---
title: "Open-source Claude Code skills for outbound sales"
url: https://stacklist.com/card/0e3e9d9c-6e3f-401a-b6b3-d58b25f3679d
source_url: "https://github.com/growthenginenowoslawski/coldoutboundskills"
stack: https://stacklist.com/stack/c691055b-de15-47a1-ad6a-6c4ecec55f18
summary: "Cold Outbound Skills Repository is an open-source collection of 29 Claude Code skills organized in 5 tracks for building complete B2B cold email campaigns from strategy through execution. Built by GrowthEngineX from 1,000+ real campaigns, it provides tools for ICP definition, lead sourcing, copywriting, infrastructure setup, and campaign automation."
tags: "cold-email, lead-generation, b2b-sales, automation, claude-code, open-source, copywriting"
key_entities: "GrowthEngineX (organization), Claude Code (technology), Smartlead (technology), Prospeo (technology), Zapmail (technology), cold-email-kickoff (concept), lead-magnet (concept), ICP (Ideal Customer Profile) (concept)"
classification: "framework"
content_hash: "sha256:6062441adef5395a6cd30cef76d277ddbe8bc9e06670c170e0486283369de79c"
acp_version: "0.2"
token_counts_approximate: 1868
visibility: public
agent_accessible: true
status: "final"
---

# Open-source Claude Code skills for outbound sales

Cold Outbound Skills Open-source Claude Code skills for cold email infrastructure, lead sourcing, copywriting, and operations. Built by GrowthEngineX from patterns across 1,000+ real B2B campaigns. 28 skills that work together. Clone the repo, bring your API keys, point Claude Code at it, go from zero to a running campaign. New here? Invoke /cold-email-kickoff — it's the guided entry point that orchestrates ICP + lead magnet + strategy + plan in one flow. What's in here 29 skills organized in 5 tracks. New to cold email? Start with /cold-email-kickoff . It orchestrates ICP → lead magnet → campaign strategy → plan in one guided flow. Track 1 — Strategy (before you send anything) cold-email-kickoff — single "start here" orchestrator (recommended entry point) icp-onboarding — conversational intake that produces a client-profile.yaml (scrapes website first) lead-magnet-brainstorm — figure out what to offer for free in your cold emails campaign-strategy — generates 15-25 campaign ideas with AI strategies + value props campaign-copywriting — stepwise copy writer (direction → subject → body → final YAML) Track 2 — Infrastructure zapmail-domain-setup-public — buy .com / .co domains on Dynadot, provision inboxes on Zapmail smartlead-inbox-manager — warmup settings, signatures (name/title/company/address), active/insurance tagging email-deliverability-audit — diagnostic tool (SPF/DKIM/DMARC, spam placement, 1% rule) deliverability-incident-response — triage playbook for spam, bounces, blacklists, warmup blocks Track 3 — List Building prospeo-full-export — title-first lead search (paginated, 25K+) prospeo-search-api — Prospeo filter reference blitz-list-builder — domain-first contact discovery google-maps-list-builder — scrape Google Maps for local SMB lists disco-like — lookalike company discovery (seed domains or NL ICP text) competitor-engagers — find people engaging with competitor LinkedIn posts icp-prompt-builder — required qualification step invoked by every list-building skill list-quality-scorecard — grade a lead CSV across 8 dimensions before uploading Track 4 — Copy & Send cold-email-starter-kit — the 14-step end-to-end tutorial (alternative to /cold-email-kickoff ) spam-word-checker — scan copy for deliverability-killing phrases smartlead-spintax — add spintax variations to emails smartlead-api — Smartlead API reference smartlead-campaign-upload-public — DRAFT-upload leads.csv + variants.yaml to Smartlead (always DRAFT, you hit Start manually) Track 5 — Iterate & Automate positive-reply-scoring — the metric that matters (positive replies / total sent) experiment-design — single-variable experiment framework auto-research-public — autonomous campaign launcher (scrape → ICP → leads → personalize → upload) personalization-subagent-pattern — reusable pattern for per-lead Claude sub-agent personalization deliverability-test-public — compare reply/bounce by inbox type cold-email-weekly-rhythm — Monday/Wednesday/Friday operational playbook — what separates hobbyist from top-1% Getting started 1. Install Claude Code This repo is designed for Claude Code. Install from https://claude.com/claude-code . 