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@breach-kit/agent
@breach-kit/agent/dist/index.js

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Readme

FastTest Agent

An MCP server that turns your coding agent into a QA engineer. Test, explore, and break web apps using Playwright -- driven entirely by your AI's reasoning.

npx -y @fasttest-ai/qa-agent install

What it does

FastTest Agent is a Model Context Protocol server that gives coding agents (Claude Code, Cursor, Windsurf, VS Code Copilot, Codex) the ability to:

Test web applications by driving a real browser
Explore apps to discover pages, forms, and flows
Heal broken CSS selectors automatically
Save tests as reusable suites for CI/CD replay and in editor replay
Break apps with adversarial inputs (chaos mode)

The MCP server provides browser tools and structured prompts.

How it works

Your IDE (Claude Code, Cursor, etc.)
  │
  ├── Reasoning (your coding agent)
  │
  └── Tools (this MCP server)
        ├── browser_navigate, browser_click, browser_fill, ...
        ├── test, explore, chaos, vibe_shield
        ├── heal (selector self-repair)
        └── save_suite, run (cloud features)

You say "test the login flow"
The test tool navigates to the URL, captures a page snapshot, and returns testing instructions
Your coding agent reads the snapshot and drives browser tools to execute tests
Results are reported inline. Optionally, save as a suite for CI/CD.

Installation

Works with Claude Code, Cursor, Windsurf, VS Code Copilot, Codex, and Antigravity:

npx -y @fasttest-ai/qa-agent install

The installer auto-detects your IDE and configures the MCP server.

Manual setup

If your IDE isn't detected, add this to your MCP configuration:

{
  "mcpServers": {
    "fasttest": {
      "command": "npx",
      "args": ["-y", "@fasttest-ai/qa-agent"]
    }
  }
}

Quick start

Once installed, just ask your coding agent:

"Test the login flow"
"Explore my app and find all testable flows"
"Break my signup page"

Tools

Browser tools (16)

Direct Playwright wrappers for page interaction:

Tool	Description
`browser_navigate`	Navigate to a URL
`browser_click`	Click an element
`browser_fill`	Fill a form field
`browser_fill_form`	Fill multiple fields at once
`browser_screenshot`	Capture a screenshot
`browser_snapshot`	Get the accessibility tree
`browser_assert`	Run assertions (visible, hidden, text, URL, count, attribute)
`browser_wait`	Wait for an element or timeout
`browser_press_key`	Press keyboard keys
`browser_evaluate`	Execute JavaScript
`browser_console_logs`	Get console log messages
`browser_save_session`	Save cookies/localStorage
`browser_restore_session`	Restore a saved session
`browser_go_back` / `browser_go_forward`	History navigation
`browser_handle_dialog`	Accept/dismiss alerts
`browser_file_upload`	Upload files
`browser_drag`	Drag and drop
`browser_resize`	Resize viewport
`browser_tabs`	Manage browser tabs
`browser_network_requests`	List captured network requests

Domain tools (14)

Higher-level tools that return structured prompts for your coding agent:

Tool	Description
`test`	Test a web app (navigates, snapshots, returns testing instructions)
`explore`	Discover pages, forms, and flows
`chaos`	Adversarial testing for stability and edge cases
`vibe_shield`	One-command safety net: explore, generate tests, run regressions
`heal`	Fix broken CSS selectors using multiple strategies
`setup`	Authenticate with FastTest cloud (device auth flow)
`save_suite`	Save tests as a reusable suite
`update_suite`	Update existing test cases
`run`	Execute a saved test suite
`status`	Check execution status
`cancel`	Cancel a running execution
`list_projects`	List QA projects
`list_suites`	List test suites
`health`	Check backend connectivity
`healing_history`	View selector healing patterns

Cloud features (optional)

FastTest Agent works fully offline with browser tools. For persistent test suites, CI/CD replay, regression tracking, and a dashboard, connect to FastTest Cloud:

> Use the setup tool to connect to FastTest cloud

This opens a browser for secure device authentication. Once connected:

save_suite persists tests for replay
run executes suites and tracks regressions
vibe_shield on subsequent calls shows what broke since last run
CI runner (fasttest-ci) runs suites in GitHub Actions

CI/CD usage

# .github/workflows/tests.yml
- name: Run FastTest suite
  run: npx -y @fasttest-ai/qa-agent ci --api-key ${{ secrets.FASTTEST_API_KEY }} --suite-id ${{ vars.SUITE_ID }}

Use {{VAR_NAME}} placeholders in test steps for secrets (passwords, API keys). The runner resolves them from environment variables at execution time.

CLI flags

--api-key <key>     Organization API key
--base-url <url>    Cloud API URL (default: https://api.fasttest.ai)
--headed            Show browser window (debug mode)
--browser <type>    chromium | firefox | webkit (default: chromium)

License

Apache-2.0

node /Users/rajat/reposs/afbp/local-skill/dist/install.js uninstall --ide claude-code node /Users/rajat/reposs/afbp/local-skill/dist/install.js install --ide claude-code