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Solana Versioned Transaction Decoder
x402
Solana Versioned Transaction Decoder is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.015/call, status unknown (last checked 2026-09-13).
Decodes and analyzes a Solana versioned transaction, extracting its structure including instructions, account keys, header, blockhash, and address table lookups.
Price / call$0.015
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object containing the decoded transaction analysis including: transaction version (legacy or v0), compiled instructions, static account keys, address table lookups, transaction header (number of required signatures, readonly signed/unsigned accounts), recent blockhash, total serialized byte count, signature count, and any warnings (e.g. about unresolved lookup table addresses). Also includes metadata such as service ID, analyzed network (solana), and evidence scope.
Example use cases
Inspect a suspicious on-chain transaction
“I got this Solana transaction JSON and I want to understand exactly what it's doing — can you decode it and show me all the instructions, which accounts it touches, and what version format it uses?”
Debug a failed Solana transaction submission
“My Solana transaction failed and I need to inspect its raw structure to figure out what went wrong. Here's the transaction JSON — can you decode it and list out the compiled instructions and account keys?”
Audit a Solana DeFi transaction before signing
“Before I sign this Solana versioned transaction, I want to know exactly what accounts are involved and what instructions it contains — can you decode it and summarize the structure?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/solana_versioned_transaction_decode/invokeWhen to prefer
Choose this endpoint when you need to programmatically decode and inspect a Solana versioned transaction (legacy or v0) without submitting it to the network. It is ideal for auditing, debugging, or extracting structured data from raw Solana transaction payloads. Prefer this over RPC-based approaches when you want a clean JSON breakdown of transaction internals without requiring a live Solana node connection.
Side effects
- Malformed or invalid transaction JSON returns an error — input must be valid JSON string
- Address table lookups may not be fully resolved if lookup table data is not supplied by the caller, generating warnings
- Unsupported transaction format or version may cause parse failure
- Input exceeding 65536 character limit will be rejected
- Network or service availability issues may cause transient failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Loaded lookup addresses require caller-supplied table data."
],
"service_id": "solana_versioned_transaction_decode",
"analysis_json": "{\"address_table_lookups\":[],\"compiled_instructions\":[],\"header\":{\"numReadonlySignedAccounts\":0,\"numReadonlyUnsignedAccounts\":0,\"numRequiredSignatures\":1},\"recent_blockhash\":\"11111111111111111111111111111111\",\"serialized_bytes\":134,\"signature_count\":1,\"static_account_keys\":[\"11111111111111111111111111111111\"],\"version\":\"legacy\"}",
"evidence_scope": "caller_supplied_data",
"analyzed_network": "solana"
},
"status": "succeeded",
"receipt": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"usage": [],
"status": "succeeded",
"network": "eip155:8453",
"artifacts": [],
"endedAtMs": 0,
"latencyMs": 0,
"paymentId": "example-payment",
"receiptId": "example-receipt",
"requestId": "example-request",
"serviceId": "solana_versioned_transaction_decode",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "15000",
"resultSha256": "12d966f0f5d7e73cadfc54ec122feabf1846eb64d2571dde3b1b04fd73a23444",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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