cityCode

number

SERVERBaidu Map SOURCE@baidumap/mcp-server-baidu-map

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade C, identity unverified Pull the record →

This record as markdown: /tools/baidu-map/citycode.md

WHAT IT DOES

What cityCode does on Baidu Map

AI agents call cityCode as a supporting operation in Baidu Map workflows.

RISK

Why cityCode is rated Low

The description 'number' is essentially uninformative. Based on the tool name 'cityCode' and the context of a Baidu Map API server, this likely retrieves a city code (a numeric identifier), which would be a Read operation. However, with such a vague description, confidence is very low. Classifying as Other due to insufficient information, though Read is the most probable actual category.

From the tool's definition Tool name is 'cityCode' and description is just 'number' — uninformative single word that provides no actionable detail about side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cityCode safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Baidu Map, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cityCode, this is the rule to start with:

cityCode Rate-limited

cityCode gets a rate cap, and everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cityCode": {
      "limits": [
        {
          "counter": "citycode_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Baidu Map, apply this rule, and every cityCode call is checked against it from then on.

FAQ

Questions about cityCode

What does the cityCode tool do? +

number. It is categorised as a Other tool in the Baidu Map MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on cityCode? +

Register the Baidu Map MCP server in PolicyLayer and add a rule for cityCode: 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 Baidu Map. Nothing to install.

What risk level is cityCode? +

cityCode is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit cityCode? +

Yes. Add a rate_limit block to the cityCode 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 cityCode completely? +

Set action: deny in the PolicyLayer policy for cityCode. 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 cityCode? +

cityCode is provided by the Baidu Map MCP server (@baidumap/mcp-server-baidu-map). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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