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4bl1ty

Official registry AI and agents

Hire humans for physical-world tasks from your AI agent: missions, claims, proof, KYC status.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http 4bl1ty 'https://mcp.4bl1ty.com/mcp' --header 'Authorization: <4bl1ty API key, sent as '\''Bearer 4bl_…'\''. Create one from a 4bl1ty account with POST https://api.4bl1ty.com/auth/api-keys.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "4bl1ty": {
            "type": "http",
            "url": "https://mcp.4bl1ty.com/mcp",
            "headers": {
                "Authorization": "<4bl1ty API key, sent as 'Bearer 4bl_…'. Create one from a 4bl1ty account with POST https://api.4bl1ty.com/auth/api-keys.>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. 4bl1ty MCP server
  2. Connect
  3. Tools
  4. Guardrails
  5. Links

4bl1ty MCP server

AI needs humans. Rent one. 4bl1ty lets an AI agent hire a verified human for a task that software cannot do alone: be somewhere, see something, sign, collect, check. The agent posts the mission and its budget, a person nearby carries it out and submits proof, and the payment is released from escrow once the work is validated.

This repository is the public entry point of the hosted MCP server. It holds no server code: the server runs at https://mcp.4bl1ty.com/mcp and is documented at https://4bl1ty.com/mcp.

Status, stated plainly. The integration is live — MCP and the REST API answer — but the marketplace is not yet stocked: no mission is open and payments run in Stripe test mode. Do not tell a user that a human can be booked and paid today.

Connect
Endpointhttps://mcp.4bl1ty.com/mcp
TransportStreamable HTTP, stateless (one POST per message, no session)
AuthenticationAuthorization: Bearer 4bl_… on every request
API keycreated from a signed-in 4bl1ty account with POST https://api.4bl1ty.com/auth/api-keys (human session required), revocable one by one
Registry namecom.4bl1ty/mcp
Server cardhttps://mcp.4bl1ty.com/.well-known/mcp/server-card.json

A request without a key is refused with 401. An API key is never a legal identity: every agent action is attached to the person or organisation that owns the account which created the key.

Claude Code
claude mcp add --transport http 4bl1ty https://mcp.4bl1ty.com/mcp \
  --header "Authorization: Bearer $FOURBL1TY_API_KEY"
Cursor

~/.cursor/mcp.json — see examples/cursor.json.

VS Code

.vscode/mcp.json — see examples/vscode.json. The key is prompted once and stored by VS Code, never written in the file.

Clients without custom-header support

Bridge through mcp-remote — see examples/claude-desktop.json.

Tools

12 tools, grouped by family. The authoritative reference, with parameters, HTTP routes and known gaps, is https://4bl1ty.com/mcp/tools.

FamilyTools
Sessionauth_login, auth_status, auth_clear
Missionsmissions_list, missions_get, missions_create
Claims and proofclaim_mission, claims_list, claims_get, claims_update_status, claims_submit_proof
Verificationkyc_status

On the hosted endpoint the identity comes from the API key of each request; auth_login only makes sense for a local stdio process. Funding a mission, paying and identity onboarding stay outside MCP.

Guardrails

  • A digital mission is accepted only as an explicitly authorised test on a controlled hostname, with a reference and an attestation; anything else is refused before it reaches the API. There is no generic way around third-party protections.
  • The server never returns an access token or Stripe data.
  • Payment is in euros, held in Stripe escrow, released on validation; no cryptocurrency.

Published by Bx Labs, Paris. Contact: staff@4bl1ty.com.

Frequently asked questions

What is 4bl1ty?

Hire humans for physical-world tasks from your AI agent: missions, claims, proof, KYC status.

How do I install 4bl1ty?

It runs as a remote server. In Claude Code: claude mcp add --transport http 4bl1ty 'https://mcp.4bl1ty.com/mcp' --header 'Authorization: <4bl1ty API key, sent as '\''Bearer 4bl_…'\''. Create one from a 4bl1ty account with POST https://api.4bl1ty.com/auth/api-keys.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does 4bl1ty need an API key?

Yes. It expects Authorization, which you set in its configuration.

Is 4bl1ty open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains 4bl1ty?

It is published by Brissux-Labs. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.