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Lucid Oracle ZK Proof Generation Service
x402
Lucid Oracle ZK Proof Generation Service is a paid API for AI agents from lucid-oracle-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Generates a zero-knowledge proof (zk-SNARK in Groth16 format) for a specified circuit and input set
Price / call$0.05
Success—
StatusUnknown
How this service works
Generate zero-knowledge proof
Output
Returns a zk-SNARK proof object in Groth16 format, an array of public signals from the circuit, a success boolean, and metadata including the tier, circuit name, a unique proofId, and the execution time in milliseconds.
Example use cases
Prove age without revealing birthdate
“I need to prove I'm over 18 to access this service without revealing my actual birthdate — generate a zero-knowledge proof using the age verification circuit with my private birthdate as the secret input.”
Privacy-preserving on-chain credential
“Create a Groth16 zero-knowledge proof for my membership credential circuit so I can submit it on-chain to prove I'm a verified member without exposing any of my private identity details.”
Authenticate secret without disclosure
“Generate a zk-SNARK proof at the standard tier using the hash preimage circuit — I want to prove to a verifier that I know the secret passphrase 'alpha-phoenix-7734' without ever revealing the passphrase itself.”
Technical details
Endpoint
POSThttps://lucid-oracle-production.up.railway.app/api/generate-proofWhen to prefer
Use this endpoint when you need to generate a fresh zk-SNARK proof (Groth16) for a given circuit and private inputs, especially when you need the public signals and a verifiable proof object. Prefer this over the sibling verification endpoint when you are the prover, not the verifier.
Side effects
- Invalid or unsupported circuit name returns an error
- Missing required fields (tier, inputs, circuit) results in a 400 bad request
- Circuit inputs that don't match the expected schema for the given circuit cause proof generation failure
- Payment insufficient for the selected tier returns a 402 payment required
- Server-side proof generation timeout for complex circuits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tierrequired | string | Pricing tier (basic: $0.02, standard: $0.05, premium: $0.10) |
| inputsrequired | object | Circuit-specific inputs (e.g., {preimage: 'secret'}) |
| circuitrequired | string | Circuit type to use for proof generation |
Output
Schema · Response
{
"proof": {
"type": "object",
"description": "zk-SNARK proof in Groth16 format"
},
"success": {
"type": "boolean"
},
"metadata": {
"type": "object",
"properties": {
"tier": {
"type": "string"
},
"circuit": {
"type": "string"
},
"proofId": {
"type": "string"
},
"executionTime": {
"type": "number"
}
}
},
"publicSignals": {
"type": "array",
"description": "Public outputs from circuit"
}
}Tags
x402
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