List all pending async tasks
AI agents call async_list_pending_tasks to retrieve information from MCP Async Bridge Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and lists pending tasks without modifying, deleting, or executing anything. It is purely informational—a read operation that provides visibility into the state of async tasks. The blast radius is minimal since it only exposes task metadata without acting upon the system.
From the tool's definition The tool 'async_list_pending_tasks' with description 'List all pending async tasks' performs a retrieval operation without side effects.
Attacks that exploit this kind of access
List all pending async tasks. It is categorised as a Read tool in the MCP Async Bridge Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Async Bridge Server MCP server in PolicyLayer and add a rule for async_list_pending_tasks: 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 MCP Async Bridge Server. Nothing to install.
async_list_pending_tasks 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 async_list_pending_tasks 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 async_list_pending_tasks. 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.
async_list_pending_tasks is provided by the MCP Async Bridge Server MCP server (mako10k/mcp-async). 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.
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