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Portable intent card · prediction-markets

Ethereum Up or Down 30-minute probability API

Estimate p_up and p_down for a fixed 30-minute ETH 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.

Ethereum up or down 30mETH 30 minute probability APIEthereum prediction market APIx402 ETH 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/ethereum-up-down-30m -m POST -H 'x-delx-source: intent-card-ethereum-up-or-down-30-minute-probability-api' --max-amount 0.003 -b '{"observations":[{"timestamp":1799998200,"price":4000},{"timestamp":1799998425,"price":4001.4},{"timestamp":1799998650,"price":4002.8},{"timestamp":1799998875,"price":4004.2},{"timestamp":1799999100,"price":4005.6},{"timestamp":1799999325,"price":4007},{"timestamp":1799999550,"price":4008.4},{"timestamp":1799999775,"price":4009.8}],"window_open_price":4000,"window_close_timestamp":1800000000,"market_up_price":0.48,"market_down_price":0.54,"fee_bps":50}'
Example inputPOST /api/v1/x402/ethereum-up-down-30m
{
  "observations": [
    {
      "timestamp": 1799998200,
      "price": 4000
    },
    {
      "timestamp": 1799998425,
      "price": 4001.4
    },
    {
      "timestamp": 1799998650,
      "price": 4002.8
    },
    {
      "timestamp": 1799998875,
      "price": 4004.2
    },
    {
      "timestamp": 1799999100,
      "price": 4005.6
    },
    {
      "timestamp": 1799999325,
      "price": 4007
    },
    {
      "timestamp": 1799999550,
      "price": 4008.4
    },
    {
      "timestamp": 1799999775,
      "price": 4009.8
    }
  ],
  "window_open_price": 4000,
  "window_close_timestamp": 1800000000,
  "market_up_price": 0.48,
  "market_down_price": 0.54,
  "fee_bps": 50
}
Agent discoverydelx/intent-card/v1
{
  "intent": "estimate Ethereum ETH up or down probability for the next 30 minute window",
  "tool_name": "estimate_ethereum_up_down_30m",
  "price_usdc": "0.003",
  "machine_url": "https://commerce.delx.ai/intents/ethereum-up-or-down-30-minute-probability-api.json"
}

Portable and inspectable

Share the intent, not a directory search.