sendgrid_send_email · Integrations MCP: Risk & Policy

WHAT IT DOES

What sendgrid_send_email does on Integrations MCP

AI agents invoke sendgrid_send_email to trigger actions in Integrations MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why sendgrid_send_email needs a policy

Sending an email is an external operation with real-world consequences (messages delivered to recipients). It fits 'Execute' as it triggers an external operation. The description is empty, so classification is based on the name alone, but 'send_email' is unambiguous. Severity is high because a misused tool could send spam, phishing, or sensitive content to arbitrary recipients at scale via SendGrid.

From the tool's definition Tool name 'sendgrid_send_email' — 'send_email' implies triggering an external email delivery operation via SendGrid API.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sendgrid_send_email Rate-limited

sendgrid_send_email stays usable, but rate-capped — a runaway agent can't fire it dozens of times 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_send_email": {
      "limits": [
        {
          "counter": "sendgrid_send_email_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about sendgrid_send_email

What does the sendgrid_send_email tool do? +

sendgrid_send_email. It is categorised as a Execute tool in the Integrations MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on sendgrid_send_email? +

Register the Integrations 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 Integrations MCP. Nothing to install.

What risk level is sendgrid_send_email? +

sendgrid_send_email is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit sendgrid_send_email? +

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.

How do I block sendgrid_send_email completely? +

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.

What MCP server provides sendgrid_send_email? +

sendgrid_send_email is provided by the Integrations MCP server (shriram-vasudevan/integrations-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.