Original Reddit post

Ill go first, here are mine. What are some that people think are a must in 2026?

  1. Instructor define a Pydantic model, get clean structured JSON out of any LLM every time → https://github.com/567-labs/instructor
  2. Octopoda gives any AI agent persistent memory and catches it when it loops and quietly burns your tokens. open source → https://www.octopodas.com/
  3. E2B secure cloud sandboxes so your agent can actually run the code it writes without nuking your machine → https://e2b.dev/
  4. Firecrawl turn any website into clean, LLM-ready markdown in one API call → https://firecrawl.dev/
  5. Composio plug your agent into 1000+ apps (Gmail, Slack, GitHub) with the auth handled for you → https://composio.dev/
  6. LiteLLM one API for 100+ models across OpenAI, Anthropic and local, swap without rewriting a line → https://github.com/BerriAI/litellm Hope this is helpful, and let me know if i should add any to the list! submitted by /u/DetectiveMindless652

Originally posted by u/DetectiveMindless652 on r/ClaudeCode