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Tollkit Chain Token Check
x402
Tollkit Chain Token Check is a paid API for AI agents from web.tollkit.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-10).
Looks up on-chain token information for a given ERC-20 contract or SPL mint address on Base, Ethereum, or Solana.
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 on-chain token information for the specified contract or mint address, including validation of the token's existence and metadata available from the chosen chain (Base, Ethereum, or Solana). Paid via x402 micro-payment of $0.004 USDC per call with no account required.
Example use cases
Verify a suspicious DeFi token
“Can you check whether the token at 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 on Ethereum is a real ERC-20 contract before I interact with it?”
Look up a Base token contract
“Look up the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base and tell me what on-chain info comes back.”
Validate a Solana SPL mint address
“Check the Solana SPL mint EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v and see what the chain reports about it.”
Technical details
Endpoint
POSThttps://web.tollkit.dev/chain/check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, account-free, pay-per-call lookup of an on-chain token's existence and metadata on Base, Ethereum, or Solana. Ideal for agents that need to validate token contracts on-the-fly without provisioning API keys or subscriptions — especially useful in DeFi workflows, wallet tooling, or fraud-screening pipelines where ephemeral, per-query billing via x402 USDC micro-payments is preferred over monthly plans.
Side effects
- Invalid contract address format returns a validation error (address must match 0x hex or base58 pattern)
- Unknown or undeployed contract address may return empty or null token data
- Unsupported chain value outside of 'base', 'ethereum', 'solana' returns an enum validation error
- Payment failure via x402 (insufficient USDC balance) results in 402 Payment Required response
- Network timeout or RPC node unavailability for the requested chain
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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