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Faremeter: The OSS x402 Framework

Faremeter is a framework of libraries, tools, and applications designed to allow agents and other utilities to transparently make web3 payments using web2 infrastructure developed by ABK Labs. This guide introduces our framework and compares its potential with other frameworks.
The single best thing that Faremeter has done is make the payment plugins self contained. Adding a new scheme or network is done in one place, and immediately works with everything else in Faremeter.
The next generation of Agentic Commerce tools:Faremeter v0.6.0 - The flagship x402 framework. Faremeter v0.6.0 sets the standard for adding new blockchains and APIs.

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Framework names

Faremeter 0.6.0

The flagship x402 framework
  • Accept any form of payment
  • Proxy any API in the world
  • Simplest developer experience
  • Superior modularity and scalability

Coinbase x402

The first modern x402 framework
  • Accept USDC payments on Base
  • Utilize CDP Baazar for APIs
  • Requires CDP API keys

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Build and Integrate with Faremeter

Explore the architecture, discover key standards, and learn how to start developing or integrating payments for agents:
  • Architecture Document: Understand Faremeter’s core design and system Architecture
  • Developer Notes: Guidance on contributing and customizing Developer notes
  • Quickstart Guide: Fast entry for new users Quickstart
  • Wallet Integration Guide: Learn how to integrate any wallet with Faremeter for EVM and Solana Wallet Integration

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Core Concepts

Faremeter is built on:
  • HTTP and 402 Payment Required concepts for standardized agentic transactions.
  • Plugin system agnostic to wallets, standards, and blockchains.
  • Wrappers/middleware/proxies that integrate payment logic with minimal changes to existing codebases.
Payment plugins are not involved in any of the mechanics of x402 outside of:
  • Providing a payment requirements.
  • Paying for a payment requirements.
  • And settling a payment.
This is not how Coinbase/x402 works as every piece of the Coinbase framework has to know about everything else in the framework. New payment schemes, networks, or assets require a majority of the codebase to be updated to be compatible.

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Compatibility

Faremeter supports and aims to be compatible with the industry’s top emerging standards:
  • Coinbase x402 (x402)
  • Google Agent Payments Protocol (AP2)
  • Stripe Agentic Commerce Protocol (ACP)
  • Cloudflare Pay-Per-Crawl (Pay-Per-Crawl)
  • L402 standard (L402)
See the Compatibility Document for more details.

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What you can do with Faremeter

Faremeter empower developers and enterprises to build the next generation of agentic, payment-enabled APIs with rapid integration and global reach. Here’s a non-exhaustive list of Faremeter’s capabilities and common uses.
CapabilityEnables you to…
Agent-driven transactions
  • Instantly enable pay-per-use API access for AI agents and users.
  • Remove the need for accounts or API keys: just pay and go.
  • Support millions of autonomous agents transacting in real time.
  • Turn any API endpoint into a revenue stream with built-in support for HTTP 402
Composability & Extensibility
  • Flexibly integrate with any payment standard, network, or wallet via plugin modules.
  • Rapidly onboard new payment schemes and digital assets with no vendor lock-in.
  • Extend APIs, middleware, or proxies to support both legacy and modern systems.
Best-in-class developer experience
  • Start building in minutes, not days, with reference flows, plugins, and open documentation.

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Enterprise considerations

Built for a future of billions of autonomous agents online, Faremeter’s open-source tools make it easy to implement flows and microtransactions in your applications with the trust, security, and scalability for wide-reaching enterprise needs.
FeatureDescription
Secure
  • Enterprise-grade security, open code audits, and community-backed best practices.
  • Designed for regulated markets and programmable finance by being self-sovereign, privacy-first by design
  • Enterprises retain full control over their infrastructure and data, avoiding lock-in to a single provider or chain while still aligning with the emerging x402 standard.
Trustworthy
Compatible
  • Modular and high-performance built to work alongside popular web frameworks and developer tools.
  • Loose-coupling and clear interface boundaries make Faremeter easy to drop into new or legacy architectures.
  • Leverage robust plugin models to support any schema, network, or use case.
  • Extend or compose Faremeter middleware with other payment, identity, or compute standards.
  • No lockin: bring your own smart wallets, proxy, or infrastructure.
Reliable
  • Near real-time transaction processing—even on-chain to serve any region, currency, or platform.
  • Continuous monitoring for forward and backwards compatibility with x402 versioning changes

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Contributors & Community

Faremeter is built by ABK Labs engineers and open-source contributors. Read more about the project on GitHub, join development, or submit a PR.

Quickstart

Set up your development environment for building with Corbits and Faremeter.

Join the community

Get involved with the fastest growing open-source x402 development community.

Contribute to Faremeter

Build new plug-ins for the most comprehensive x402 framework in the world