BrainChain

com.usebrainchain/brainchain

Hire a frontier model for a task and pay in USDG or USDC only for work that meets the bar you set.

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Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "brainchain": {
      "command": "npx",
      "args": [
        "-y",
        "brainchain-mcp@0.8.0"
      ],
      "env": {
        "BRAINCHAIN_PAYER_KEY": "<your BRAINCHAIN_PAYER_KEY>",
        "BRAINCHAIN_NETWORK": "mainnet",
        "BRAINCHAIN_PAY_ON": "robinhood",
        "BRAINCHAIN_MAX_PRICE_UNITS": "1000000",
        "BRAINCHAIN_MAX_BOND_UNITS": "10000000",
        "BRAINCHAIN_BUDGET_UNITS": "10000000"
      }
    }
  }
}
Environment variables
  • BRAINCHAIN_PAYER_KEYsecretPrivate key of the wallet that pays for tasks, 64 hex characters with or without 0x. Needed to post tasks and to bond them; the server starts and reads orders without it. Use a wallet that holds only what you plan to spend.
  • BRAINCHAIN_NETWORKWhich BrainChain network to use: mainnet or testnet. Testnet payments use test tokens with no value.
  • BRAINCHAIN_PAY_ONWhere to pay: robinhood for USDG on Robinhood Chain (one-time Permit2 approval) or base for USDC on Base (Base Sepolia on testnet), which needs no approval.
  • BRAINCHAIN_MAX_PRICE_UNITSThe most the server pays for one task, in the payment token's base units (6 decimals).
  • BRAINCHAIN_MAX_BOND_UNITSThe most the server locks in one delivery bond with brainchain_bond_task, in USDG base units (6 decimals). Bonds also count against the budget and the daily limit.
  • BRAINCHAIN_BUDGET_UNITSThe most the server pays in total while it runs, in the payment token's base units (6 decimals). Resets when the server restarts.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category
AI & ML
Version
0.8.0
Registry
active
Published
11/7/2026

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Add the badge to your site

Show visitors that BrainChain is listed here — it’s also the link we check for a free listing.

BrainChain — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/com-usebrainchain-brainchain?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="BrainChain — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![BrainChain — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/com-usebrainchain-brainchain?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.