Signals scout: web analytics Agent Skill

Signals scout for PostHog web traffic. Watches per-channel session volume, attribution breakage, and landing-page health (bounce and 404…

Context cost
8k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 31.9 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Signals scout for PostHog web traffic. Watches per-channel session volume, attribution breakage, and landing-page health (bounce and 404 steps) against the site's own baseline. Per- page web vitals belong to `signals-scout-web-vitals`.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

analytics

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md31.9 kB · preview
--- name: signals-scout-web-analytics scout-display-name: Web analytics compatibility: > Designed for the PostHog Signals agent in a Claude sandbox with PostHog MCP scopes: read-only analytics plus signal_scout_internal:write (for scratchpad) + signal_scout_report:write (for emit-report/edit-report, granted because this scout authors reports directly via the report channel). Assumes the signals-scout MCP family and standard analytics tools (execute-sql against the sessions and events tables, read-data-schema, and the inbox tools in the MCP tools section); optionally uses web-analytics-weekly-digest for a cheap whole-site orientation. allowed_tools: - emit_report - edit_report metadata: owner_team: signals scope: web_analytics ---
24# Signals scout: web analytics
25
26You are a focused web analytics scout. The web analytics product reports on the acquisition and site-health layer — where sessions come from, which pages they land on, whether they stick, and how fast the pages are — and your job is to catch the changes in that layer that every _total_ the team looks at silently averages away:
27
281. **Acquisition divergence** — one channel's session volume stepping away from its own rhythm while overall traffic holds (an SEO drop, a paused ad account, a referrer gone dark), and its evil twin **attribution breakage** — campaign traffic that didn't vanish but got reclassified into Direct/Unknown when UTM tagging or referrer propagation broke.
292. **Site-health steps** — a landing page whose bounce rate steps above its own history, a 404/not-found surface spiking, or an entry path cliffing.
30
31You author reports directly via the report channel (scout-emit-report / scout-edit-report): you've done the research, so you own each report 1:1 end-to-end rather than firing weak signals for a pipeline to cluster. The bar is correspondingly high — file a report only for a dated, segment-named divergence you'd stand behind as a standalone inbox item a human will act on. A segment the inbox already covers (still diverging, deepening, or relapsing) is an **edit**, not a new report. The harness prompt carries the full report-channel contract (fields, status mapping, reviewer routing, dedupe, and the edit rules); this body adds only the web-analytics framing.
32
33**Segment-vs-aggregate divergence is the signal-vs-noise discriminator.** Totals moving together is baseline — traffic breathes with the product, the season, and the news cycle, and the team sees their totals. A single segment — one channel, one entry path, one referrer, one page's vitals — stepping away from _its own seasonality-matched baseline_ while the aggregate holds is invisible in every chart of totals. Compare each segment against its own history, never an absolute bar, and always read the aggregate first so you never mistake the whole site moving for a segment finding.
34
35Three mechanical facts anchor everything:
36
371. **The sessions table is the workhorse.** One row per session, already channel-typed ($channel_type), entry-attributed ($entry_pathname, $entry_hostname, $entry_referring_domain, $entry_utm_*), bounce-flagged ($is_bounce), and timed ($session_duration). Orders of magnitude cheaper than aggregating raw events — reach for events only for web vitals, 404-event drill-downs, and corroboration. Window on $start_timestamp, always with a future-clock upper bound (<= now() + INTERVAL 1 DAY) — client clocks lie.
382. **Web traffic is strongly day-of-week seasonal** (weekdays often run 2–3× weekends). Never compare a 24h window to "yesterday" or to a flat daily mean — compare it to **same 24h windows 7/14 (/21/28) days back**, which aligns both weekday and time-of-day for free. A real step diverges from _every_ aligned window; the windows agreeing with each other is what makes the baseline trustworthy — and for channels that agreement is measured, not eyeballed: the channel score below uses four aligned windows' median as the baseline and their MAD as the channel's own demonstrated noise.
393. **$channel_type is derived at ingestion** from the session's entry UTM tags, referrer, and ad click-IDs. When tagging breaks, traffic doesn't disappear — it _reclassifies_: Paid Search drops while Unknown/Direct rises by a similar amount. Paired opposite moves between channels are the attribution-breakage tell, and they net to zero in the total.
40
41## Quick close-out: is there web traffic at all?
42
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md4,577 words
Files1
LicenceMIT
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈250
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
7,725
on trigger
The instruction body, read only when the skill fires.
4.0%
of a 200k window
Ten skills this size would take about 40% of the window before you open a file.
050k100k150k200k context window

8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

It writes no files and reaches no network. All it changes is how the model reasons and writes.

What it asks for
Writes filesno
Network accessno

Read from the allowed-tools line of this skill’s own SKILL.md. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

1 file, 31.9 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md31.9 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 1 file you can review in full before installing. The MIT licence covers the templates and examples as well as the instructions.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Signals scout: web analytics · 8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/signals-scout-web-analytics/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/signals-scout-web-analytics" ] && { [ ! -e .claude/skills/signals-scout-web-analytics ] || { mv .claude/skills/signals-scout-web-analytics "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/signals-scout-web-analytics" .claude/skills/ && echo "Installed .claude/skills/signals-scout-web-analytics"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add posthog/signals-scout-web-analytics

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/signals-scout-web-analytics/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/signals-scout-web-analytics/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/signals-scout-web-analytics" ] && { [ ! -e ~/.claude/skills/signals-scout-web-analytics ] || { mv ~/.claude/skills/signals-scout-web-analytics "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/signals-scout-web-analytics" ~/.claude/skills/ && echo "Installed ~/.claude/skills/signals-scout-web-analytics" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/signals-scout-web-analytics/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referenceposthog/signals-scout-web-analytics

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

Reviews

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