Case-insensitive substring search across page titles and page bodies. Returns the top matches with a short snippet around each hit. Slow on first call for large spaces (no index yet). Each hit
AI agents call search_pages to retrieve information from Silverbullet without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves search results from a note space without any side effects. It does not create, modify, delete, or execute operations. The only potential concern is information disclosure (reading page contents), but this is a core Read operation consistent with the note-space's intended read functionality.
From the tool's definition Tool performs 'Case-insensitive substring search across page titles and page bodies' and 'Returns the top matches with a short snippet' — purely retrieval of existing data with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Case-insensitive substring search across page titles and page bodies. Returns the top matches with a short snippet around each hit. Slow on first call for large spaces (no index yet). Each hit. It is categorised as a Read tool in the Silverbullet MCP Server, which means it retrieves data without modifying state.
Register the Silverbullet MCP server in PolicyLayer and add a rule for search_pages: 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 Silverbullet. Nothing to install.
search_pages 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_pages 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_pages. 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_pages is provided by the Silverbullet MCP server (xmatthewx/silverbullet-mcp-server). 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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