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Official agent skill

Signals Scout Inbox Validation

by PostHog in PostHog/posthog

Follow-up Signals scout for the inbox itself. An agent skill from PostHog/posthog.

OfficialCustom licenceAuto-check passedProductivity & Automation

Install Signals Scout Inbox Validation

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

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

GitHub CLI
$ gh skill install PostHog/posthog signals-scout-inbox-validation --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-inbox-validation .claude/skills/signals-scout-inbox-validation && 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-inbox-validation
GitHub stars
40k
Token cost
~8.7k tokens
SKILL.md length
4,745 words
Files
1
Skills in repo
254
Repo updated
First seen
Licence
Custom licence

At a glance

Follow-up Signals scout for the inbox itself. An agent skill from PostHog/posthog.

  • Works in 5 steps: inbox-reports-retrieve {id} — full… → scout-report-check-list {report_id} —… → Work out what must stay true, from the… → …
  • Tasks that involve Email management
  • SKILL.md covers When this run was dispatched…, Quick close-out: is there…, How a run works and Disqualifiers (skip these), plus 2 more sections
  • Reaches api.github.com

What it does

Signals Scout Inbox Validation is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Follow-up Signals scout for the inbox itself. Attaches a check to each newly resolved report, spot-checks a couple of settled fixes with fresh probes, answers the checks it is dispatched for, and reports when a fix didn't hold, plus a gated escalation check on dismissed reports.

Its SKILL.md is about 8.7k 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…

It sits in Productivity & Automation, covering Email management. 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

  • Tasks that involve Email management

Example prompts

  • “/signals-scout-inbox-validation”

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 inbox-reports-list / inbox-reports-retrieve / scout-report-check-create / scout-report-check-list, execute-sql (document_embeddings + events), and whatever surface tools the report's source products need for re-probes (e.g. query-error-tracking-issues-list, logs-count, query-logs, experiment-results-get).

Workflow steps

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

  1. inbox-reports-retrieve {id} — full title, summary, metrics, and pull_requests (inspect every entry with state merged; a resolved report…
  2. scout-report-check-list {report_id} — skip the report when an active check already covers the same expectation. The research pipeline…
  3. Work out what must stay true, from the report's metrics and its contributing signals — they carry the concrete entities the report was about
  4. Measure the pre-fix baseline now, over a window the same length as the soak you pick in step 5, ending at the merge. A check without a…
  5. scout-report-check-create on the report

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 (its code samples are sql).

    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:

    • api.github.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.

  • Compatibility

    PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus inbox-reports-list / inbox-reports-retrieve / scout-report-check-create / scout-report-check-list, execute-sql (document_embeddings + events), and whatever surface tools the report's source products need for re-probes (e.g. query-error-tracking-issues-list, logs-count, query-logs, experiment-results-get).

    From compatibility in the SKILL.md frontmatter.

Context cost

Signals Scout Inbox Validation loads about 8.7k tokens when it runs. Until then it costs about 78 tokens; SKILL.md has 4,745 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~78
When it runs · the whole SKILL.md, loaded when a task matches
~8.7k

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 4,745 words (~8,658 tokens).

“You are the fleet's follow-up scout. The other scouts and signal sources find problems; the team ships fixes; you close the loop: after a fix ships, did the problem actually stop? Your watched surface is the inbox itself — reports…”

— opening of SKILL.md by PostHog, Custom licence
name
signals-scout-inbox-validation
compatibility
PostHog Signals agent (Claude sandbox). Read-only analytics + signal_scout_internal:write (scratchpad) + signal_scout_report:write (report channel), plus inbox-reports-list / inbox-reports-retrieve / scout-report-check-create / scout-report-check-list, execute-sql (document_embeddings + events), and whatever surface tools the report's source products need for re-probes (e.g. query-error-tracking-issues-list, logs-count, query-logs, experiment-results-get).
scout-display-name
Inbox validation
scout-role
operational
metadata.owner_team
signals
metadata.scope
inbox_validation

Read the full SKILL.md on GitHub

Files

Just SKILL.md in products/signals/skills/signals-scout-inbox-validation 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

Signals Scout Inbox Validation 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 Inbox Validation compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Signals Scout Inbox Validation this skillPostHog/posthog40k—~8.7kAutomated safety check: PassCustom licence
Garden Inboxpaperclipai/paperclip100k—~1.1kAutomated safety check: PassMIT
Continuetelegramdesktop/tdesktop33k2 repos~9.4kAutomated safety check: PassGPL-3.0
Process Inboxtelegramdesktop/tdesktop33k1 repos~5.4kAutomated safety check: PassGPL-3.0
Process InboxTDesktop-x64/tdesktop3k—~4.3kAutomated safety check: PassGPL-3.0
Career-Ops Gmail Lead Plugincareer-ops-hq/career-ops74k—~233Automated safety check: NotesMIT

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Categories

Questions about Signals Scout Inbox Validation

What does Signals Scout Inbox Validation do?

Follow-up Signals scout for the inbox itself. An agent skill from PostHog/posthog. Signals Scout Inbox Validation is an agent skill from PostHog/posthog, published by the product's own GitHub organization. Follow-up Signals scout for the inbox itself.

When should I use Signals Scout Inbox Validation?

Signals Scout Inbox Validation fits situations like: tasks that involve Email management.

How do I install Signals Scout Inbox Validation in Claude Code?

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

How do I install Signals Scout Inbox Validation in Codex?

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

Can I use Signals Scout Inbox Validation 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-inbox-validation -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-inbox-validation, .gemini/skills/signals-scout-inbox-validation, .github/skills/signals-scout-inbox-validation and .opencode/skills/signals-scout-inbox-validation in your project.

What does Signals Scout Inbox Validation need to run?

SKILL.md names no scripts, command-line tools or credentials: Signals Scout Inbox Validation 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 inbox-reports-list / inbox-reports-retrieve / scout-report-check-create / scout-report-check-list, execute-sql (document_embeddings + events), and whatever surface tools the report's source products need for re-probes (e.g. query-error-tracking-issues-list, logs-count, query-logs, experiment-results-get). .

Does Signals Scout Inbox Validation access the network?

SKILL.md names 1 domain. In commands or code: api.github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Signals Scout Inbox Validation 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 Inbox Validation use?

Signals Scout Inbox Validation 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 Inbox Validation use?

About 8.7k tokens (SKILL.md is roughly 35k 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 Inbox Validation?

Skills that share tags, products or a category with Signals Scout Inbox Validation: Garden Inbox (paperclipai/paperclip, 100k stars), Continue (telegramdesktop/tdesktop, 33k stars), Process Inbox (telegramdesktop/tdesktop, 33k stars) and Process Inbox (TDesktop-x64/tdesktop, 3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Signals Scout Inbox Validation?

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.