needle_list_collections
AI agents call needle_list_collections to retrieve information from Needle MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'list' action retrieves collection metadata without modifying state. No description was provided, but the naming pattern and context of sibling tools strongly indicate this is a non-destructive query operation. Listing collections has minimal blast radius if misused by an agent.
From the tool's definition Tool name 'needle_list_collections' indicates a listing operation. Sibling tools include 'needle_list_files' and 'needle_get_collection_details', which are clearly read operations.
Attacks that exploit this kind of access
needle_list_collections. It is categorised as a Read tool in the Needle MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Needle MCP Server MCP server in PolicyLayer and add a rule for needle_list_collections: 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 Needle MCP Server. Nothing to install.
needle_list_collections 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 needle_list_collections 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 needle_list_collections. 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.
needle_list_collections is provided by the Needle MCP Server MCP server (needle-ai/needle-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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