depth can be provided to request your messageThread
AI agents call findMessageThreadDuplicates to retrieve information from Twenty MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or queries data about message thread duplicates without creating, modifying, or deleting any data. It has no side effects and falls squarely into the Read category. Severity is low as the worst outcome would be exposing existing CRM data that an AI agent already has access to.
From the tool's definition The tool name 'findMessageThreadDuplicates' indicates it searches for and retrieves duplicate message threads.
Documented attack patterns abuse exactly the kind of access findMessageThreadDuplicates gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twenty MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for findMessageThreadDuplicates:
{
"version": "1",
"default": "deny",
"tools": {
"findMessageThreadDuplicates": {}
}
}findMessageThreadDuplicates is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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depth can be provided to request your messageThread. It is categorised as a Read tool in the Twenty MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for findMessageThreadDuplicates: 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 Twenty MCP Server. Nothing to install.
findMessageThreadDuplicates 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 findMessageThreadDuplicates 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 findMessageThreadDuplicates. 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.
findMessageThreadDuplicates is provided by the Twenty MCP Server MCP server (jdu278/twenty-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Twenty MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
219 Twenty MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.