Subscribe to Transactions

Transaction subscriptions allow you to monitor Solana transactions in real-time. This is crucial for DEX integrations, wallet monitoring, program event tracking, and transaction-based analytics.

Overview

Transaction subscriptions provide real-time updates for transactions matching your filter criteria. You can filter by:

• Transactions involving specific accounts
• Transactions calling specific programs
• Vote vs non-vote transactions
• Failed vs successful transactions
• Complex account inclusion/exclusion rules

Filter Structure

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message SubscribeRequestFilterTransactions {
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    optional bool vote = 1;
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    optional bool failed = 2;
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    optional string signature = 3;
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    repeated string account_include = 4;
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    repeated string account_exclude = 5;
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    repeated string account_required = 6;
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}

Filter Options

Vote Transactions

Control whether to include vote transactions (validator voting).

Field: vote
Type: optional bool

Values:

• true - Only vote transactions
• false - Only non-vote transactions
• null (unset) - Both vote and non-vote transactions

Use Cases:

• Set to false for most application use cases (excludes validator voting spam)
• Set to true only for validator monitoring or consensus analytics

Failed Transactions

Control whether to include failed transactions.

Field: failed
Type: optional bool

Values:

• true - Only failed transactions
• false - Only successful transactions
• null (unset) - Both successful and failed transactions

Use Cases:

• Set to false to monitor only successful transactions
• Set to true to analyze failure patterns
• Leave unset to see all transaction attempts

Signature Filter

Filter for a specific transaction signature.

Field: signature
Type: optional string

Use Cases:

• Track a specific transaction through confirmation stages
• Monitor a transaction you just submitted
• Verify transaction inclusion

Note: This filter is rarely used in streaming contexts because you must know the transaction signature ahead of time.

If you want to track the confirmation status of a transaction you are about to send (for example, a payment or program interaction), you can set up a subscription for the expected signature before submitting the transaction. This way, you will receive real-time updates as soon as the transaction is processed by the network.

Account Include

Receive transactions involving any of these accounts.

Field: account_include
Type: repeated string

Behavior: Transaction matches if it involves any of the specified accounts.

Use Cases:

• Monitor a user’s wallet for any activity
• Track transactions for a set of token accounts
• Watch multiple DEX programs

Account Exclude

Exclude transactions involving these accounts.

Field: account_exclude
Type: repeated string

Behavior: Transaction is excluded if it involves any of these accounts.

Use Cases:

• Exclude noise from specific accounts
• Filter out unwanted program interactions
• Remove specific token account activity

Account Required

Require all of these accounts to be present.

Field: account_required
Type: repeated string

Behavior: Transaction matches only if it involves all specified accounts.

Use Cases:

• Match specific program interactions (program + user account)
• Find transactions involving multiple specific accounts
• Narrow down to very specific transaction patterns

Combining Account Filters

Account filters work together:

1. Transaction must include at least one account_include (if specified)
2. Transaction must not include any account_exclude (if specified)
3. Transaction must include all account_required (if specified)

Example Logic:

if account_include is set:
    must match at least one
    
if account_exclude is set:
    must match none
    
if account_required is set:
    must match all

Response Structure

Transaction updates arrive as SubscribeUpdateTransaction messages:

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message SubscribeUpdateTransaction {
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    SubscribeUpdateTransactionInfo transaction = 1;
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    uint64 slot = 2;
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}
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message SubscribeUpdateTransactionInfo {
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    bytes signature = 1;
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    bool is_vote = 2;
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    solana.storage.ConfirmedBlock.Transaction transaction = 3;
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    solana.storage.ConfirmedBlock.TransactionStatusMeta meta = 4;
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    uint64 index = 5;
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}

Key Fields

signature: Transaction signature (unique identifier)
is_vote: Whether this is a vote transaction
meta: Transaction metadata including status, fees, logs, and account changes
transaction: The full transaction data including instructions
slot: Slot number where transaction was included
index: Transaction index within the block