AI agents call get_spaces to retrieve information from Capacities MCP Bridge (Unofficial) without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about spaces (likely user workspaces or note collections) in Capacities.io. It performs a read-only operation with no side effects, matching the 'Read' category. The low severity reflects minimal blast radius—retrieving space metadata poses minimal risk even if misused by an AI agent.
From the tool's definition Tool name 'get_spaces' with description 'Get your spaces' indicates a retrieval operation that lists or fetches user workspace/note structures with no modification capability.
Documented attack patterns abuse exactly the kind of access get_spaces gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Capacities MCP Bridge (Unofficial), and nothing reaches the server without passing your rules. This is the rule we recommend for get_spaces:
{
"version": "1",
"default": "deny",
"tools": {
"get_spaces": {}
}
}get_spaces is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get your spaces. It is categorised as a Read tool in the Capacities MCP Bridge (Unofficial) MCP Server, which means it retrieves data without modifying state.
Register the Capacities MCP Bridge (Unofficial) MCP server in PolicyLayer and add a rule for get_spaces: 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 Capacities MCP Bridge (Unofficial). Nothing to install.
get_spaces 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 get_spaces 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 get_spaces. 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.
get_spaces is provided by the Capacities MCP Bridge (Unofficial) MCP server (natkitten/capacities-mcp-bridge-unofficial). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Capacities MCP Bridge (Unofficial), add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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5 Capacities MCP Bridge (Unofficial) tools catalogued and risk-classified — across an index of 43,000+ MCP servers.