Example inputPOST /api/v1/x402/starts-with
{
"text": "https://api.delx.ai/x",
"prefix": "https://"
}Portable intent card · data-quality
Starts With API for agents
Check whether text starts with a prefix. Call when you gate URL/scheme or header prefix checks before egress. Returns boolean result and prefix 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/starts-with -m POST -H 'x-delx-source: intent-card-starts-with-api' --max-amount 0.001 -b '{"text":"https://api.delx.ai/x","prefix":"https://"}'Agent discoverydelx/intent-card/v1
{
"intent": "Starts With for an agent workflow",
"tool_name": "util_starts_with",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/starts-with-api.json"
}Portable and inspectable