Read the ERC-7943 frozen-amount for a (token, account) pair.
AI agents call urwa_get_frozen_tokens 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 queries blockchain state (ERC-7943 frozen token amounts) for a given token and account. It performs no state modification, deletion, code execution, or financial transaction. It is purely informational retrieval, fitting the 'Read' category with low severity since misuse would only expose information already on-chain.
From the tool's definition Tool name and description indicate a retrieval operation: 'Read the ERC-7943 frozen-amount for a (token, account) pair.' The verb 'read' and the absence of any modification, deletion, or execution language confirm this is a query operation with no side…
Attacks that exploit this kind of access
Read the ERC-7943 frozen-amount for a (token, account) pair. 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 urwa_get_frozen_tokens: 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.
urwa_get_frozen_tokens 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 urwa_get_frozen_tokens 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 urwa_get_frozen_tokens. 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.
urwa_get_frozen_tokens 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.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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