-mcp into Claude Code?

Use claude mcp add with the absolute binary path and set the environment variable PRUFA_API_TOKEN. Restart Claude Code to see the tools.

What audits does Prufa perform?

It checks broken flows, JS console errors, missing tracking, consent violations, security headers, mobile tap targets, accessibility, and more. Findings are graded A–F with severity, impact, and fix hints.

Is there a free trial?

Yes, prufa_setup_workspace creates a free agent_temp workspace with a 7-day trial and included credit budget. Monitors, discovery, and gremlins work during the trial.

How do I use Prufa in a GitHub Action?

Install prufa-mcp and set PRUFA_API_TOKEN as a secret. Run a Python script to call run_audit and fail the PR on critical regressions.