AI agents call get_balance to retrieve information from Solblade without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries wallet balance information without side effects. It is a read-only operation that retrieves existing data. Although it accesses financial information (SOL balance), it does not move money, execute transactions, or modify state, so it does not qualify for the Financial category.
From the tool's definition Tool name 'get_balance' and description 'Get SOL balance for a wallet by label or pubkey' indicate a pure retrieval operation with no data modification, deletion, or financial transaction execution.
Attacks that exploit this kind of access
Get SOL balance for a wallet by label or pubkey. It is categorised as a Read tool in the Solblade MCP Server, which means it retrieves data without modifying state.
Register the Solblade MCP server in PolicyLayer and add a rule for get_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 Solblade. Nothing to install.
get_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_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_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_balance is provided by the Solblade MCP server (nullxnothing/solblade). 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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