---
title: "Get latest accepted code"
description: "Retrieves the code of a deployed GenLayer intelligent contract at a specific block height and transaction status."
source: https://docs.genlayer.com/api-references/genlayer-node/gen/gen_getContractCode
last_updated: 2026-02-12
---

### gen_getContractCode

Retrieves the code of a deployed GenLayer intelligent contract at a specific block height and transaction status.

**Method:** `gen_getContractCode`

**Parameters:**

- `request` (object, required): The contract code request parameters
  - `address` (string, required): The contract address to query
  - `blockNumber` (string, optional): The block number to query at (hex-encoded). If not provided, uses latest block
  - `status` (string, optional): The transaction status filter (`"finalized"` or `"accepted"`). If not provided, uses accepted state

**Returns:** Base64-encoded contract code

**Example Request - Latest Accepted State:**

```json
{
  "jsonrpc": "2.0",
  "method": "gen_getContractCode",
  "params": [
    {
      "address": "0x73ca5a2b51edf506ceaf110a41780ec51294d89f"
    }
  ],
  "id": 1
}
```

**Example Request - Specific Block and Status:**

```json
{
  "jsonrpc": "2.0",
  "method": "gen_getContractCode",
  "params": [
    {
      "address": "0x73ca5a2b51edf506ceaf110a41780ec51294d89f",
      "blockNumber": "0x151ec5",
      "status": "finalized"
    }
  ],
  "id": 1
}
```

**Example Response:**

```json
{
  "jsonrpc": "2.0",
  "result": "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",
  "id": 1
}
```

**Notes:**

- The `blockNumber` parameter should be hex-encoded with a `0x` prefix
- Valid `status` values are `"accepted"` (default) and `"finalized"`
- The returned code is base64-encoded
- If the contract doesn't exist at the specified block/status, an error will be returned
- If the address does not have code (not a contract), an error will be returned

**cURL Example:**

```bash
# Get latest accepted code
curl -X POST http://localhost:9151 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "gen_getContractCode",
    "params": [{
      "address": "0x73ca5a2b51edf506ceaf110a41780ec51294d89f"
    }],
    "id": 1
  }'

# Get code at specific block with finalized status
curl -X POST http://localhost:9151 \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "gen_getContractCode",
    "params": [{
      "address": "0x73ca5a2b51edf506ceaf110a41780ec51294d89f",
      "blockNumber": "0x151ec5",
      "status": "finalized"
    }],
    "id": 1
  }'
```