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OmniAPI Hash Verify
x402
OmniAPI Hash Verify is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.03155/call, status unknown (last checked 2026-09-14).
Verifies the integrity or authenticity of a hash value against provided input data
Price / call$0.03155
Success—
StatusUnknown
How this service works
444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.
Output
Returns a verification result indicating whether the provided hash matches the input data, including a boolean validity flag and potentially metadata about the hash type or mismatch details.
Example use cases
File integrity check before processing
“I downloaded a file and the vendor says its SHA256 hash should be 'a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3' — can you verify that the string 'Hello World!' actually produces that hash?”
API response tampering detection
“I received a payload with the value 'user:admin,role:superuser' and a claimed MD5 hash of '5a105e8b9d40e1329780d62ea2265d8a' — verify whether the hash actually matches that data so I know it hasn't been tampered with.”
Blockchain transaction hash validation
“Someone sent me transaction data '0xdeadbeef' and claims it hashes to '4a44dc15364204a80fe80e9039455cc1d843e9cf6beb5a6a9b23c8d1bb36e0f'. Can you confirm if that hash is correct?”
Technical details
Endpoint
POSThttps://omni-api-cyan.vercel.app/api/tools/hash/verifyWhen to prefer
Use this endpoint when you need a quick, pay-per-call hash verification without setting up local cryptographic infrastructure, especially in agent workflows that already use the x402 payment protocol and need to validate data integrity on-the-fly across diverse hash formats.
Side effects
- Invalid or malformed hash string returns error or false match
- Missing required 'query' field returns 400-level error
- Unsupported hash algorithm may return unrecognized format error
- Payment failure via x402 blocks the request entirely
- Ambiguous input encoding (UTF-8 vs ASCII) may cause false negatives
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | Input data for the endpoint |
| queryrequired | string | Search query or input text |
| params | object | Additional parameters |
Output
Schema · Response
{
"type": "object",
"description": "API response data"
}Tags
x402
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