---
title: "Get transactions auxiliary info"
method: GET
path: "/transactions/auxiliary_info"
tags: ["Transactions"]
---

# Get transactions auxiliary info

`GET /transactions/auxiliary_info`

Retrieves persisted auxiliary information (such as transaction indices within blocks) for
transactions in a given version range.

If the version range has been pruned, a 410 will be returned.

## Query parameters

- `start_version` string, uint64, required — A string containing a 64-bit unsigned integer. We represent u64 values as a string to ensure compatibility with languages such as JavaScript that do not parse u64s in JSON natively.
- `limit` integer

## Response `200`

- PersistedAuxiliaryInfo[]
  - `transaction_index` integer — Optional transaction index in the block (None indicates no auxiliary info available)

## Other responses

- `400`
- `403`
- `404`
- `410`
- `500`
- `503`

---

[API](https://skmtc.dev/aptos/apis/aptos-node-api.md) · [All operations](https://skmtc.dev/aptos/apis/aptos-node-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/aptos/aptos-node-api/revisions/811ada792a7a/schema)