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Tollkit Chain Token Attestation Check
x402
Tollkit Chain Token Attestation Check is a paid API for AI agents from attest.tollkit.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).
Checks/attests a token contract address on a specified blockchain (Base, Ethereum, or Solana) and returns on-chain verification data, paid per-call via x402 in USDC.
Price / call$0.004
Success—
StatusUnknown
How this service works
Pay-per-call product page extraction. No account, no API key: pay in-band with x402 in USDC on Base or Solana.
Output
Returns an attestation or verification result for the given token contract address on the specified chain — including whether the token is recognized, any on-chain metadata, and verification signals. Paid per-call at $0.004 USDC via x402 with no account or API key required.
Example use cases
DeFi token legitimacy check
“I found a token at address 0x1234abcd... on Base — can you run an attestation check on it and tell me if it looks legit before I interact with it?”
Solana SPL mint verification
“Can you check the attestation status of this Solana mint address EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v for me?”
Ethereum contract due diligence
“Before I add this token to our treasury list, can you verify the ERC-20 contract 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum and return the attestation result?”
Technical details
Endpoint
POSThttps://attest.tollkit.dev/chain/check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a frictionless, pay-per-call on-chain token attestation with no account setup — ideal for agents that encounter unknown token addresses and need instant verification on Base, Ethereum, or Solana without managing API subscriptions. Prefer this over traditional token-info APIs when you want x402 micropayment billing and multi-chain coverage in a single call.
Side effects
- Invalid token address format (must match ERC-20 0x hex or SPL base58 pattern) — returns validation error
- Unsupported chain value — only 'base', 'ethereum', or 'solana' accepted
- Payment failure via x402 (insufficient USDC balance or unsupported payment chain) — returns 402 Payment Required
- Token contract not found on specified chain — returns empty or not-found attestation
- Network or RPC timeout when querying chain data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Which chain to read: "base" (default), "ethereum" or "solana". |
| token | string | ERC-20 contract or SPL mint. |
Tags
x402
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