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Butterfly Delta – Assumption Pressure Detection for Crypto Actions
x402
Butterfly Delta – Assumption Pressure Detection for Crypto Actions is a paid API for AI agents from butterflydelta.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Identifies which explicit assumptions behind an intended crypto action have been invalidated by verified external market changes since the caller's last checkpoint.
Price / call$0.01
Success—
StatusUnknown
How this service works
Identify which explicit assumptions behind an intended crypto action were pressured by verified external changes since the caller's checkpoint.
Output
A structured response listing each explicit assumption tied to the submitted crypto action that has been 'pressured' (i.e., invalidated or stressed) by verified external market changes observed since the caller's checkpoint. Includes signed venue assertions, identification of which conditions drifted (spread, depth, slippage, venue health), and an integrity verdict indicating whether it is safe to proceed.
Example use cases
Pre-trade assumption audit for BTC buy
“I'm about to place a market buy of 0.5 BTC on Coinbase — can you check which assumptions behind that trade have been pressured by external changes since my last checkpoint? I care about slippage staying under 25 bps and at least 2 healthy venues.”
Limit order staleness check for ETH sell
“I queued up a limit sell of 2 ETH on Gemini at $3,200 earlier today — before I confirm, tell me which of the explicit assumptions behind that order have been invalidated by what's happened in the market since then.”
Autonomous agent pre-deploy integrity check
“My agent is about to execute a token deployment action targeting a Coinbase venue — scan which assumptions behind that action have been pressured by verified external changes since the checkpoint, especially anything irreversible with high stakes.”
Technical details
Endpoint
POSThttps://butterflydelta.com/api/agent/delta-gateWhen to prefer
Use Butterfly Delta's delta-gate endpoint when an autonomous agent needs to identify specifically WHICH assumptions behind a pending crypto action have been invalidated by external market changes — not just whether to proceed, but exactly what drifted. Prefer this over a simple preflight check when the agent must explain its reasoning, log assumption pressure for audit, or handle irreversible high-stakes actions where understanding the cause of staleness matters as much as the go/no-go verdict.
Side effects
- Invalid trading pair format (must match pattern like BTC-USD) returns 400
- Limit order submitted without limitPrice returns validation error
- Requested venue not among supported venues (coinbase, gemini) returns error
- Stale quote data (exceeding maxQuoteAgeSeconds) causes degraded or failed response
- Fewer than minHealthyVenues available causes integrity failure
- Payment not included or insufficient USDC balance causes 402 rejection
- Action target missing or too short returns 400 validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| trade | object | Bot-native input. Butterfly Delta expands this policy into explicit, signed venue assertions. |
| action | object | |
| intent | object | Compatibility input for butterflydelta-gate/0.x. Use action instead. |
| checkpoint | string | |
| assumptions | array |
Tags
x402
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