Returns the Canton Coin (CIP-56) balance for the participant's
AI agents call canton_coin_balance to retrieve information from Tenzro Ledger MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a data retrieval operation (balance check) with no side effects. It does not create, modify, delete, or execute any operations. The singular 'Returns' verb confirms it is a read operation. Given the financial context of a ledger/wallet system, the data retrieved is sensitive, but the tool itself poses no immediate financial risk as it neither moves money nor creates obligations.
From the tool's definition Tool name 'canton_coin_balance' and description 'Returns the Canton Coin (CIP-56) balance for the participant's' indicate a read-only query operation that retrieves balance information without modifying state.
Attacks that exploit this kind of access
Returns the Canton Coin (CIP-56) balance for the participant's. It is categorised as a Read tool in the Tenzro Ledger MCP MCP Server, which means it retrieves data without modifying state.
Register the Tenzro Ledger MCP server in PolicyLayer and add a rule for canton_coin_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 Tenzro Ledger MCP. Nothing to install.
canton_coin_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 canton_coin_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 canton_coin_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.
canton_coin_balance is provided by the Tenzro Ledger MCP server (https://canton-mcp.tenzro.network/mcp). 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.
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