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Portable intent card · prediction-markets

Bitcoin Up or Down 30-minute probability API

Estimate p_up and p_down for a fixed 30-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.

Bitcoin up or down 30mBTC 30 minute probability APIBitcoin prediction market APIx402 BTC signalshort horizon crypto probability

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-30m -m POST -H 'x-delx-source: intent-card-bitcoin-up-or-down-30-minute-probability-api' --max-amount 0.003 -b '{"observations":[{"timestamp":1799998200,"price":100000},{"timestamp":1799998425,"price":100035},{"timestamp":1799998650,"price":100070},{"timestamp":1799998875,"price":100105},{"timestamp":1799999100,"price":100140},{"timestamp":1799999325,"price":100175},{"timestamp":1799999550,"price":100210},{"timestamp":1799999775,"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-30m
{
  "observations": [
    {
      "timestamp": 1799998200,
      "price": 100000
    },
    {
      "timestamp": 1799998425,
      "price": 100035
    },
    {
      "timestamp": 1799998650,
      "price": 100070
    },
    {
      "timestamp": 1799998875,
      "price": 100105
    },
    {
      "timestamp": 1799999100,
      "price": 100140
    },
    {
      "timestamp": 1799999325,
      "price": 100175
    },
    {
      "timestamp": 1799999550,
      "price": 100210
    },
    {
      "timestamp": 1799999775,
      "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 30 minute window",
  "tool_name": "estimate_bitcoin_up_down_30m",
  "price_usdc": "0.003",
  "machine_url": "https://commerce.delx.ai/intents/bitcoin-up-or-down-30-minute-probability-api.json"
}

Portable and inspectable

Share the intent, not a directory search.