List collaborators on a repo with their permission level.
AI agents call list_repo_collaborators to retrieve information from Ghe Mcp Gateway without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates existing data (collaborator identities and their permission levels) without creating, modifying, deleting, or executing any operations. It is a straightforward read query with minimal blast radius even if misused by an agent—the worst outcome would be unauthorized inspection of team membership, which is a confidentiality concern but not destructive or operational.
From the tool's definition Tool name contains 'list' and description states 'List collaborators on a repo with their permission level' — purely a data retrieval operation with no modification or execution capability.
Attacks that exploit this kind of access
List collaborators on a repo with their permission level. It is categorised as a Read tool in the Ghe Mcp Gateway MCP Server, which means it retrieves data without modifying state.
Register the Ghe Mcp Gateway MCP server in PolicyLayer and add a rule for list_repo_collaborators: 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 Ghe Mcp Gateway. Nothing to install.
list_repo_collaborators 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_repo_collaborators 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_repo_collaborators. 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_repo_collaborators is provided by the Ghe Mcp Gateway MCP server (mholzinger/ghe-mcp-gateway). 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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