Internal Communications Writer
anthropics/skills
A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill…
Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities.
Install Sponsored Newsletter Finder
$ npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install gooseworks-ai/goose-skills sponsored-newsletter-finder --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/gooseworks-ai/goose-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .claude/skills/sponsored-newsletter-finder && 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 "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .claude/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finderType 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 gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install gooseworks-ai/goose-skills sponsored-newsletter-finder --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .agents/skills/sponsored-newsletter-finder && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .agents/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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 gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install gooseworks-ai/goose-skills sponsored-newsletter-finder --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .cursor/skills/sponsored-newsletter-finder && 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 "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .cursor/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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/gooseworks-ai/goose-skills.git --path skills/ads/composites/sponsored-newsletter-finder--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 gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install gooseworks-ai/goose-skills sponsored-newsletter-finder --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .gemini/skills/sponsored-newsletter-finder && 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 "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .gemini/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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 gooseworks-ai/goose-skills sponsored-newsletter-finderInstalls 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 gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .github/skills/sponsored-newsletter-finder && 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 "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .github/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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 gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install gooseworks-ai/goose-skills sponsored-newsletter-finder --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/gooseworks-ai/goose-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/ads/composites/sponsored-newsletter-finder .opencode/skills/sponsored-newsletter-finder && 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 "sponsored-newsletter-finder" agent skill from https://github.com/gooseworks-ai/goose-skills/tree/main/skills/ads/composites/sponsored-newsletter-finder into .opencode/skills/sponsored-newsletter-finder/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sponsored-newsletter-finder", 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.
Facts
- Skill name
sponsored-newsletter-finder- GitHub stars
- 1.2k
- Used in
- 1 other repo
- Token cost
- ~1.7k tokens
- SKILL.md length
- 477 words
- Files
- 2
- Skills in repo
- 273
- Repo updated
- First seen
- Licence
- MIT
At a glance
Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities.
- Works in 5 steps: Intake → Discovery via Web Search → Evaluate Each Newsletter → …
- A marketing team wants to reach an existing engaged audience for less than the cost of building their own
- SKILL.md covers When to Use, Phase 0: Intake, Phase 1: Discovery via Web… and Phase 2: Evaluate Each…, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Sponsored Newsletter Finder is an agent skill from gooseworks-ai/goose-skills. Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities. Uses web search to find newsletters, then scores each against ICP alignment criteria. Use when a marketing team wants to reach an existing engaged audience for less than the cost of building their own, or when testing a new channel before committing.
Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `skill.meta.json`).
It sits in Writing & Content, covering Newsletters. The repository describes itself as: Library of Growth & GTM skills + data APIs for Claude Code, Codex, Cursor to run ads, social, content, lead gen, seo and data scraping. The licence is MIT.
When your agent uses it
- A marketing team wants to reach an existing engaged audience for less than the cost of building their own
- Testing a new channel before committing
Example prompts
- “/sponsored-newsletter-finder”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit c650c6d. It shows what the files ask for, not the result of running them.
Tool permissions
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.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Sponsored Newsletter Finder loads about 1.7k tokens when it runs. Until then it costs about 112 tokens; SKILL.md has 477 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.
Safety
Auto-check passed
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); files beside SKILL.md are not scanned.
SKILL.md
The full file from gooseworks-ai/goose-skills at commit c650c6d, republished under its MIT licence (© gooseworks-ai). 477 words, ~1,718 tokens.
Download SKILL.mdSave it as
.claude/skills/sponsored-newsletter-finder/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- sponsored-newsletter-finder
- description
- Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities. Uses web search to find newsletters, then scores each against ICP alignment criteria. Use when a marketing team wants to reach an existing engaged audience for less than the cost of building their own, or when testing a new channel before committing.
- tags
- ads
Sponsored Newsletter Finder
Find newsletters your ICP reads, evaluate their audience fit, and produce a ranked shortlist ready for outreach. Cheaper and faster than building your own list from scratch — newsletters already have the trust and the audience.
Best for: Seed/Series A teams with $500-5,000/month to test a paid distribution channel. Not for companies without budget or companies targeting a mass-market ICP.
When to Use
- "Find newsletters I can sponsor to reach [ICP]"
- "What newsletters does my target audience read?"
- "I want to test newsletter sponsorship — where should I start?"
- "Give me a ranked list of newsletters for [industry/role]"
Phase 0: Intake
- ICP definition — Target title, industry, company stage (e.g., "VP of Sales at Series A-C B2B SaaS companies")
- Monthly budget — Rough range for sponsorships (e.g., "$1,000-3,000/month")
- Geography — US only, global, or specific region?
