Search for members by name. Use this to find Trello users by their name or username.
AI agents call search_members to retrieve information from Trello without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves information about Trello members based on name or username queries. It has no side effects, cannot modify data, and poses minimal risk if misused by an AI agent—at worst, it returns user information that may already be publicly discoverable on the Trello workspace.
From the tool's definition The tool 'search_members' description states it will 'Search for members by name' and 'find Trello users by their name or username.' This is purely a search/lookup operation with no mutation of data.
Documented attack patterns abuse exactly the kind of access search_members gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Trello, and nothing reaches the server without passing your rules. This is the rule we recommend for search_members:
{
"version": "1",
"default": "deny",
"tools": {
"search_members": {}
}
}search_members is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for members by name. Use this to find Trello users by their name or username. It is categorised as a Read tool in the Trello MCP Server, which means it retrieves data without modifying state.
Register the Trello MCP server in PolicyLayer and add a rule for search_members: 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 Trello. Nothing to install.
search_members 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 search_members 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 search_members. 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.
search_members is provided by the Trello MCP server (v4lheru/trello-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Trello, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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76 Trello tools catalogued and risk-classified — across an index of 43,000+ MCP servers.