# SignalHarness Agent Regression Report Runner

> SignalHarness Agent Regression Report Runner is a paid API for AI agents from signalharness.ai, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-16).

Runs a regression report on caller-supplied JSON data and returns structured analysis results with warnings and evidence scope metadata.

## Facts

- Endpoint: POST https://signalharness.ai/api/agent/services/agent_run_regression_report/invoke
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signalharness-agent-regression-report-runner-f56343f4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Rw-Pn2sy9JBP1WMp-rWfp

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-regression-report-runner-f56343f4 -d '<json body>'
```

Example prompt: Run a regression report on this JSON payload for me: {"model":"v2","accuracy":0.87,"baseline_accuracy":0.91} — I want to know if there are any regressions and see the full analysis.

## When to prefer this

Choose this endpoint when you need a pay-per-call, agent-native regression analysis on arbitrary JSON data without standing up your own infrastructure. It is well-suited for AI agents that need on-demand regression checks as part of automated pipelines, especially when paying with Base USDC via x402 is acceptable. Prefer it over self-hosted solutions when low per-call cost ($0.025 USDC) and minimal setup matter.

## Known failure modes

- Invalid or malformed request_json input (too short, non-JSON string) returns a validation error
- Payload exceeds 65536 character limit causing rejection
- Payment failure on Base network results in non-execution
- Service unavailable returns error status
- Caller-supplied data warnings always present — result reliability depends on input quality

## 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 ('succeeded' or error), an analysis_json string with the regression report findings, a list of warnings (e.g. reminders to verify caller-supplied data), an evidence_scope indicating data provenance, and a receipt object with payment details including USDC amount, network, execution IDs, and a SHA-256 hash of the result.

## 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_run_regression_report",
   "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_run_regression_report",
   "executionId": "example-execution",
   "startedAtMs": 0,
   "amountAtomic": "25000",
   "resultSha256": "01a693dd1722f6165efc6a3fff387e119c9b85f4d9aaa023837ca0cb2c004726",
   "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-regression-report-runner-f56343f4/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)