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Coinbase

Key player

Created x402 — the open HTTP-402 payment protocol for agents.

Protocol & Standards x402

What Coinbase builds for agent payments

x402 is Coinbase’s bid to make HTTP itself a payment rail. Instead of a checkout form, a server answers 402 with a price; the client (human app or AI agent) pays USDC and retries; the resource is released in the same session. That model is what lets agents buy API calls at $0.001 without a card on file.

Around the protocol, CDP packages a hosted facilitator (verify + settle), wallet APIs, and Base as the default low-fee chain. Most open-source x402 SDKs and demos in this directory either target CDP or stay wire-compatible with it.

If you are shipping an agent-payable API in 2026, Coinbase is still the fastest path from zero to a working paywall — then you can swap in a self-hosted facilitator later.

Coinbase’s open-source footprint

We track 1 public Coinbase repository in the AI-payments directory, holding 6.4k GitHub stars between them. The largest is x402 at 6.4k stars. Written mainly in TypeScript (1). 1 of them shipped code in the last 90 days, most recently x402.

1
tracked repos
6.4k
combined stars
1
active in 90 days

Open-source projects that build on Coinbase

96 repositories in this directory name Coinbase in their title, description or topics — useful if you want working code rather than documentation. The most-starred are below.

  • helix  822★ · TypeScript
    Self-healing infrastructure for AI agent payments. 90.3% auto-recovery.
  • awesome-x402  264★
    🚀 Curated list of x402 resources: HTTP 402 Payment Required protocol for blockchain payments, crypto micropayments, AI agents, API monetization. Includes SDKs (TypeScript, Python, Rust), examples, facilitators (Coinbase, Cloudflare), MCP integration, tutorials. Accept USDC payments with one line of code. Perfect for AI agent economy.
  • tweazy  48★ · TypeScript
    The best way to monetize AI applications & MCP, using x402, CDP Smart Wallets & Paymaster
  • proxy402  26★ · Go
    URL shortener
  • sample-agentcore-cloudfront-x402-payments  24★ · Python
    AWS payment demo of x402 using Bedrock AgentCore, Strands SDK, and CloudFront.
  • cdp-sdk-java  17★ · Java
    Cloudera CDP SDK for Java
  • x402-demo  12★ · TypeScript
    a simple x402 demo using CDP facilitator, embedded wallet, faucet, and token balances API. Includes an x402-enabled API, and simple web app from which the user can call the API.
  • awesome-agent-payments-protocol  12★ · HTML
    🚀 Curated resources for Google's Agent Payments Protocol (AP2), A2A & x402 — blogs, videos, repos & specs. Contributions welcome!
  • Coinbase-x402  11★ · JavaScript
    This is demo for Coinbase x402 payment
  • x402-proxy  10★ · TypeScript
    curl for x402 and MPP paid APIs. CLI + MCP proxy that auto-pays any endpoint on Base, Solana, and Tempo. Zero crypto code on the buyer side.
  • moltspay  8★ · TypeScript
    Blockchain payment infrastructure for AI Agents
  • quantoracle  7★ · TypeScript
    63 deterministic quant computation tools for autonomous financial agents. Options, derivatives, risk, portfolio, statistics, crypto/DeFi, macro/FX, TVM. 1,000 free calls/day — no signup.

Coinbase vs other protocol & standards

Company Protocols HQ Founded OSS repos
Coinbase x402 Remote / USA 2012 1
Stripe ACP San Francisco / Dublin 2010 0
Google AP2, A2A Mountain View, USA 1998 2
OpenAI ACP San Francisco, USA 2015 0

Also supporting x402: Circle, Crossmint, Base, Cloudflare, Daydreams.

On mpp.best

The Coinbase x402 stack →What is x402? →Facilitators →

Coinbase’s own repositories

Matched from our directory by GitHub org (coinbase, coinbase-samples).

x402
⭐ 6.4k · TypeScript

A payments protocol for the internet. Built on HTTP.

Related companies

Stripe
ACP
Google
AP2
OpenAI
ACP

← Back to all AI payment companies