getPriorityFeeEstimate

POST

curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getPriorityFeeEstimate",
  "params": [
    {
      "transaction": "LxzhDW7TapzziJVHEGPh1QjmZB6kjNqmvuJ9gmihBGEkzw2N8ospDq32UZdVmKWzRZqKuyvhp7xmLvsmmHa3MfxVKpYoLV9cPkw5isHnHgDUwLSMsDaZ4dLEULexXAvuV9k6fLD2LMhFKM6gqH6j69GQLAm1g4e3z5ZVZN6pmJdSmZ4PqKcwNn4sS7E3Abp1hV59uBJB9i4jEdEAh28rZ8WCeNizzEmrJZFhatFFFGSDsk23jDPEjbkMcoRWXKf1WthFScC2S6Wz284Dtjqp7kW8eybV3DpmN9DtBbcfFNQPtUwmiBZCKszdYym5AjJvRHiUKUdMwFpC3toPnMvTmKZ9iHQtzZRkg5xBufRtUN5eVYJfdw2DxzH6RfqhC2rAjfSbfJA4wmaq9f5eUe2iEjmqvne6r85PPcHBJzyqkVtAyUFtTc9DfU8UiM9rFhQ2UB71M6m5UCsC6EwowMw5k8iF8rL7iPCLdubVdy8S58DPLNG4E4rdosev1T63YdRWSgEwBZh7iX4zGBA9AKAm3B9itCSxLSL46Y6uZgVku9UXsMcWWz3URoa6hRbo55CYPLhrVeqjqX5DsXpaG6QkngbEaESQUnkakE1AFkYXmNXEd2m3sLRTYB2o5UTkwkJS2u5sJHyYqAvXr3vFZr7qAYFLD3LwS5tsdb45ZQVQwsbnNddMHgkpmSqLHS6Fv1epxqHbzpRCU1tgMsriApVWC3pj2LLD41HxkV8aKvkVyHgJFACUtbvRBZAasHf1F71Gz3qZNTdh3efWsZJRXnfxKPbATU7NTMaMUL8JjknfoVwp3/SsAUIMHFzjQMQmoiQMSL1q+S+r9dLR55BgaWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAG3fbh12Whk9nL4UbO63msHLSF7V9bN5E6jPWFfv8AqQECAwABDAIAAAAEAAAAAAAA"
    }
  ]
}
'

{
  "jsonrpc": "2.0",
  "result": {
    "priorityFeeEstimate": 120000
  },
  "id": "1"
}

Authorizations

api-key

string

query

required

Your Helius API key. You can get one for free in the dashboard.

Body

application/json

jsonrpc

enum<string>

default:2.0

JSON-RPC version identifier for the Solana RPC API request, must be "2.0"

Available options:

2.0

string

default:1

Client-generated identifier for the request

method

enum<string>

default:getPriorityFeeEstimate

The RPC method name

Available options:

getPriorityFeeEstimate

params

object[]

Parameters for the method call

Show child attributes

params.transaction

string

Base58 or Base64 encoded Solana transaction for which to estimate optimal priority fees. The API will analyze the specific instructions and accounts in this transaction to provide accurate fee estimates based on current network conditions and computational complexity.

params.accountKeys

string[]

Array of Solana account public keys to estimate priority fees for (alternative to providing a transaction)

Base58 encoded public key of a Solana account

params.options

object

Advanced options for customizing Solana priority fee estimation based on network conditions

Show child attributes

params.options.transactionEncoding

enum<string>

Encoding format of the provided Solana transaction

Available options:

Base58,

Base64

params.options.priorityLevel

enum<string>

Specific priority level to estimate fees for based on current Solana network congestion

Available options:

Min,

Low,

Medium,

High,

VeryHigh,

UnsafeMax

params.options.includeAllPriorityFeeLevels

boolean

When true, returns comprehensive estimates for all priority levels from minimum to maximum

params.options.lookbackSlots

integer

Number of recent Solana blockchain slots to analyze for accurate fee estimation (1-150)

Required range: 1 <= x <= 150

params.options.includeVote

boolean

When true, includes vote transactions in the fee calculation for more comprehensive analysis

params.options.recommended

boolean

When true, returns the recommended optimal fee based on current Solana network conditions

params.options.evaluateEmptySlotAsZero

boolean

When true, slots with no transactions are counted as zero-fee slots in the calculation

Response

Successfully retrieved Solana priority fee estimates

jsonrpc

enum<string>

JSON-RPC version identifier

Available options:

2.0

string

Client-generated identifier matching the request

result

object

Result object containing comprehensive Solana priority fee estimates

Show child attributes

result.priorityFeeEstimate

number<float>

Estimated optimal priority fee in microlamports for the requested Solana transaction, calculated based on recent blockchain activity and computational requirements.

result.priorityFeeLevels

object

Detailed fee estimates for different priority levels on the Solana blockchain (in microlamports), allowing developers to choose the optimal balance between cost and confirmation speed.

