crm_create_custom_values

Create custom values in a CRM sub-account.

SERVER0nmcp SOURCE0nmcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-0nork-0nmcp/crm-create-custom-values.md

WHAT IT DOES

What crm_create_custom_values does on 0nmcp

AI agents use crm_create_custom_values to create or update resources in 0nmcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 0nmcp environment.

RISK

Why crm_create_custom_values is rated Medium

The tool creates new custom values within a CRM system, which is a reversible write operation. Severity is medium because misuse could corrupt CRM data or create unauthorized custom fields, but the operation is not destructive, financial, or code execution. The sub-account scope somewhat limits blast radius, preventing full system compromise.

From the tool's definition Tool name includes 'create' and description states 'Create custom values in a CRM sub-account', indicating data creation and modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs crm_create_custom_values safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 0nmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For crm_create_custom_values, this is the rule to start with:

crm_create_custom_values Rate-limited

crm_create_custom_values 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.

View as policy code

policy.json

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

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 0nmcp, apply this rule, and every crm_create_custom_values call is checked against it from then on.

FAQ

Questions about crm_create_custom_values

What does the crm_create_custom_values tool do? +

Create custom values in a CRM sub-account. It is categorised as a Write tool in the 0nmcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on crm_create_custom_values? +

Register the 0n MCP server in PolicyLayer and add a rule for crm_create_custom_values: 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 0nmcp. Nothing to install.

What risk level is crm_create_custom_values? +

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

Can I rate-limit crm_create_custom_values? +

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

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

crm_create_custom_values is provided by the 0n MCP server (0nmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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