Retrieve Spaces created by specific users.
AI agents call getSpacesByCreatorIds to retrieve information from Xdevplatform/xmcp 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 Spaces filtered by creator IDs. It is a read-only operation that queries existing data without creating, modifying, deleting, or executing external actions. The blast radius of misuse is minimal: an attacker might enumerate Spaces belonging to specific users, but cannot alter state or access sensitive content beyond what the query exposes.
From the tool's definition Tool description states 'Retrieve Spaces created by specific users' — a query operation with no modification or side effects.
Attacks that exploit this kind of access
Retrieve Spaces created by specific users. It is categorised as a Read tool in the Xdevplatform/xmcp MCP Server, which means it retrieves data without modifying state.
Register the Xdevplatform/x MCP server in PolicyLayer and add a rule for getSpacesByCreatorIds: 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 Xdevplatform/xmcp. Nothing to install.
getSpacesByCreatorIds 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 getSpacesByCreatorIds 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 getSpacesByCreatorIds. 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.
getSpacesByCreatorIds is provided by the Xdevplatform/x MCP server (xdevplatform/xmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
getSpacesByCreatorIds is one line of Xdevplatform/x's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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