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Solana Signer & Writable Account Analyzer
x402
Solana Signer & Writable Account Analyzer is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Analyzes a Solana transaction or account list to classify each account as signer, writable, or read-only, with counts and warnings for edge cases like ALT-loaded accounts.
Price / call$0.01
Success—
StatusUnknown
How this service works
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Output
Returns a structured JSON analysis with a list of accounts (each with index, pubkey, is_signer, and is_writable flags), plus aggregate counts for signers, writable accounts, and read-only accounts, along with any warnings (e.g. ALT accounts needing explicit classification) and the analyzed network identifier.
Example use cases
Pre-submission transaction permission audit
“Before I submit this Solana transaction, analyze the accounts in this JSON and tell me which are marked as signers and which are writable — I want to make sure no unexpected accounts have write access.”
Debugging ALT-loaded account classification
“I'm getting errors with address lookup table accounts in my Solana transaction. Can you analyze this transaction JSON and flag any ALT-loaded accounts that are missing explicit writable or read-only classification?”
Smart contract account role inspection
“I built a Solana program and want to verify the account roles being used. Here's the transaction JSON — classify each account as signer, writable, or read-only and give me the totals for each category.”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/solana_signer_writable_analyze/invokeWhen to prefer
Choose this endpoint when you need programmatic, per-account classification of Solana transaction accounts into signer/writable/read-only roles — especially useful before transaction submission, during smart contract auditing, or when debugging address lookup table (ALT) account issues. It is a lightweight, stateless analysis that does not broadcast or simulate the transaction.
Side effects
- Malformed or non-parseable request_json returns an error
- Empty or too-short JSON input rejected by minLength constraint
- Oversized payload rejected by maxLength 65536 limit
- Ambiguous ALT account state triggers warnings rather than hard errors
- Non-Solana transaction format may produce incorrect or empty classifications
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Loaded ALT accounts require explicit writable/read-only classification."
],
"service_id": "solana_signer_writable_analyze",
"analysis_json": "{\"accounts\":[{\"index\":0,\"is_signer\":true,\"is_writable\":true,\"pubkey\":\"11111111111111111111111111111111\"},{\"index\":1,\"is_signer\":false,\"is_writable\":false,\"pubkey\":\"TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA\"}],\"readonly_count\":1,\"signer_count\":1,\"writable_count\":1}",
"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_signer_writable_analyze",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "10000",
"resultSha256": "41c19b8df4e0dbce500d172bc61d75a1eca9b753ed85e8823c0f1e50b91e616d",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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