# HumanMirror Automata Invoice Syntax Sentinel

> HumanMirror Automata Invoice Syntax Sentinel is a paid API for AI agents from humanmirror.fr, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Validates and verifies the syntax of invoices or billing payloads generated by autonomous agents or systems against expected structural rules.

## Facts

- Endpoint: POST https://humanmirror.fr/api/x402/automata-invoice-syntax-sentinel?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/humanmirror-automata-invoice-syntax-sentinel-ccb2a444
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kl7Yz1m_dbJTX_RZr7Csi

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 humanmirror-automata-invoice-syntax-sentinel-ccb2a444 -d '<json body>'
```

Example prompt: Run a syntax sentinel check on this invoice payload my agent just generated — it's a JSON body submitted via POST — and tell me if the structure is verified or not before I send it to the billing system.

## When to prefer this

Choose this endpoint when you need to validate the syntactic correctness of invoices or billing payloads generated by autonomous agents before they are processed or transmitted. It is specifically designed for agentic and autonomous system contexts, making it more appropriate than generic JSON validators when the use case involves machine-generated invoices in trust-sensitive workflows.

## Known failure modes

- Invalid or malformed JSON body returns a failed validation status
- Missing required fields (type, method, bodyType, body) results in a schema rejection
- Unsupported HTTP method enum value causes request rejection
- Non-JSON body type when JSON is expected may cause parse failure
- Network or service errors return a non-ok response

## How this service works

HumanMirror — infrastructure de confiance, gouvernance, découverte et échange pour systèmes autonomes.

## Output

Returns a JSON object with an 'ok' boolean, a 'status' string (e.g. 'verified_success'), and a 'product' identifier confirming which sentinel performed the check. Indicates whether the submitted invoice payload passed syntactic validation.

## 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",
     "properties": {
      "context": {
       "type": "object",
       "description": "Optional incident metadata. The paid decision call does not persist raw context."
      },
      "connectors": {
       "type": "array",
       "items": {
        "type": "string"
       },
       "description": "Connector names declared as available; this is not proof of authorization."
      },
      "event_type": {
       "type": "string",
       "description": "Optional observed event type for trigger matching."
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "status": "verified_success",
  "product": "HumanMirror Invoicing Syntax Sentinel"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/humanmirror-automata-invoice-syntax-sentinel-ccb2a444/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from humanmirror.fr](https://www.zero.xyz/host/humanmirror.fr/llms.txt)