InputPOST /api/v1/x402/mask-string
{
"text": "hello agent world"
}Web and API intelligence · utility
Mask Sensitive Strings
Mask sensitive middle characters. Use before logging secrets, account numbers, or tokens that must stay partially hidden. Returns a masked string suitable for audit trails—never stores the original beyond the request. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.
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/mask-string -m POST -H 'x-delx-source: product-page' --max-amount 0.001 -b '{"text":"hello agent world"}'Delivered resultapplication/json
{
"schema": "delx/mask-string/v1",
"text": "he*************ld",
"source_len": 17
}Machine-readable evidence