MCP MeasureMCP Measure

index observed

Butterfly Delta Preflight

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

Should I use this

Quality & Safety

A
Description quality
90%
Schema completeness
100%
Naming quality
80%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~744Tokens (tool definitions)
~3.5 KBTypical response size
Moderate attention impact (0.58% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

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

Remote endpoints

https://butterflydelta.com/api/mcpstreamable-http

What it can do

Tool inventory

Tools (2)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢delta_peek(trade)

Free. Check whether a USD spot pair is covered and inspect the exact $0.01 Base USDC preflight price before paying.

Input Schema

{
  "type": "object",
  "properties": {
    "trade": {
      "type": "object",
      "description": "Execution policy for one intended USD-pair spot order.",
      "properties": {
        "pair": {
          "type": "string",
          "pattern": "^[A-Za-z0-9]{2,15}[-/_]USD$",
          "description": "USD spot pair, for example BTC-USD."
        },
        "maxVenueSpreadBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 10
        },
        "maxCrossVenueDivergenceBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 20
        },
        "maxQuoteAgeSeconds": {
          "type": "number",
          "minimum": 0,
          "maximum": 3600,
          "default": 10
        },
        "minHealthyVenues": {
          "type": "number",
          "minimum": 1,
          "maximum": 2,
          "default": 2
        },
        "venue": {
          "type": "string",
          "enum": [
            "coinbase",
            "gemini"
          ],
          "description": "Optional exact-order venue. Include with side and baseSize."
        },
        "side": {
          "type": "string",
          "enum": [
            "buy",
            "sell"
          ]
        },
        "orderType": {
          "type": "string",
          "enum": [
            "market",
            "limit"
          ],
          "default": "market"
        },
        "baseSize": {
          "type": "number",
          "exclusiveMinimum": 0
        },
        "limitPrice": {
          "type": "number",
          "exclusiveMinimum": 0
        },
        "maxEstimatedSlippageBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 25
        },
        "minDepthCoveragePct": {
          "type": "number",
          "minimum": 0,
          "maximum": 100,
          "default": 100
        }
      },
      "required": [
        "pair"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "trade"
  ],
  "additionalProperties": false
}
🟡delta_preflight(trade)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "trade": {
      "type": "object",
      "description": "Execution policy for one intended USD-pair spot order.",
      "properties": {
        "pair": {
          "type": "string",
          "pattern": "^[A-Za-z0-9]{2,15}[-/_]USD$",
          "description": "USD spot pair, for example BTC-USD."
        },
        "maxVenueSpreadBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 10
        },
        "maxCrossVenueDivergenceBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 20
        },
        "maxQuoteAgeSeconds": {
          "type": "number",
          "minimum": 0,
          "maximum": 3600,
          "default": 10
        },
        "minHealthyVenues": {
          "type": "number",
          "minimum": 1,
          "maximum": 2,
          "default": 2
        },
        "venue": {
          "type": "string",
          "enum": [
            "coinbase",
            "gemini"
          ],
          "description": "Optional exact-order venue. Include with side and baseSize."
        },
        "side": {
          "type": "string",
          "enum": [
            "buy",
            "sell"
          ]
        },
        "orderType": {
          "type": "string",
          "enum": [
            "market",
            "limit"
          ],
          "default": "market"
        },
        "baseSize": {
          "type": "number",
          "exclusiveMinimum": 0
        },
        "limitPrice": {
          "type": "number",
          "exclusiveMinimum": 0
        },
        "maxEstimatedSlippageBps": {
          "type": "number",
          "minimum": 0,
          "maximum": 10000,
          "default": 25
        },
        "minDepthCoveragePct": {
          "type": "number",
          "minimum": 0,
          "maximum": 100,
          "default": 100
        }
      },
      "required": [
        "pair"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "trade"
  ],
  "additionalProperties": false
}

Community

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Evidence

Recent observations

verifiedversion not recorded2 tools
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verifiedversion not recorded2 tools
verifiedversion not recorded2 tools
verifiedversion not recorded2 tools
verifiedversion not recorded2 tools