Stablecoin Issuer & Reserve Verifier

x402

Stablecoin Issuer & Reserve Verifier is a paid API for AI agents from x402.freeq.one, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-11).

Verifies a stablecoin's issuer identity, GENIUS Act qualification status, and latest reserve attestation by resolving from chain+address, known symbol, or transaction hash

Price / call$0.005

Seller volume →—

Success—

StatusUnknown

How this service works

Stablecoin Issuer / GENIUS / Reserve Verifier: Verify a stablecoin: issuer identity, GENIUS Act qualification status, and latest reserve attestation. Resolves the token from chain+address, a known symbol (USDC, USDT, PYUSD, USDS, FDUSD, USDe), or a tx hash. Free preview: preview=true validates the input and returns the issuer only — no payment required. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/verify_stablecoin.

Output

A JSON object containing the resolved stablecoin's issuer identity, GENIUS Act qualification status, and latest reserve attestation data. In preview mode (free), only input validation and issuer identity are returned without on-chain calls or attestation payload.

Example use cases

Compliance check before DeFi deposit

“Before I deposit into this protocol, can you verify the stablecoin at address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — I need the issuer identity, whether it qualifies under the GENIUS Act, and the latest reserve attestation?”

Quick issuer identity preview

“Can you do a free preview check on USDT to just validate the input and tell me who the issuer is — I don't need the full reserve attestation right now, just the issuer identity?”

Trace stablecoin from transaction hash

“I have this transaction hash from a transfer I received — can you resolve which stablecoin was sent and verify the issuer identity and GENIUS Act status for it?”

Technical details

Endpoint

POSThttps://x402.freeq.one/tools/verify_stablecoin?utm_source=zero.xyz

When to prefer

Use this endpoint when you need to programmatically verify a stablecoin's regulatory compliance (GENIUS Act), confirm issuer identity, or retrieve the latest reserve attestation — especially useful for DeFi risk checks, compliance workflows, or due diligence before transacting with a stablecoin. Prefer this over generic blockchain explorers when GENIUS Act qualification status and reserve attestation are specifically needed.

Side effects

Unknown or unresolvable token address returns an error
Unsupported chain identifier causes lookup failure
Invalid transaction hash or tx with no ERC-20 Transfer log fails to resolve token
Unrecognized symbol not in the known list returns an error
Payment failure (x402) blocks full attestation call
Reserve attestation data temporarily unavailable from issuer

Input

Schema · Request body

Field	Type	Description
chain	string	Chain for address lookup: base (default), ethereum, arbitrum, optimism, polygon
symbol	string	Known symbol: USDC, USDT, PYUSD, USDS, FDUSD, USDe (alternative to address)
address	string	Token contract address (0x + 40 hex). e.g. 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC on Base)
preview	boolean	true = free registry-only check: input validation + issuer identity, no on-chain calls, no attestation payload. No payment required.
tx_hash	string	Transaction hash — resolves the token contract from the tx's ERC-20 Transfer log

Output

Schema · Response

{
  "type": "json",
  "example": {
    "result": {}
  }
}

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