# x402 Endpoint Uptime & Latency History

> x402 Endpoint Uptime & Latency History is a paid API for AI agents from app-production-cd86.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns uptime percentage, average/p95 latency, daily breakdown, and price-change count for any x402 API endpoint over a 1–30 day window, sourced from automated probes every 10 minutes.

## Facts

- Endpoint: GET https://app-production-cd86.up.railway.app/v1/scout/uptime
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-endpoint-uptime-latency-history-e49000ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RlagRRdIeA7nHlzmFFNMH

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 x402-endpoint-uptime-latency-history-e49000ae
```

Example prompt: Can you pull up the uptime and latency history for https://api.example.com/v1/weather over the last 30 days — I want to see the daily breakdown and p95 latency before I start depending on it?

## When to prefer this

Use this endpoint when you need historical reliability data (uptime %, latency percentiles, daily trends) for a specific x402 API URL before committing to it in production, or when evaluating SLA compliance over time. Unlike the live health-check sibling endpoint, this provides trend data over days rather than a single point-in-time probe.

## Known failure modes

- URL not found in Bazaar catalog — endpoint has not been probed yet
- Invalid days parameter (must be 1–30)
- Target URL is missing or malformed
- No historical data available for very new endpoints
- Payment failure for the $0.01 USDC per call fee

## How this service works

Uptime and latency history for any x402 endpoint in the Bazaar catalog: uptime percent, average and p95 latency, daily breakdown and price-change count over the last 7-30 days, from continuous automated probing every 10 minutes. Reliability data no one else tracks — like a status page for the whole x402 economy.

## Output

Returns uptime percentage, average latency, p95 latency, a day-by-day breakdown, and price-change count for the specified x402 endpoint over the requested window (1–30 days).

## 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",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Full https URL"
      },
      "days": {
       "type": "number",
       "description": "Window 1-30 days (default 7)"
      }
     }
    }
   },
   "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/x402-endpoint-uptime-latency-history-e49000ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app-production-cd86.up.railway.app](https://www.zero.xyz/host/app-production-cd86.up.railway.app/llms.txt)