About ColdPulse - AI Cold Outreach & Remote MCP Gateway
AI-powered B2B cold email engine with Remote MCP server for Claude & Cursor.
ColdPulse is a production-ready asynchronous Python backend and Remote MCP (Model Context Protocol) Gateway designed for automated, safe B2B cold emailing via AI assistants (Claude Desktop, Cursor). Key Features & Architecture: Remote MCP Gateway: Real-time Server-Sent Events (SSE) protocol allowing Claude / Cursor to safely manage campaigns and audit infrastructure via AI tools. Automated Pre-Flight Safety Checks: Real-time DNS verification (SPF, DKIM, DMARC) and RBL spam blacklist monitoring using dnspython. Inbox Warmup & Anti-Ban Controls: Strict mailbox warming checks (blocks sending if <14 days warmup) and hardcoded 50 emails/day per domain limit with randomized delivery intervals. Instantly.ai API v2 Integration: Automated campaign creation, lead assignment, and custom isolated webhooks for instant reply detection and automatic follow-up cancellations. ZeroBounce API Integration: Ready for batch email validation and spam-trap filtering. Modern Robust Stack: Built with FastAPI (async), PostgreSQL 16 (SQLAlchemy 2.0 async), Redis 7 & Celery for delayed queues, packaged in Docker Compose with Nginx SSL reverse-proxy configurations. BYOK (Bring Your Own Keys) Architecture: Fully isolated multi-tenant design where users provide their own keys, keeping operational infrastructure costs near zero ($5-10/mo VPS). Included in Sale: Full, clean source code repository with zero technical debt. Complete Docker Compose setup (FastAPI, Celery worker, PostgreSQL, Redis). Production-ready Nginx configuration optimized for SSE streaming. Full API documentation and Claude Desktop integration instructions.
Project details
Next step: <p>Opportunities for the Buyer:</p><p>1. Turnkey SaaS Launch: Connect LemonSqueezy/Stripe, put up a simple landing page, and market it as a specialized $19/mo AI Cold Outreach agent for sales teams and agencies.</p><p>2. Agency Upsell: Use this infrastructure internally in a lead generation or marketing agency to automate cold emailing through Claude/Cursor with zero risk of domain burn.</p><p>3. Feature Expansion: Add more email providers (Smartlead, Mailgun) or integrate lead-scraping APIs directly into the existing MCP server.</p>
For sale
Asking price: $1,290 USD
What's included
Source code, All related data
Full Docker Compose environment, production Nginx reverse proxy configuration, API documentation, and Claude Desktop MCP setup guide. 14 days of technical handover / onboarding support.
Reason for selling
I am busy with other things and no longer have time to maintain this project.
Project metrics
Average Monthly Visitors: Pre-launch
Average Monthly Revenue: Pre-revenue
Average Monthly Downloads: Pre-launch / New project
More side projects like ColdPulse - AI Cold Outreach & Remote MCP Gateway
Remove Anything
- AI remove backgrounds, objects & watermarks from images
CV Objective
- AI resumes, ATS checks, and tailored cover letters
TradeiQ
- Automated IQ Option SaaS with dark UI & active users
SideProjectors is a marketplace where developers can sell, buy, and showcase side projects and find co-founders. The platform lets you list projects for sale, discover projects to buy, seek co-founders, and share projects with the community.