AI agents call board_list_comments to retrieve information from Agent Board without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing comment data associated with a task. It performs no creation, modification, deletion, or execution operations. The action is read-only and returns information without altering any state.
From the tool's definition Tool name 'board_list_comments' and description 'List all comments for a task' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access board_list_comments gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Agent Board, and nothing reaches the server without passing your rules. This is the rule we recommend for board_list_comments:
{
"version": "1",
"default": "deny",
"tools": {
"board_list_comments": {}
}
}board_list_comments is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all comments for a task. It is categorised as a Read tool in the Agent Board MCP Server, which means it retrieves data without modifying state.
Register the Agent Board MCP server in PolicyLayer and add a rule for board_list_comments: 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 Agent Board. Nothing to install.
board_list_comments 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 board_list_comments 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 board_list_comments. 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.
board_list_comments is provided by the Agent Board MCP server (quentintou/agent-board). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Agent Board, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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14 Agent Board tools catalogued and risk-classified — across an index of 43,000+ MCP servers.