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Quick ZK Auth — Semaphore Wallet Ownership & USDC Balance Proof
x402
Quick ZK Auth — Semaphore Wallet Ownership & USDC Balance Proof is a paid API for AI agents from zk.quickai.build, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Generates a zero-knowledge proof of Base wallet ownership and USDC balance attestation at a snapshot block using Semaphore, with ERC-8004 and x402 payment binding.
Price / call$0.05
Success—
StatusUnknown
How this service works
Quick ZK Auth v1.0.1 — Semaphore ZK wallet ownership on Base plus USDC balance attestation at snapshot block (not ZK-hidden balance in v1). ERC-8004 bundles with x402 payment binding.
Output
A zero-knowledge proof bundle (ERC-8004 compatible) attesting Semaphore-based wallet ownership on Base and a USDC balance attestation at the current snapshot block, confirming whether the wallet meets the specified minimum balance threshold. Includes x402 payment binding metadata.
Example use cases
Example prompt
“Prove that wallet 0xAbCd1234567890AbCd1234567890AbCd12345678 owns its Base account and holds at least 500 USDC — use the standard tier proof.”
Technical details
Endpoint
POSThttps://zk.quickai.build/proveWhen to prefer
Choose this endpoint when you need to cryptographically prove Base wallet ownership and USDC balance qualification using zero-knowledge proofs (Semaphore), especially when building gated access flows, DeFi qualification gates, or identity attestations that require ERC-8004 bundle compatibility and x402 payment binding without revealing sensitive wallet details beyond the balance threshold.
Side effects
- Wallet address does not meet minimum USDC balance — proof generation fails with balance attestation failure
- Invalid Ethereum address format — returns 400 bad request
- Snapshot block unavailable or RPC timeout — returns 503 or timeout error
- Payment not received or x402 binding failure — returns 402 Payment Required
- Unknown proof tier value — returns 400 validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tier | string | Proof tier (basic or standard qualification) |
| wallet | string | Base wallet to prove ownership and USDC balance for |
| min_balance_usdc | integer | Minimum USDC balance threshold on Base |
Tags
x402
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