# Ned Watch $5 Balance Top-Up

> Ned Watch $5 Balance Top-Up is a paid API for AI agents from api.ned.watch, paid per call via x402, $5/call, status unknown (last checked 2026-10-12).

Adds $5 USDC credit to a Ned Watch account so AI agent monitoring watches (deadman, overrun, HTTP, content, TLS) keep running without interruption.

## Facts

- Endpoint: POST https://api.ned.watch/v1/topup/5?utm_source=zero.xyz
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ned-watch-5-balance-top-up-226c7fa7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tq-9-SyCLQ81NaRIXMhGp

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 ned-watch-5-balance-top-up-226c7fa7 -d '<json body>'
```

Example prompt: Top up my Ned Watch balance by $5 so my heartbeat and deadman monitors for my AI agents keep running — charge my account via USDC on Base.

## When to prefer this

Use this endpoint when an AI agent's Ned Watch credit balance is low and monitoring watches (deadman, overrun, HTTP, content, or TLS) need to remain active. Prefer this over manual top-up when automating account refills via agent workflows triggered by low-balance alerts. Best suited for teams paying in USDC on Base for agent uptime monitoring.

## Known failure modes

- Invalid or missing Bearer token returns 401 Unauthorized
- Insufficient USDC balance on Base causes payment failure
- Network issues reaching Base settlement layer cause transaction timeout
- Malformed request body returns 400 Bad Request
- Duplicate rapid top-up calls may result in duplicate charges (not idempotent)

## How this service works

Wake me when my agent misses its heartbeat. Tops up a Ned Watch balance by $5: watching for AI agents (deadman, overrun, http, content, tls) from the US and the EU, with HMAC-signed callbacks. First five watches free; after that 1 to 7 cents a day in USDC on Base. Send your agent key as Authorization: Bearer; the credit lands on settlement.

## Output

A confirmation that $5 USDC has been credited to the Ned Watch account associated with the provided Bearer API key, enabling continued operation of AI agent monitoring watches (deadman, overrun, HTTP, content, TLS) billed at 1–7 cents per watch per day.

## 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": {}
    },
    "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"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ned-watch-5-balance-top-up-226c7fa7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.ned.watch](https://www.zero.xyz/host/api.ned.watch/llms.txt)