MCP-Billing

Overview

MCP-Billing is the auth and billing boilerplate designed to help you ship your MCP server today, not next week. It provides a pre-configured infrastructure layer that handles identity, payments, and rate limiting so you can focus on building the core functionality of your tool.

The Problem

Building an MCP tool takes a weekend, but wiring up identity and payments is a complex engineering task. Many developers find themselves spending days reading RFCs and burning weekends on plumbing instead of shipping features. Currently, over 40% of exposed MCP services run with no auth at all, leaving them vulnerable.

Key Features

• OAuth 2.1 + PKCE: Accept standard OAuth clients without touching a single RFC.
• API Key Management: Generate, rotate, and revoke keys from a dashboard in one click.
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• Stripe Usage-Based Billing: Charge per call or per token with explicit handling for retries, partial failures, and interrupted streams.
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• Rate Limiting: Protect your server from abuse using Redis-backed sliding window algorithms.
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• Multi-Tenant Ready: Each client gets its own context, keys, and quota.
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• Independent Infrastructure: Decouple billing logic from your product code to allow for easier maintenance and updates.
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Billing Edge Cases Handled

MCP-Billing makes the hard decisions for you regarding usage-based billing:

• Retries: Every usage event carries an idempotency key to ensure that network retries never double-charge a customer.
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• Partial Failures: Calls that die mid-way are recorded as 'partial' and excluded from billing by default unless you choose otherwise.
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• **Streaming:** One usage event per completed stream, not one per token, ensuring fair and accurate billing for long-running processes.
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How to Get Started

1. Add your environment variables and deploy the boilerplate.
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2. Integrate your MCP server by calling the auth and billing endpoints.
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3. Deploy with a commercial license that allows for unlimited personal and client projects.
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4. Access support via GitHub issues for 60 days from purchase.
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Pricing

One-time payment of €79 (approximately $90 USD) with no subscription fees or revenue share. You own the code and receive a full commercial license.