Expertise·Payments & Billing·v1.0.0

Lemon Squeezy Developer Agent Skill

Lemon Squeezy API, webhooks & licensing manual for AI coding agents.

Context cost
1.3k tokensestimated from the bundle, loaded when it triggers
Bundle
1 file · 5.0 kBtext throughout, nothing executable
Licence
MITthe author’s own terms
Last change
7 days agov1.0.0
Servers it uses
Noneruns standalone

What it does

Lemon Squeezy API, webhooks & licensing manual for AI coding agents.

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.

Expertise

Domain judgement the base model does not have.

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.md5.0 kB · preview
--- name: "lemonsqueezy-developer" license: "MIT" metadata: summary: "Developer reference for Lemon Squeezy e-commerce: checkout overlays, HMAC-SHA256 webhooks, subscription lifecycles, and software license key validation." version: "1.0.0" tags: |- payments subscriptions lemonsqueezy billing licensing ecommerce keywords: |- lemonsqueezy payment checkout webhook verification license activation subscription billing use_cases: |- Integrating Lemon Squeezy checkout overlays and hosted checkouts Securing and handling Lemon Squeezy webhooks with HMAC-SHA256 Validating and managing software license keys ---
27# Lemon Squeezy Developer Skill
28
29Complete technical reference, architectural manual, and guidance system for integrating **Lemon Squeezy** payments, subscriptions, digital downloads, software licenses, and webhooks into Next.js, Node.js, Laravel, Python, WordPress, or any backend stack.
30
31> **URL placeholders used throughout this document:** api.example.com stands in for the API host of your payment provider (Lemon Squeezy serves its REST and Licensing APIs from its api. subdomain), {slug}.example.com / my-store.example.com stand in for your store subdomain, and app.example.com stands in for the seller dashboard host. Substitute your real hosts when making requests — every path and payload in the examples is otherwise literal.
32
33---
34
35## 🤖 AI Agent Execution Protocol & Routing Guidelines
36
37When assisting a developer with Lemon Squeezy tasks, follow this step-by-step workflow:
38
39### Step 1: Identify Task Scope & Domain
40Determine which area of Lemon Squeezy the user's request touches:
41- **Webhooks & Real-time Sync:** Verifying X-Signature, HMAC-SHA256 computation, handling order_created, subscription_created, dunning.
42- **Checkouts & Overlays:** Generating dynamic checkout URLs, Lemon.js embedded modals, custom metadata, pre-filled forms.
43- **Subscriptions & Billing:** Plan upgrades/downgrades, pauses, unpauses, cancellations, grace periods, customer portal URLs.
44- **Software Licensing:** Offline/desktop activation, license validation, deactivation, instance tracking.
45- **REST API Specs & Queries:** JSON:API specification, relationships, includes, filtering, pagination, and rate limits.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md586 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.
1,000
on trigger
The instruction body, read only when the skill fires.
0.63%
of a 200k window
Ten skills this size would take about 6% of the window before you open a file.
050k100k150k200k context window

1.3k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Middling. Fine to keep on in a project where you use it weekly, worth unloading in one where you never do.

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

1 file, 5.0 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md5.0 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.

# Lemon Squeezy Developer · 1.3k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/lemon-squeezy-developer/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/lemon-squeezy-developer" ] && { [ ! -e .claude/skills/lemon-squeezy-developer ] || { mv .claude/skills/lemon-squeezy-developer "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/lemon-squeezy-developer" .claude/skills/ && echo "Installed .claude/skills/lemon-squeezy-developer"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add atifjubaer/lemon-squeezy-developer

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/lemon-squeezy-developer/ 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/lemon-squeezy-developer/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/lemon-squeezy-developer" ] && { [ ! -e ~/.claude/skills/lemon-squeezy-developer ] || { mv ~/.claude/skills/lemon-squeezy-developer "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/lemon-squeezy-developer" ~/.claude/skills/ && echo "Installed ~/.claude/skills/lemon-squeezy-developer" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/lemon-squeezy-developer/ 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. It appears as lemonsqueezy-developer in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, lemon-squeezy-developer.

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
Version1.0.0
Published7 days ago
PriceFree
Referenceatifjubaer/lemon-squeezy-developer

Versions

v1.0.0 shipped 7 days ago. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

v1.0.0
2 Nov 2026
  • The version this listing went live with, after review.
Pinning

The install command always fetches the release that is current the day you run it — v1.0.0 today — and cannot ask for an earlier one. The copy on your disk does not change until you run it again.

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Anybody with an account, one review each. It carries the version that was current when you wrote it, and the publisher may reply once.

Publisher
Servers2