Polar

Polar logo
Bills digital products as merchant of record, handling subscriptions, usage metering, tax compliance and payouts.
SummaryFeaturesPricingCompetitors9How to use

Polar API

Sign in
both. API key or OAuth 2.0Source

MCP server

Address
https://mcp.polar.sh/mcp/polar-mcpSource
What it is
Official remote MCP server (Streamable HTTP transport) using OAuth (no API key to paste); production server https://mcp.polar.sh/mcp/polar-mcp and sandbox https://mcp.polar.sh/mcp/polar-sandbox, documented at https://polar.sh/docs/integrate/mcp. A separate third-party npm server @stackcurious/polar-mcp also exists (uses an Organization Access Token; not vendor-shipped).

Checked on 2026-10-10 in the developer documentation.

How to automate Polar

API and webhooks

Polar has a public API, SDKs, an OAuth 2.0 option and webhooks for purchases, subscription changes and customer events. One concrete idea: listen for a subscription webhook and grant or remove access to the matching account in your app.

MCP server

Polar hosts an official MCP server with OAuth sign-in, plus a sandbox server for testing. It exposes about 100 operations through three meta tools that search, describe and execute them. One concrete idea: ask an agent in Claude to find a customer and list their active subscriptions.

Native integrations

Benefits connect to GitHub and Discord. Framework adapters wire checkout and webhooks into your stack. One concrete idea: when someone buys, invite them to a private GitHub repository automatically.