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TzKT Tezos Contract Lookup API
x402
TzKT Tezos Contract Lookup API is a paid API for AI agents from x402.tzkt.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Retrieves detailed information about a specific Tezos smart contract by its on-chain address via the TzKT blockchain indexer.
Price / call$0.002
Success—
StatusUnknown
How this service works
TzKT is a comprehensive Tezos blockchain indexer API. Access blocks, operations, accounts, contracts, bigmaps, delegates, tokens and network stats through a fast REST API. No signup or API key required.
Output
Returns a JSON object containing the contract's on-chain details including its address, balance in mutez, manager/owner, origination operation hash, originated block level and timestamp, contract type, entrypoints, current storage value, code, and any associated metadata (TZIP-16 off-chain views, token metadata if applicable).
Example use cases
Audit a Tezos DeFi protocol contract
“Look up the Tezos contract KT1TxqZ8QtKvLu3V3JH7Gx58n7Co4MCM2vqi and show me its entrypoints, current storage, and balance so I can audit how the DeFi pool is structured.”
Verify NFT contract authenticity
“I want to verify that the Tezos NFT contract at KT1GBZmSxmnKJXGMdMLbugPfLgUx59sjB35S is legitimate — can you fetch its metadata, origination block, and manager address from TzKT?”
Monitor smart contract balance
“What is the current tez balance and storage state of the Tezos contract KT1QuofAguf39jF9DhgQUQNjzFbPHiRa6FRf? I need to check if it still has funds locked in it.”
Technical details
Endpoint
POSThttps://x402.tzkt.io/v1/contracts/%7Baddress%7DWhen to prefer
Use this endpoint when you need structured, indexed data about a specific Tezos smart contract without running your own Tezos node. It is superior to raw RPC calls because it provides enriched metadata, human-readable entrypoints, and historical context. Prefer it over generic blockchain explorers when you need programmatic access with no API key and per-call micropayment pricing via the x402 protocol.
Side effects
- Invalid or malformed Tezos address returns 400 Bad Request
- Address exists but is an implicit account (tz1/tz2/tz3), not a contract — returns 404 or empty
- Contract exists but has not been indexed yet — may return stale or incomplete data
- Network congestion or TzKT indexer lag may return outdated storage snapshot
- Payment of 0.002 USDC via x402 protocol fails — returns 402 Payment Required
Tags
x402
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