prepare_solana_nonce_init

SERVERVaultPilot MCP SOURCEvaultpilot-mcp

High RISK CLASS

Category Execute

Parameters 11 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-szhygulin-vaultpilot-mcp/prepare-solana-nonce-init.md

WHAT IT DOES

What prepare_solana_nonce_init does on VaultPilot MCP

AI agents invoke prepare_solana_nonce_init to trigger actions in VaultPilot MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

Parameter	Type	Required	Description
`wallet`	string	Yes	Solana wallet that will own (and authorize) the durable-nonce account. The nonce account address is derived deterministically via PublicKey.createWithSeed(walle

Parameters from the server's own tool schema.

RISK

Why prepare_solana_nonce_init is rated High

This tool triggers an on-chain operation that initializes a durable-nonce account on Solana, consuming SOL for rent-exemption. It is an Execute-class action because it runs an external blockchain transaction with real effects (account creation, SOL expenditure).

From the tool's definition 'Explicit one-time setup of a per-wallet durable-nonce account', 'Costs ~0.00144 SOL rent-exempt seed + ~0.000005 SOL'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs prepare_solana_nonce_init safely

PolicyLayer is an MCP gateway: it sits between your AI agents and VaultPilot MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For prepare_solana_nonce_init, this is the rule to start with:

prepare_solana_nonce_init Rate-limited

prepare_solana_nonce_init stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "prepare_solana_nonce_init": {
      "limits": [
        {
          "counter": "prepare_solana_nonce_init_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect VaultPilot MCP, apply this rule, and every prepare_solana_nonce_init call is checked against it from then on.

FAQ

Questions about prepare_solana_nonce_init

What does the prepare_solana_nonce_init tool do? +

Explicit one-time setup of a per-wallet durable-nonce account at the deterministic PDA PublicKey.createWithSeed(wallet, 'vaultpilot-nonce-v1', SystemProgram.programId). MOST USERS DO NOT NEED TO CALL THIS DIRECTLY — prepare_solana_native_send / prepare_solana_spl_send auto-bundle the same setup into the user's first send. Use this tool when the user wants the setup standalone (e.g. before a Jupiter swap or MarginFi action, which can't safely auto-bundle due to size + ALT constraints), or to re-init after a prepare_solana_nonce_close. Costs ~0.00144 SOL rent-exempt seed + ~0.000005 SOL tx fee; the rent is fully reclaimable via prepare_solana_nonce_close. Refuses if a nonce account already exists at the derived PDA. This init tx uses a regular recent blockhash (no nonce to use yet — same constraint that makes auto-bundling possible inside native/SPL sends). It is categorised as a Execute tool in the VaultPilot MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

What parameters does prepare_solana_nonce_init accept? +

prepare_solana_nonce_init accepts 1 parameter: wallet. Required: wallet. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on prepare_solana_nonce_init? +

Register the VaultPilot MCP server in PolicyLayer and add a rule for prepare_solana_nonce_init: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches VaultPilot MCP. Nothing to install.

What risk level is prepare_solana_nonce_init? +

prepare_solana_nonce_init is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit prepare_solana_nonce_init? +

Yes. Add a rate_limit block to the prepare_solana_nonce_init rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block prepare_solana_nonce_init completely? +

Set action: deny in the PolicyLayer policy for prepare_solana_nonce_init. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides prepare_solana_nonce_init? +

prepare_solana_nonce_init is provided by the VaultPilot MCP server (vaultpilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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