yapi-update-interface · YAPI MCP Server MCP: Risk & Policy

WHAT IT DOES

What yapi-update-interface does on YAPI MCP Server

AI agents use yapi-update-interface to create or update resources in YAPI MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your YAPI MCP Server environment.

WHY IT NEEDS A POLICY

Why yapi-update-interface needs a policy

This tool creates or modifies API interface data reversibly. It falls under Write category as it updates interface configurations without permanently deleting data. Severity is medium because misconfiguration of API interfaces could impact API consumers and integrations, but changes are reversible through subsequent updates.

From the tool's definition Tool name contains 'update' and description states '修改 YAPI 接口' (modify YAPI interface), indicating it modifies existing API interface documentation/definitions.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

yapi-update-interface Rate-limited

yapi-update-interface stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "yapi-update-interface": {
      "limits": [
        {
          "counter": "yapi-update-interface_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches YAPI MCP Server, so you can run agents against it safely.

FAQ

Questions about yapi-update-interface

What does the yapi-update-interface tool do? +

修改 YAPI 接口. It is categorised as a Write tool in the YAPI MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on yapi-update-interface? +

Register the YAPI MCP Server MCP server in PolicyLayer and add a rule for yapi-update-interface: 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 YAPI MCP Server. Nothing to install.

What risk level is yapi-update-interface? +

yapi-update-interface is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit yapi-update-interface? +

Yes. Add a rate_limit block to the yapi-update-interface 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.

How do I block yapi-update-interface completely? +

Set action: deny in the PolicyLayer policy for yapi-update-interface. 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.

What MCP server provides yapi-update-interface? +

yapi-update-interface is provided by the YAPI MCP Server MCP server (w-abel-jia/yapi-interface-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.