# SignalHarness Agent Action Risk Indicator

> SignalHarness Agent Action Risk Indicator 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 proposed agent action described in JSON and returns a risk assessment with warnings about potential hazards or unsafe patterns.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/agent_action_risk_indicator/invoke
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-agent-action-risk-indicator-72fdccc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uUsSCPXIgDVRC31NUzrq7

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-agent-action-risk-indicator-72fdccc6 -d '<json body>'
```

Example prompt: Before I execute this next step, can you run a risk check on the action I'm about to take? Here's the action payload as JSON: {"tool": "send_email", "to": "cfo@company.com", "subject": "Wire transfer request", "body": "Please transfer $50,000..."}

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call safety gate before an AI agent executes a potentially risky action — especially in autonomous pipelines where human oversight is limited. It is well-suited for catching dangerous patterns (e.g. destructive commands, financial transfers, prompt injections) in agent tool calls before they are executed. Prefer this over building custom rule-based filters when you want an API-native, agent-friendly risk signal at $0.01 per check.

## Known failure modes

- Malformed or non-JSON request_json input causes validation failure
- Payload exceeds 65536 character limit returns an error
- Service returns warnings but still succeeds — warnings do not block execution
- Risk analysis is limited to caller-supplied data scope and cannot verify external state
- Empty or minimal JSON payloads may yield low-confidence or generic warnings

## 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 status field (e.g. 'succeeded'), an analysis_json string with the risk findings, a list of warnings about the caller-supplied data, and an evidence_scope field indicating whether the analysis is based on caller-supplied data. Also includes a cryptographic receipt with payment metadata, a resultSha256 hash for integrity verification, and artifacts array.

## 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": [
    "Verify the caller-supplied data before relying on this result."
   ],
   "service_id": "agent_action_risk_indicator",
   "analysis_json": "{\"example\":\"schema-valid caller-supplied data\"}",
   "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": "agent_action_risk_indicator",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "10000",
   "resultSha256": "9414c50487885c1613ce2a0dd99929179606822da120f58d3cd0329e5d12f478",
   "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-agent-action-risk-indicator-72fdccc6/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)