Building AI agents in JavaScript means gluing 5 libraries that fight each other. Vercel AI SDK has no runtime. LangChain.js is 200MB of leaky abstractions. MCP is just a protocol.
AgentsKit is the missing kit. 12 small packages, 6 formal contracts, nothing locks you in. Swap OpenAI for Claude in one line. Same useChat hook in React AND terminal. 10KB zero-dep core, bundle gates in CI.
`npx agentskit init` → working agent in 30 seconds. MIT, solo-built, open roadmap.
