Check the mSOL token balance of the environment wallet or any specified Solana wallet address.
AI agents call get_msol_balance to retrieve information from Marinade Finance MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries the balance of a token without side effects. It performs a read operation on blockchain state, returning information about mSOL holdings. The blast radius of misuse is minimal—an attacker could only discover wallet balances, not manipulate funds or execute transactions. This is a pure data retrieval operation.
From the tool's definition Tool name 'get_msol_balance' and description explicitly states it 'Check[s] the mSOL token balance' with no modification, deletion, or execution of operations. It retrieves data only.
Attacks that exploit this kind of access
Check the mSOL token balance of the environment wallet or any specified Solana wallet address. It is categorised as a Read tool in the Marinade Finance MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Marinade Finance MCP Server MCP server in PolicyLayer and add a rule for get_msol_balance: 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 Marinade Finance MCP Server. Nothing to install.
get_msol_balance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_msol_balance 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.
Set action: deny in the PolicyLayer policy for get_msol_balance. 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.
get_msol_balance is provided by the Marinade Finance MCP Server MCP server (leandrogavidia/marinade-finance-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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