sendgrid_add_contact · UnClick MCP: Risk & Policy

WHAT IT DOES

What sendgrid_add_contact does on UnClick

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

PARAMETERS

Parameter	Type	Required	Description
`email`	string	Yes	Contact email address
`api_key`	string	Yes	SendGrid API key
`list_ids`	array	—	List IDs to add the contact to
`last_name`	string	—	Last name
`first_name`	string	—	First name
`phone_number`	string	—	Phone number

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why sendgrid_add_contact needs a policy

This tool creates new contacts or modifies existing contact records in SendGrid, a third-party email marketing platform. It is reversible (contacts can be deleted or modified later), so it falls under Write rather than Destructive.

From the tool's definition Tool description: 'Add or update a marketing contact in SendGrid.' The verbs 'add' and 'update' indicate creation and modification of data.

Risk signalsHandles credentials or secrets (api_key)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendgrid_add_contact Rate-limited

sendgrid_add_contact 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": {
    "sendgrid_add_contact": {
      "limits": [
        {
          "counter": "sendgrid_add_contact_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches UnClick, so you can run agents against it safely.

FAQ

Questions about sendgrid_add_contact

What does the sendgrid_add_contact tool do? +

Add or update a marketing contact in SendGrid. It is categorised as a Write tool in the UnClick MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does sendgrid_add_contact accept? +

sendgrid_add_contact accepts 6 parameters: email, api_key, list_ids, last_name, first_name, phone_number. Required: email, api_key. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on sendgrid_add_contact? +

Register the UnClick MCP server in PolicyLayer and add a rule for sendgrid_add_contact: 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 UnClick. Nothing to install.

What risk level is sendgrid_add_contact? +

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

Can I rate-limit sendgrid_add_contact? +

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

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

sendgrid_add_contact is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.