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Butterfly Delta Preflight

by butterflydelta.com · remote · no sign-in to list tools · v1.1.0 · published by com.butterflydelta

Signed exact-order pre-submit gate for crypto bots using live Coinbase and Gemini execution data.

Changes · 2
CompareRegistry entry

2 tools: 2 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 2Claude Code: ask
  • delta_peekFree.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Free. Check whether a USD spot pair is covered and inspect the exact $0.01 Base USDC preflight price before paying.
  • delta_preflightPaid via x402 or MPP: $0.01 USDC on Base.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    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 from live availability, spread, freshness, depth, slippage, and divergence checks. Fail closed on BLOCK or UNKNOWN.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__preflight__delta_peek",
      "mcp__preflight__delta_preflight"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as preflight. Review it before you use it.