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Readme

@proxyhuman/mcp

ProxyHuman MCP server — let an AI agent ask a human for help with a browser-based task (signing in, solving a captcha, completing 2FA, reading an OTP from email/SMS, entering payment info, picking a subjective option) and get back a structured log of what the human did.

Pairs with the proxyhuman Agent Skill at aidenlabsdotdev/skills, installed via npx skills add aidenlabsdotdev/skills --skill proxyhuman --agent <harness> — the skill is the SKILL.md that tells the agent when to reach for this MCP.

Install

# 1. Install the MCP server (this package)
npm i -g @proxyhuman/mcp

# 2. Sign up — a Clerk-issued long-lived API key is saved to
#    ~/.proxyhuman/config.json. Verification OTP is sent to your email.
proxyhuman sign-up --email you@example.com
proxyhuman verify <code-from-email>

# 3. Register the MCP in your harness:
claude mcp add proxyhuman -- proxyhuman-mcp
#   or for Hermes / Codex / Cursor / etc., the harness-specific equivalent

The npm i -g postinstall fetches a WHIP-capable ffmpeg 8.1 (BtbN on Linux/ Windows, evermeet.cx on macOS) and stages it in the package's bin/. ~134 MB one-time download, used by the MCP to publish the browser's screencast to Cloudflare Realtime SFU.

Two bins

Binary	Purpose
`proxyhuman-mcp`	The stdio MCP server. Register this with your harness.
`proxyhuman`	CLI for `sign-up`, `verify`, `me`, and `config show/get/set`.

MCP tools

Tool	Description
`open_browser_handoff_link`	Mints a viewer URL that mirrors the agent's Chrome to the human's phone/desktop. Does NOT notify — your harness owns the messaging channel.
`wait_for_human_handback`	Blocks until the human clicks "return control to agent" (or timeout). Returns the structured action log and final page URL.

Config resolution (priority order)

Setting	Order
`api_key`	tool arg → `PROXYHUMAN_API_KEY` env → `~/.proxyhuman/config.json`
`api_url`	tool arg → `PROXYHUMAN_API` env → `~/.proxyhuman/config.json` → `https://api.proxyhuman.ai`
`cdp_target`	tool arg → `PROXYHUMAN_CDP` env → `~/.hermes/config.yaml::browser.cdp_url` → probe localhost ports → default

How it talks to the rest of the system

agent → @proxyhuman/mcp (this) ──┐
                                  │ HTTP/WS
                                  ▼
                           api.proxyhuman.ai
                          (Worker + Durable Object)
                                  │
                                  ▼
                       Cloudflare Realtime SFU
                                  ▲
                                  │ WebRTC (UDP)
                                  ▼
                       human's phone/desktop
                          (app.proxyhuman.ai)

@proxyhuman/mcp runs on the customer's machine (it needs CDP access to a local Chrome and a local ffmpeg). Everything else is hosted on Cloudflare.

Source

Developed by Aiden Labs. This repo (aidenlabsdotdev/proxyhuman-mcp) is what npm publishes from — issues and PRs welcome here.