fetch_batch
AI agents call fetch_batch to retrieve information from Free Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves or queries data in batch. Sibling tools and server description confirm this is a read-only operation. No modification, deletion, execution, or financial impact is possible. Low severity because fetching multiple documents is a standard retrieval operation with no destructive potential.
From the tool's definition Tool name 'fetch_batch' and sibling tools 'fetch', 'research', 'search', 'extract_structured' indicate data retrieval operations.
Attacks that exploit this kind of access
fetch_batch. It is categorised as a Read tool in the Free Search MCP Server, which means it retrieves data without modifying state.
Register the Free Search MCP server in PolicyLayer and add a rule for fetch_batch: 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 Free Search. Nothing to install.
fetch_batch 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 fetch_batch 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 fetch_batch. 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.
fetch_batch is provided by the Free Search MCP server (sweetcornna/free-search-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.
Teams ship this data inside their own products. See what a licence covers →