AI agents call segment_list_sources to retrieve information from UnClick without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
api_key | string | Yes | Segment Public API token |
workspace_id | string | Yes | Segment workspace ID |
Parameters from the server's own tool schema.
This tool queries and retrieves Segment data sources from a workspace. It performs a read-only API call to enumerate existing sources, returning information only. There are no side effects, data modification, deletion, code execution, or financial implications.
From the tool's definition Tool name contains 'list' and description states 'List all Segment sources' — a retrieval operation with no modification capability.
Risk signalsHandles credentials or secrets (api_key)
Attacks that exploit this kind of access
List all Segment sources in a workspace using the Segment Public API. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
segment_list_sources accepts 2 parameters: api_key, workspace_id. Required: api_key, workspace_id. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for segment_list_sources: 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 UnClick. Nothing to install.
segment_list_sources 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 segment_list_sources 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 segment_list_sources. 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.
segment_list_sources is provided by the UnClick MCP server (@unclick/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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