- Campaign goal — Awareness (brand mention) or direct response (signup/demo)?
- Any newsletters you're already subscribed to or know about in this space? (Seeds the search)
Phase 1: Discovery via Web Search
Search for newsletters using multiple angles:
Search Queries to Run
"[ICP industry] newsletter" sponsorship
"[ICP role] newsletter" site:substack.com OR site:beehiiv.com
"best newsletters for [ICP role/industry]"
"[ICP industry] newsletter" "advertise" OR "sponsor"
"[competitor company] newsletter sponsorship" (find where competitors are already advertising)
newsletter directory "[ICP industry]"Also search curated newsletter directories:
newsletter.directoryfor category browsingpaved.comfor sponsorship marketplace listingsswapstack.cofor newsletter ad networksparkloop.cofor referral partnerships
Collect: newsletter name, URL, estimated subscribers, topics covered, sponsorship page URL if found.
Phase 2: Evaluate Each Newsletter
For each discovered newsletter, score across 5 dimensions (1-5 each):
Scoring Criteria
| Dimension | 1 | 3 | 5 |
|---|---|---|---|
| Audience match | Unrelated audience | Partial overlap | Direct ICP match |
| Reach | <1,000 subscribers | 5,000-20,000 | 20,000+ |
| Engagement | No open rate data | ~30-40% open rate | 40%+ open rate |
| Niche specificity | Generic business newsletter | Industry newsletter | Role-specific newsletter |
| Sponsor accessibility | No sponsor info found | Inquiry required | Clear pricing / marketplace listing |
Total score: /25. Shortlist newsletters scoring ≥ 15.
Show full SKILL.md (188 more words)Show less
Data Points to Find for Each Newsletter
Search for:
- Subscriber count (often on the "About" or "Advertise" page)
- Open rate (sometimes disclosed, often ~40-50% for niche newsletters)
- CPM or flat sponsorship rate
- Audience demographics (if disclosed)
- Past sponsors (who's already buying? = validation)
- Send frequency (weekly, daily, etc.)
For newsletters with no pricing page, estimate CPM from industry benchmarks:
- Micro (<5k subs): $50-150 flat rate
- Small (5k-20k subs): $100-500 flat rate
- Mid (20k-50k subs): $500-2,000 flat rate
- Large (50k+ subs): $1,000-10,000 flat rate
Phase 3: Competitive Intelligence
Check if known competitors are sponsoring newsletters in this space:
Search: "[competitor name]" "sponsored by" newsletter
Search: "[competitor name]" advertisement site:substack.comIf a competitor is sponsoring a newsletter, it's validated audience fit — flag it as high priority.
Phase 4: Output Format
# Newsletter Sponsorship Shortlist — [DATE]
ICP: [description] | Budget: [range] | Goal: [awareness/direct response]
---
## Tier 1 — High Priority (Score 20-25)
### 1. [Newsletter Name]
- **URL:** [url]
- **Subscribers:** [N] (~[source])
- **Open rate:** [X%] (disclosed/estimated)
- **Audience:** [description]
- **Send frequency:** [weekly/daily/etc]
- **Sponsorship type:** [dedicated / classified / banner mention]
- **Estimated cost:** $[X] per send
- **Estimated CPM:** $[X]
- **Past sponsors:** [list — competitive validation]
- **Score:** [X/25]
- **Fit rationale:** [1-2 sentences on why this is a strong match]
- **Sponsor page:** [url or "inquiry required"]
### 2. [Newsletter Name]
...
---
## Tier 2 — Worth Testing (Score 15-19)
### 1. [Newsletter Name]
...
---
## Tier 3 — Watchlist (Score 10-14)
(Monitor these — audience fit is good but reach or accessibility is limited)
---
## Where Competitors Are Already Advertising
| Newsletter | Competitor | Notes |
|-----------|-----------|-------|
| [Name] | [Competitor] | Validated ICP match |
...
---
## Budget Allocation Recommendation
Given budget of [X]/month and campaign goal of [goal]:
| Newsletter | Send frequency | Cost per send | Sends/month | Monthly cost |
|-----------|---------------|--------------|-------------|-------------|
| [Name] | Weekly | $[X] | 4 | $[X] |
| [Name] | Bi-weekly | $[X] | 2 | $[X] |
| **Total** | | | | $[X] |
**Recommended test:** Start with [Newsletter 1] for 2 sends to validate conversion rate before expanding.
---
## Outreach Templates
### Cold outreach to newsletter with no sponsor page:
Subject: Sponsoring [Newsletter Name] — [Your Company]
> Hi [Name],
>
> I'm [Name] from [Company] — we [one-line pitch]. We're fans of [Newsletter Name] and think our audience overlap is strong: [ICP match rationale].
