AI agents use sendgrid_send_email 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.
| Parameter | Type | Required | Description |
|---|---|---|---|
to | string | Yes | Recipient email address |
from | string | Yes | Sender email address (must be verified in SendGrid) |
html | string | — | HTML content |
text | string | — | Plain text content |
api_key | string | Yes | SendGrid API key from app.sendgrid.com |
subject | string | Yes | Email subject line |
to_name | string | — | Recipient display name |
reply_to | string | — | Reply-to email address |
from_name | string | — | Sender display name |
template_id | string | — | SendGrid dynamic template ID |
Parameters from the server's own tool schema.
This tool creates and sends email messages, which is a reversible write operation (emails can be deleted or their effects mitigated, though not fully undone). It does not execute arbitrary code, delete data irreversibly, or transfer money.
From the tool's definition Tool name 'sendgrid_send_email' and description 'Send a transactional email via SendGrid' indicate the tool creates and transmits email messages.
Risk signalsHandles credentials or secrets (api_key) · Accepts raw HTML/template content (html) · High parameter count (10 properties)
Attacks that exploit this kind of access
Send a transactional email via 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.
sendgrid_send_email accepts 10 parameters: to, from, html, text, api_key, subject, to_name, reply_to, from_name, template_id. Required: to, from, api_key, subject. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for sendgrid_send_email: 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.
sendgrid_send_email 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 sendgrid_send_email 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 sendgrid_send_email. 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.
sendgrid_send_email 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →