# SignalHarness Crosschain Asset Flow Reconstructor

> SignalHarness Crosschain Asset Flow Reconstructor is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).

Reconstructs and analyzes cross-chain asset transfer flows from caller-supplied transaction data, producing a ledger of per-account in/out/net flows across chains.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/crosschain_asset_flow_reconstruct/invoke
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-crosschain-asset-flow-reconstructor-b6280c2f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6O5Gm3X6KEnfIBJ1sLccv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability signalharness-crosschain-asset-flow-reconstructor-b6280c2f -d '<json body>'
```

Example prompt: Reconstruct the cross-chain asset flow for these transactions on Solana, Base, and Polygon — I need a full ledger showing which accounts had tokens flow in and out, and the net position for each, based on this transaction data: [paste your JSON here].

## When to prefer this

Choose this endpoint when you need to reconstruct a structured ledger of asset flows from caller-supplied transaction data spanning multiple chains (e.g. Solana, Base, Polygon). It is purpose-built for cross-chain flow analysis rather than single-chain explorers or general blockchain data queries. Prefer it when you need per-account in/out/net breakdowns across chains and assets in a single call.

## Known failure modes

- Missing or malformed request_json causes parse errors
- Asset equivalence or bridge links not supplied results in a warning and separate ledger entries rather than unified flows
- Unsupported chain identifiers may limit analysis scope
- Exceeding 65536 character limit on request_json causes rejection
- Ambiguous or conflicting transaction records may produce inaccurate net positions

## How this service works

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## Output

Returns a structured JSON ledger with per-account, per-asset, per-chain rows showing inflow, outflow, and net amounts, plus a total transfer count, the analyzed network scope, any warnings (e.g. missing bridge links), and the evidence scope indicating that data was caller-supplied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "request_json": {
   "type": "string",
   "maxLength": 65536,
   "minLength": 2
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Asset equivalence and bridge links must be supplied or remain separate."
   ],
   "service_id": "crosschain_asset_flow_reconstruct",
   "analysis_json": "{\"ledger\":[{\"account\":\"0x0000000000000000000000000000000000000001\",\"asset\":\"0x0000000000000000000000000000000000000001\",\"chain\":\"solana\",\"in\":\"0\",\"net\":\"-100\",\"out\":\"100\"},{\"account\":\"0x0000000000000000000000000000000000000002\",\"asset\":\"0x0000000000000000000000000000000000000001\",\"chain\":\"solana\",\"in\":\"100\",\"net\":\"100\",\"out\":\"0\"}],\"transfer_count\":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_asset_flow_reconstruct",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "30000",
   "resultSha256": "ac7a029cf5d8407ca8daebccb309349e05400a93a92f9456e5bc697b8b251c1f",
   "serviceVersion": "1.0.0",
   "settlementReference": "0x0000000000000000000000000000000000000000000000000000000000000000"
  },
  "artifacts": [],
  "requestId": "example-request",
  "executionId": "example-execution"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signalharness-crosschain-asset-flow-reconstructor-b6280c2f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from signalharness.ai](https://www.zero.xyz/host/signalharness.ai/llms.txt)