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x402 Hash Tools API
x402
x402 Hash Tools API is a paid API for AI agents from call402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-28).
Computes SHA-256/SHA-512 hashes, Base64 encodes/decodes text, or generates UUIDs via a pay-per-call USDC micropayment endpoint
Price / call$0.005
Success—
StatusUnknown
How this service works
USDC pay-per-call APIs for AI agents via the x402 protocol (v2, exact, Base mainnet). Send a request, receive HTTP 402 with payment requirements, pay with @x402/fetch or any x402 client, retry with the PAYMENT-SIGNATURE header.
Output
A JSON object containing the computed result: for 'hash' operations, both sha256 and sha512 hex digest strings; for 'base64-encode' or 'base64-decode', the transformed string; for 'uuid', a newly generated UUID string.
Example use cases
Checksum verification for data integrity
“Hash the string 'mySecretPassword123' with SHA-256 so I can compare it against a stored digest.”
Base64 encoding for API payloads
“Base64 encode this text for me: 'username:password' — I need to send it as an Authorization header value.”
UUID generation for new database records
“Generate a fresh UUID I can use as a unique ID for a new database record I'm creating.”
Technical details
Endpoint
POSThttps://call402.com/api/hash-tools?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs lightweight cryptographic utilities (SHA-256/SHA-512 hashing, Base64 encoding/decoding, or UUID generation) via a pay-per-call micropayment model without requiring API key management. Ideal for agentic workflows on Base mainnet using the x402 protocol where per-call USDC billing is preferred over subscription access.
Side effects
- Missing or invalid 'op' enum value returns a 400 error
- Missing 'text' field for operations that require it
- Payment not provided results in HTTP 402 with payment requirements; must retry with PAYMENT-SIGNATURE header
- Malformed Base64 input for decode operation may return an error
- Network or facilitator issues may cause payment verification failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| op | string | |
| text | string |
Output
Schema · Response
{
"type": "json",
"example": {
"sha256": "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
"sha512": "9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca7"
}
}Tags
x402
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