Opik Analytics Instrumentation
comet-ml/opik
Shows how to add product analytics events to Opik's frontend, Java backend and Python SDK, all reporting through Segment to PostHog with an opik_ name prefix.
How to send real-time in-app notifications from PostHog backend code.
OfficialCustom licenceAuto-check passed
Install Sending Notifications
$ npx skills add PostHog/posthog --skill sending-notifications -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install PostHog/posthog sending-notifications --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/PostHog/posthog.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/sending-notifications .claude/skills/sending-notifications && 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 "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .claude/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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/PostHog/posthog/tree/master/.agents/skills/sending-notificationsType 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 PostHog/posthog --skill sending-notifications -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install PostHog/posthog sending-notifications --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/sending-notifications .agents/skills/sending-notifications && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .agents/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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 PostHog/posthog --skill sending-notifications -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install PostHog/posthog sending-notifications --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/sending-notifications .cursor/skills/sending-notifications && 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 "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .cursor/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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/PostHog/posthog.git --path .agents/skills/sending-notifications--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 PostHog/posthog --skill sending-notifications -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install PostHog/posthog sending-notifications --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/sending-notifications .gemini/skills/sending-notifications && 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 "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .gemini/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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 PostHog/posthog sending-notificationsInstalls 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 PostHog/posthog --skill sending-notifications -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/sending-notifications .github/skills/sending-notifications && 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 "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .github/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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 PostHog/posthog --skill sending-notifications -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install PostHog/posthog sending-notifications --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/sending-notifications .opencode/skills/sending-notifications && 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 "sending-notifications" agent skill from https://github.com/PostHog/posthog/tree/master/.agents/skills/sending-notifications into .opencode/skills/sending-notifications/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sending-notifications", 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
sending-notifications- GitHub stars
- 40k
- Token cost
- ~2k tokens
- SKILL.md length
- 514 words
- Files
- 1
- Skills in repo
- 252
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
How to send real-time in-app notifications from PostHog backend code.
- Works in 4 steps: Add enum value in… → Add icon mapping in… → Add a label + description entry in… → …
- Integrating notifications into a new feature
- SKILL.md covers When to use this, The facade API, NotificationData fields and Choosing parameters, plus 3 more sections
- Calls python
What it does
Sending Notifications is an agent skill from PostHog/posthog, published by the product's own GitHub organization. How to send real-time in-app notifications from PostHog backend code. Use when integrating notifications into a new feature, wiring up a notification source (alerts, comments, approvals, pipelines, issues), or choosing the right target type and priority for a notification.
Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with PostHog. The repository describes itself as: :hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI observability, analytics, session replay, flags, experiments, error…
When your agent uses it
- Integrating notifications into a new feature
- Wiring up a notification source (alerts
- Choosing the right target type and priority for a notification
Example prompts
- “/sending-notifications”
Requirements
- Python 3
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Add enum value in products/notifications/backend/facade/enums.py
- Add icon mapping in frontend/src/lib/components/NotificationsMenu/notificationToasts.tsx (NOTIFICATION_TYPE_ICONS) — the single icon…
- Add a label + description entry in frontend/src/lib/components/NotificationsMenu/NotificationRow.tsx (REALTIME_NOTIFICATION_TYPE_META)…
- Run python manage.py makemigrations notifications
What it can do on your machine
Read from SKILL.md and the folder at commit 10f9ad7. 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
Shell commands in SKILL.md call:
python
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
Sending Notifications loads about 2k tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 514 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 514 words (~1,951 tokens).
“You're adding notification support to a PostHog feature — for example, notifying a user when they're mentioned in a comment, when an alert fires, or when an approval is requested.”
- name
- sending-notifications
Files
Just SKILL.md in .agents/skills/sending-notifications of PostHog/posthog.
Open the folder on GitHubat commit 10f9ad7
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in PostHog/posthog, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Sending Notifications 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 |
|---|---|---|---|---|---|---|
| Sending Notifications this skillPostHog/posthog | 40k | — | ~2k | Automated safety check: Pass | Custom licence | |
| Opik Analytics Instrumentationcomet-ml/opik | 22k | — | ~4.4k | Automated safety check: Pass | Apache-2.0 | |
| C15tc15t/c15t | 1.9k | 1 repos | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| Define Feature Flagmacro-inc/macro | 4.6k | — | ~780 | Automated safety check: Pass | AGPL-3.0 | |
| Soku CLIAbout-Intelligence/soku-cli | 304 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Compare Array Bundle SizePostHog/posthog-js | 613 | — | ~599 | Automated safety check: Pass | Custom licence |
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Questions about Sending Notifications
What does Sending Notifications do?
How to send real-time in-app notifications from PostHog backend code. Sending Notifications is an agent skill from PostHog/posthog, published by the product's own GitHub organization. How to send real-time in-app notifications from PostHog backend code.
When should I use Sending Notifications?
Sending Notifications fits situations like: integrating notifications into a new feature; wiring up a notification source (alerts; choosing the right target type and priority for a notification.
How do I install Sending Notifications in Claude Code?
Run `npx skills add PostHog/posthog --skill sending-notifications -a claude-code`. Or copy the skill folder (.agents/skills/sending-notifications in PostHog/posthog) into .claude/skills/sending-notifications in your project. Claude Code loads it when a task matches its description.
How do I install Sending Notifications in Codex?
Run `npx skills add PostHog/posthog --skill sending-notifications -a codex`. Or copy the skill folder (.agents/skills/sending-notifications in PostHog/posthog) into .agents/skills/sending-notifications in your project. Codex loads it when a task matches its description.
Can I use Sending Notifications 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 PostHog/posthog --skill sending-notifications -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sending-notifications, .gemini/skills/sending-notifications, .github/skills/sending-notifications and .opencode/skills/sending-notifications in your project.
What does Sending Notifications need to run?
Going by SKILL.md and its folder, Sending Notifications needs the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Sending Notifications 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 Sending Notifications 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 Sending Notifications use?
Sending Notifications has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Sending Notifications use?
About 2k tokens (SKILL.md is roughly 7.8k 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 Sending Notifications?
Skills that share tags, products or a category with Sending Notifications: Opik Analytics Instrumentation (comet-ml/opik, 22k stars), C15t (c15t/c15t, 1.9k stars), Define Feature Flag (macro-inc/macro, 4.6k stars) and Soku CLI (About-Intelligence/soku-cli, 304 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sending Notifications?
PostHog (a GitHub organization, an official publisher) maintains it in PostHog/posthog, which has 40,182 GitHub stars. The repository holds 252 skills in this directory. The repository was last updated on October 8, 2026.
Source: PostHog/posthog on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.