# Umpire Sworn Verdict (Double-Pass Async)

> Umpire Sworn Verdict (Double-Pass Async) is a paid API for AI agents from umpire.vimabrosta.com, paid per call via x402, $5/call, status unknown (last checked 2026-09-14).

Runs a deliverable through all acceptance checks twice, spaced ~1 minute apart, and issues a cryptographically signed pass/fail verdict only if both passes succeed — designed for ERC-8183 escrow release evidence.

## Facts

- Endpoint: POST https://umpire.vimabrosta.com/v1/verdicts/sworn
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/umpire-sworn-verdict-double-pass-async-9c04c87d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wR-fi9-B1PEZxWKQso7jJ

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 umpire-sworn-verdict-double-pass-async-9c04c87d -d '<json body>'
```

Example prompt: Run a highest-assurance sworn verdict on this deliverable JSON — check that it matches my JSON schema and the content hash equals 'abc123', run both checks twice spaced a minute apart, and send the signed final verdict to https://myapp.com/webhook when done.

## When to prefer this

Choose this endpoint over the basic or standard verdict tiers when you need the highest assurance level — specifically when escrow release is at stake, when you suspect a deliverable might be staged briefly to pass a one-shot check, or when you need a cryptographically signed document as on-chain or legal evidence under ERC-8183. Use it when a false positive would be costly and an async workflow (webhook or polling) is acceptable. Prefer the synchronous basic tier for lower-stakes, latency-sensitive checks.

## Known failure modes

- Either verification pass fails → overall verdict is 'fail', signed document reflects failure
- Deliverable or spec malformed → 400-class error before any checks run
- URL probe check targets an unreachable or slow endpoint → probe check fails
- Webhook URL unreachable → signed document must be retrieved via polling
- Deliverable changes between pass 1 and pass 2 (content_hash mismatch on second pass) → fail verdict
- Payment not processed ($5 USDC required) → request rejected before processing
- Checks array empty or exceeds 10 items → schema validation error

## How this service works

Highest assurance verdict: all checks run twice, spaced about a minute apart, and pass only if both passes pass, so a deliverable staged briefly cannot sneak through. Asynchronous: instant first pass result, webhook or free polling for the signed final document. Designed for the ERC-8183 evaluator role and escrow release evidence. $5.00 per verdict.

## Output

An instant first-pass result is returned immediately; the final cryptographically signed verdict document is delivered asynchronously (via webhook POST to the provided URL or via free polling) once both verification passes have completed roughly a minute apart. The signed document records whether all checks passed in both passes and serves as tamper-evident escrow release evidence.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "spec"
     ],
     "properties": {
      "spec": {
       "type": "object",
       "required": [
        "checks"
       ],
       "properties": {
        "checks": {
         "type": "array",
         "items": {
          "type": "object",
          "required": [
           "type"
          ],
          "properties": {
           "type": {
            "enum": [
             "json_schema",
             "json_path",
             "content_hash",
             "regex",
             "length",
             "url_probe"
            ],
            "type": "string"
           }
          }
         },
         "maxItems": 10,
         "minItems": 1
        }
       }
      },
      "job_ref": {
       "type": "string",
       "maxLength": 200
      },
      "deliverable": {
       "type": "object",
       "properties": {
        "json": {},
        "text": {
         "type": "string"
        }
       }
      },
      "webhook_url": {
       "type": "string",
       "format": "uri"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/umpire-sworn-verdict-double-pass-async-9c04c87d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from umpire.vimabrosta.com](https://www.zero.xyz/host/umpire.vimabrosta.com/llms.txt)