Show child attributes

result.priorityFeeLevels.min

number<float>

Minimum viable fee for Solana transactions - suitable for non-urgent transactions during low congestion periods (may result in transaction failure during network congestion)

result.priorityFeeLevels.low

number<float>

Low priority fee for Solana transactions - economical option for transactions that aren't time-sensitive (longer confirmation time, lower cost)

result.priorityFeeLevels.medium

number<float>

Medium priority fee for Solana transactions - balanced option for most standard transactions (reasonable confirmation time with moderate cost)

result.priorityFeeLevels.high

number<float>

High priority fee for Solana transactions - prioritized processing for time-sensitive operations like DeFi trades or NFT mints (faster confirmation, higher cost)

result.priorityFeeLevels.veryHigh

number<float>

Very high priority fee for Solana transactions - premium option for critical transactions requiring near-immediate confirmation (very fast confirmation, premium cost)

result.priorityFeeLevels.unsafeMax

number<float>

Maximum observed fee on Solana - the highest fee seen in the analysis window, representing an upper bound during extreme congestion (fastest possible confirmation, but potentially unnecessarily high)

OverviewThis page provides an overview of all available Enhanced Transactions API endpoints for working with parsed and raw transaction data on Solana.

⌘I

curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "getPriorityFeeEstimate",
  "params": [
    {
      "transaction": "LxzhDW7TapzziJVHEGPh1QjmZB6kjNqmvuJ9gmihBGEkzw2N8ospDq32UZdVmKWzRZqKuyvhp7xmLvsmmHa3MfxVKpYoLV9cPkw5isHnHgDUwLSMsDaZ4dLEULexXAvuV9k6fLD2LMhFKM6gqH6j69GQLAm1g4e3z5ZVZN6pmJdSmZ4PqKcwNn4sS7E3Abp1hV59uBJB9i4jEdEAh28rZ8WCeNizzEmrJZFhatFFFGSDsk23jDPEjbkMcoRWXKf1WthFScC2S6Wz284Dtjqp7kW8eybV3DpmN9DtBbcfFNQPtUwmiBZCKszdYym5AjJvRHiUKUdMwFpC3toPnMvTmKZ9iHQtzZRkg5xBufRtUN5eVYJfdw2DxzH6RfqhC2rAjfSbfJA4wmaq9f5eUe2iEjmqvne6r85PPcHBJzyqkVtAyUFtTc9DfU8UiM9rFhQ2UB71M6m5UCsC6EwowMw5k8iF8rL7iPCLdubVdy8S58DPLNG4E4rdosev1T63YdRWSgEwBZh7iX4zGBA9AKAm3B9itCSxLSL46Y6uZgVku9UXsMcWWz3URoa6hRbo55CYPLhrVeqjqX5DsXpaG6QkngbEaESQUnkakE1AFkYXmNXEd2m3sLRTYB2o5UTkwkJS2u5sJHyYqAvXr3vFZr7qAYFLD3LwS5tsdb45ZQVQwsbnNddMHgkpmSqLHS6Fv1epxqHbzpRCU1tgMsriApVWC3pj2LLD41HxkV8aKvkVyHgJFACUtbvRBZAasHf1F71Gz3qZNTdh3efWsZJRXnfxKPbATU7NTMaMUL8JjknfoVwp3/SsAUIMHFzjQMQmoiQMSL1q+S+r9dLR55BgaWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAG3fbh12Whk9nL4UbO63msHLSF7V9bN5E6jPWFfv8AqQECAwABDAIAAAAEAAAAAAAA"
    }
  ]
}
'

{
  "jsonrpc": "2.0",
  "result": {
    "priorityFeeEstimate": 120000
  },
  "id": "1"
}

API Reference

Solana RPC APIs

Solana APIs

Data Streaming APIs

Event Listening APIs

Deprecated APIs

getPriorityFeeEstimate

Authorizations

Body

Response