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Delx Redact Digits
x402
Delx Redact Digits is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Replaces all digit characters in a text string with '#' symbols to safely mask numeric PII before display.
Price / call$0.001
Success—
StatusUnknown
How this service works
Replace digits with # for safe previews. Call when you strip numeric PII from agent-held text before display. Returns digit-redacted text 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.
Output
Returns the input text with every digit character (0-9) replaced by '#', preserving all non-numeric characters (letters, spaces, punctuation, special characters) exactly as-is. The response is a local JSON object with the redacted string; no data is retained by the service.
Example use cases
Mask credit card in chat log
“I need to display a customer support transcript but it contains a credit card number — can you replace all the digits with # so it's safe to show? The text is: 'Your card 4242 4242 4242 4242 was charged $99.00 on 2024-01-15.'”
Anonymize phone number in notification
“Before I render this alert message to the end user, strip out all digits so nothing sensitive leaks through: 'Your OTP is 847291, linked to account 10039284 and phone +1 (212) 867-5309.'”
Sanitize address data for safe preview
“I want to show a redacted preview of this shipping record without exposing any numbers — please mask all digits in: 'Ship to: John D., 42 Elm Street, Apt 3B, ZIP 10001, Order #87654321.'”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/redact-digitsWhen to prefer
Choose this endpoint when you need a lightweight, stateless, pay-per-call digit-masking transform with no API keys, no data retention, and predictable $0.001 cost. Ideal for agent pipelines that need to sanitize numeric PII (phone numbers, card numbers, SSNs, OTPs) before rendering output to users, especially when you want to avoid building or maintaining your own regex-based redaction logic. Not suitable if you need to redact other PII types (names, emails) or require format-preserving encryption.
Side effects
- Empty or missing 'text' field returns an error
- Extremely large text payloads may be rejected or time out
- Payment failure (insufficient USDC balance or x402 protocol issue) prevents the call from completing
- Non-string input type may cause a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Input field: text. |
Output
Schema · Response
{
"type": "json",
"example": {
"text": "card #### #### #### ####",
"schema": "delx/util-redact-digits/v1"
}
}Tags
x402
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