List, inspect, create, update, or delete contact groups. Use this to organize contacts into named collections (e.g.,
AI agents use monica_manage_group to create or update resources in Monica CRM MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Monica CRM MCP Server environment.
The tool description explicitly lists create, update, and delete capabilities for contact groups. Although delete is technically irreversible, contact groups are organizational containers rather than the core business data (contacts themselves). The tool does not directly delete contacts.
From the tool's definition Tool performs 'create, update, or delete contact groups' according to the description. While delete operations are present, the primary functionality emphasizes list, inspect, create, and update—reversible operations on organizational metadata (contact…
Documented attack patterns abuse exactly the kind of access monica_manage_group gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Monica CRM MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for monica_manage_group:
{
"version": "1",
"default": "deny",
"tools": {
"monica_manage_group": {
"limits": [
{
"counter": "monica_manage_group_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}monica_manage_group 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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List, inspect, create, update, or delete contact groups. Use this to organize contacts into named collections (e.g.,. It is categorised as a Write tool in the Monica CRM MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Monica CRM MCP Server MCP server in PolicyLayer and add a rule for monica_manage_group: 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 Monica CRM MCP Server. Nothing to install.
monica_manage_group 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 monica_manage_group 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 monica_manage_group. 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.
monica_manage_group is provided by the Monica CRM MCP Server MCP server (jacob-stokes/monica-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Monica CRM 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.
21 Monica CRM MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.