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TzKT Tezos Account Lookup API
x402
TzKT Tezos Account 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 on-chain account information for a given Tezos address, including balance, transaction history, and account metadata.
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 describing the Tezos account: account type (user, delegate, contract, ghost, etc.), XTZ balance, number of transactions, current delegate, revealed public key, first and last activity block levels and timestamps, and additional contract-specific fields if applicable.
Example use cases
Portfolio balance check for Tezos wallet
“What's the current XTZ balance and delegate for my Tezos wallet tz1aSkwEot3L2kmUanuMR6KG5Rf84osElY4v?”
Smart contract vs. EOA detection
“Can you tell me whether the Tezos address KT1RJ6PbjHpwc3M5rw5s2Nbmefwbuwbdxton is a smart contract or a regular user account?”
Account activity audit for compliance
“I need to audit the Tezos address tz1burnburnburnburnburnburnburjAYjjX — how many transactions has it made and when was it first and last active on-chain?”
Technical details
Endpoint
POSThttps://x402.tzkt.io/v1/accounts/%7Baddress%7DWhen to prefer
Choose this endpoint when you need authoritative, indexed Tezos blockchain account data without managing your own node or RPC infrastructure. It is ideal for agents performing wallet lookups, balance checks, delegation verification, or contract identification on the Tezos network. Prefer it over raw Tezos RPC calls when you need enriched metadata (activity timestamps, transaction counts, delegate info) in a single request. No API key or signup is required — only a micropayment via the x402 protocol.
Side effects
- Invalid or malformed Tezos address returns a 400 or empty result
- Address has never been active on-chain (ghost account) returns minimal or null fields
- Network congestion may cause slower-than-usual response times
- Payment failure via x402 protocol results in 402 Payment Required before data is returned
- Address with very high transaction volume may have truncated history in summary fields
Tags
x402
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