V1 Launch Bar Agent Skill

Gate a built v1 to go / no-go on two recorded tests — a true stranger reaches first correct value in ≤60 seconds unaided, AND the…

Context cost
11.6k tokensestimated from the bundle, loaded when it triggers
Bundle
13 files · 46.2 kBtext throughout, nothing executable
Licence
Apache-2.0the author’s own terms
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Gate a built v1 to go / no-go on two recorded tests — a true stranger reaches first correct value in ≤60 seconds unaided, AND the learn-from-corrections mechanism is wired and proven to compound (the thing 95% of enterprise pilots never deliver). Output is a recorded-evidence go / no-go checklist. Fires on "are we ready to launch", "is v1 good enough", "launch bar", "go/no-go on v1", "should we ship this pilot".

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.

securitytesting

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.md15.1 kB · preview
--- name: v1-launch-bar type: generator supersedes: none ---
8## What it does
9
10Turns "I think we're ready" into a go / no-go decision made on recorded evidence, not opinion. It runs a built v1 against exactly two gates and passes only if both are green on tape. Gate A: a person with zero context reaches the one correct outcome in ≤60 seconds with no rescue. Gate B: the product has a wired mechanism that captures the customer's corrections and turns them into better output — proven to close at least once before launch, with a numeric week-1 → week-4 delta committed as the pilot's exit proof. The artefact is the filled template.md: a checklist where every row carries a recorded-evidence citation and an evidence-ladder tier. A v1 that is polished, feature-complete, and loved by everyone who has seen it still fails if a true stranger stalls or the corrections loop is not wired. Feature-completeness is not a gate here. The two tests are.
11
12## The Icarus reframe
13
1495% of enterprise pilots ship a static tool: it does the same thing in week 4 as in week 1, and every edit the customer makes vanishes into a log nobody reads. That is the death shape, and it passes most launch reviews because the review scores polish and demos, not learning. This skill absorbs evidence-driven-testing — proof over prose, one recorded assertion per state change, show the old failure beside the new success — and points it at the launch decision itself, not at a single UI test. The 60-second test is a recorded session with a real stranger (behaviour observed, 0.7 on the ladder), never the fellow's "it's obvious" (opinion, 0.1). The corrections test reuses that skill's strongest move — the before/after that shows the old wrong output next to the new corrected one — and applies it to the whole product's ability to learn: seed one real correction, show the same input now yields the corrected output, on tape. A launch decision made on the fellow's confidence has measured nothing.
15
16## When to use / When NOT
17
18Use when a v1 is built, real users are lined up, and its eval pass rate at the chosen autonomy level (from eval-first-spec) is already met — and the fellow needs to decide go or no-go on the pilot. Trigger phrases: "are we ready to launch", "is v1 good enough", "launch bar", "go/no-go on v1", "should we ship this pilot".
19
20Do not use when:
21
22| Request | Belongs to |
23|---|---|
24| "How do we keep improving the product / what's the monthly cadence / run the loop / what happens after launch" | refine-flywheel (08). This skill is the one-time gate and wires the mechanism; that skill runs it forever and measures the delta this skill commits to. Hand the pilot over once it is GO. |
25| "How do we price the pilot / what are the terms / set the commercial success metric" | pilot-six-term-sheet (07, sibling). Its success metric is the business KPI the customer buys; the two launch tests here are the product bar underneath it. |
26| "Define what working means / write the golden set / what's the cost-per-outcome" | eval-first-spec (07, sibling). That is the pre-build spec. This skill assumes its pass rate is already an input, and does not re-derive it. |
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md2,607 words
Files13
LicenceApache-2.0
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.

≈180
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
11,370
on trigger
The instruction body and 12 supporting files, read only when the skill fires.
5.8%
of a 200k window
Ten skills this size would take about 58% of the window before you open a file.
050k100k150k200k context window

11.6k 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.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. 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

13 files, 46.2 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md15.1 kB
  • template.md4.2 kB
  • examples/sample.md6.7 kB
  • tests/RESULTS.md6.3 kB
  • tests/rubric.json1.1 kB
  • tests/adversarial/01.md0.9 kB
  • tests/adversarial/02.md1.4 kB
  • tests/adversarial/03.md1.3 kB
  • tests/golden/01.md1.7 kB
  • tests/golden/02.md1.9 kB
  • tests/golden/03.md2.0 kB
  • tests/golden/04.md1.7 kB
  • tests/golden/05.md1.9 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 13 files you can review in full before installing. The Apache-2.0 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.

# V1 Launch Bar · 11.6k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/v1-launch-bar/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/v1-launch-bar" ] && { [ ! -e .claude/skills/v1-launch-bar ] || { mv .claude/skills/v1-launch-bar "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/v1-launch-bar" .claude/skills/ && echo "Installed .claude/skills/v1-launch-bar"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add the-utopia-studio/v1-launch-bar

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/v1-launch-bar/ 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/v1-launch-bar/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/v1-launch-bar" ] && { [ ! -e ~/.claude/skills/v1-launch-bar ] || { mv ~/.claude/skills/v1-launch-bar "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/v1-launch-bar" ~/.claude/skills/ && echo "Installed ~/.claude/skills/v1-launch-bar" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/v1-launch-bar/ 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
Referencethe-utopia-studio/v1-launch-bar

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.

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