AI agents call describeMediaJob to retrieve information from Tencent Cloud COS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves job status or results from a previously initiated media processing task. It performs a read-only lookup operation against existing data, with no side effects. The input is a jobid and the output is job status/results. There is no creation, modification, deletion, or execution of new operations—only information retrieval. This aligns cleanly with the Read category.
From the tool's definition Tool name 'describeMediaJob' and description '根据 jobid 查询指定的媒体智能封面任务结果' (query media smart cover job results by jobid) indicate a query/retrieval operation. The verb '查询' (query/check) explicitly denotes data retrieval with no modification.
Documented attack patterns abuse exactly the kind of access describeMediaJob gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Tencent Cloud COS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for describeMediaJob:
{
"version": "1",
"default": "deny",
"tools": {
"describeMediaJob": {}
}
}describeMediaJob is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
根据 jobid 查询指定的媒体智能封面任务结果. It is categorised as a Read tool in the Tencent Cloud COS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Tencent Cloud COS MCP Server MCP server in PolicyLayer and add a rule for describeMediaJob: 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 Tencent Cloud COS MCP Server. Nothing to install.
describeMediaJob 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 describeMediaJob 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 describeMediaJob. 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.
describeMediaJob is provided by the Tencent Cloud COS MCP Server MCP server (tencent/cos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 21 Tencent Cloud COS MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
21 Tencent Cloud COS MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.