# Solana Durable Nonce Account Lookup

> Solana Durable Nonce Account Lookup is a paid API for AI agents from mintintel.35-171-220-195.sslip.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Returns decoded durable nonce account data for a Solana address, including the stored nonce value, nonce authority, fee per signature, and account balance.

## Facts

- Endpoint: GET https://mintintel.35-171-220-195.sslip.io/v1/sol/nonce/:addr?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solana-durable-nonce-account-lookup-743a3136
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rEeomcHv09u_FLaQKlzmt

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 solana-durable-nonce-account-lookup-743a3136
```

Example prompt: Can you look up the durable nonce account details for this Solana address 3Nxwenxyz1234abcSolanaAddr — I need the stored nonce value to use as a recentBlockhash for an offline transaction I'm preparing.

## When to prefer this

Use this endpoint when you need to prepare offline or delayed Solana transactions that require a durable nonce as a substitute for recentBlockhash, or when you need to inspect nonce account authority and fee details. Prefer this over general-purpose RPC calls when you want a decoded, structured response without parsing raw account data yourself.

## Known failure modes

- 404 returned if the address exists but is not a durable nonce account — no charge incurred
- Invalid or malformed base58 address returns an error
- Account not found on-chain returns an appropriate error
- Network or RPC timeout may cause transient failures

## How this service works

Decoded Solana durable nonce account: the stored nonce (use it as recentBlockhash for offline or delayed signing), nonce authority, fee per signature and balance, via getAccountInfo jsonParsed. Not a nonce account -> 404, not charged.

## Output

Returns the decoded durable nonce account fields: the nonce account address, the stored nonce string (usable as recentBlockhash for offline or delayed signing), the nonce authority public key, the fee per signature in lamports, and the account balance. Returns 404 if the address is not a nonce account, with no charge.

## 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"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "addr"
     ],
     "properties": {
      "addr": {
       "type": "string",
       "description": "base58 Solana address"
      }
     },
     "additionalProperties": false
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "address",
      "durableNonce",
      "authority"
     ],
     "properties": {
      "address": {
       "type": "string"
      },
      "authority": {
       "type": "string"
      },
      "durableNonce": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solana-durable-nonce-account-lookup-743a3136/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mintintel.35-171-220-195.sslip.io](https://www.zero.xyz/host/mintintel.35-171-220-195.sslip.io/llms.txt)