# starknet_traceBlockTransactions > For the complete documentation index, see [llms.txt](/docs/llms.txt). POST https://starknet-mainnet.g.alchemy.com/v2/{apiKey} Returns the trace of the transactions in the block. Reference: https://www.alchemy.com/docs/chains/starknet/starknet-api-endpoints/starknet-trace-block-transactions ## Parameters | Name | Type | Required | Description | |------|------|----------|-------------| | block_id | object or enum | Yes | The hash of the requested block, the block number (height) of the requested block, or a block tag (latest or pending) | ## Result **result** (object[]): The traces of the transactions in the block ## Code Examples ### cURL ```bash curl --request POST \ --url https://starknet-mainnet.g.alchemy.com/v2/docs-demo \ --header 'Content-Type: application/json' \ --data '{ "jsonrpc": "2.0", "id": 1, "method": "starknet_traceBlockTransactions", "params": [ { "block_hash": "string" } ] }' ``` ### JavaScript ```javascript const options = { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify({ jsonrpc: '2.0', id: 1, method: 'starknet_traceBlockTransactions', params: [{block_hash: 'string'}] }) }; fetch('https://starknet-mainnet.g.alchemy.com/v2/docs-demo', options) .then(res => res.json()) .then(res => console.log(res)) .catch(err => console.error(err)); ``` ### Python ```python import requests url = "https://starknet-mainnet.g.alchemy.com/v2/docs-demo" payload = { "jsonrpc": "2.0", "id": 1, "method": "starknet_traceBlockTransactions", "params": [{ "block_hash": "string" }] } headers = {"Content-Type": "application/json"} response = requests.post(url, json=payload, headers=headers) print(response.text) ``` ### Go ```go package main import ( "fmt" "strings" "net/http" "io" ) func main() { url := "https://starknet-mainnet.g.alchemy.com/v2/docs-demo" payload := strings.NewReader("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"starknet_traceBlockTransactions\",\n \"params\": [\n {\n \"block_hash\": \"string\"\n }\n ]\n}") req, _ := http.NewRequest("POST", url, payload) req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := io.ReadAll(res.Body) fmt.Println(string(body)) } ``` ### Java ```java HttpResponse response = Unirest.post("https://starknet-mainnet.g.alchemy.com/v2/docs-demo") .header("Content-Type", "application/json") .body("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"starknet_traceBlockTransactions\",\n \"params\": [\n {\n \"block_hash\": \"string\"\n }\n ]\n}") .asString(); ``` ### C# ```csharp using RestSharp; var options = new RestClientOptions("https://starknet-mainnet.g.alchemy.com/v2/docs-demo"); var client = new RestClient(options); var request = new RestRequest(""); request.AddJsonBody("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"starknet_traceBlockTransactions\",\n \"params\": [\n {\n \"block_hash\": \"string\"\n }\n ]\n}", false); var response = await client.PostAsync(request); Console.WriteLine("{0}", response.Content); ``` ## OpenRPC Method Specification ```yaml name: starknet_traceBlockTransactions description: Returns the trace of the transactions in the block. paramStructure: by-name params: - name: block_id description: The hash of the requested block, the block number (height) of the requested block, or a block tag (latest or pending) required: true schema: title: Block id description: Block hash, number or tag oneOf: - title: Block hash type: object required: - block_hash properties: block_hash: title: Block hash description: The hash identifying a block type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ - title: Block number type: object required: - block_number properties: block_number: title: Block number description: The block's number (its height) type: integer minimum: 0 - title: Block tag description: A tag specifying a dynamic reference to a block type: string enum: - latest - pending result: name: result description: The traces of the transactions in the block schema: title: Block Transaction Traces type: array items: title: Transaction Trace type: object required: - transaction_hash - trace_root properties: transaction_hash: title: Transaction hash description: The transaction hash, as assigned in StarkNet type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ trace_root: title: Trace root description: A transaction that has been broadcasted to the network oneOf: - title: Invoke transaction V3 description: Initiates a transaction from a given account type: object required: - type - sender_address - calldata - version - signature - nonce - resource_bounds - tip - paymaster_data - account_deployment_data - nonce_data_availability_mode - fee_data_availability_mode properties: type: title: Type type: string enum: - INVOKE sender_address: title: Sender address description: A contract address type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ calldata: title: Calldata type: array description: | The data expected by the account's `execute` function (in most use cases, this includes the called contract address and a function selector) items: title: Field element description: A field element. Represented by at most 63 hex digits type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ version: title: Version description: Version of the transaction scheme type: string enum: - '0x3' - '0x100000000000000000000000000000003' signature: title: Signature description: A transaction signature type: array items: title: Field element description: A field element. Represented by at most 63 hex digits type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ nonce: title: Nonce description: A field element. Represented by at most 63 hex digits type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ resource_bounds: title: Resource bounds description: Resource bounds for the transaction execution type: object required: - l1_gas - l2_gas properties: l1_gas: title: L1 Gas description: The max amount and max price per unit of L1 gas used in this transaction type: object required: - max_amount - max_price_per_unit properties: max_amount: title: Max amount description: The max amount of the resource that can be used in the transaction type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,15})$ max_price_per_unit: title: Max price per unit description: The max price per unit of this resource for this transaction type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,31})$ l2_gas: title: L2 Gas description: The max amount and max price per unit of L2 gas used in this transaction type: object required: - max_amount - max_price_per_unit properties: max_amount: title: Max amount description: The max amount of the resource that can be used in the transaction type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,15})$ max_price_per_unit: title: Max price per unit description: The max price per unit of this resource for this transaction type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,31})$ tip: title: Tip description: The tip for the transaction type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,15})$ paymaster_data: title: Paymaster data type: array description: Data needed to allow the paymaster to pay for the transaction in native tokens items: title: Field element description: A field element. Represented by at most 63 hex digits type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ account_deployment_data: title: Account deployment data type: array description: Data needed to deploy the account contract from which this transaction will be initiated items: title: Field element description: A field element. Represented by at most 63 hex digits type: string pattern: ^0x(0|[a-fA-F1-9]{1}[a-fA-F0-9]{0,62})$ nonce_data_availability_mode: title: Nonce DA mode description: | The storage domain of the account's nonce (an account has a nonce per DA mode) type: string enum: - L1 - L2 fee_data_availability_mode: title: Fee DA mode description: | The storage domain of the account's balance from which the fee will be charged type: string enum: - L1 - L2 ```