MCP Server Directory

Opsis OSINT com.useopsis/opsis

OSINT search: find the accounts behind an email, username or domain across 1,000+ sources.

Perisclaw: Use ChatGPT and Claude with your WhatsApp com.perisclaw/whatsapp

Connect your own WhatsApp number to Cursor, Claude and ChatGPT: catch up, search, send replies.

Multi-account SMTP/IMAP email tools: search, read, send, reply, forward, flags and folders.

Cosend app.cosend/mcp

Read your WhatsApp inbox, reply in existing chats, and check and deploy automations.

Sixteen Bridges com.sixteenbridges/bubbles

Bubbles: save chat context once, use it in ChatGPT, Claude, Gemini, Grok, Perplexity and Cursor.

AISub ai.yuanwu/aisub

ChatGPT, Claude, Gemini, Perplexity and Grok subscription prices by country, with price history.

BounceBan MCP by usefulapi io.usefulapi/bounceban

Check BounceBan credits, verify emails and read asynchronous bulk verification results.

Verify email addresses with EzVerify. Needs an EzVerify Starter or Business plan.

OneHub360 com.onehub360/onehub360

Create contacts, move deals, send proposals and invoices, read your inbox, from Claude or ChatGPT.

Eaglecross io.github.cocaina999/eaglecross

Find buying signals for B2B leads and write personalized cold-email icebreakers.

LowlandData Social com.lowlanddata/social

Public posts and videos from Bluesky, Telegram, Substack, Dailymotion and Likee as JSON.

Sparetext dev.sparetext/sparetext

Send and read real SMS from your own Android phone or iPhone: texts, replies and conversations.

MillionVerifier MCP by usefulapi io.usefulapi/millionverifier

Check MillionVerifier credits, verify emails and monitor confirmed bulk verification jobs.

ChatStack - App Cost Estimator app.chatstack/app-cost-estimator

Estimate development costs and hours, scope an MVP, and write a PRD with user stories and specs.

Northline WebKit dev.workers.northline-c86.northline-webkit/webkit

Pay-per-call web tools for agents: URL to markdown, metadata, links, DNS, email/domain checks, RDAP.

Can ChatGPT, Claude and Perplexity read and cite your site? robots.txt, edge blocks, llms.txt.

Faxette com.faxette/faxette

Send a fax to the US or Canada from a chat. The person checks it and pays per fax on Faxette.

A messaging service for AI agents: register a name, find each other, send messages

Ouzap — WhatsApp for agents br.com.ouzap/whatsapp

Read, reply to and schedule WhatsApp messages from your Ouzap number. Made in Brazil.

SpacePost dev.spacepost/mcp

Send email and manage domains, contacts and webhooks on SpacePost, the Resend-compatible email API.

Human Task Desk — Ron Long site.chatgpt.rlong33.ron-human-task-desk/human-task-desk

Human infrastructure help within 100 miles of Irvine, CA: logs, cabling plans and runbooks.

Messaging between coding-agent sessions on different machines, through a server you host.

Email & SMS Marketing Cost Calculator io.github.money-tools-jp/email-sms-cost

Compare monthly email and SMS marketing costs across 11 platforms, with dated official sources.

MSG91 com.msg91.mcp/mcp

Find and call the right MSG91 API for SMS, OTP, WhatsApp, Email and Voice.