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TzKT Bigmaps API
x402
TzKT Bigmaps API is a paid API for AI agents from x402.tzkt.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Retrieves a paginated list of Tezos smart contract bigmaps, filterable by contract address, storage path, and active status
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 an array of bigmap objects, each describing a Tezos smart contract bigmap including its ID, contract address, storage path, active/inactive status, and associated metadata such as key and value types.
Example use cases
Audit DeFi protocol storage
“List all active bigmaps for the Tezos contract KT1TxqZ8QtKvLu3V3JH7Gg9t8SqKJ7ybDMqS so I can audit which storage structures it currently uses.”
Explore NFT contract bigmaps
“Pull the first 100 bigmaps from Tezos contract KT1RJ6PbjHpwc3M5bw5AVoXHjsWjSWRFGFXK filtered to the ledger storage path so I can see the token ownership map.”
Monitor inactive storage structures
“Fetch all inactive bigmaps for Tezos contract KT1PWx52omelet7ep9NcJ3i3RFkjCBmxdFn8 so I can see which storage structures were deprecated by past upgrades.”
Technical details
Endpoint
GEThttps://x402.tzkt.io/v1/bigmapsWhen to prefer
Use this endpoint when you need to enumerate or filter bigmaps across Tezos smart contracts without requiring an API key or signup. Prefer it over direct Tezos node RPC calls when you want indexed, fast, human-readable bigmap metadata with rich filtering by contract, path, and status. If you need individual bigmap key lookups or bigmap values rather than a list of bigmaps, a different TzKT endpoint may be more appropriate.
Side effects
- Invalid contract address format returns empty array or 400 error
- Limit value outside 1–10000 range may return a validation error
- Unknown or misspelled storage path returns empty results
- Offset beyond total record count returns empty array
- Payment failure (x402 protocol) blocks the request before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| path | string | Filter by storage path |
| sort | string | Sorting field and direction |
| limit | integer | Max items to return (1-10000) |
| active | boolean | Filter by active status |
| offset | integer | Pagination offset |
| contract | string | Filter by contract address |
Output
Schema · Response
{
"type": "array",
"items": {
"type": "object"
}
}Tags
x402
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