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Pre-built Tool Libraries
Web search, code exec, file ops, browser, image gen — open-source and managed tool ecosystem.
3 hours3 resources
You don't need to write tools from scratch. Ready-made:
- Web search: Tavily, Exa, Brave Search API, SerpAPI, Perplexity API
- Code execution: E2B (sandboxed Python/JS), Riza, Modal
- Browser: Browserbase, Playwright + LLM, Browser-Use
- File ops: local fs (caution: sandbox required), S3 wrappers
- Image gen: OpenAI DALL-E, Replicate (FLUX, SDXL), Midjourney API
- Image understanding: Anthropic/OpenAI vision (built-in)
- Email/SMS: Resend, Twilio, SendGrid
- Calendar: Google Calendar API, Outlook Graph
- Multi-tool: MCP servers (Slack, GitHub, Postgres, Memory, Filesystem)
Composio: 250+ pre-built tools, agent-ready. LangChain tools library is broad too.