check_address_type
AI agents call check_address_type to retrieve information from Token Info MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to classify or identify an Ethereum address type (contract vs EOA, proxy vs implementation, etc.) without modifying state. It fits the Read category as a lookup/detection function. Confidence is moderate (0.85) due to empty description; if the tool actually executes arbitrary operations, severity could increase, but context strongly suggests passive inspection.
From the tool's definition Tool name 'check_address_type' suggests a query/inspection function. Server context indicates 'smart contract analysis' and 'detection' of contract types. Sibling tools 'get_contract_roles' and 'get_proxy_admin' are clearly read operations.
Attacks that exploit this kind of access
check_address_type. It is categorised as a Read tool in the Token Info MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Token Info MCP Server MCP server in PolicyLayer and add a rule for check_address_type: 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 Token Info MCP Server. Nothing to install.
check_address_type 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 check_address_type 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 check_address_type. 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.
check_address_type is provided by the Token Info MCP Server MCP server (0xwuchuan/token-info-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
check_address_type is one line of Token Info MCP Server'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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