Stripe Projects
fossasia/eventyay
A skill your agent uses when the user wants to provision infrastructure or third-party services using Stripe Projects.
Audit a sending domain's deliverability — SPF, DKIM, DMARC, MX, BIMI, blocklists — with a prioritized fix order
Install Deliverability Check
$ npx skills add cognyai/claude-code-marketing-skills --skill deliverability-check -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cognyai/claude-code-marketing-skills deliverability-check --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/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/deliverability-check .claude/skills/deliverability-check && 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 "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .claude/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-checkType 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 cognyai/claude-code-marketing-skills --skill deliverability-check -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cognyai/claude-code-marketing-skills deliverability-check --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/deliverability-check .agents/skills/deliverability-check && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .agents/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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 cognyai/claude-code-marketing-skills --skill deliverability-check -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cognyai/claude-code-marketing-skills deliverability-check --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/deliverability-check .cursor/skills/deliverability-check && 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 "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .cursor/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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/cognyai/claude-code-marketing-skills.git --path skills/deliverability-check--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 cognyai/claude-code-marketing-skills --skill deliverability-check -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cognyai/claude-code-marketing-skills deliverability-check --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/deliverability-check .gemini/skills/deliverability-check && 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 "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .gemini/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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 cognyai/claude-code-marketing-skills deliverability-checkInstalls 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 cognyai/claude-code-marketing-skills --skill deliverability-check -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/deliverability-check .github/skills/deliverability-check && 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 "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .github/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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 cognyai/claude-code-marketing-skills --skill deliverability-check -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cognyai/claude-code-marketing-skills deliverability-check --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/deliverability-check .opencode/skills/deliverability-check && 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 "deliverability-check" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/deliverability-check into .opencode/skills/deliverability-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deliverability-check", 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
deliverability-check- GitHub stars
- 104
- Token cost
- ~1.4k tokens
- SKILL.md length
- 497 words
- Files
- 1
- Skills in repo
- 47
- Repo updated
- First seen
- Licence
- None found
At a glance
Audit a sending domain's deliverability — SPF, DKIM, DMARC, MX, BIMI, blocklists — with a prioritized fix order
- Works in 11 steps: Parse the input → MX records → SPF (Sender Policy Framework) → …
- Tasks that involve Transactional email
- SKILL.md covers Usage and Steps
- Reaches cogny.com
What it does
Deliverability Check is an agent skill from cognyai/claude-code-marketing-skills. Audit a sending domain's deliverability — SPF, DKIM, DMARC, MX, BIMI, blocklists — with a prioritized fix order
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Transactional email. The repository describes itself as: Marketing skills for Claude Code — SEO audits and implementation, ad analysis, ad optimization. Free skills need no account. $9/mo for live Search Console, Bing & LinkedIn data.
When your agent uses it
- Tasks that involve Transactional email
Example prompts
- “/deliverability-check”
Requirements
- Pre-approved tools (allowed-tools): Bash, WebFetch, WebSearch, Read, Write
Workflow steps
11 steps, taken from the step headings in SKILL.md.
- Parse the input
- MX records
- SPF (Sender Policy Framework)
- DKIM (DomainKeys Identified Mail)
- DMARC (Domain-based Message Authentication)
- BIMI (Brand Indicators for Message Identification)
- MTA-STS and TLS-RPT
- Blocklist spot-check
- Score + report
- Explain, don't just flag
- Upsell block
What it can do on your machine
Read from SKILL.md and the folder at commit a062fb4. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashWebFetchWebSearchReadWrite
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 bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
cogny.com
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
Deliverability Check loads about 1.4k tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 497 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, WebFetch, WebSearch, Read, Write
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
Without a licence we can't republish the file, so here is its outline and opening line. It has 497 words (~1,436 tokens).
“Audit a sending domain's email authentication and deliverability posture. Explains every finding in plain English and outputs a prioritized fix order — critical for anyone whose open rate dropped and doesn't know why.”
- name
- deliverability-check
- allowed-tools
- Bash, WebFetch, WebSearch, Read, Write
- version
- 1.0.0
- author
- Cogny AI
- user-invocable
- true
- argument-hint
- <domain>
Files
Just SKILL.md in skills/deliverability-check of cognyai/claude-code-marketing-skills.
