# Butterflydelta Preflight MCP server

Source: https://glimind.com/server/mcp-registry%2Fcom.butterflydelta%2Fpreflight
Registry id: `mcp-registry/com.butterflydelta/preflight`
Status: live (checked 2026-10-26T23:51:01.329Z)

## Measurements (30 days)

- Uptime: 99.95%
- Checks: 4897
- Outages (90 days): 7

## Install

```json
{
  "mcpServers": {
    "butterflydelta-preflight-mcp-server": {
      "type": "http",
      "url": "https://butterflydelta.com/api/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http butterflydelta-preflight-mcp-server https://butterflydelta.com/api/mcp
```

## Tools (2)

- `delta_peek`: Free. Check whether a USD spot pair is covered and inspect the exact $0.01 Base USDC preflight price before paying.
- `delta_preflight`: Paid via x402 or MPP: $0.01 USDC on Base. Send the exact order venue, side, and size immediately before submission to obtain a signed PASS, BLOCK, or UNKNOWN fr

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.