Butterfly Delta Preflight MCP Server

by butterflydelta Your server? Claim it

answering

Butterfly Delta Preflight is answering right now. Last checked 11 min ago. It exposes 2 tools.

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

Uptime history 83 days of history · worst day 98%

83 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

801 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Butterfly Delta Preflight every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

Settings → Connectors → Add custom connector, then paste this address

https://butterflydelta.com/api/mcp

~/.codex/config.toml

[mcp_servers.preflight]
url = "https://butterflydelta.com/api/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "preflight": {
      "type": "http",
      "url": "https://butterflydelta.com/api/mcp"
    }
  }
}

Available tools 2

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

delta

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 from live availability, spread, freshness, depth, slippage, and divergence checks. Fail closed on BLOCK or UNKNOWN.

Endpoints

URL	Transport	State	Latency	Checked
https://butterflydelta.com/api/mcp	streamable-http	answering	164 ms	11 min ago

Alternatives to Butterfly Delta Preflight

same job, measured the same way

Convex Lake

by hsergeyf

Trade, orderbook, and volatility data for prediction markets and crypto derivatives.

answering

CoinGraph

by coingraph

Pre-trade crypto intelligence: survival rating, order-book depth, unlocks and contract flags.

22 tools answering

Crypto Data & Market Analysis Agent

by dopionut-jpg

Crypto positioning and macro for agents: funding, open interest, execution cost, volatility

18 tools answering

Flyto Core

by flytohub

Execution engine for AI agents. 412 modules: browser, file, Docker, data, crypto.

2 549 installs/wk local only

MarketCrew — live market data & stock analysis

by marketcrew

Stock prices, charts & technical analysis for US stocks, ETFs and crypto. Read-only, no signup.

15 tools answering

Agent Web Reader

by charliemorrison

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

3 tools answering

Fensory

by fensory

Trading MCP server for AI agents, with live market data, account reads and controlled execution.

answering

Crypto Derivatives Data API

by duoleads-derivs

Perp funding rates, open interest, futures basis, IV, liquidations, order books on 8 exchanges

10 tools answering

Butterfly Delta Preflight — questions

Answers built from our own checks of this server.

What can Butterfly Delta Preflight do?

It exposes 2 tools, read directly from the server on our last check. Among them: delta_peek, delta_preflight. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Butterfly Delta Preflight working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 801 ms. The bar chart above shows every period we have measured.

How do I connect Butterfly Delta Preflight?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Butterfly Delta Preflight need an API key?

No. Butterfly Delta Preflight completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Butterfly Delta Preflight?

It answers our handshake in 801 ms on average, which is faster than 9% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.