List all user segments. Segments group users by shared behaviours or attributes and can be referenced in rules and campaigns.
AI agents call list_segments to retrieve information from NeuronSearchLab without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about user segments without creating, modifying, deleting, or executing any operations. It has no side effects and presents minimal security risk—the worst outcome of misuse would be unauthorized access to segment definitions, which is a confidentiality concern rather than integrity or availability.
From the tool's definition Tool name 'list_segments' combined with description 'List all user segments' indicates a retrieval operation. The verb 'list' is explicitly a read operation that queries existing segment data without modification.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
List all user segments. Segments group users by shared behaviours or attributes and can be referenced in rules and campaigns. It is categorised as a Read tool in the NeuronSearchLab MCP Server, which means it retrieves data without modifying state.
Register the NeuronSearchLab MCP server in PolicyLayer and add a rule for list_segments: 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 NeuronSearchLab. Nothing to install.
list_segments 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 list_segments 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 list_segments. 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.
list_segments is provided by the NeuronSearchLab MCP server (neuronsearchlab/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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