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Varnan-Tech/opendirectory

用於驗證冷郵件、豐富潛在客戶清單,或根據 CSV 使用 ValidEmail.co 或開源 Reacher 引擎自動猜測電子郵件地址。

opendirectory 是什麼?

這項技能能自動處理包含名字、姓氏與公司名稱的 CSV 潛在客戶清單,自動查找公司域名、生成常見的電子郵件格式,並嚴格驗證其可送達性。它解決了聯絡資訊缺失的問題,先猜測可能的電子郵件,再確認哪些是真實存在。支援三種驗證引擎:ValidEmail.co(推薦,提供免費額度及高準確度)、自託管的 Reacher 開源後端(需開放的 Port 25),以及不建議使用的本機 Reacher CLI。使用者只需提供 CSV,技能即可自動推斷域名並產生 email 格式,最後輸出經過驗證的結果。

相容平台~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/Varnan-Tech/opendirectory/tree/main/skills/cold-email-verifier

在你喜歡的 AI 中提問

開啟一個已預先載入此 Agent Skill 的新對話。

說明文件

冷郵件驗證與猜測工具(公開)

概述

這項技能會自動處理包含名字、姓氏與公司名稱的 CSV 潛在客戶清單,找出他們的企業域名,產生專業的電子郵件組合,並嚴格驗證其可送達性。

它旨在解決聯絡資訊缺失的問題,先猜測核心的電子郵件形式,再確認哪些是真實存在的。

電子郵件猜測引擎

你的 CSV 不需要提供電子郵件!如果 CSV 只包含名字、姓氏和公司名稱,腳本會自動:

  1. 使用免費的 Clearbit API 查詢公司官方域名。
  2. 清理名稱(移除標點符號)並產生 3 種最常見的企業電子郵件格式:

驗證方法(選擇你的引擎)

一旦猜測出電子郵件,腳本必須驗證它們。我們支援三種方法:

1. ValidEmail.co API(強烈推薦)

絕對是最佳選擇。 ValidEmail.co 提供企業級準確度,能繞過嚴格的 catch-all 伺服器,並為你處理 IP 信譽問題。

  • 免費方案: 他們提供慷慨的免費方案(註冊即享 50 次免費驗證額度)讓你快速上手!
  • 使用方法: 前往 validemail.co,建立帳戶,取得你的 API 金鑰,然後以 --mode validemail 執行腳本。

2. Reacher 開源版(自託管)

如果你想要 100% 免費的開源解決方案,你可以在雲端服務商(如 AWS、GCP 或 Hetzner)上自行託管 Reacher 後端。

  • GitHub 倉庫: reacherhq/check-if-email-exists
  • 重要事項: 你的雲端服務商必須開放外部 Port 25。
  • 使用方法: 託管 Docker 容器,然後以 --mode reacher-http --reacher-url "http://<你的伺服器 IP>:8080/v0/check_email" 執行腳本。

3. Reacher 本機 CLI(不建議 / 不可靠)

你可以直接在筆電上執行 Reacher CLI。

  • 警告: 全球的住宅 ISP 都會封鎖 Port 25 以防止垃圾郵件。此外,主要的郵件伺服器(Microsoft、Google)會自動拒絕來自住宅 Wi-Fi IP 位址的 SMTP 握手。
  • 結果: 你會得到大量的誤判與超時。請改用 ValidEmail.co。

如何執行

首先,確保已安裝相依套件:pip install -r requirements.txt

使用 ValidEmail.co(建議):

export VALIDEMAIL_API_KEY="你的 API 金鑰"
python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode validemail

使用自託管 Reacher:

python scripts/email_verifier.py --input leads.csv --output verified_leads.csv --mode reacher-http --reacher-url "http://你的伺服器 IP:8080/v0/check_email"

CSV 格式要求

輸入的 CSV 必須包含以下精確的欄位標題(或其特定對應):

  • First Name
  • Last Name
  • Company Name
  • Domain(可選 - 強烈建議填入以提升準確度)

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

Varnan-Tech/opendirectory

Use when the user asks to generate a blog cover image, thumbnail, or article header. Automatically uses modern typography, brand logos, and Google Search grounding to create beautiful 16:9 images with Gemini 3.1 Flash Image Preview.

Varnan-Tech/opendirectory

World-class brand strategist and naming expert. Uses an interrogation-led discovery phase to extract your brand's DNA, then applies scientific naming frameworks (Phonosemantics) and automated multi-TLD domain checking.

Varnan-Tech/opendirectory

Use when the user asks to generate or update a project's CLAUDE or AGENTS context file from a codebase scan. Writes a focused file under 100 lines containing only the non-obvious build commands, conventions, and gotchas Claude Code needs.

Varnan-Tech/opendirectory

Competitive intelligence orchestrator tracking companies across 8+ platforms (GitHub, Twitter, Reddit, HN, PH, YC Jobs) with heat scores and AI briefings.

Varnan-Tech/opendirectory

Give it your product URL or description. It finds your top 5 competitors, runs three-track PR research across all of them (editorial, podcasts, communities), identifies which channels appear most frequently, looks up the journalist or host for each, and returns a tiered outreach list with story angles and ready-to-send cold pitch drafts tailored to your product. Use when asked to find PR opportunities, discover where competitors got featured, build a media outreach list, find which journalists cover my space, or get pitch templates for press coverage.