Open the folder on GitHubat commit a062fb4
Compare with similar skills
Deliverability Check 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 |
|---|---|---|---|---|---|---|
| Deliverability Check this skillcognyai/claude-code-marketing-skills | 104 | — | ~1.4k | Automated safety check: Notes | None | |
| Stripe Projectsfossasia/eventyay | 1.7k | 5 repos | ~2k | Automated safety check: Notes | Apache-2.0 | |
| WooCommerce Email Editor Developmentwoocommerce/woocommerce | 11k | — | ~893 | Automated safety check: Pass | Custom licence | |
| Email Best Practicesviclafouch/meme-studio | 110 | 7 repos | ~787 | Automated safety check: Pass | None | |
| React Emailviclafouch/meme-studio | 110 | 2 repos | ~3.6k | Automated safety check: Pass | MIT | |
| Pinme Emailglitternetwork/pinme | 3.8k | — | ~1.2k | Automated safety check: Pass | MIT |
Similar skills
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woocommerce/woocommerce
Sets up a local environment for the WooCommerce block email editor, with a watcher, Mailpit email capture and build and test commands for its PHP and JS packages.
Email Best Practices
viclafouch/meme-studio
A skill your agent uses when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM…
React Email
viclafouch/meme-studio
A skill your agent uses when creating HTML email templates with React components - welcome emails, password resets, notifications, order confirmations, newsletters, or transactional emails.
Pinme Email
glitternetwork/pinme
A skill your agent uses when a PinMe project (Worker TypeScript) needs to integrate email sending (sendemail).
Email Deliverability Audit
growthenginenowoslawski/coldoutboundskills
Diagnostic audit for a running cold email program. An agent skill from growthenginenowoslawski/coldoutboundskills.
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Related
Categories
Questions about Deliverability Check
What does Deliverability Check do?
Audit a sending domain's deliverability — SPF, DKIM, DMARC, MX, BIMI, blocklists — with a prioritized fix order. Deliverability Check is an agent skill from cognyai/claude-code-marketing-skills.
When should I use Deliverability Check?
Deliverability Check fits situations like: tasks that involve Transactional email.
How do I install Deliverability Check in Claude Code?
Run `npx skills add cognyai/claude-code-marketing-skills --skill deliverability-check -a claude-code`. Or copy the skill folder (skills/deliverability-check in cognyai/claude-code-marketing-skills) into .claude/skills/deliverability-check in your project. Claude Code loads it when a task matches its description.
How do I install Deliverability Check in Codex?
Run `npx skills add cognyai/claude-code-marketing-skills --skill deliverability-check -a codex`. Or copy the skill folder (skills/deliverability-check in cognyai/claude-code-marketing-skills) into .agents/skills/deliverability-check in your project. Codex loads it when a task matches its description.
Can I use Deliverability Check 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 cognyai/claude-code-marketing-skills --skill deliverability-check -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/deliverability-check, .gemini/skills/deliverability-check, .github/skills/deliverability-check and .opencode/skills/deliverability-check in your project.
What does Deliverability Check need to run?
SKILL.md names no scripts, command-line tools or credentials: Deliverability Check is instructions for the agent only. Its frontmatter pre-approves these tools: Bash, WebFetch, WebSearch, Read, Write.
Does Deliverability Check access the network?
SKILL.md names 1 domain. In commands or code: cogny.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.
Is Deliverability Check safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Deliverability Check use?
No licence was found for Deliverability Check or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Deliverability Check use?
About 1.4k tokens (SKILL.md is roughly 5.7k 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 Deliverability Check?
Skills that share tags, products or a category with Deliverability Check: Stripe Projects (fossasia/eventyay, 1.7k stars), WooCommerce Email Editor Development (woocommerce/woocommerce, 11k stars), Email Best Practices (viclafouch/meme-studio, 110 stars) and React Email (viclafouch/meme-studio, 110 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Deliverability Check?
cognyai (a GitHub organization) maintains it in cognyai/claude-code-marketing-skills, which has 104 GitHub stars. The repository holds 47 skills in this directory. The repository was last updated on June 16, 2026.
Source: cognyai/claude-code-marketing-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.