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.
The validation criteria for PostHog Review, the bar for deciding whether a flagged PR issue is worth keeping.
OfficialCustom licenceAuto-check passed
Install Review Hog Validation Criteria
$ npx skills add PostHog/posthog --skill review-hog-validation-criteria -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install PostHog/posthog review-hog-validation-criteria --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/products/review_hog/skills/review-hog-validation-criteria .claude/skills/review-hog-validation-criteria && 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 "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .claude/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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/products/review_hog/skills/review-hog-validation-criteriaType 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 review-hog-validation-criteria -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install PostHog/posthog review-hog-validation-criteria --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/products/review_hog/skills/review-hog-validation-criteria .agents/skills/review-hog-validation-criteria && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .agents/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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 review-hog-validation-criteria -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install PostHog/posthog review-hog-validation-criteria --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/products/review_hog/skills/review-hog-validation-criteria .cursor/skills/review-hog-validation-criteria && 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 "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .cursor/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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 products/review_hog/skills/review-hog-validation-criteria--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 review-hog-validation-criteria -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install PostHog/posthog review-hog-validation-criteria --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/products/review_hog/skills/review-hog-validation-criteria .gemini/skills/review-hog-validation-criteria && 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 "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .gemini/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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 review-hog-validation-criteriaInstalls 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 review-hog-validation-criteria -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/products/review_hog/skills/review-hog-validation-criteria .github/skills/review-hog-validation-criteria && 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 "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .github/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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 review-hog-validation-criteria -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 review-hog-validation-criteria --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/products/review_hog/skills/review-hog-validation-criteria .opencode/skills/review-hog-validation-criteria && 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 "review-hog-validation-criteria" agent skill from https://github.com/PostHog/posthog/tree/master/products/review_hog/skills/review-hog-validation-criteria into .opencode/skills/review-hog-validation-criteria/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "review-hog-validation-criteria", 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
review-hog-validation-criteria- GitHub stars
- 40k
- Token cost
- ~1.1k tokens
- SKILL.md length
- 548 words
- Files
- 1
- Skills in repo
- 254
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
The validation criteria for PostHog Review, the bar for deciding whether a flagged PR issue is worth keeping.
- Works in 5 steps: Read the flagged file(s) and the code… → Trace whether the problem can actually… → Weigh real impact (who is affected, how… → …
- SKILL.md covers Keep an issue (is_valid =…, Drop an issue (is_valid =… and How to decide
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Review Hog Validation Criteria is an agent skill from PostHog/posthog, published by the product's own GitHub organization. The validation criteria for PostHog Review, the bar for deciding whether a flagged PR issue is worth keeping. Keeps real, user-affecting correctness / security / data-loss / contract / performance problems; drops overengineering, speculation, paranoia, never-gonna-happen edge cases, and style.
Its SKILL.md is about 1.1k 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…
Example prompts
- “/review-hog-validation-criteria”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Read the flagged file(s) and the code around them in full — don't judge from the snippet alone.
- Trace whether the problem can actually be reached: check call sites, types, validation, and how
- Weigh real impact (who is affected, how badly) against the bar above.
- On the fence → drop (precision over recall, as above).
- Record a focused argumentation that states the concrete reasoning for your verdict, and set
What it can do on your machine
Read from SKILL.md and the folder at commit c012c8d. 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.
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
Review Hog Validation Criteria loads about 1.1k tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 548 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 548 words (~1,061 tokens).
“You are the final judgment gate of a PR review. Earlier specialist perspectives flagged candidate issues; your job is to decide, for each one, whether it is worth surfacing to the author — not to re-review the PR or invent…”
- name
- review-hog-validation-criteria
- metadata.owner_team
- review_hog
- metadata.skill_type
- validation_criteria
Files
Just SKILL.md in products/review_hog/skills/review-hog-validation-criteria of PostHog/posthog.
Open the folder on GitHubat commit c012c8d
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 8, 2026.
Compare with similar skills
Review Hog Validation Criteria 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 |
|---|---|---|---|---|---|---|
| Review Hog Validation Criteria this skillPostHog/posthog | 40k | — | ~1.1k | 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 | 306 | — | ~2.4k | Automated safety check: Pass | MIT | |
| Compare Array Bundle SizePostHog/posthog-js | 634 | — | ~599 | Automated safety check: Pass | Custom licence |
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Questions about Review Hog Validation Criteria
What does Review Hog Validation Criteria do?
The validation criteria for PostHog Review, the bar for deciding whether a flagged PR issue is worth keeping. Review Hog Validation Criteria is an agent skill from PostHog/posthog, published by the product's own GitHub organization. The validation criteria for PostHog Review, the bar for deciding whether a flagged PR issue is worth keeping.
How do I install Review Hog Validation Criteria in Claude Code?
Run `npx skills add PostHog/posthog --skill review-hog-validation-criteria -a claude-code`. Or copy the skill folder (products/review_hog/skills/review-hog-validation-criteria in PostHog/posthog) into .claude/skills/review-hog-validation-criteria in your project. Claude Code loads it when a task matches its description.
How do I install Review Hog Validation Criteria in Codex?
Run `npx skills add PostHog/posthog --skill review-hog-validation-criteria -a codex`. Or copy the skill folder (products/review_hog/skills/review-hog-validation-criteria in PostHog/posthog) into .agents/skills/review-hog-validation-criteria in your project. Codex loads it when a task matches its description.
Can I use Review Hog Validation Criteria 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 review-hog-validation-criteria -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/review-hog-validation-criteria, .gemini/skills/review-hog-validation-criteria, .github/skills/review-hog-validation-criteria and .opencode/skills/review-hog-validation-criteria in your project.
What does Review Hog Validation Criteria need to run?
SKILL.md names no scripts, command-line tools or credentials: Review Hog Validation Criteria is instructions for the agent only.
Does Review Hog Validation Criteria 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 Review Hog Validation Criteria 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 Review Hog Validation Criteria use?
Review Hog Validation Criteria 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 Review Hog Validation Criteria use?
About 1.1k tokens (SKILL.md is roughly 4.2k 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 Review Hog Validation Criteria?
Skills that share tags, products or a category with Review Hog Validation Criteria: 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, 306 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Review Hog Validation Criteria?
PostHog (a GitHub organization, an official publisher) maintains it in PostHog/posthog, which has 40,209 GitHub stars. The repository holds 254 skills in this directory. The repository was last updated on October 10, 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.