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Portable intent card · agent-ops-math

In Range API for agents

Check whether a value sits in [min,max]. Call when you preflight budgets, scores, or clamp decisions. Returns boolean in_range with bounds for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, and production controls.

In Range APIIn Range for agentspay per result APIx402 APIno API key

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/in-range -m POST -H 'x-delx-source: intent-card-in-range-api' --max-amount 0.001 -b '{"value":3,"min":0,"max":10}'
Example inputPOST /api/v1/x402/in-range
{
  "value": 3,
  "min": 0,
  "max": 10
}
Agent discoverydelx/intent-card/v1
{
  "intent": "In Range for an agent workflow",
  "tool_name": "util_in_range",
  "price_usdc": "0.001",
  "machine_url": "https://commerce.delx.ai/intents/in-range-api.json"
}

Portable and inspectable

Share the intent, not a directory search.