>
> Would you be open to a sponsored mention or dedicated send? Happy to share what we're looking for and see if it's a fit.
>
> [Name]
### Request for media kit:
> Hi [Name] — big fan of [Newsletter Name]. Could you share your media kit and current sponsorship rates? [Your Company] is evaluating newsletter partnerships for Q[X].Save to newsletter-sponsors-[YYYY-MM-DD].md in the current working directory (or user-specified path).
Cost
| Component | Cost |
|---|---|
| Web search (discovery phase) | Free |
| All analysis and scoring | Free (LLM reasoning) |
| Total | Free |
Tools Required
- web_search — for newsletter discovery and verification
- No API keys required
Trigger Phrases
- "Find newsletters I can sponsor to reach [ICP]"
- "What newsletters does [title/industry] read?"
- "Run newsletter sponsorship research for [client]"
- "I want to test paid newsletter distribution — where should I start?"
© gooseworks-ai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/ads/composites/sponsored-newsletter-finder of gooseworks-ai/goose-skills.
- SKILL.md
- skill.meta.json
Open the folder on GitHubat commit c650c6d
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in gooseworks-ai/goose-skills, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Sponsored Newsletter Finder 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 |
|---|---|---|---|---|---|---|
| Sponsored Newsletter Finder this skillgooseworks-ai/goose-skills | 1.2k | 1 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Internal Communications Writeranthropics/skills | 180k | 38 repos | ~378 | Automated safety check: Pass | Apache-2.0 | |
| Clarityaddyosmani/clarity | 269 | 1 repos | ~1.9k | Automated safety check: Pass | MIT | |
| News Aggregator Skillcclank/news-aggregator-skill | 1.3k | — | ~2.1k | Automated safety check: Pass | None | |
| Changelog Social RecapFlorianBruniaux/claude-code-ultimate-guide | 6.1k | — | ~1.8k | Automated safety check: Notes | CC-BY-SA-4.0 | |
| Newsletter Voicecharlie947/social-media-skills | 3.8k | — | ~2.5k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Sponsored Newsletter Finder
What does Sponsored Newsletter Finder do?
Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities. Sponsored Newsletter Finder is an agent skill from gooseworks-ai/goose-skills. Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities.
When should I use Sponsored Newsletter Finder?
Sponsored Newsletter Finder fits situations like: A marketing team wants to reach an existing engaged audience for less than the cost of building their own; testing a new channel before committing.
How do I install Sponsored Newsletter Finder in Claude Code?
Run `npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a claude-code`. Or copy the skill folder (skills/ads/composites/sponsored-newsletter-finder in gooseworks-ai/goose-skills) into .claude/skills/sponsored-newsletter-finder in your project. Claude Code loads it when a task matches its description.
How do I install Sponsored Newsletter Finder in Codex?
Run `npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a codex`. Or copy the skill folder (skills/ads/composites/sponsored-newsletter-finder in gooseworks-ai/goose-skills) into .agents/skills/sponsored-newsletter-finder in your project. Codex loads it when a task matches its description.
Can I use Sponsored Newsletter Finder in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sponsored-newsletter-finder, .gemini/skills/sponsored-newsletter-finder, .github/skills/sponsored-newsletter-finder and .opencode/skills/sponsored-newsletter-finder in your project.
What does Sponsored Newsletter Finder need to run?
SKILL.md names no scripts, command-line tools or credentials: Sponsored Newsletter Finder is instructions for the agent only.
Does Sponsored Newsletter Finder access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Sponsored Newsletter Finder safe to install?
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. Review the folder before installing.
What licence does Sponsored Newsletter Finder use?
Sponsored Newsletter Finder is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Sponsored Newsletter Finder use?
About 1.7k tokens (SKILL.md is roughly 6.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Sponsored Newsletter Finder?
Skills that share tags, products or a category with Sponsored Newsletter Finder: Internal Communications Writer (anthropics/skills, 180k stars), Clarity (addyosmani/clarity, 269 stars), News Aggregator Skill (cclank/news-aggregator-skill, 1.3k stars) and Changelog Social Recap (FlorianBruniaux/claude-code-ultimate-guide, 6.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sponsored Newsletter Finder?
gooseworks-ai (a GitHub organization) maintains it in gooseworks-ai/goose-skills, which has 1,240 GitHub stars. The repository holds 273 skills in this directory. The repository was last updated on October 8, 2026.
Source: gooseworks-ai/goose-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.