# Base Next Transaction Nonce

> Base Next Transaction Nonce is a paid API for AI agents from appearing-clinics-show-wrote.trycloudflare.com, paid per call via x402, price unknown, status down (last checked 2026-09-15).

Returns the exact next transaction nonce for a Base network address from a single bounded read-only RPC call.

## Facts

- Endpoint: GET https://appearing-clinics-show-wrote.trycloudflare.com/base-nonce-sample
- Price: price unknown
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-next-transaction-nonce-ead995e8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IYWwJdnM4FK-wQxWoxAp6

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 base-next-transaction-nonce-ead995e8
```

Example prompt: What's the next transaction nonce I should use for my Base wallet right now? I need the exact value before I sign and send my next transaction.

## When to prefer this

Choose this endpoint when you need a fast, precise next-nonce value for Base network transactions with minimal RPC overhead. Ideal for transaction signing pipelines, DeFi bots, or any agent that must avoid nonce collisions on Base. Prefer over self-hosted RPC when you want a paid, bounded, reliable single-call guarantee rather than managing your own node infrastructure.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- RPC node unavailable or rate-limited causes a failed response
- Network timeout if Base RPC endpoint is unreachable
- Free sample endpoint may return a fixed demo nonce rather than a live address-specific nonce

## How this service works

Free Base nonce sample for the service receiver. The paid $0.0026 API returns the exact next transaction nonce from one bounded read-only RPC call.

## Output

Returns the exact integer nonce value representing the next valid transaction sequence number for the queried Base network address, derived from a single bounded read-only RPC call.

## 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": [],
     "properties": {}
    }
   },
   "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/base-next-transaction-nonce-ead995e8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from appearing-clinics-show-wrote.trycloudflare.com](https://www.zero.xyz/host/appearing-clinics-show-wrote.trycloudflare.com/llms.txt)