email_domain_check

Check if an email domain is valid, reachable, and not disposable.

SERVERGadgetHumans API Hub SOURCEpypi:gadgethumans-api-hub-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-scotia1973-bot-api-hub/email-domain-check.md

WHAT IT DOES

What email_domain_check does on GadgetHumans API Hub

AI agents call email_domain_check to retrieve information from GadgetHumans API Hub without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why email_domain_check is rated Low

This tool is a read-only validation check that retrieves information about email domain properties. It has no side effects on the queried systems, creates no permanent changes, and poses minimal risk even if misused by an AI agent. The worst outcome would be network queries to check multiple domains, which is harmless reconnaissance rather than exploitative action.

From the tool's definition The tool 'Check if an email domain is valid, reachable, and not disposable' performs a query operation that retrieves validation status information about email domains.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs email_domain_check safely

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

email_domain_check Allowed

email_domain_check is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "email_domain_check": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect GadgetHumans API Hub, apply this rule, and every email_domain_check call is checked against it from then on.

FAQ

Questions about email_domain_check

What does the email_domain_check tool do? +

Check if an email domain is valid, reachable, and not disposable. It is categorised as a Read tool in the GadgetHumans API Hub MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on email_domain_check? +

Register the GadgetHumans API Hub MCP server in PolicyLayer and add a rule for email_domain_check: 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 GadgetHumans API Hub. Nothing to install.

What risk level is email_domain_check? +

email_domain_check is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit email_domain_check? +

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

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

email_domain_check is provided by the GadgetHumans API Hub MCP server (pypi:gadgethumans-api-hub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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