Example inputPOST /api/v1/x402/volatility-sample
{
"returns": [
0.01,
-0.02,
0.015,
0
],
"periods_per_year": 365
}Portable intent card · signal-normalize
Volatility Sample API for agents
Estimate descriptive sample volatility from caller-supplied returns — call when estimating descriptive sample volatility from returns. Use on caller-supplied ticks/returns when agents need signal prep without a licensed live market feed (ottoai-class demand, first-party transform). Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip, web search, or media generation. Results are advisory; the caller owns authorization and production controls.
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/volatility-sample -m POST -H 'x-delx-source: intent-card-volatility-sample-api' --max-amount 0.003 -b '{"returns":[0.01,-0.02,0.015,0],"periods_per_year":365}'Agent discoverydelx/intent-card/v1
{
"intent": "Volatility Sample for an agent workflow",
"tool_name": "util_volatility_sample",
"price_usdc": "0.003",
"machine_url": "https://commerce.delx.ai/intents/volatility-sample-api.json"
}Portable and inspectable