Example inputPOST /api/v1/x402/list-len-safe
{
"items": [
1,
2,
3
]
}Portable intent card · data-quality
List Len Safe API for agents
Safe length of a list/JSON array. Call when you measure agent arrays before batching. Returns length integer 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.
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/list-len-safe -m POST -H 'x-delx-source: intent-card-list-len-safe-api' --max-amount 0.001 -b '{"items":[1,2,3]}'Agent discoverydelx/intent-card/v1
{
"intent": "List Len Safe for an agent workflow",
"tool_name": "util_list_len_safe",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/list-len-safe-api.json"
}Portable and inspectable