Create a new opportunity/deal in Twenty CRM
AI agents use create_opportunity to create or update resources in Twenty MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Twenty MCP Server environment.
This tool creates new business opportunity records in a CRM system. While reversible (opportunities can be deleted/modified later), creating opportunities can trigger business workflows, notifications, and financial tracking processes.
From the tool's definition Tool name is 'create_opportunity' with description 'Create a new opportunity/deal in Twenty CRM'. The verb 'Create' indicates a write operation that adds new data to the CRM system.
Documented attack patterns abuse exactly the kind of access create_opportunity 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 create_opportunity:
{
"version": "1",
"default": "deny",
"tools": {
"create_opportunity": {
"limits": [
{
"counter": "create_opportunity_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}create_opportunity 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.
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Create a new opportunity/deal in Twenty CRM. 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.
Register the Twenty MCP Server MCP server in PolicyLayer and add a rule for create_opportunity: 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.
create_opportunity is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the create_opportunity 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 create_opportunity. 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.
create_opportunity 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.
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.
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29 Twenty MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.