# SignalHarness Wallet Counterparty Summary

> SignalHarness Wallet Counterparty Summary is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Analyzes caller-supplied wallet or transaction data to produce a structured summary of counterparty entities and any associated warnings.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/wallet_counterparty_summary/invoke
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-wallet-counterparty-summary-813009b4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j2_nEimBZeqy6iwHiw0zt

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-wallet-counterparty-summary-813009b4 -d '<json body>'
```

Example prompt: Can you give me a counterparty summary for this wallet interaction — the other party sent from 0x1234...abcd on Base and I want to know what entity or risk profile is associated with them?

## When to prefer this

Choose this endpoint when you need a rapid, agent-native, pay-per-call counterparty intelligence summary from free-form wallet or transaction text. It is best suited for on-chain workflows on Base where you want structured warnings and entity classification without setting up a full blockchain analytics subscription. Prefer this over manual on-chain lookups when you need a synthesized narrative summary with warnings in a single API call.

## Known failure modes

- Empty or malformed wallet_counterparty_request string returns a validation error
- Request string below 2 characters or above 65536 characters is rejected
- Insufficient USDC payment via x402 results in 402 Payment Required response
- Ambiguous or unstructured input may yield low-confidence or generic summary output
- Network issues on Base (eip155:8453) may cause payment settlement delays

## How this service works

Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.

## Output

Returns a JSON object containing a wallet_counterparty_summary field with a narrative or structured summary of the counterparty, a warnings array listing any flags or concerns, an evidence_scope field indicating the source of analysis (caller-supplied data), and a full receipt with payment, execution, and integrity metadata including a SHA-256 result hash.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "Labels and identities are not inferred or verified."
   ],
   "service_id": "wallet_counterparty_summary",
   "evidence_scope": "caller_supplied_data",
   "wallet_counterparty_summary": "{\"counterparties\":{\"0x0000000000000000000000000000000000000002\":{\"in\":0,\"interaction\":1,\"out\":0}},\"counterparty_count\":1}"
  },
  "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": "wallet_counterparty_summary",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "ae8591a6683be5882ac5d4d9e903a4f6d3b2c181f1e68d6b792454aa950d0d35",
   "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-wallet-counterparty-summary-813009b4/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)