link_opportunity_to_company

THE RISK

Medium Risk

Why link_opportunity_to_company needs a policy

This tool creates or modifies relationships between existing CRM records (opportunity, company, contact). It is a reversible write operation — the link can be removed or changed — with no destructive, financial, or execution implications.

From the tool's definition Link an opportunity to a company and/or point of contact

Documented attack patterns abuse exactly the kind of access link_opportunity_to_company gives an agent:

POLICY

How to control link_opportunity_to_company

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 link_opportunity_to_company:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "link_opportunity_to_company": {
      "limits": [
        {
          "counter": "link_opportunity_to_company_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

link_opportunity_to_company stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Twenty MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

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EXPLORE

Related tools and policies

More Twenty MCP Server tools

Write transfer_contact_to_company Transfer a contact (person) from one company to another Write create_comment Create a comment on any CRM record Write create_company Create a new company in Twenty CRM Write create_contact Create a new contact (person) in Twenty CRM Write create_note Create a new note in Twenty CRM Write create_opportunity Create a new opportunity/deal in Twenty CRM Write create_task Create a new task in Twenty CRM Write update_company Update an existing company in Twenty CRM

All 29 Twenty MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about link_opportunity_to_company

What does the link_opportunity_to_company tool do? +

Link an opportunity to a company and/or point of contact. It is categorised as a Write tool in the Twenty MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on link_opportunity_to_company? +

Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for link_opportunity_to_company: 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 link_opportunity_to_company? +

link_opportunity_to_company is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit link_opportunity_to_company? +

Yes. Add a rate_limit block to the link_opportunity_to_company 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 link_opportunity_to_company completely? +

Set action: deny in the PolicyLayer policy for link_opportunity_to_company. 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 link_opportunity_to_company? +

link_opportunity_to_company is provided by the Twenty MCP Server MCP server (jezweb/twenty-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Twenty MCP Server tool call.

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.

CHECK YOUR STACK →