AI agents call yapi_list_interfaces to retrieve information from Mcp Yapi without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists existing API interface documentation from YApi without creating, modifying, executing, or deleting data. It is a pure query operation with no side effects.
From the tool's definition Tool name 'yapi_list_interfaces' and description '获取YApi项目或分类下的接口列表' (Get interface list under YApi project or category) indicate retrieval/querying of API documentation data with no modification or execution.
Attacks that exploit this kind of access
获取YApi项目或分类下的接口列表. It is categorised as a Read tool in the Mcp Yapi MCP Server, which means it retrieves data without modifying state.
Register the Mcp Yapi MCP server in PolicyLayer and add a rule for yapi_list_interfaces: 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 Mcp Yapi. Nothing to install.
yapi_list_interfaces 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 yapi_list_interfaces 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 yapi_list_interfaces. 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.
yapi_list_interfaces is provided by the Mcp Yapi MCP server (tstonelee/mcp-yapi-server). 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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