Aggregates RSS feeds from the past week, synthesizes the top stories using Gemini, and publishes a newsletter digest to Ghost CMS.
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Varnan-Tech/opendirectory newsletter-digest --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/newsletter-digest .claude/skills/newsletter-digest && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .claude/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digestType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Varnan-Tech/opendirectory newsletter-digest --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/newsletter-digest .agents/skills/newsletter-digest && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .agents/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Varnan-Tech/opendirectory newsletter-digest --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/newsletter-digest .cursor/skills/newsletter-digest && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .cursor/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Varnan-Tech/opendirectory.git --path skills/newsletter-digest--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Varnan-Tech/opendirectory newsletter-digest --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/newsletter-digest .gemini/skills/newsletter-digest && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .gemini/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Varnan-Tech/opendirectory newsletter-digestInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/newsletter-digest .github/skills/newsletter-digest && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .github/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Varnan-Tech/opendirectory newsletter-digest --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Varnan-Tech/opendirectory.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/newsletter-digest .opencode/skills/newsletter-digest && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "newsletter-digest" agent skill from https://github.com/Varnan-Tech/opendirectory/tree/main/skills/newsletter-digest into .opencode/skills/newsletter-digest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "newsletter-digest", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
newsletter-digestAggregates RSS feeds from the past week, synthesizes the top stories using Gemini, and publishes a newsletter digest to Ghost CMS.
Newsletter Digest is an agent skill from Varnan-Tech/opendirectory. Aggregates RSS feeds from the past week, synthesizes the top stories using Gemini, and publishes a newsletter digest to Ghost CMS. Optionally outputs formatted Markdown for Substack or any other platform. Use when asked to generate a newsletter, create a weekly digest, summarize RSS feeds, compile top stories for a newsletter, or publish a digest to Ghost. Trigger when a user mentions newsletter digest, weekly roundup, RSS digest, compile top stories, or publish to Ghost.
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. The skill folder holds 12 other files, including scripts and reference files (for example `README.md`, `evals/evals.json` and `feeds.json`).
It sits in Writing & Content, covering Newsletters. It works with Substack. The repository describes itself as: AI Agent Skills built for Founders who hate Marketing. The licence is MIT.
7 steps, taken from the step headings in SKILL.md.
Read from SKILL.md and the folder at commit 9bf5144. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Ships 2 files in scripts/ (JavaScript), which the agent can run.
Shell commands in SKILL.md call:
nodenpmFrom the folder's file list and the shell code blocks in SKILL.md.
Hosts in commands or code, which the agent is likely to contact:
another.comFrom URLs in SKILL.md, links to its own repository left out.
Names these keys or tokens, usually read from environment variables:
GEMINI_API_KEYGHOST_ADMIN_KEYFrom names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Newsletter Digest loads about 1.9k tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 124 tokens; SKILL.md has 792 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
The full file from Varnan-Tech/opendirectory at commit 9bf5144, republished under its MIT licence (© Varnan-Tech). 792 words, ~1,926 tokens.
.claude/skills/newsletter-digest/SKILL.md (or your agent's skills folder). This skill also uses 9 other files; get the full folder from GitHub.Aggregate content from RSS feeds, synthesize the week's top stories with Gemini, and publish a digest to Ghost CMS. Supports weekly digests, topic-focused roundups, and curated picks formats.
Apply to all generated digest content:
Banned words — do not use any of these in the digest: incredible, amazing, leveraging, synergize, game-changing, game changer, delve, harness, unlock, groundbreaking, cutting-edge, remarkable, paradigm, revolutionize, disruptive, transformative, thrilled, excited to share, powerful, innovative, comprehensive, actionable, crucial, vital, pivotal, elucidate, utilize, dive deep, tapestry, illuminate, revolutionize
Every claim, statistic, and summary in the digest must come from the fetched articles. Never fabricate data points, quotes, or facts. If a source article has no meaningful content, skip it.
1a. Verify feeds are configured
Check if feeds.json exists in the skill directory:
ls /Users/ksd/Desktop/Varnan_skills/newsletter-digest/feeds.json 2>/dev/nullIf missing, ask the user: "Which RSS feeds should I monitor? Share a list of URLs and I'll create feeds.json."
The format is:
[
{ "url": "https://example.com/feed", "name": "Source Name" },
{ "url": "https://another.com/rss", "name": "Another Source" }
]1b. Verify required environment variables
Check that these are set:
GEMINI_API_KEY (required): for synthesisGHOST_URL and GHOST_ADMIN_KEY (required for Ghost publishing, optional if output-only)If GEMINI_API_KEY is missing, stop and ask the user to set it.
