# Ledgerbell Pro API Key (7-Day)

> Ledgerbell Pro API Key (7-Day) is a paid API for AI agents from ledgerbell.quietworklabs.workers.dev, paid per call via x402, $1.25/call, status unknown (last checked 2026-10-18).

Purchases or extends a 7-day Ledgerbell Pro API key for setting up onchain wallet and contract monitoring alerts via Discord, Slack, Telegram, or ntfy

## Facts

- Endpoint: GET https://ledgerbell.quietworklabs.workers.dev/x402/pro-7d?utm_source=zero.xyz
- Price: $1.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ledgerbell-pro-api-key-7-day-dab95867
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Nz0-GeKJ0EfImAEL5EJW8

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 ledgerbell-pro-api-key-7-day-dab95867
```

Example prompt: Get me a Ledgerbell Pro API key so I can start monitoring my Ethereum wallet and Safe multisig for token approvals, owner changes, and queued transactions — I want alerts sent to my Discord.

## When to prefer this

Choose this endpoint when you need to provision or renew a Ledgerbell Pro API key to monitor EVM wallets, Safe multisigs, or proxy contracts for onchain events (token approvals, owner changes, queued transactions, upgrades) with push alerts to Discord, Slack, Telegram, or ntfy on Base, Ethereum, Arbitrum, or Optimism. Prefer this over generic blockchain indexers when you specifically need real-time notification delivery to messaging platforms without running your own infrastructure.

## Known failure modes

- Payment not received or insufficient USDC — key not issued
- Invalid or expired existing key passed as query param — may fail to extend
- Network/worker error at Cloudflare edge — transient 5xx response
- x402 payment protocol misconfiguration — payment rejected before key generation

## How this service works

Get a Discord, Slack, Telegram or ntfy alert when a wallet approves a token, a Safe changes owners or queues a transaction, or a proxy is upgraded. Base, Ethereum, Arbitrum, Optimism. Free tier, no signup.

## Output

Returns a JSON object containing a new or extended lb_-prefixed API key, the plan name ('pro'), the Unix timestamp when the Pro plan expires (pro_until), and a hint for the next step (POST /api/watch with x-api-key header to configure watchers).

## 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": {
      "key": {
       "type": "string",
       "description": "Optional existing lb_ key to extend; omit to get a new key"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "key": "lb_0123456789abcdef0123456789abcdef01234567",
  "next": "POST /api/watch with header x-api-key",
  "plan": "pro",
  "pro_until": 1794900000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ledgerbell-pro-api-key-7-day-dab95867/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ledgerbell.quietworklabs.workers.dev](https://www.zero.xyz/host/ledgerbell.quietworklabs.workers.dev/llms.txt)