findOneMessageParticipant

depth can be provided to request your messageParticipant

SERVERTwenty MCP Server SOURCEjdu278/twenty-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/jdu278-twenty-mcp-server/findonemessageparticipant.md

WHAT IT DOES

What findOneMessageParticipant does on Twenty MCP Server

AI agents call findOneMessageParticipant to retrieve information from Twenty MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why findOneMessageParticipant is rated Low

This tool retrieves or queries a single messageParticipant record with optional depth parameter for related data. It has no side effects and falls squarely into the Read category. The low severity reflects minimal blast radius—querying CRM message participant data poses limited risk even if misused by an agent.

From the tool's definition Tool name contains 'find' and description uses 'request', indicating retrieval of a messageParticipant object. No modification, deletion, or execution keywords present.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs findOneMessageParticipant safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Twenty MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For findOneMessageParticipant, this is the rule to start with:

findOneMessageParticipant Allowed

findOneMessageParticipant is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "findOneMessageParticipant": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Twenty MCP Server, apply this rule, and every findOneMessageParticipant call is checked against it from then on.

FAQ

Questions about findOneMessageParticipant

What does the findOneMessageParticipant tool do? +

depth can be provided to request your messageParticipant. It is categorised as a Read tool in the Twenty MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on findOneMessageParticipant? +

Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for findOneMessageParticipant: 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.

What risk level is findOneMessageParticipant? +

findOneMessageParticipant is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit findOneMessageParticipant? +

Yes. Add a rate_limit block to the findOneMessageParticipant 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.

How do I block findOneMessageParticipant completely? +

Set action: deny in the PolicyLayer policy for findOneMessageParticipant. 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.

What MCP server provides findOneMessageParticipant? +

findOneMessageParticipant 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.

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