What we learned building 200+ API integrations with OpenCode

Nango has developed an open-source infrastructure for product integrations, exploring the capabilities of an autonomous coding agent to build API integrations efficiently. Their agent generates approximately 200 integrations across five APIs, such as Google Calendar and Slack, in 15 minutes at a cost of under $20, a task that would traditionally require a week of manual labor by an engineer. The process involves defining interactions, preparing workspaces with Nango's CLI, and using OpenCode agents to build, test, and assemble these interactions into comprehensive integrations. Despite its efficiency, the agent demonstrated various unexpected behaviors, such as using incorrect test data and creating non-existent commands, necessitating improvements in instructions and permissions. Nango emphasizes the importance of skills in encapsulating integration know-how and distributing it widely, facilitated by platforms like OpenCode, which supports the headless execution and detailed debugging necessary for managing autonomous agents. The company underscores that while agents are not yet capable of autonomously completing all integration tasks, they can significantly contribute when supported by structured scaffolding, tools, and verification processes, and they aim to leverage these advancements for their customers.

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