2. Clone and configure git clone < this-repo-url > ~ /cold-email-ai-skills cd ~ /cold-email-ai-skills cp .env.example .env # Edit .env with your API keys (you don't need all of them — only the skills you'll use) 3. Install dependencies npm install -g tsx cd skills/cold-email-starter-kit npm install 4. Verify credentials npx tsx skills/cold-email-starter-kit/scripts/verify-credentials.ts 5. Start with the kickoff orchestrator If you've never run cold email before, invoke the kickoff skill from Claude Code: /cold-email-kickoff It asks whether you have infrastructure already, then orchestrates ICP + lead magnet + campaign strategy + plan in a single guided flow. Produces a campaign-plan.md and hands you off to the right next skill based on your current state. Alternative: /cold-email-starter-kit — the longer manual 14-step tutorial. Use this if you want to learn each piece deeply rather than move fast. API keys required (bring your own) Service Env var What it's for Skills that use it Smartlead SMARTLEAD_API_KEY Send emails, manage inboxes inbox-manager, starter-kit, auto-research, audit, scoring Prospeo PROSPEO_API_KEY List building (title-first) prospeo-*, auto-research Dynadot DYNADOT_API_KEY Buy domains zapmail-setup Zapmail ZAPMAIL_API_KEY Create inboxes zapmail-setup MillionVerifier MILLIONVERIFIER_API_KEY Validate emails before sending waterfall, auto-research Blitz BLITZ_API_KEY Domain-to-contacts lookup blitz-list-builder RapidAPI RAPIDAPI_KEY Google Maps scraping, LinkedIn data google-maps-*, competitor-engagers Instantly INSTANTLY_API_KEY Alternative sending platform starter-kit (09) OpenWebNinja OPENWEBNINJA_KEY Company news enrichment starter-kit (07) OpenRouter OPENROUTER_API_KEY AI company analysis enrichment starter-kit (07), competitor-engagers The minimum viable setup for your first campaign is: Dynadot + Zapmail + Prospeo + Smartlead . Start there, add more as you need them. Recommended path If you've never run cold email: /cold-email-kickoff — one guided flow: ICP → lead magnet → strategy → plan → next-skill menu Follow the menu's recommended next skill (infra setup OR list building, depending on your current state) After campaign launch, wait 21 days, then /positive-reply-scoring Add /cold-email-weekly-rhythm to your calendar for ongoing ops If you have experience but no automation: /icp-onboarding — lock down your ICP /smartlead-inbox-manager — configure your existing inboxes properly /email-deliverability-audit — fix any domain/inbox issues before scaling /auto-research-public — daily automated campaign launches If you're debugging a broken campaign: /email-deliverability-audit — find the infrastructure issue /positive-reply-scoring — see if replies are positive or hostile /deliverability-test-public — compare across inbox types /spam-word-checker — scan copy for banned phrases Directory layout cold-email-ai-skills/ README.md # this file .env.example # template for your API keys skills/ <skill-name>/ SKILL.md # the skill definition (required) scripts/ # runnable code references/ # deeper docs profiles/ # YOUR client profiles + experiment logs (gitignored) <business-slug>/ client-profile.yaml experiments/ scores/ Cost expectations First campaign (2,000 leads, 20 domains, 40 inboxes): Domains: ~$240 one-time (20 × $12 .com). Fall back to .co ( $8-30) if .com is taken. Zapmail: ~$60/mo for 40 inboxes Prospeo: ~$20 for 2,000-lead export Smartlead: ~$39/mo starter plan MillionVerifier: ~$5 for 2,000 validations Month 1 total: ~$360. Recurring: ~$130/mo. See skills/cold-email-starter-kit/references/00-getting-started.md for full breakdown. A note on ethics Cold email is legal when done right, but it's a privilege. Don't spam. Don't email consumers. Honor unsubscribes instantly. Include a real physical address. Be the kind of sender you'd want to receive email from. The best cold emails are the ones the recipient is glad they got. Contributing This repo is a collection of patterns refined over thousands of real campaigns. Improvements welcome — PRs should include: Real-world test results (not theoretical changes) Generalizable insight (not hyper-specific to one industry) Keep beginner-friendliness as the north star License MIT — use it, fork it, profit from it. Attribution appreciated but not required.