# TzKT Delegations Operations API

> TzKT Delegations Operations 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 delegation operations from the blockchain, filterable by sender, delegate, block level, and timestamp.

## Facts

- Endpoint: GET https://x402.tzkt.io/v1/operations/delegations
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tzkt-delegations-operations-api-b138f759
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w-5NT003X1vfuY3uiJGcz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tzkt-delegations-operations-api-b138f759
```

Example prompt: Show me the last 20 delegation operations on Tezos where the sender is tz1VSUr8wwNhLAzempoch5d6hLRiTh8Cjcjb, sorted by most recent first.

## When to prefer this

Choose this endpoint when you need to query historical or recent Tezos delegation operations with flexible filtering by account address, baker, block level, or timestamp. It is ideal for auditing delegation histories, tracking baker inflows, or monitoring staking behavior on Tezos without requiring API key signup. Prefer alternatives if you need Ethereum or other chain delegation data.

## Known failure modes

- Invalid sender or delegate address format returns empty array or 400 error
- Requesting beyond available pagination depth may return empty array
- Unsupported sort field values may return 400 bad request
- Network or indexer downtime returns 5xx error
- Payment failure via x402 protocol blocks the request before reaching the indexer

## 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 array of delegation operation objects, each containing fields such as operation hash, block level, timestamp, sender address, new delegate address, previous delegate address, and operation status. The array is paginated and ordered according to the specified sort and offset parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "sort": {
   "type": "string",
   "description": "Sorting field and direction"
  },
  "level": {
   "type": "string",
   "description": "Filter by block level"
  },
  "limit": {
   "type": "integer",
   "description": "Max items to return"
  },
  "offset": {
   "type": "integer",
   "description": "Pagination offset"
  },
  "sender": {
   "type": "string",
   "description": "Filter by sender address"
  },
  "delegate": {
   "type": "string",
   "description": "Filter by new delegate address"
  },
  "timestamp": {
   "type": "string",
   "description": "Filter by timestamp"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "array",
 "items": {
  "type": "object"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tzkt-delegations-operations-api-b138f759/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.tzkt.io](https://www.zero.xyz/host/x402.tzkt.io/llms.txt)