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Tollkit Extract – Chain Check
x402
Tollkit Extract – Chain Check is a paid API for AI agents from extract.tollkit.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-11).
Checks the blockchain chain status for a given ERC-20 or SPL token contract, paid per-call in USDC via x402 with no account or API key required.
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 chain data for the given token contract address on the specified blockchain (Base, Ethereum, or Solana), confirming chain-level status and availability of the token.
Example use cases
Verify token deployment on Base
“Is the token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 deployed on Base? Can you check its chain status for me?”
Solana SPL mint chain check
“Check the on-chain status of this Solana SPL mint: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v — is it live on Solana?”
Token contract chain validation
“I want to confirm this Ethereum token contract is real before I interact with it — can you do a chain check on 0xdAC17F958D2ee523a2206206994597C13D831ec7 on Ethereum?”
Technical details
Endpoint
POSThttps://extract.tollkit.dev/chain/check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-account, pay-per-call check on whether a specific ERC-20 or SPL token contract exists and is accessible on a given chain (Base, Ethereum, or Solana). Ideal for agents that need one-off on-chain verification without committing to a subscription or API key, paying fractions of a cent per query via x402 in USDC.
Side effects
- Invalid contract address format returns a validation error
- Token not found on specified chain returns empty or error response
- Unsupported chain value triggers enum validation failure
- Payment not received or insufficient USDC causes x402 payment rejection
- Network timeout or RPC node unavailability causes lookup failure
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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