Varnan-Tech/opendirectory

Generate high-converting, deep-dive growth case studies in MDX format. Use this skill when asked to write a case study or blog post about a company's growth, tech stack, or product-led strategy. It handles the full pipeline (researching the company via Tavily, generating a 16:9 cover image, quality checking the draft, uploading assets to cloud storage, and pushing directly to the target repository).

Varnan-Tech/opendirectory

Scans your project for outdated npm, pip, Cargo, Go, or Ruby packages. Runs a CVE security audit. Fetches changelogs, summarizes breaking changes with Gemini, and opens one PR per risk group (patch, minor, major). Includes Diagnosis Mode for install conflicts. Use when asked to update dependencies, check for outdated packages, open dependency PRs, scan for package updates, audit for CVEs, or flag breaking changes in upgrades. Trigger when a user says "check for outdated packages", "update my dependencies", "open PRs for dependency updates", "scan for CVEs", or "which packages need upgrading".

Varnan-Tech/opendirectory

Generates and updates README.md and API reference docs by reading your codebase's functions, routes, types, schemas, and architecture. Uses graphify to build a knowledge graph first, then writes accurate docs from it. Use when asked to write docs, generate a README, document an API, update stale docs, create an API reference from code, add an architecture section, or document a project in any language. Trigger when a user says their docs are missing, outdated, or wants to document their codebase without writing it manually.

Varnan-Tech/opendirectory

Evaluates expired domain candidates against a target niche, scores them by topical relevance, historical activity level, and history cleanliness, then outputs a ranked shortlist with explainable reasoning and risk flags.

Varnan-Tech/opendirectory

Brutally honest developer-experience audit for a GitHub repo. Scores 10 DX dimensions (time-to-first-success, README clarity, visual proof, install, quick-start, docs, examples, community, trust, marketing), writes a shareable roast in the requested tone (brutal/honest/kind), produces a prioritized action plan ranked by impact × effort, and sketches an ideal README. Trigger when user says "roast my repo", "audit my README", "dx audit", "developer experience review", "score my GitHub project", "before launch checklist", or "make my repo shareable".

Varnan-Tech/opendirectory

Drafts and designs a complete HTML email newsletter from a topic or content brief. Outputs paste-ready HTML for Loops, Mailchimp, Beehiiv, Resend, or any standard email platform. Includes subject line options and plain-text fallback. Trigger when a user says "write a newsletter", "draft an email newsletter", "create an HTML email", "design an email for my subscribers", or "write a newsletter about [topic]".

Varnan-Tech/opendirectory

Takes a GitHub PR URL or the current branch and writes a plain-English explanation of what it does and why, then posts it as a PR comment. Use when asked to explain a PR, summarize a pull request, write a plain-English description of a PR, add a summary comment to a PR, or understand what a PR changes. Trigger when a user says "explain this PR", "summarize this pull request", "what does this PR do", "add a comment explaining the PR", or shares a GitHub PR URL and asks what it does.

Varnan-Tech/opendirectory

Audit how often LLMs recommend your brand vs competitors and generate a GEO action plan.

Varnan-Tech/opendirectory

Takes a competitor's public GitHub repo URL, fetches their open issues via the GitHub REST API, filters noise locally, clusters issues into 6 demand categories, computes a demand score per issue and per cluster, and outputs a ranked demand gap report with a GTM messaging brief. Use when asked to scan a competitor's GitHub issues, find what their users are begging for, turn GitHub complaints into product positioning, identify competitor feature gaps, or generate messaging from real user demand. Trigger when a user says "scan competitor issues", "what are users asking for on X repo", "find demand gaps in Y", "turn GitHub issues into messaging", or "what should I build based on competitor complaints".

Varnan-Tech/opendirectory

Find recurring confusion in your repo's GitHub Discussions, rank it by urgency, and draft the actual docs fixes and content angles — with verbatim community quotes and source links as evidence.

Varnan-Tech/opendirectory

SEO keyword research workflow for blog generation using Google Trends data. Use when writing blog posts, planning content calendars, or optimizing articles for search engines. Finds breakout keywords, builds content structure, and generates SEO-optimized blog outlines targeting tech and developer audiences.

Varnan-Tech/opendirectory

Generates a professionally designed case study PDF for B2B SaaS sales and marketing. Supports 7 page layouts, 9 style presets, 1-4 page output. Trigger when user says "create a case study", "write a customer story", "make a case study PDF", "design a success story", "turn this customer win into a PDF".

Varnan-Tech/opendirectory

Generates data visualization charts (bar, line, area, pie, doughnut, scatter, radar, treemap) as PNG using Apache ECharts v6. 1080×1080px default, 5 style presets, highlight annotations. Trigger when user says "create a chart", "visualize data", "make a bar chart", "line graph", "pie chart", "data visualization", "chart this data", "plot", "graph", or "visualize these numbers".

Varnan-Tech/opendirectory

Creates professionally designed B2B SaaS e-books in HTML + CSS, exported as print-ready PDF. 3–10 pages, 9 style presets, 11 page layout types. Trigger when user says "create an ebook", "design a lead magnet", "make a PDF guide", "build a gated content piece", "write a B2B ebook", "design a white paper", "create a nurture asset", or "make a PDF report".

Varnan-Tech/opendirectory

Fetches low-star App Store and Google Play reviews, clusters them into broken-promise patterns, and generates a ranked copy brief with positioning opportunities.

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