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Portable intent card · prediction-markets

Bitcoin Up or Down 15-minute probability API

Estimate p_up and p_down for a fixed 15-minute BTC window from caller-supplied observations for $0.003. Conservative local math, explicit input quality and model limits; no live feed, venue access, trade, or accuracy guarantee.

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Intent to transaction

One command, attributed.

The source header follows this discovery route through challenge, payment and delivery without exposing the buyer or request body.

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/bitcoin-up-down-15m -m POST -H 'x-delx-source: intent-card-bitcoin-up-or-down-15-minute-probability-api' --max-amount 0.003 -b '{"observations":[{"timestamp":1799999100,"price":100000},{"timestamp":1799999212,"price":100035},{"timestamp":1799999324,"price":100070},{"timestamp":1799999436,"price":100105},{"timestamp":1799999548,"price":100140},{"timestamp":1799999660,"price":100175},{"timestamp":1799999772,"price":100210},{"timestamp":1799999884,"price":100245}],"window_open_price":100000,"window_close_timestamp":1800000000,"market_up_price":0.48,"market_down_price":0.54,"fee_bps":50}'
Example inputPOST /api/v1/x402/bitcoin-up-down-15m
{
  "observations": [
    {
      "timestamp": 1799999100,
      "price": 100000
    },
    {
      "timestamp": 1799999212,
      "price": 100035
    },
    {
      "timestamp": 1799999324,
      "price": 100070
    },
    {
      "timestamp": 1799999436,
      "price": 100105
    },
    {
      "timestamp": 1799999548,
      "price": 100140
    },
    {
      "timestamp": 1799999660,
      "price": 100175
    },
    {
      "timestamp": 1799999772,
      "price": 100210
    },
    {
      "timestamp": 1799999884,
      "price": 100245
    }
  ],
  "window_open_price": 100000,
  "window_close_timestamp": 1800000000,
  "market_up_price": 0.48,
  "market_down_price": 0.54,
  "fee_bps": 50
}
Agent discoverydelx/intent-card/v1
{
  "intent": "estimate Bitcoin BTC up or down probability for the next 15 minute window",
  "tool_name": "estimate_bitcoin_up_down_15m",
  "price_usdc": "0.003",
  "machine_url": "https://commerce.delx.ai/intents/bitcoin-up-or-down-15-minute-probability-api.json"
}

Portable and inspectable

Share the intent, not a directory search.