GHOST config is optional. If not set, the skill outputs formatted Markdown instead of publishing.
1c. Verify script dependencies
ls /Users/ksd/Desktop/Varnan_skills/newsletter-digest/node_modules 2>/dev/null | head -1If missing:
cd /Users/ksd/Desktop/Varnan_skills/newsletter-digest && npm installRun the fetch script:
node /Users/ksd/Desktop/Varnan_skills/newsletter-digest/scripts/fetch-feeds.jsThe script:
feeds.json for the list of feedsrss-parser/tmp/newsletter-digest-articles.jsonIf the script errors on a specific feed, it logs a warning and continues. One bad feed does not stop the run.
After the script completes, verify the output:
node -e "
const fs = require('fs');
const data = JSON.parse(fs.readFileSync('/tmp/newsletter-digest-articles.json', 'utf8'));
console.log('Total articles:', data.articles.length);
console.log('From feeds:', data.feedsSummary.map(f => f.name + ': ' + f.count).join(', '));
console.log('Date range:', data.dateRange.from, 'to', data.dateRange.to);
"If fewer than 3 articles are found, warn the user and ask if they want to extend the date range to 14 days. Pass --days=14 to the script to widen the window.
Read references/digest-format.md in full before generating any content. Internalize:
Read references/output-template.md and select the template matching the requested format.
If the user did not specify a format, default to Weekly Roundup.
Read /tmp/newsletter-digest-articles.json and build a synthesis prompt.
Prompt structure:
You are a newsletter editor writing a digest of this week's top stories.
Sources (use ONLY these — do not invent facts):
[For each article: Title | Source | Date | Summary]
Task:
Write a [FORMAT] digest following this structure:
[Paste the selected template from references/output-template.md]
Rules:
- Every claim, statistic, and quote must come from the sources above
- Write in active voice, short sentences, contractions allowed
- Do not use: incredible, amazing, leveraging, game-changing, delve, groundbreaking, cutting-edge, revolutionize
- No em dashes, no semicolons, no hashtags
- Include [Source: Name](URL) attribution after each major claim
- Output plain text with HTML heading tags only (no markdown asterisks)Call Gemini with this prompt. Target model: gemini-2.0-flash or the latest available.
If the response contains any banned words or invented statistics not present in the source articles, regenerate with a stricter prompt.
Run every check before presenting. Fix violations first.
Fix all violations before presenting to the user.
Present the digest to the user in this order:
Ask: "Ready to publish to Ghost as a draft, or would you like to edit first?"
If GHOST_URL and GHOST_ADMIN_KEY are set and user confirms:
Run the publish script:
node /Users/ksd/Desktop/Varnan_skills/newsletter-digest/scripts/ghost-publish.js \
--title "DIGEST_TITLE" \
--status "draft"The script reads /tmp/newsletter-digest-output.json (written by the agent in Step 6) and posts to Ghost.
After posting, the script returns the Ghost admin URL for the draft. Present this to the user: "Draft saved at: [URL]. Review and publish from your Ghost dashboard."
If the user wants to publish immediately, pass --status "published" to the script.
If Ghost is not configured or user says "output only":
Output the digest in three formats:
Add: "Substack does not offer a public API. Copy the Markdown version into your Substack editor directly."
Substack has no public API. Programmatic posting is not possible without reverse-engineering internal endpoints, which violates their terms. The skill outputs a formatted Markdown digest ready to paste into the Substack editor. This is the correct approach.
© Varnan-Tech, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
SKILL.md and 9 other files (scripts, references) in skills/newsletter-digest of Varnan-Tech/opendirectory.
