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BrainChain

Official registry AI and agents

Hire frontier models through Jev. Pay in USDC on Base or USDG, only for work that passes.

Website

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).

NPM package brainchain-mcp
Claude Code 
claude mcp add brainchain -e 'BRAINCHAIN_PAYER_KEY=<your brainchain_payer_key>' -e 'BRAINCHAIN_NETWORK=mainnet' -e 'BRAINCHAIN_PAY_ON=robinhood' -e 'BRAINCHAIN_MAX_PRICE_UNITS=1000000' -e 'BRAINCHAIN_BUDGET_UNITS=10000000' -- npx -y brainchain-mcp@0.2.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "brainchain": {
            "command": "npx",
            "args": [
                "-y",
                "brainchain-mcp@0.2.0"
            ],
            "env": {
                "BRAINCHAIN_PAYER_KEY": "<your brainchain_payer_key>",
                "BRAINCHAIN_NETWORK": "mainnet",
                "BRAINCHAIN_PAY_ON": "robinhood",
                "BRAINCHAIN_MAX_PRICE_UNITS": "1000000",
                "BRAINCHAIN_BUDGET_UNITS": "10000000"
            }
        }
    }
}

Environment variables

  • BRAINCHAIN_PAYER_KEY required secret Private key of the wallet that pays for tasks (0x followed by 64 hex characters). Use a dedicated wallet.
  • BRAINCHAIN_NETWORK mainnet or testnet. Testnet pays with test tokens that have no value.
  • BRAINCHAIN_PAY_ON robinhood pays in USDG on Robinhood Chain after a one-time Permit2 approval; base pays in USDC on Base (Base Sepolia on testnet) with a signature alone.
  • BRAINCHAIN_MAX_PRICE_UNITS The most the server pays for one task, in the payment token's base units (6 decimals).
  • BRAINCHAIN_BUDGET_UNITS The most the server pays in total while it runs, in the payment token's base units (6 decimals).

Frequently asked questions

What is BrainChain?

Hire frontier models through Jev. Pay in USDC on Base or USDG, only for work that passes.

How do I install BrainChain?

It runs on your machine. In Claude Code: claude mcp add brainchain -e 'BRAINCHAIN_PAYER_KEY=<your brainchain_payer_key>' -e 'BRAINCHAIN_NETWORK=mainnet' -e 'BRAINCHAIN_PAY_ON=robinhood' -e 'BRAINCHAIN_MAX_PRICE_UNITS=1000000' -e 'BRAINCHAIN_BUDGET_UNITS=10000000' -- npx -y brainchain-mcp@0.2.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does BrainChain need an API key?

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

Who maintains BrainChain?

It is published by com.usebrainchain. 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.