lookup_email_validate
Validate an email address (syntax + MX-record check). Use for lead-list cleaning before sending cold email. Example call: {"email": "test@example.com"} Cost: $0.005–$0.05 USDC on Base per call.
This record as markdown: /tools/io-github-colinhughes2121-gocreative-agent-api/lookup-email-validate.md
What lookup_email_validate does on GoCreative Agent API
AI agents call lookup_email_validate to retrieve information from GoCreative Agent API without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
email | string | Yes |
Parameters from the server's own tool schema.
Why lookup_email_validate is rated Low
This tool performs passive validation checks (syntax verification and MX-record lookup) on email addresses. It retrieves or queries data about email validity without creating, modifying, deleting, or executing any operations. The financial aspect (cost per call in USDC) is a billing mechanism, not a financial transaction by the tool itself. Classification as Read is appropriate for a validation/lookup utility.
From the tool's definition Tool name and description indicate validation only: 'Validate an email address (syntax + MX-record check)'. The example call shows a single email parameter with no write, delete, or execute operations.
Attacks that exploit this kind of access
The rule that runs lookup_email_validate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GoCreative Agent API, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For lookup_email_validate, this is the rule to start with:
lookup_email_validate is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect GoCreative Agent API, apply this rule, and every lookup_email_validate call is checked against it from then on.
Questions about lookup_email_validate
Validate an email address (syntax + MX-record check). Use for lead-list cleaning before sending cold email. Example call: {"email": "test@example.com"} Cost: $0.005–$0.05 USDC on Base per call. It is categorised as a Read tool in the GoCreative Agent API MCP Server, which means it retrieves data without modifying state.
lookup_email_validate accepts 1 parameter: email. Required: email. The full parameter table on this page comes from the server's own tool schema.
Register the GoCreative Agent API MCP server in PolicyLayer and add a rule for lookup_email_validate: 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 GoCreative Agent API. Nothing to install.
lookup_email_validate is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the lookup_email_validate 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 lookup_email_validate. 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.
lookup_email_validate is provided by the GoCreative Agent API MCP server (https://api.gocreativeai.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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