Open the folder on GitHubat commit 9bf5144
Newsletter Digest next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Newsletter Digest this skillVarnan-Tech/opendirectory | 674 | — | ~1.9k | Automated safety check: Pass | MIT | |
| Shakespeare Writing StudioZCZHAO-1999/shakespeare-writing-studio | 178 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Content Trend Researcheralirezarezvani/claude-code-skill-factory | 882 | 1 repos | ~2.1k | Automated safety check: Pass | MIT | |
| Serenity Replyleslieyeo/serenity-reply | 135 | — | ~3k | Automated safety check: Pass | MIT | |
| End-of-Article CTA Designersamber/cc-skills | 227 | — | ~3.1k | Automated safety check: Pass | MIT | |
| Idea Extractoraiskilloftheweek/claude-ai-skill-of-the-week | 149 | — | ~1.5k | Automated safety check: Pass | None |
ZCZHAO-1999/shakespeare-writing-studio
Produce publish-ready Chinese and English writing packages across WeChat articles, Medium/Substack essays, research notes, founder memos, op-eds, speeches, data storytelling, statistical graphics…
alirezarezvani/claude-code-skill-factory
Advanced content and topic research skill that analyzes trends across Google Analytics, Google Trends, Substack, Medium, Reddit, LinkedIn, X, blogs, podcasts, and YouTube to generate data-driven…
leslieyeo/serenity-reply
Serenity (@aleabitoreddit) 的思维框架与表达方式。基于 6 维度深度调研（1700+ 推文、Substack 长访谈、第三方分析、批评者观点）， 提炼 5 个核心心智模型、8 条决策启发式和完整的表达 DNA。
samber/cc-skills
Interviews you about objective, audience and context, then designs an end-of-article call to action with copy, placement, A/B test plan and accessibility check.
aiskilloftheweek/claude-ai-skill-of-the-week
Analyzes long-form content (transcripts, articles, interviews, webinars, podcast notes) and extracts the 3 best content ideas for any publishing platform — LinkedIn, Substack, blog, newsletter…
Abilityai/cornelius
Create long-form articles from knowledge base insights. An agent skill from Abilityai/cornelius.
Varnan-Tech/opendirectory
Creates professionally designed B2B SaaS e-books in HTML + CSS, exported as print-ready PDF.
Varnan-Tech/opendirectory
Generates and updates README.md and API reference docs by reading your codebase's functions, routes, types, schemas, and architecture.
Varnan-Tech/opendirectory
Generates data visualization charts (bar, line, area, pie, doughnut, scatter, radar, treemap) as PNG using Apache ECharts v6.
Varnan-Tech/opendirectory
Creates animated looping GIFs from CSS animations (default) or AI image-to-video.
Varnan-Tech/opendirectory
Given a product description, category keywords, or competitor names (any combination), searches Reddit, Hacker News, GitHub Issues, G2, and Google Trends for the real pains your market experiences…
Varnan-Tech/opendirectory
A skill your agent uses when fetching, searching, or analyzing transcripts from Lenny's Podcast, Dwarkesh Podcast, Cheeky Pint, 20VC, or A16z Podcast.
Works with
Categories
Aggregates RSS feeds from the past week, synthesizes the top stories using Gemini, and publishes a newsletter digest to Ghost CMS. Newsletter Digest is an agent skill from Varnan-Tech/opendirectory. Aggregates RSS feeds from the past week, synthesizes the top stories using Gemini, and publishes a newsletter digest to Ghost CMS.
Newsletter Digest fits situations like: asked to generate a newsletter; create a weekly digest; summarize RSS feeds; compile top stories for a newsletter.
Run `npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a claude-code`. Or copy the skill folder (skills/newsletter-digest in Varnan-Tech/opendirectory) into .claude/skills/newsletter-digest in your project. Claude Code loads it when a task matches its description.
Run `npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a codex`. Or copy the skill folder (skills/newsletter-digest in Varnan-Tech/opendirectory) into .agents/skills/newsletter-digest in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Varnan-Tech/opendirectory --skill newsletter-digest -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/newsletter-digest, .gemini/skills/newsletter-digest, .github/skills/newsletter-digest and .opencode/skills/newsletter-digest in your project.
Going by SKILL.md and its folder, Newsletter Digest needs JavaScript for the scripts in its folder, the command-line tools its instructions call (node and npm) and credentials named GEMINI_API_KEY and GHOST_ADMIN_KEY. Our summary lists: Node.js; A credential in GEMINI_API_KEY; A credential in GHOST_ADMIN_KEY.
SKILL.md names 1 domain. In commands or code: another.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
Newsletter Digest is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.9k tokens (SKILL.md is roughly 7.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.4k tokens, read only when the agent opens those files.
Skills that share tags, products or a category with Newsletter Digest: Shakespeare Writing Studio (ZCZHAO-1999/shakespeare-writing-studio, 178 stars), Content Trend Researcher (alirezarezvani/claude-code-skill-factory, 882 stars), Serenity Reply (leslieyeo/serenity-reply, 135 stars) and End-of-Article CTA Designer (samber/cc-skills, 227 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Varnan-Tech (a GitHub organization) maintains it in Varnan-Tech/opendirectory, which has 674 GitHub stars. The repository holds 61 skills in this directory. The repository was last updated on October 10, 2026.
Source: Varnan-Tech/opendirectory on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.
