Search tiddlers using filter syntax, semantic similarity, or both. Supports filter-based queries (e.g., by tag, date, title), semantic/conceptual search, and hybrid combinations. Returns matching tiddlers with metadata and optionally text content.
AI agents call search_tiddlers to retrieve information from TiddlyWiki MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs information retrieval only. It searches and returns tiddler metadata and optionally text content using filter syntax or semantic similarity, but does not create, modify, delete, or execute arbitrary operations. The read-only nature is evident from the verb 'search' and the description's focus on 'returns matching tiddlers' without any mention of state changes.
From the tool's definition Tool description explicitly states 'Search tiddlers' and 'Returns matching tiddlers' — this is a query/retrieval operation with no modification, creation, or deletion.
Attacks that exploit this kind of access
Search tiddlers using filter syntax, semantic similarity, or both. Supports filter-based queries (e.g., by tag, date, title), semantic/conceptual search, and hybrid combinations. Returns matching tiddlers with metadata and optionally text content. It is categorised as a Read tool in the TiddlyWiki MCP Server MCP Server, which means it retrieves data without modifying state.
Register the TiddlyWiki MCP Server MCP server in PolicyLayer and add a rule for search_tiddlers: 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 TiddlyWiki MCP Server. Nothing to install.
search_tiddlers 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_tiddlers 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_tiddlers. 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_tiddlers is provided by the TiddlyWiki MCP Server MCP server (ppetru/tiddlywiki-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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