This record as markdown: /tools/baidu-map/adcode.md
What adcode does on Baidu Map
AI agents call adcode to retrieve information from Baidu Map without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why adcode is rated Low
Administrative codes (adcodes) are standard geographic identifiers used in China's Baidu Map API. The tool likely retrieves a numeric administrative division code for a given location. The description 'number' is nearly uninformative, but combined with the context of sibling tools (address, addressComponent, area, city, cityCode) this is almost certainly a read/lookup operation with no side effects.
From the tool's definition Tool name 'adcode' and description 'number' are both uninformative; adcode typically refers to an administrative division code lookup, which is a read operation.
Attacks that exploit this kind of access
The rule that runs adcode 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 adcode, this is the rule to start with:
adcode is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Baidu Map, apply this rule, and every adcode call is checked against it from then on.
Questions about adcode
number. It is categorised as a Read tool in the Baidu Map MCP Server, which means it retrieves data without modifying state.
Register the Baidu Map MCP server in PolicyLayer and add a rule for adcode: 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.
adcode 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 adcode 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 adcode. 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.
adcode 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.
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