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CrossChain Wallet Activity Comparator
x402
CrossChain Wallet Activity Comparator is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-15).
Compares and analyzes wallet activity across multiple blockchain networks (Solana, Base, Polygon) to identify transaction patterns, counterparties, and cross-chain behavior.
Price / call$0.025
Success—
StatusUnknown
How this service works
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Output
Returns a JSON analysis broken down by chain, including transaction counts, number of unique wallets, counterparty counts, fee details, and an overall ownership assumption flag. Also includes a list of wallet-level summaries with per-chain stats and an indication of which networks were analyzed (e.g. Solana, Base, Polygon).
Example use cases
Audit multi-chain wallet footprint
“Look up wallet 0xDEADBEEF...0001 and tell me how active it is across Base, Solana, and Polygon — I need transaction counts and any counterparties per chain.”
Cross-chain due diligence on a DeFi user
“I'm vetting a potential partner's wallet 0x1234...ABCD — can you pull their cross-chain activity on Base and Polygon so I can see their transaction history and who they've been transacting with?”
Detect same-owner wallets across chains
“I have a list of addresses — 0xAAA...111 on Base and some Solana addresses — can you analyze their cross-chain activity and flag any patterns that might suggest shared ownership?”
Technical details
Endpoint
POSThttps://signalharness.ai/api/agent/services/crosschain_wallet_activity_compare/invokeWhen to prefer
Use this endpoint when you need to compare wallet behavior across multiple heterogeneous blockchains (Solana, Base, Polygon) in a single call. Prefer it over single-chain explorers when the user wants a unified cross-chain view, or when you need to assess whether addresses on different networks might share an owner. It is especially useful for DeFi due diligence, wallet auditing, and cross-chain activity aggregation.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Unsupported chain identifier results in that chain being omitted from analysis
- No on-chain data found for an address returns zero transactions with warnings
- Malformed request_json string causes a parsing error
- Rate limiting or payment failure (x402) prevents execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| request_json | string |
Output
Schema · Response
{
"type": "json",
"example": {
"replay": false,
"result": {
"warnings": [
"Addresses are not assumed to share an owner across chains."
],
"service_id": "crosschain_wallet_activity_compare",
"analysis_json": "{\"by_chain\":{\"base\":{\"transactions\":\"1\",\"wallets\":1}},\"ownership_assumed\":false,\"wallets\":[{\"address\":\"0x0000000000000000000000000000000000000001\",\"chain\":\"base\",\"counterparties\":\"0\",\"fee_amount\":null,\"fee_unit\":null,\"index\":0,\"transactions\":\"1\"}]}",
"evidence_scope": "caller_supplied_data",
"analyzed_network": "solana_base_polygon"
},
"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": "crosschain_wallet_activity_compare",
"executionId": "example-execution",
"startedAtMs": 0,
"amountAtomic": "25000",
"resultSha256": "64740c85f2894f7bcbf22bbe4880494d000f055d5470d4ead059a920d2621826",
"serviceVersion": "1.0.0",
"settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
},
"artifacts": [],
"requestId": "example-request",
"executionId": "example-execution"
}
}Tags
x402
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