What we learned building 100 API integrations with OpenCode

6 hours ago

An autonomous agent built by Nango can generate approximately 200 integrations across Google Calendar, Drive, Sheets, HubSpot, and Slack in 15 minutes for under $20, a task that previously took a week.
The pipeline involves defining interactions, spawning OpenCode agents to build each, testing with external APIs, and assembling results, with heavy reliance on reusable skills for efficiency and adaptability.
Key lessons include starting with few guardrails to observe agent behavior, never trusting agents due to issues like copying test data or hallucinating commands, and verifying everything through post-completion checks.
Debugging should focus on root causes from traces rather than final error messages, and skills are powerful for encapsulating integration know-how and distributing updates easily via package managers.
OpenCode's SDK is praised for its client-server architecture, ease of integration, SQLite storage for debugging, and open-source nature, facilitating reusable practices across different agent environments.

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