The Composio breach in May 2026 exposed every credential stored on their platform. That's the risk of closed-source integration platforms. Your customers' OAuth tokens, API keys, and credentials sit on servers you can't inspect, running code you can't read. Nango is the open source alternative. 11600+ GitHub stars. 900+ APIs. Every line of code is public. The auth layer, the credential store, the proxy, the execution runtime. All inspectable. All self-hostable. Replit, Ramp, and Mercor already run it in production. 600+ B2B companies total. Here's why developers are switching: You describe an integration in plain English. "Sync GitHub issues to my database every 5 minutes." The Nango AI Builder skill, along with a coding agent such as Claude, Cursor, or Codex, can write code and test it against a real account. You read it. You edit it. You own it. It's not a black box. It's code in your repo. The runtime handles everything production needs: OAuth for 900+ APIs, automatic token refresh, rate limit handling, per-tenant isolation, retries, and scaling. SOC 2 Type II, HIPAA, GDPR compliant. And you can self-host the entire thing for $0. The "unified API" vendors charging $40K-$100K/year for the same capability are selling you a hosted version of what Nango ships publicly. After Composio, the question isn't whether open source integrations are good enough. It's whether you can afford to trust closed source with your customers' credentials.