# Agent Inbox Message Triage Standard

> Agent Inbox Message Triage Standard is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-31).

Provides a paid decision procedure for AI agents to triage and classify messages in an agent inbox, returning structured routing or prioritization results.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-inbox-message-triage-standard?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-inbox-message-triage-standard-3ffb212d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5s9wPbvevdViy1_M7mpPh

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 agent-inbox-message-triage-standard-3ffb212d
```

Example prompt: I have a bunch of incoming messages in my agent inbox and need to triage them — can you run the standard inbox message triage decision procedure to classify and route what came in?

## When to prefer this

Choose this endpoint when an autonomous AI agent needs a structured, repeatable decision procedure for triaging and classifying messages in its inbox — particularly in x402-native agent architectures on Base where per-call USDC micropayments are acceptable and no persistent account relationship is needed. Prefer this over custom logic when you want a standardized, paid triage output with a machine-readable payload and timestamp.

## Known failure modes

- HTTP 402 returned if payment has not been settled — must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Invalid or missing 'input' object causes schema validation failure
- Unsupported HTTP method (not GET, HEAD, or DELETE) returns an error
- Payment signature mismatch or expired payment causes rejection
- Service handler error returns ok:false in result with no payload

## How this service works

Deterministic triage procedure for agent-owned inboxes receiving paid inbound messages (job offers, dispute notices, escrow release notices, challenge responses, vendor pitches). Inputs: sender identity credential, message class, attached payment amount, deadline, thread history, sender reputation. Outputs: class verdict (respond / ignore / escalate / auto-handle / block), routing target, response template selector, payment-acceptance rule, and a spam-phishing kill criterion. Includes fatigue

## Output

Returns a JSON object with ok and paid flags, the service slug, an ISO-8601 generatedAt timestamp, and a result payload containing the triage outcome — including handler success status and the structured classification or routing data for the inbox message.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Agent Inbox Message Triage Standard paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "payload": {
         "type": "object"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
        "selfPay": {
         "type": "boolean"
        },
        "transaction": {
         "type": "string"
        }
       }
      },
      "service": {
       "type": "string"
      },
      "provider": {
       "type": "string",
       "const": "K-2SO"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "payload": {
    "key": "value"
   },
   "service": "agent-inbox-message-triage-standard",
   "generatedAt": "2026-01-01T00:00:00.000Z"
  },
  "service": "agent-inbox-message-triage-standard",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-inbox-message-triage-standard-3ffb212d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)