# Crucible

> Use this tool when you need to automate web interactions, scrape content, or perform testing workflows with a high degree of stealth and evasion capabilities. Crucible provides a comprehensive interface for navigation, element interaction, and content extraction, accepting inputs such as automation scripts and browser session configurations, and outputting extracted data and file downloads. Ideal for use cases requiring parallel automation workflows and bot detection evasion, such as web scraping and AI agent control.

Canonical page: https://skillsregistry.net/skills/joshfng-crucible  
JSON: https://api.skillsregistry.net/v1/skills/joshfng-crucible

## Description

Crucible is an MCP server for browser automation using Ferrum and headless Chrome. It provides comprehensive web interaction capabilities including navigation, element interaction, content extraction, cookie management, and file downloads. The server supports multiple named browser sessions for parallel automation workflows and features stealth mode with three profiles (minimal, moderate, maximum) that apply evasion techniques to bypass bot detection systems. Designed for AI agent control, web scraping, and testing workflows.

## Trust

- **Trust score (0–1):** 0.98
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** browser-automation
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/joshfng-crucible)
- **Repository:** <https://github.com/joshfng/crucible>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "joshfng-crucible"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/joshfng-crucible` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/joshfng-crucible/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt