# getPriorityFeeEstimate > For the complete documentation index, see [llms.txt](/docs/llms.txt). POST https://solana-mainnet.g.alchemy.com/v2/{apiKey} Calculate optimal priority fee recommendations for Solana transactions based on real-time network conditions. Reference: https://www.alchemy.com/docs/chains/solana/solana-api-endpoints/get-priority-fee-estimate ## Parameters | Name | Type | Required | Description | |------|------|----------|-------------| | Configuration | object | Yes | Single params object. Top-level keys are transaction, accountKeys, and options (nested). Put priorityLevel, recommended, etc. inside options. | ## Result **Priority fee estimate** (object): Optimal priority fee estimate and optional fee levels for different priority tiers. ## Example ### Request ```json { "jsonrpc": "2.0", "method": "getPriorityFeeEstimate", "params": [ { "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=", "options": { "priorityLevel": "High" } } ], "id": 1 } ``` ## Code Examples ### cURL ```bash curl --request POST \ --url https://solana-mainnet.g.alchemy.com/v2/docs-demo \ --header 'Content-Type: application/json' \ --data '{ "jsonrpc": "2.0", "id": 1, "method": "getPriorityFeeEstimate", "params": [ { "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=", "options": { "priorityLevel": "High" } } ] }' ``` ### JavaScript ```javascript const options = { method: 'POST', headers: {'Content-Type': 'application/json'}, body: JSON.stringify({ jsonrpc: '2.0', id: 1, method: 'getPriorityFeeEstimate', params: [ { transaction: 'AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=', options: {priorityLevel: 'High'} } ] }) }; fetch('https://solana-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://solana-mainnet.g.alchemy.com/v2/docs-demo" payload = { "jsonrpc": "2.0", "id": 1, "method": "getPriorityFeeEstimate", "params": [ { "transaction": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=", "options": { "priorityLevel": "High" } } ] } 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://solana-mainnet.g.alchemy.com/v2/docs-demo" payload := strings.NewReader("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"getPriorityFeeEstimate\",\n \"params\": [\n {\n \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=\",\n \"options\": {\n \"priorityLevel\": \"High\"\n }\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://solana-mainnet.g.alchemy.com/v2/docs-demo") .header("Content-Type", "application/json") .body("{\n \"jsonrpc\": \"2.0\",\n \"id\": 1,\n \"method\": \"getPriorityFeeEstimate\",\n \"params\": [\n {\n \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=\",\n \"options\": {\n \"priorityLevel\": \"High\"\n }\n }\n ]\n}") .asString(); ``` ### C# ```csharp using RestSharp; var options = new RestClientOptions("https://solana-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\": \"getPriorityFeeEstimate\",\n \"params\": [\n {\n \"transaction\": \"AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=\",\n \"options\": {\n \"priorityLevel\": \"High\"\n }\n }\n ]\n}", false); var response = await client.PostAsync(request); Console.WriteLine("{0}", response.Content); ``` ## OpenRPC Method Specification ```yaml name: getPriorityFeeEstimate description: Calculate optimal priority fee recommendations for Solana transactions based on real-time network conditions. params: - name: Configuration required: true description: Single params object. Top-level keys are transaction, accountKeys, and options (nested). Put priorityLevel, recommended, etc. inside options. schema: title: GetPriorityFeeEstimate Parameters type: object description: | The single element in params (the config object). This object has two levels: - Top-level: transaction (optional), accountKeys (optional), and options (optional). - Put priorityLevel, recommended, lookbackSlots, etc. inside the options object, not next to transaction. properties: transaction: type: string description: Base58 or Base64 encoded Solana transaction for fee estimation analysis. Top-level key (sibling to options). accountKeys: type: array description: Array of Base58-encoded Solana account public keys. Top-level key (sibling to options). items: type: string options: description: Nested object for tuning; put priorityLevel, recommended, lookbackSlots, etc. here. title: GetPriorityFeeEstimate Options (nested) type: object properties: transactionEncoding: type: string enum: - base58 - base64 description: Encoding format of the transaction (default base58). priorityLevel: type: string enum: - Min - Low - Medium - High - VeryHigh - UnsafeMax - Default description: 'Priority level for fee estimation. Each level maps to a percentile of recent fees: Min (0th), Low (25th), Medium (50th), High (75th), VeryHigh (95th), UnsafeMax (100th).' includeAllPriorityFeeLevels: type: boolean description: When true, return estimates for all priority levels. ignoreZeroFees: type: boolean description: When true, exclude zero-fee transactions from percentile calculation. lookbackSlots: type: integer minimum: 1 maximum: 150 description: Number of recent slots to analyze for fee estimation. Default and max is 150. recommended: type: boolean default: false description: When true, return the recommended optimal fee (median). detailedBreakdown: type: boolean default: false description: When true, return per-account fee breakdown. examples: - name: getPriorityFeeEstimate with transaction params: - name: Configuration value: transaction: AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU= options: priorityLevel: High result: name: Priority fee estimate description: Optimal priority fee estimate and optional fee levels for different priority tiers. schema: title: Priority Fee Estimate Result type: object description: Optimal priority fee estimate and optional fee levels for different priority tiers. properties: priorityFee: type: integer description: Estimated optimal fee in microlamports per compute unit (returned when a single priorityLevel or recommended is requested). priorityFeeLevels: description: Fee estimates for each priority tier (returned when includeAllPriorityFeeLevels is true). title: Priority Fee Levels type: object properties: min: type: number description: Minimum (0th percentile) priority fee in microlamports. low: type: number description: Low (25th percentile) priority fee in microlamports. medium: type: number description: Medium (50th percentile) priority fee in microlamports. high: type: number description: High (75th percentile) priority fee in microlamports. veryHigh: type: number description: Very high (95th percentile) priority fee in microlamports. unsafeMax: type: number description: Unsafe maximum (100th percentile) priority fee in microlamports. detailedBreakdown: type: array description: Per-account fee breakdown (returned when detailedBreakdown option is true). items: title: Account Fee Details type: object properties: account: type: string description: Base58-encoded account public key. priorityFees: description: Fee estimates for this specific account. title: Priority Fee Levels type: object properties: min: type: number description: Minimum (0th percentile) priority fee in microlamports. low: type: number description: Low (25th percentile) priority fee in microlamports. medium: type: number description: Medium (50th percentile) priority fee in microlamports. high: type: number description: High (75th percentile) priority fee in microlamports. veryHigh: type: number description: Very high (95th percentile) priority fee in microlamports. unsafeMax: type: number description: Unsafe maximum (100th percentile) priority fee in microlamports. ```