InputPOST /api/v1/x402/starts-with
{
"text": "https://api.delx.ai/x",
"prefix": "https://"
}Agent data quality · data-quality
Delx Starts With
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.
One-command purchase
Run it from an agent.
No account or API key. AgentCash reads the 402 challenge, pays no more than the declared cap, retries the request and returns the result.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/starts-with -m POST -H 'x-delx-source: product-page' --max-amount 0.001 -b '{"text":"https://api.delx.ai/x","prefix":"https://"}'Delivered resultapplication/json
{
"schema": "delx/util-starts-with/v1",
"result": true,
"prefix": "https://"
}Machine-readable evidence