> ## Documentation Index
> Fetch the complete documentation index at: https://chainstack-docs-polygon-erigon-trace-deprecation.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# approvedBuilders | Hyperliquid info

> The info endpoint with type: "approvedBuilders" lists the builder addresses a user has approved to attach builder fees to their orders.

<Info>
  This method is available on Chainstack. Not all Hyperliquid methods are available on Chainstack, as the open-source node implementation does not support them yet — see [Hyperliquid methods](/docs/hyperliquid-methods) for the full availability breakdown.
</Info>

The `info` endpoint with `type: "approvedBuilders"` returns the list of builder addresses a user has approved. When a user approves a builder, that builder can attach a builder fee to the user's orders. Use this method to check which builders a given address has authorized.

## Parameters

### Request body

* `type` (string, required) — The request type. Must be `"approvedBuilders"`.
* `user` (string, required) — Address in 42-character hexadecimal format; e.g. 0x0000000000000000000000000000000000000000.

## Response

Returns an array of builder addresses that the user has approved. The array is empty if the user has not approved any builders.

## Example request

<CodeGroup>
  ```shell Shell theme={null}
  curl -X POST \
    -H "Content-Type: application/json" \
    -d '{"type": "approvedBuilders", "user": "0x1442ad477ded1b0028b57621aa7b6f7eadb8f568"}' \
    https://hyperliquid-mainnet.core.chainstack.com/4f8d8f4040bdacd1577bff8058438274/info
  ```

  ```python Python (hyperliquid-python-sdk) theme={null}
  from hyperliquid.info import Info

  # skip_ws=True avoids opening a WebSocket connection for this REST call
  info = Info("YOUR_CHAINSTACK_ENDPOINT", skip_ws=True)

  # The SDK has no dedicated approvedBuilders helper, so post the request directly.
  approved_builders = info.post("/info", {
      "type": "approvedBuilders",
      "user": "0x1442ad477ded1b0028b57621aa7b6f7eadb8f568",
  })
  print(approved_builders)
  ```

  ```typescript TypeScript (@nktkas/hyperliquid) theme={null}
  import { HttpTransport, InfoClient } from "@nktkas/hyperliquid";

  // apiUrl points the transport at a custom server (your Chainstack endpoint)
  const transport = new HttpTransport({ apiUrl: "YOUR_CHAINSTACK_ENDPOINT" });
  const info = new InfoClient({ transport });

  const approvedBuilders = await info.approvedBuilders({
    user: "0x1442ad477ded1b0028b57621aa7b6f7eadb8f568",
  });
  console.log(approvedBuilders);
  ```
</CodeGroup>

<Note>
  **Use your own endpoint in your code.** The code examples use a placeholder Chainstack endpoint (YOUR\_CHAINSTACK\_ENDPOINT) — replace it with your own Hyperliquid node endpoint from the [Chainstack console](https://console.chainstack.com/). The curl above uses a shared public endpoint for quick checks only; do not use it in production.
</Note>

## Example response

```json theme={null}
["0x1cc34f6af34653c515b47a83e1de70ba9b0cda1f"]
```

## Use cases

The `info` endpoint with `type: "approvedBuilders"` is useful for:

* Checking which builders a user has authorized before submitting orders with builder fees
* Building wallet and frontend integrations that surface a user's approved builders
* Auditing builder-fee relationships for an address


## OpenAPI

````yaml openapi/hyperliquid_node_api/hypercore_info/info_approved_builders.json post /4f8d8f4040bdacd1577bff8058438274/info
openapi: 3.0.0
info:
  title: Hyperliquid Node API
  version: 1.0.0
  description: This is an API for interacting with Chainstack Hyperliquid node.
servers:
  - url: https://hyperliquid-mainnet.core.chainstack.com
security: []
paths:
  /4f8d8f4040bdacd1577bff8058438274/info:
    post:
      tags:
        - hyperliquid operations
      summary: info (approvedBuilders)
      operationId: infoApprovedBuilders
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                type:
                  type: string
                  description: Request type
                  default: approvedBuilders
                  enum:
                    - approvedBuilders
                user:
                  type: string
                  description: User address in 42-character hexadecimal format.
                  default: '0x1442ad477ded1b0028b57621aa7b6f7eadb8f568'
              required:
                - type
                - user
      responses:
        '200':
          description: Array of approved builder addresses
          content:
            application/json:
              schema:
                type: array
                description: Array of builder addresses the user has approved.
                items:
                  type: string

````