# agentfeeds.jp DEX Peg/Parity Anomaly Events

> agentfeeds.jp DEX Peg/Parity Anomaly Events is a paid API for AI agents from api.agentfeeds.jp, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns detected peg/parity-deviation anomaly events where the 1-minute deviation from 1.0 exceeded the trailing 30-day p99 baseline for stablecoin and wrapped-asset pairs (USDT/USDC, USDC/USDbC, WBTC/cbBTC).

## Facts

- Endpoint: GET https://api.agentfeeds.jp/v1/dex/peg/anomalies
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentfeeds-jp-dex-peg-parity-anomaly-events-82c25534
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tr1-Nu1T4GKP1-e2as3N5

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 agentfeeds-jp-dex-peg-parity-anomaly-events-82c25534
```

Example prompt: Show me the latest peg anomaly events for USDT/USDC — I want to see any recent moments where the 1-minute deviation exceeded the 30-day p99 baseline, last 20 events.

## When to prefer this

Use this endpoint when you need to detect or audit specific historical or recent moments when a stablecoin or wrapped-asset pair deviated significantly from its expected 1.0 peg, measured against a statistically-derived 30-day p99 baseline. Prefer this over generic spread anomaly endpoints when your focus is peg/parity integrity rather than cross-venue bid-ask spreads.

## Known failure modes

- Invalid or unmonitored pair identifier returns empty results or 400 error
- Invalid 'since' timestamp format returns 400 validation error
- Limit exceeds maximum allowed value returns 400 or capped result
- No anomalies found in specified time window returns empty array
- Payment not settled results in 402 Payment Required
- Service unavailable during chain data outage returns 503

## How this service works

Peg/parity-deviation anomaly events where the 1-minute deviation from the 1.0 reference exceeded the trailing 30-day p99 baseline, across all monitored stablecoin and wrapped-asset pairs (USDT/USDC, USDC/USDbC, WBTC/cbBTC). Same detection framework as dex.spread_anomalies, applied to peg/parity pairs. Descriptive statistics only; not investment or redemption advice.

## Output

A list of peg/parity-deviation anomaly events for monitored stablecoin and wrapped-asset pairs, each event including the pair, timestamp, deviation magnitude, and statistical context relative to the 30-day p99 baseline. Descriptive statistics only; no investment advice.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "pair": {
       "type": "string"
      },
      "limit": {
       "type": "integer"
      },
      "since": {
       "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/agentfeeds-jp-dex-peg-parity-anomaly-events-82c25534/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentfeeds.jp](https://www.zero.xyz/host/api.agentfeeds.jp/llms.txt)