Your AI agent,
on any website.

the MCP

A free, open-source MCP that gives your AI 70+ browser-control tools. Drives a real Chrome on your machine — your cookies, your fingerprint, your session.

a thread

A small file that teaches the MCP exactly how one website works — its buttons, forms, quirks, anti-bot moves. Authored by people who use that site daily.

Install the MCP free. Install a Thread for the site you want. Tell your agent what to do, walk away.

70 sites live · $4–12 one-time · free updates forever · engine free

16 founder-proven54 early draftsfree updates forever

Some things APIs will never automate.

APIs cover the compute side. WebLoom covers the human-shaped half that doesn't fit into any API.

  • 01The 14 fields you have to fill in to claim an affiliate link
  • 02Posting to Twitter past the free API's 2-tweets-a-day cap, on your own account
  • 03Submitting a bid on Upwork that wants 200 chars of “why you” and a custom rate
  • 04Re-uploading a product image on Gumroad because the UI keeps eating it
  • 05Switching a setting buried 4 menus deep in a SaaS admin you visit once a quarter
  • 06Filling out the same profile across LinkedIn, GitHub, Substack, Dev.to, Bsky

The list grows every day. Every gap becomes a Thread. Every Thread cuts 30 to 90 minutes off someone's day.

powered by

The MCP that powers WebLoom is free + open source.

80+ tools. Framework-aware. Vision-fallback. Self-healing. Multi-agent. Local-first. Runs on YOUR Chrome with YOUR cookies. The marketplace exists because the MCP can execute Threads better than anything else. The MCP exists because the agent web deserves open infrastructure.

at a glance
  • MCP tools70+
  • LicenseMIT
  • Runs onyour machine
  • Cost$0
  • Cred storagenever leaves
01Buyer
Install a Thread.

Pick a website you use, buy its Thread once, your AI agent gets fast on it. $4–12 one-time. Yours forever. The MCP is always free.

02Author
Author a Thread.

WebLoom Threads is curator-led. Email us the site you know cold and the workflow you can ship; we invite a small group of authors as the catalogue grows.

№ 02 — how it works

A plugin that
learns as you use it.

WebLoom is a free plugin for Claude Code, Cursor, Claude Desktop, and any AI client that supports MCP. It adds 62 browser-control tools and a learning loop that records every successful action you take.

01
Drop the install file into your AI chat

Download webloom-install.md. Drag it into Claude Code, Cursor, Continue, Cline, or any MCP-aware client. Your AI reads the file, clones the MCP, makes the folders, edits the MCP config. 80+ browser tools live on the next message.

Download webloom-install.md
⬇ webloom-install.md
       ↓
  drag into AI chat
       ↓
  ✓ engine cloned
  ✓ ~/.webloom/ folders created
  ✓ MCP config updated
  ✓ 62 tools live
02
Use websites — normally

Tell your AI to do whatever you'd normally do — sign up for an affiliate program, publish a book, claim a quest, fill a profile. Every successful click + fill + upload silently records to your playbook file. No extra step. Your daily work IS the data.

> Sign me up for HubSpot's affiliate program.

   …agent fills the form…

playbook file updates automatically:
  ✓ Fill business info     [cdp]  ×3
  ✓ Verify email           [js]   ×1
  ✓ Submit application     [cdp]  ×1
  ✓ Configure payout       [cdp]  ×2
03
Tell your AI: package this as a Thread

When you're done driving the site, one line in your AI chat bundles every successful action into a single Thread file. Selectors, click strategies, file uploads, field types, wait times — all in one .thread.json file you can share or sell.

> Package my work on hubspot.com as a Thread.

  ✓ 7 proven actions bundled
  ✓ saved to ~/.webloom/threads/
        hubspot.com.thread.json

   ← this file IS the Thread
04
Invited authors ship Threads

WebLoom Threads is curator-led. A small invited group of authors ships hardened Threads for the sites that matter. Apply at dev@webloom.run with a domain you know cold and the workflow you can guarantee.

~/.webloom/threads/
  └── hubspot.com.thread.json
                ↓
      reviewed + merged by WebLoom
                ↓
  ✓ live at /thread/hubspot.com
  ✓ shipped to every install on the next tick
№ 04 — WebLoom Pro

$10/mo.
Every paid Thread.

One flat subscription, every current and future paid Thread, no per-Thread checkout. Cancel any time. Pay-per-Thread is still there if you only need one.

what Pro unlocks
  • Install any paid Thread from chat, no checkout flow.
  • Every new Thread we ship — automatic, no extra payment.
  • Free drift patches forever — when a site changes, the Thread updates and your agent stays working.
  • Cancel any time; one-click via the dashboard.
№ 05 — install
One file.
One drop.
Engine live.

Download webloom-install.md and drag it into your AI chat. Claude Code, Cursor, Continue, Cline — any MCP-aware client reads the file and runs the install for you. No copy-paste, no manual config.

After install — where everything lives
~/.webloom/
  ├── engine/             ← the MCP server
  ├── threads/            ← your Threads land here
  │     └── *.thread.json
  ├── playbook.json       ← your learning
  └── logs/
Drop this into your AI chatrecommended

webloom-install.md

1.2 KB · drag into Claude / Cursor / Continue

Download install file
Your AI installs everything. 62 tools live on next message.docs →
or: copy the install prompt instead
Install WebLoom MCP for me.

1. Clone the engine:
   git clone https://github.com/webloomhq/engine ~/.webloom/engine

2. Install deps:
   cd ~/.webloom/engine && pip install -r requirements.txt

3. Create playbook dirs:
   mkdir -p ~/.webloom/threads ~/.webloom/logs

4. Add this to my MCP config (~/.mcp.json under "mcpServers"):
   "webloom": {
     "type": "stdio",
     "command": "python",
     "args": ["~/.webloom/engine/server.py"]
   }

After that, 62 browser-control tools become available and a local playbook
at ~/.webloom/ fills automatically as I drive websites. Any Threads I drop
in ~/.webloom/threads/ merge into the playbook at runtime.