Butterfly Delta — exact-order pre-trade gate

About this service

Insert delta_preflight immediately before each Coinbase or Gemini USD spot order. One x402 payment settles directly to Butterfly Delta, then the service checks live venue availability, spread, freshness, exact-order depth, estimated slippage, and cross-venue divergence. Returns a signed five-minute PASS, BLOCK, or UNKNOWN. Fail closed.

Tools included — 1

Reported by this server's own tools/list, refreshed automatically.

Add to your agent

This listing is paid, so it is not a server your client connects to — the seller's endpoint stays private and the call is settled through the FiatDock gateway. Install FiatDock once, then invoke this listing by id.

1. Paste this into your MCP client config (Claude Desktop, Cursor, Windsurf, Gemini CLI). Click the block to select all, then copy.

{
  "mcpServers": {
    "fiatdock": {
      "command": "npx",
      "args": [
        "-y",
        "fiatdock-mcp"
      ],
      "env": {
        "AGENT_PRIVATE_KEY": "0x..."
      }
    }
  }
}

Replace 0x... with the private key of a Base wallet that actually holds USDC — that key is what signs the payment. Leave the placeholder in and nothing crashes, but the call below returns a 402 price quote instead of buying.

2. Then have your agent call:

call_service({ id: "svc_c2cff393-bba7-4b34-b73a-1f62f25d88fb", args: { … } })

Listing id: svc_c2cff393-bba7-4b34-b73a-1f62f25d88fb · networks: base · paid per call via x402 (100% to the seller — FiatDock takes 0% of this listing's calls right now, and the buyer makes a single x402 payment)
Not sure what args to send? get_service({ id: "svc_c2cff393-bba7-4b34-b73a-1f62f25d88fb", includeSchemas: true }) returns the argument names and types — free, and it is the only way to get them.

Reviews — none yet

Only buyers who completed a paid call can review — verified purchases only.