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Official agent skill

Signals Scout Experiments

by PostHog in PostHog/posthog

Signals scout for PostHog A/B experiments. An agent skill from PostHog/posthog.

OfficialCustom licenceAuto-check passed

Install Signals Scout Experiments

skills CLI
$ npx skills add PostHog/posthog --skill signals-scout-experiments -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install PostHog/posthog signals-scout-experiments --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/PostHog/posthog.git skills-src && mkdir -p .claude/skills && cp -r skills-src/products/signals/skills/signals-scout-experiments .claude/skills/signals-scout-experiments && rm -rf skills-src

Use ~/.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/

Facts

Skill name
signals-scout-experiments
GitHub stars
40k
Token cost
~8k tokens
SKILL.md length
3,832 words
Files
1
Skills in repo
252
Repo updated
First seen
Licence
Custom licence

At a glance

Signals scout for PostHog A/B experiments. An agent skill from PostHog/posthog.

  • Works in 2 steps: Validity threats on running experiments… → Lifecycle drift — experiments running…
  • SKILL.md covers Activity-history availability, Quick close-out: are…, How a run works and Disqualifiers (skip these), plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Signals Scout Experiments is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Signals scout for PostHog A/B experiments. Watches running experiments for validity threats — sample ratio mismatch, contamination, exposure stalls, mid-run flag mutations — and lifecycle drift.

Its SKILL.md is about 8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: PostHog Signals agent (Claude sandbox). Read-only analytics + signalscoutinternal:write (scratchpad) + signalscoutreport:write (report channel), plus the…

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

  • “Use the signals-scout-experiments skill to signal scout for PostHog A/B experiments. An agent skill from PostHog/posthog”
  • “/signals-scout-experiments”

Requirements

  • Compatibility (from SKILL.md): PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus the experiments, feature-flag, and analytics tools in the MCP tools section.

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

  1. Validity threats on running experiments — sample ratio mismatch (SRM), elevated $multiple contamination, exposure stalls, mid-run flag…
  2. Lifecycle drift — experiments running long past their useful life, experiments with a clear sustained answer still collecting data, ended…

What it can do on your machine

Read from SKILL.md and the folder at commit 812e5c6. 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 sql).

    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.

  • Compatibility

    PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus the experiments, feature-flag, and analytics tools in the MCP tools section.

    From compatibility in the SKILL.md frontmatter.

Context cost

Signals Scout Experiments loads about 8k tokens when it runs. Until then it costs about 55 tokens; SKILL.md has 3,832 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~55
When it runs · the whole SKILL.md, loaded when a task matches
~8k

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 3,832 words (~7,970 tokens).

“You are a focused experiments scout. An experiment's configuration is a set of promises — "this is running", "traffic splits 50/50", "the flag is active", "we'll decide when the data is in" — and your job is to catch the…”

— opening of SKILL.md by PostHog, Custom licence
name
signals-scout-experiments
compatibility
PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus the experiments, feature-flag, and analytics tools in the MCP tools section.
scout-display-name
Experiments
metadata.owner_team
signals
metadata.scope
experiments

Read the full SKILL.md on GitHub

Files

Just SKILL.md in products/signals/skills/signals-scout-experiments of PostHog/posthog.

Open the folder on GitHubat commit 812e5c6

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

Signals Scout Experiments 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.

Signals Scout Experiments compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Signals Scout Experiments this skillPostHog/posthog40k—~8kAutomated safety check: PassCustom licence
Opik Analytics Instrumentationcomet-ml/opik22k—~4.4kAutomated safety check: PassApache-2.0
C15tc15t/c15t1.9k1 repos~1.6kAutomated safety check: PassApache-2.0
Define Feature Flagmacro-inc/macro4.6k—~780Automated safety check: PassAGPL-3.0
Soku CLIAbout-Intelligence/soku-cli305—~2.4kAutomated safety check: PassMIT
Compare Array Bundle SizePostHog/posthog-js628—~599Automated safety check: PassCustom licence

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Works with

Questions about Signals Scout Experiments

What does Signals Scout Experiments do?

Signals scout for PostHog A/B experiments. An agent skill from PostHog/posthog. Signals Scout Experiments is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Signals scout for PostHog A/B experiments.

How do I install Signals Scout Experiments in Claude Code?

Run `npx skills add PostHog/posthog --skill signals-scout-experiments -a claude-code`. Or copy the skill folder (products/signals/skills/signals-scout-experiments in PostHog/posthog) into .claude/skills/signals-scout-experiments in your project. Claude Code loads it when a task matches its description.

How do I install Signals Scout Experiments in Codex?

Run `npx skills add PostHog/posthog --skill signals-scout-experiments -a codex`. Or copy the skill folder (products/signals/skills/signals-scout-experiments in PostHog/posthog) into .agents/skills/signals-scout-experiments in your project. Codex loads it when a task matches its description.

Can I use Signals Scout Experiments 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 signals-scout-experiments -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/signals-scout-experiments, .gemini/skills/signals-scout-experiments, .github/skills/signals-scout-experiments and .opencode/skills/signals-scout-experiments in your project.

What does Signals Scout Experiments need to run?

SKILL.md names no scripts, command-line tools or credentials: Signals Scout Experiments is instructions for the agent only. Compatibility (from SKILL.md): PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus the experiments, feature-flag, and analytics tools in the MCP tools section. .

Does Signals Scout Experiments 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 Signals Scout Experiments 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 Signals Scout Experiments use?

Signals Scout Experiments 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 Signals Scout Experiments use?

About 8k tokens (SKILL.md is roughly 32k 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 Signals Scout Experiments?

Skills that share tags, products or a category with Signals Scout Experiments: 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, 305 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Signals Scout Experiments?

PostHog (a GitHub organization, an official publisher) maintains it in PostHog/posthog, which has 40,200 GitHub stars. The repository holds 252 skills in this directory. The repository was last updated on October 9, 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.