AI agents call imageSearchText 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 is a search/query operation that returns matching images based on text input. It has no side effects, does not modify data, does not execute code, and does not delete or create resources. It is purely a read operation with minimal blast radius if misused by an AI agent—worst case being retrieval of unintended images from an existing dataset.
From the tool's definition The tool 'imageSearchText' performs text-based image retrieval from a dataset ('从数据集中检索出与输入的文本内容相符的图片'). The verb 'retrieves/检索' indicates a read operation that queries data without modification, creation, or execution of arbitrary operations.
Documented attack patterns abuse exactly the kind of access imageSearchText 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 imageSearchText:
{
"version": "1",
"default": "deny",
"tools": {
"imageSearchText": {}
}
}imageSearchText is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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根据输入的文本内容，从数据集中检索出与输入的文本内容相符的图片. 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 imageSearchText: 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.
imageSearchText 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 imageSearchText 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 imageSearchText. 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.
imageSearchText 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.