ai.verifoxPublished by verifox.aiOfficial publisherv1.2.1Updated Oct 24, 2026
Verify email deliverability & find business emails (single or bulk) via the Verifox API.
Verifox MCP server that lets an assistant verify email deliverability and find business emails, one at a time or in bulk, using paid Fox Credits.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/ai.verifox%2Femail-verifier/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"email-verifier": {
"type": "http",
"url": "https://mcp.verifox.ai/mcp",
"headers": {
"x-api-key": "<YOUR_API_KEY>"
}
}
}
}MCP (Model Context Protocol) server that gives Claude and other AI assistants the Verifox API — verify email deliverability and find business emails, both single and in bulk.
Requires Node.js 18 or newer (the client runs it with npx).
Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json) or Claude Code MCP config — no install needed, npx fetches it:
Get a free API key (1,000 credits) at https://verifox.ai/dashboard/api. Restart Claude Desktop and ask it to "verify these emails".
Config paths and add-commands for Claude Code, Claude Desktop, ChatGPT, Cursor, Gemini CLI, Kiro and Codex: https://verifox.ai/email-verification-mcp
Verify and find are async for large lists: the bulk tools wait ~55s inline, and hand back a jobId to finish via get_job if a job runs longer. Every verification costs 1 credit, including a repeat answered from the 24-hour result cache.
In Claude Desktop (or any MCP client), just ask:
verify_emailverify_emailsverify_emailsfind_emailfind_emailsget_creditsget_jobNo local install: point a remote-capable MCP client at
(streamable HTTP) and send your key in the x-api-key header.
Run straight from source with Bun (no build):
VERIFOX_API_URL defaults to https://api.verifox.ai when unset. For local
development against the API on port 8001, set it to http://localhost:8001.
Restart your client and the tools appear in its tool list.
The same server also runs as a streamable-HTTP MCP endpoint (for Smithery,
claude.ai connectors, and other remote MCP clients). Set MCP_TRANSPORT=http
(or a PORT) and it listens on POST /mcp with a GET /health check:
In HTTP mode the Verifox API key is read per request from the
Authorization: Bearer <foxkey> header (also accepts x-api-key or ?api_key=)
— so one hosted endpoint serves many users, each on their own credits.
Generate a foxkey_* key from the Verifox dashboard (API Keys). The key
authenticates every tool call and is the account whose Fox Credits are charged
(verify costs 1 credit per email, find 10 per contact; get_credits is free).
Source: README.md at commit e19d778
Verify whether ONE email address is deliverable. Checks syntax, MX, SMTP, catch-all, disposable, free-provider and role detection, and returns a 0-100 quality score. Charges 1 Fox Credit per uncached email.
emailrequiredproxyBulk-verify a LIST of email addresses. Submits the whole list, waits for completion, and returns one result per email (same fields as verify_email). Best for cleaning lead lists. Charges 1 Fox Credit per email. Large lists that don't finish quickly return a jobId to poll with get_job.
waitemailsrequiredFind ONE person's business email from their name and company domain. Generates ~50 permutations and SMTP-verifies each, waits for the result, and returns the best match (or not_found). Charges 10 Fox Credits per find.
domainrequiredlast_namerequiredfirst_namerequiredmiddle_nameBulk-find business emails for a LIST of contacts (name + company domain each). Submits the list, waits for completion, and returns the found email per contact. Up to 1000 contacts. Charges 10 Fox Credits per contact. Large lists that don't finish quickly return a jobId to poll with get_job.
waitcontactsrequiredGet the current Fox Credit balance for the Verifox account tied to the API key. Free — no credits charged. Use it to check remaining balance before a big verify/find run (verify = 1 credit/email, find = 10 credits/contact).
Takes no parameters.
Check an async job started by verify_emails, find_email, or find_emails. Returns results if finished, otherwise the current status. Use the type shown in the submitting tool's response.
typerequiredjob_idrequired90% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Declare a license in the repository or the registry entry.
{ "mcpServers": { "verifox": { "command": "npx", "args": ["-y", "verifox-mcp"], "env": { "VERIFOX_API_KEY": "foxkey_your_key_here" } } }}https://mcp.verifox.ai/mcpbun install{ "mcpServers": { "verifox": { "command": "bun", "args": ["run", "/FULL/PATH/TO/verifox-mcp/src/index.ts"], "env": { "VERIFOX_API_URL": "https://api.verifox.ai", "VERIFOX_API_KEY": "foxkey_your_key_here" } } }}MCP_TRANSPORT=http PORT=8080 node dist/index.js# or: docker build -t verifox-mcp . && docker run -p 8080:8080 verifox-mcp