gmailSend · Remote MCP Server on Cloudflare MCP

WHAT IT DOES

What gmailSend does on Remote MCP Server on Cloudflare

AI agents use gmailSend to create or update resources in Remote MCP Server on Cloudflare — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Remote MCP Server on Cloudflare environment.

WHY IT NEEDS A POLICY

Why gmailSend needs a policy

Sending emails is a Write operation—it creates new data (email messages) with reversible effects (emails can be unsent within short windows or deleted). However, it carries high severity because an AI agent with this capability could send emails on behalf of the user to arbitrary recipients with arbitrary content, potentially impersonating the user, phishing others, or causing reputational harm.

From the tool's definition Tool name is 'gmailSend' and description states '发送Gmail邮件' (send Gmail email in Chinese). This directly indicates the tool sends/creates email messages.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gmailSend Rate-limited

gmailSend 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": {
    "gmailSend": {
      "limits": [
        {
          "counter": "gmailsend_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 Remote MCP Server on Cloudflare, so you can run agents against it safely.

FAQ

Questions about gmailSend

What does the gmailSend tool do? +

发送Gmail邮件. It is categorised as a Write tool in the Remote MCP Server on Cloudflare MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gmailSend? +

Register the Remote MCP Server on Cloudflare MCP server in PolicyLayer and add a rule for gmailSend: 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 Remote MCP Server on Cloudflare. Nothing to install.

What risk level is gmailSend? +

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

Can I rate-limit gmailSend? +

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

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

gmailSend is provided by the Remote MCP Server on Cloudflare MCP server (williamsuiself/remote-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.