order_by, filter, limit, depth, starting_after or ending_before can be provided to request your blocklists
AI agents call findManyBlocklists 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 blocklist data from the Twenty CRM system using query parameters. It performs no side effects, creates no new data, executes no code, and deletes nothing. The parameters are all read-only query modifiers (pagination, sorting, filtering). Even if an AI agent misuses this tool, the worst outcome is retrieving existing blocklist information, which poses minimal risk.
From the tool's definition Tool name 'findManyBlocklists' with description stating it can be used to 'request your blocklists' with filtering, ordering, and pagination parameters (**order_by**, **filter**, **limit**, **depth**, **starting_after**, **ending_before**).
Documented attack patterns abuse exactly the kind of access findManyBlocklists 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 findManyBlocklists:
{
"version": "1",
"default": "deny",
"tools": {
"findManyBlocklists": {}
}
}findManyBlocklists is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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order_by, filter, limit, depth, starting_after or ending_before can be provided to request your blocklists. 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 findManyBlocklists: 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.
findManyBlocklists 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 findManyBlocklists 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 findManyBlocklists. 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.
findManyBlocklists 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.
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219 Twenty MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.