Butterfly Delta Preflight

com.butterflydelta/preflightVersion 1.1.0

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

Status

Responds144 msNov 14, 2026, 13:50 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://butterflydelta.com/api/mcpResponds144 msNov 14, 2026, 13:50 UTC

No sign-in

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

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Settings > Connectors > Add custom connector
Name: preflight
Remote MCP server URL: https://butterflydelta.com/api/mcp

{
  "mcpServers": {
    "preflight": {
      "url": "https://butterflydelta.com/api/mcp"
    }
  }
}

code --add-mcp '{"name":"preflight","type":"http","url":"https://butterflydelta.com/api/mcp"}'

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2 tools

Tools of Butterfly Delta Preflight
	Description		Read-only	Idempotent	Open world
`delta_peek`Free. Check whether a USD spot pair is covered and inspect the exact $0.01 Base USDC preflight price before paying.	Free. Check whether a USD spot pair is covered and inspect the exact $0.01 Base USDC preflight price before paying.	Not declared	Not declared	Not declared	Not declared
`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 from live availability, spread, freshness, depth, slippage, and divergence checks. Fail closed on BLOCK or UNKNOWN.	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.	Not declared	Not declared	Not declared	Not declared

Registry status: Active
Published: Aug 20, 2026
Updated: Aug 20, 2026
Website: https://butterflydelta.com/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared