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Archipelago on Arc

Official registry Finance and payments

Buy Archipelago's Arc token reports, exit costs and wallet balances over x402, within caps you set.

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 @archipelagodex/archipelago-x402-mcp
Claude Code 
claude mcp add archipelago-on-arc -e 'BUYER_PRIVATE_KEY_FILE=<BUYER_PRIVATE_KEY_FILE>' -e 'BUYER_PRIVATE_KEY=<your buyer_private_key>' -e 'ARCHIPELAGO_X402_MAX_PER_CALL=0.02' -e 'ARCHIPELAGO_X402_BUDGET=0.25' -- npx -y @archipelagodex/archipelago-x402-mcp@0.1.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "archipelago-on-arc": {
            "command": "npx",
            "args": [
                "-y",
                "@archipelagodex/archipelago-x402-mcp@0.1.0"
            ],
            "env": {
                "BUYER_PRIVATE_KEY_FILE": "<BUYER_PRIVATE_KEY_FILE>",
                "BUYER_PRIVATE_KEY": "<your buyer_private_key>",
                "ARCHIPELAGO_X402_MAX_PER_CALL": "0.02",
                "ARCHIPELAGO_X402_BUDGET": "0.25"
            }
        }
    }
}

Environment variables

  • BUYER_PRIVATE_KEY_FILE Path of a file whose first word is the private key of a dedicated wallet that holds only the USDC (on Arc) you are willing to spend. Without a key only the free tools appear.
  • BUYER_PRIVATE_KEY secret The same private key given directly, for a client that keeps its configuration private. A key file is safer: a key typed into a command line lands in shell history.
  • ARCHIPELAGO_X402_MAX_PER_CALL The most one call may cost, in USDC (at most 1).
  • ARCHIPELAGO_X402_BUDGET The most to count as paid or reserved per UTC day, in USDC, across restarts.

Frequently asked questions

What is Archipelago on Arc?

Buy Archipelago's Arc token reports, exit costs and wallet balances over x402, within caps you set.

How do I install Archipelago on Arc?

It runs on your machine. In Claude Code: claude mcp add archipelago-on-arc -e 'BUYER_PRIVATE_KEY_FILE=<BUYER_PRIVATE_KEY_FILE>' -e 'BUYER_PRIVATE_KEY=<your buyer_private_key>' -e 'ARCHIPELAGO_X402_MAX_PER_CALL=0.02' -e 'ARCHIPELAGO_X402_BUDGET=0.25' -- npx -y @archipelagodex/archipelago-x402-mcp@0.1.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Archipelago on Arc need an API key?

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

Who maintains Archipelago on Arc?

It is published by RunTimeAdmin. 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.