search_by_tag
AI agents call search_by_tag to retrieve information from WikiJS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Search operations retrieve and query data without modification or side effects. Even though the tool description is empty, the name 'search_by_tag' unambiguously indicates a read operation, and the context of other read-only tools on the same server reinforces this classification.
From the tool's definition Tool name 'search_by_tag' indicates a search operation, which is a read-only query function. The server description confirms it supports 'searching' as a non-destructive operation.
Attacks that exploit this kind of access
search_by_tag. It is categorised as a Read tool in the WikiJS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the WikiJS MCP Server MCP server in PolicyLayer and add a rule for search_by_tag: 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 WikiJS MCP Server. Nothing to install.
search_by_tag 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 search_by_tag 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 search_by_tag. 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.
search_by_tag is provided by the WikiJS MCP Server MCP server (vnikhilbuddhavarapu/wiki-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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