list_copilot_spaces
Retrieves the list of Copilot Spaces accessible to the user, including their names and owners.
This record as markdown: /tools/github/list-copilot-spaces.md
What list_copilot_spaces does on GitHub
AI agents call list_copilot_spaces to retrieve information from GitHub without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_copilot_spaces is rated Low
This tool queries and returns information about Copilot Spaces without modifying, creating, or deleting any data. It has no side effects and falls squarely within the Read category. The severity is low because accessing a list of available spaces poses minimal risk, though care should be taken to ensure the user has legitimate access to view the spaces they can access.
From the tool's definition The tool 'list_copilot_spaces' explicitly 'Retrieves the list of Copilot Spaces accessible to the user, including their names and owners.' The verb 'retrieves' and the lack of any modification, creation, or deletion of data indicates a read-only operation.
Attacks that exploit this kind of access
The rule that runs list_copilot_spaces safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GitHub, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_copilot_spaces, this is the rule to start with:
list_copilot_spaces is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect GitHub, apply this rule, and every list_copilot_spaces call is checked against it from then on.
Questions about list_copilot_spaces
Retrieves the list of Copilot Spaces accessible to the user, including their names and owners. It is categorised as a Read tool in the GitHub MCP Server, which means it retrieves data without modifying state.
Register the GitHub MCP server in PolicyLayer and add a rule for list_copilot_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 GitHub. Nothing to install.
list_copilot_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 list_copilot_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 list_copilot_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.
list_copilot_spaces is provided by the GitHub MCP server (oci:ghcr.io/github/github-mcp-server:1.3.0). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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