email_find

Find probable email addresses for a person at a company domain. Generates candidates and attempts SMTP verification. Zero API cost.

Part of the MCP Lead Gen — Free AI Lead Generation MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

flipfactory/mcp-leadgen Read

// WHEN AI AGENTS USE THIS TOOL

AI agents call email_find to retrieve information from MCP Lead Gen — Free AI Lead Generation without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

// WHY ENFORCE A POLICY ON EMAIL_FIND

Even though email_find only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

// RECOMMENDED POLICY

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

flipfactory-mcp-leadgen.yaml

tools:
  email_find:
    rules:
      - action: allow

See the full MCP Lead Gen — Free AI Lead Generation policy for all 4 tools.

// DETAILS

Tool Name email_find

Category Read

MCP Server MCP Lead Gen — Free AI Lead Generation MCP Server

Risk Level Low

// MORE MCP LEAD GEN — FREE AI LEAD GENERATION TOOLS

Write export Read business_search Read contact_enrich

// WHAT CAN GO WRONG

Agents calling read-class tools like email_find have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER READ TOOLS ACROSS MCP SERVERS

Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.

Open Library MCP Server get_author_info Open Library MCP Server get_author_photo Open Library MCP Server get_authors_by_name Open Library MCP Server get_book_by_id Open Library MCP Server get_book_by_title Open Library MCP Server get_book_cover

// RELATED READING

// FAQ

What does the email_find tool do? +

Find probable email addresses for a person at a company domain. Generates candidates and attempts SMTP verification. Zero API cost.. It is categorised as a Read tool in the MCP Lead Gen — Free AI Lead Generation MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on email_find? +

Add a rule in your Intercept YAML policy under the tools section for email_find. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the MCP Lead Gen — Free AI Lead Generation MCP server.

What risk level is email_find? +

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

Can I rate-limit email_find? +

Yes. Add a rate_limit block to the email_find rule in your Intercept 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_find completely? +

Set action: deny in the Intercept policy for email_find. 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_find? +

email_find is provided by the MCP Lead Gen — Free AI Lead Generation MCP server (flipfactory/mcp-leadgen). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

email_find

Enforce policies on MCP Lead Gen — Free AI Lead Generation