# Base Nonce Readiness Checker

> Base Nonce Readiness Checker is a paid API for AI agents from nohands-coinbase-bazaar.bytoken2023.workers.dev, paid per call via x402, $0.003004/call, status unknown (last checked 2026-11-02).

Compares confirmed and pending Base blockchain nonces to determine if an autonomous agent's wallet is ready to sign and submit a new transaction safely.

## Facts

- Endpoint: GET https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/base/nonce-readiness?utm_source=zero.xyz
- Price: $0.003004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-nonce-readiness-checker-e16094e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lVam3luppjZ7OAzsO_lYk

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-nonce-readiness-checker-e16094e2
```

Example prompt: Before you sign and submit the next payment transaction, check if my Base wallet 0xAbc123... has any nonce conflicts — compare the confirmed and pending nonces and tell me if it's safe to proceed.

## When to prefer this

Use this endpoint immediately before an autonomous agent signs any Base transaction, especially in x402 payment flows or multi-step agent workflows where nonce collisions or stuck pending transactions could cause failures. Prefer this over reading raw RPC nonce values yourself when you need a simple pass/fail readiness verdict rather than raw chain data.

## Known failure modes

- Invalid or malformed Base wallet address returns an error response
- RPC connectivity issues to Base network result in timeout or unavailable status
- Address with no transaction history may return edge-case nonce values requiring agent interpretation
- Rapidly changing chain state may cause stale nonce snapshot between check and actual submission

## How this service works

Compare confirmed and pending Base nonces before an autonomous transaction is signed.

## Output

Returns the current confirmed nonce, pending nonce, and a readiness verdict indicating whether it is safe for an autonomous agent to sign and submit a new transaction — including any detected nonce gap or conflict that could cause the transaction to be rejected or queue behind a stuck pending transaction.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "example": "0x94F751f04b98507D31b500b7Ed50bE68A1514873",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "Base account whose transaction nonce should be checked."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ready": {
       "type": "boolean"
      },
      "address": {
       "type": "string"
      },
      "network": {
       "type": "string"
      },
      "product": {
       "type": "string"
      },
      "fetched_at": {
       "type": "string"
      },
      "provenance": {
       "type": "object",
       "properties": {
        "rpc_providers": {
         "type": "array",
         "items": {
          "type": "string"
         }
        },
        "pending_block_tag": {
         "type": "string"
        },
        "confirmed_block_tag": {
         "type": "string"
        }
       },
       "additionalProperties": true
      },
      "decision_hint": {
       "type": "string"
      },
      "pending_nonce": {
       "type": "string"
      },
      "schema_version": {
       "type": "string"
      },
      "confirmed_nonce": {
       "type": "string"
      },
      "pending_transaction_count": {
       "type": "string"
      }
     },
     "x-schema-family": "OPERATION_RUNTIME_RESULT",
     "x-schema-authority": "REPRESENTATIVE_RUNTIME_FIXTURE",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-nonce-readiness-checker-e16094e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nohands-coinbase-bazaar.bytoken2023.workers.dev](https://www.zero.xyz/host/nohands-coinbase-bazaar.bytoken2023.workers.dev/llms.txt)