# Agent Payment Wash Volume Detection

> Agent Payment Wash Volume Detection is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).

Returns a deterministic decision procedure brief for identifying wash payments and inflated volume in agent payment ledgers, marketplace rankings, and bazaar activity.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/agent-payment-wash-volume-detection-deterministi?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-payment-wash-volume-detection-bf991fcb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_N8JHYxYx0Gk9JNVsizsDe

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-payment-wash-volume-detection-bf991fcb
```

Example prompt: Before I trust this merchant's ranking on the bazaar, run the wash volume detection procedure on their payment ledger and tell me which entries look like self-pay or inflated volume.

## When to prefer this

Choose this endpoint when you need a deterministic, structured decision procedure specifically focused on data integrity of payment ledgers and volume signals — distinguishing real transactions from wash trades or self-pay. Use this before trusting merchant rankings or bazaar activity scores, not for merchant reputation vetting (use a merchant vetting endpoint) or for resolving payment disputes (use a dispute resolution endpoint). Best suited for the pre-trust data-integrity phase of agent payment workflows.

## Known failure modes

- Payment not received — returns 402 status requiring x402 payment
- Invalid query parameters — unrecognized 'meta' or 'topic' values may be ignored or rejected
- Service unavailable — upstream K-2SO provider is unreachable
- Empty or malformed ledger context — procedure may return generic guidance without specifics
- Rate limiting or quota exceeded on the ascii.dev host

## How this service works

Paid agent-facing brief on agent-payment-wash-volume-detection: deterministic procedure to identify wash payments and inflated volume in agent payment ledgers, marketplace rankings, and bazaar activity, so agents can filter fake volume before trusting a merchant or a ranking. Distinct from merchant vetting (reputation) and dispute resolution (contested delivery). This targets the data-integrity phase: given a ledger or ranked list of agent payments, decide which entries are wash (self-pay,

## Output

A paid response containing a structured decision procedure brief with prose guidance for agents on how to identify wash payments, self-pay entries, and inflated volume in payment ledgers or ranked lists. Includes the service slug, topic, generation source (llm/reasoning/deterministic), ISO-8601 timestamp, and an 'ok' status flag.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "agent-payment-wash-volume-detection: deterministic procedure to identi paid response",
     "$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"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-payment-wash-volume-detection-bf991fcb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)