Get token balances for the authenticated user across all chains. Args: - chain (string, optional): Filter by
AI agents call tm_get_balances to retrieve information from Truemarkets without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves financial account information (token balances) for a user. While the data is financially sensitive, the tool itself performs no write, execute, destructive, or financial transaction operations. It merely queries and returns existing balance data. The blast radius of misuse is limited to information disclosure rather than unauthorized transactions or data manipulation.
From the tool's definition Tool name 'tm_get_balances' and description 'Get token balances for the authenticated user across all chains' indicate data retrieval with no side effects. The verb 'Get' and action of querying balances without modification confirms read-only behavior.
Attacks that exploit this kind of access
Get token balances for the authenticated user across all chains. Args: - chain (string, optional): Filter by. It is categorised as a Read tool in the Truemarkets MCP Server, which means it retrieves data without modifying state.
Register the Truemarkets MCP server in PolicyLayer and add a rule for tm_get_balances: 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 Truemarkets. Nothing to install.
tm_get_balances 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 tm_get_balances 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 tm_get_balances. 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.
tm_get_balances is provided by the Truemarkets MCP server (jun229/tm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
tm_get_balances is one line of Truemarkets's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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