# SignalHarness Create Address Compute

> SignalHarness Create Address Compute 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).

Generates a blockchain address (or address-related computation) from a caller-supplied request string, returning the computed address and evidence scope.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/create_address_compute/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-create-address-compute-28788c1b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_L2tEeuLaBRS__89jHCtff

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-create-address-compute-28788c1b -d '<json body>'
```

Example prompt: Use SignalHarness to compute a new blockchain address from this specification: 'generate a Base network USDC receiving address for my agent wallet labeled agent-treasury-001'.

## When to prefer this

Choose this endpoint when an AI agent needs to programmatically compute or derive a blockchain address from a structured natural-language or data request, particularly in Base network / EVM workflows where micropayment per-call pricing ($0.01 USDC) is acceptable and a cryptographic receipt with result hash is needed for auditability.

## Known failure modes

- Invalid or empty create_request string (violates minLength/maxLength constraints)
- Request string too long (exceeds 65536 characters)
- Payment failure or insufficient USDC balance (x402 payment required)
- Malformed request semantics that the compute engine cannot interpret
- Network or settlement errors resulting in non-succeeded status

## 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 the computed blockchain address (create_address), any warnings, an evidence_scope indicating caller_supplied_data, a status field ('succeeded'), and a full receipt with payment metadata including paymentId, receiptId, requestId, executionId, network, asset, amountAtomic, resultSha256, and timestamps.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "replay": false,
  "result": {
   "warnings": [
    "A computed address does not prove deployment or transaction inclusion."
   ],
   "service_id": "create_address_compute",
   "create_address": "{\"address\":\"0x535B3D7A252fa034Ed71F0C53ec0C6F784cB64E1\"}",
   "evidence_scope": "caller_supplied_data"
  },
  "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": "create_address_compute",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "8e49c529499b58cdc81cc82a00108bd2de6c6a0dfbeadc2deaca78dd8013e0bc",
   "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-create-address-compute-28788c1b/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)