validate_email

Validate email address format

SERVERContextForge MCP Gateway SOURCEjrmatherly/mcp-context-forge

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/jrmatherly-mcp-context-forge/validate-email.md

WHAT IT DOES

What validate_email does on ContextForge MCP Gateway

AI agents call validate_email to retrieve information from ContextForge MCP Gateway without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why validate_email is rated Low

Email validation is a query/check operation that examines input against validation rules and returns a result. It does not create, modify, delete, or execute any operations with external consequences. The low severity reflects the minimal blast radius: even if an AI agent misuses this tool, it can only validate malformed or test email addresses, causing no harm.

From the tool's definition Tool name is 'validate_email' with description 'Validate email address format'. This performs a format check against an email address string, which is a read-only validation operation with no side effects, data modification, or external state changes.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs validate_email safely

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

validate_email Allowed

validate_email 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": {
    "validate_email": {}
  }
}

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

The button opens the PolicyLayer dashboard: create your workspace, connect ContextForge MCP Gateway, apply this rule, and every validate_email call is checked against it from then on.

FAQ

Questions about validate_email

What does the validate_email tool do? +

Validate email address format. It is categorised as a Read tool in the ContextForge MCP Gateway MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on validate_email? +

Register the ContextForge MCP Gateway MCP server in PolicyLayer and add a rule for validate_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 ContextForge MCP Gateway. Nothing to install.

What risk level is validate_email? +

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

Can I rate-limit validate_email? +

Yes. Add a rate_limit block to the validate_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 validate_email completely? +

Set action: deny in the PolicyLayer policy for validate_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 validate_email? +

validate_email is provided by the ContextForge MCP Gateway MCP server (jrmatherly/mcp-context-forge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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