Setup Polar

What it does

When your agent uses it

• User wants to set up Polar
• Integrate Polar in their project
• User is starting fresh with Polar and needs guided setup
• User asks how do I get started with Polar

Example prompts

• “set up Polar”
• “integrate Polar”
• “how do I get started with Polar”
• “/setup-polar”

Requirements

• A credential in POLAR_ACCESS_TOKEN
• A credential in POLAR_WEBHOOK_SECRET

Workflow steps

9 steps, taken from the step headings in SKILL.md.

1. 1Check MCP Availability
2. 2Install Polar MCP
3. 3Gather Project Context
4. 4Create Organization (if needed)
5. 5Create First Product
6. 6Generate Integration Code
7. 7Set Up Webhooks
8. 8Test the Integration
9. 9Next Steps

What it can do on your machine

Read from SKILL.md and the folder at commit fc39ef0. 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

  Shell commands in SKILL.md call:

  • claude
  • ngrok

  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:

  • mcp.polar.sh
  • abc123.ngrok.io

  Also links to:

  • sandbox.polar.sh
  • polar.sh

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • POLAR_ACCESS_TOKEN
  • POLAR_WEBHOOK_SECRET

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Setup Polar loads about 1.1k tokens when it runs. Until then it costs about 143 tokens; SKILL.md has 459 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~143

When it runs · the whole SKILL.md, loaded when a task matches

~1.1k

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

• WarningMentions a paste, webhook or tunnelling service often used to send data outSKILL.md:113

  py the ngrok URL (e.g., `https://abc123.ngrok.io`).

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

The full file from chmonitor/chmonitor at commit fc39ef0, republished under its GPL-3.0 licence (© chmonitor). 459 words, ~1,128 tokens.

name

setup-polar

description

Interactive onboarding wizard to set up Polar payment integration from scratch. Use this skill when: (1) User wants to "set up Polar" or "integrate Polar" in their project; (2) User is starting fresh with Polar and needs guided setup; (3) User asks "how do I get started with Polar"; (4) User wants to add payments/subscriptions/checkout to their app using Polar; (5) User needs help creating their first Polar product and checkout. This skill walks through MCP installation, authentication, product creation, and generates framework-specific integration code.

# Production
claude mcp add --transport http "Polar" "https://mcp.polar.sh/mcp/polar-mcp"

# Sandbox (recommended for setup)
claude mcp add --transport http "Polar Sandbox" "https://mcp.polar.sh/mcp/polar-sandbox"

{
  "mcpServers": {
    "Polar Sandbox": {
      "url": "https://mcp.polar.sh/mcp/polar-sandbox"
    }
  }
}

Create a product with:
- Name: "Pro Plan"
- Monthly price: $29
- Organization: [user's org]

POLAR_ACCESS_TOKEN=    # from polar.sh/settings (or sandbox)
POLAR_WEBHOOK_SECRET=  # created in Step 7
POLAR_SERVER=sandbox   # omit or set to "production" when going live

© chmonitor, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/setup-polar of chmonitor/chmonitor.

Open the folder on GitHubat commit fc39ef0