# Ledgerbell Pro API Key Provisioning

> Ledgerbell Pro API Key Provisioning is a paid API for AI agents from ledgerbell.quietworklabs.workers.dev, paid per call via x402, $1/call, status unknown (last checked 2026-10-18).

Issues or renews a Ledgerbell Pro API key (lb_ key) that unlocks paid onchain alert subscriptions for wallets, Safe multisigs, and contracts across EVM chains.

## Facts

- Endpoint: GET https://ledgerbell.quietworklabs.workers.dev/x402/pro-6d?utm_source=zero.xyz
- Price: $1/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-provisioning-120715ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_aQh_mTmFKI5p18AUnCHci

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-provisioning-120715ac
```

Example prompt: Get me a new Ledgerbell Pro API key so I can start setting up onchain alerts for my Ethereum wallet on Discord — I don't have an existing key.

## When to prefer this

Use this endpoint when you need to obtain or extend a Ledgerbell Pro API key to enable paid-tier onchain monitoring features. It is the required first step before calling /api/watch to register specific wallet, Safe, or contract alert subscriptions. Choose this over the free tier when you need higher alert volume or advanced event types.

## Known failure modes

- Payment not received or x402 flow incomplete — key not issued
- Supplied existing lb_ key not recognized — error or new key issued instead
- Downstream worker timeout — no response
- Rate limiting or quota exceeded on free tier

## 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 the lb_ API key string, a hint for the next API call (POST /api/watch with x-api-key header), the plan name ('pro'), and a Unix timestamp (pro_until) indicating when the Pro subscription expires.

## 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-provisioning-120715ac/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)