AI agents call inbox to retrieve information from Teammate without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to query message state rather than modify it. However, confidence is lowered because the description is empty and we cannot directly confirm the function's behavior. The messaging/queue context suggests a Read operation. Severity is low because retrieval operations have minimal blast radius even if misused.
From the tool's definition Tool name is 'inbox' with empty description. Based on context of sibling tools like 'queue_status', 'list_panes', and the overall message-queue pattern, inbox likely retrieves pending messages or tasks without side effects.
Attacks that exploit this kind of access
inbox. It is categorised as a Read tool in the Teammate MCP Server, which means it retrieves data without modifying state.
Register the Teammate MCP server in PolicyLayer and add a rule for inbox: 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 Teammate. Nothing to install.
inbox 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 inbox 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 inbox. 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.
inbox is provided by the Teammate MCP server (jonghklee/teammate-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →