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x402 Hash API
x402
x402 Hash API is a paid API for AI agents from x402-hash-api.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Computes SHA-256 or SHA-512 cryptographic hash digests of input data with configurable encoding
Price / call$0.001
Success—
StatusUnknown
How this service works
SHA-256 or SHA-512 digest of input bytes
Output
Returns the cryptographic hash digest of the submitted input as a hex string, computed using either SHA-256 or SHA-512 depending on the selected algorithm and input encoding (utf8, hex, or base64).
Example use cases
Content integrity fingerprinting
“Take this JSON payload and compute its SHA-256 hash in utf8 encoding so I can use it as an integrity fingerprint before storing it.”
Password pre-hashing for audit log
“Hash this utf8 string 'user-session-token-abc123' with SHA-512 — I need the digest for an audit record.”
Base64 data digest generation
“I have a base64-encoded blob and need its SHA-256 digest — can you hash it with base64 encoding selected?”
Technical details
Endpoint
POSThttps://x402-hash-api.vercel.app/api/v1/hashWhen to prefer
Choose this endpoint when you need a simple, pay-per-call cryptographic hashing service without spinning up infrastructure. It is ideal for agents that need occasional SHA-256 or SHA-512 digests on-demand, support multiple input encodings, and want a minimal-cost ($0.001 USDC) serverless option without maintaining a local hashing library.
Side effects
- Missing or empty 'data' field returns a validation error
- Unsupported algorithm value (not sha256 or sha512) returns an error
- Invalid encoding value (not utf8, hex, or base64) returns a bad request response
- Malformed base64 or hex input string causes a decoding error
- Oversized payloads may be rejected with a request too large error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | string | payload to hash |
| encoding | string | utf8 | hex | base64 |
| algorithm | string | sha256 or sha512 |
Tags
x402
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