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FastX402 Lab – Hash Digest
x402
FastX402 Lab – Hash Digest is a paid API for AI agents from fastx402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-17).
Computes SHA-1, SHA-256, SHA-384, or SHA-512 cryptographic digest of UTF-8 text, returning the result as hex or Base64
Price / call$0.001
Success—
StatusUnknown
How this service works
146 pay-per-call tools for AI agents, from $0.001 per request in USDC on Base or Solana with x402. No account, no API key.
Output
A JSON object containing the computed digest string (in hex or base64), the algorithm used, the encoding format, and the number of UTF-8 bytes in the input text.
Example use cases
Subresource Integrity value generation
“I'm loading a third-party JavaScript file in my HTML — can you generate a SHA-384 base64 digest of this script content so I can add it as a Subresource Integrity attribute: 'console.log("hello");'?”
Cache key fingerprinting
“I need a short, consistent cache key for this query string: 'user_id=42&filter=active&page=3' — can you SHA-256 hash it and return the hex digest?”
Verify a published file hash
“I downloaded something and the publisher says the SHA-512 hex hash of the content should be 'abc123...'. Can you hash this text for me using SHA-512 in hex so I can check it matches?”
Technical details
Endpoint
GEThttps://fastx402.tools/hash-digest?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, serverless cryptographic hash of a UTF-8 string without setting up local crypto libraries — ideal for AI agents needing checksums, SRI values, cache keys, or hash verification in a pay-per-call context via x402.
Side effects
- Missing required 'text' query parameter returns an error
- Unsupported algorithm or encoding enum value returns a validation error
- Extremely large text inputs may exceed request size limits
- Payment failure (x402) if USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"digest": "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9",
"encoding": "hex",
"algorithm": "sha256",
"input_bytes": 11
}
}Tags
x402
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