Sub-agent runs independent sessions in parallel, maximizing isolation; if one crashes, it doesn't affect the whole system. Stable.

Firecrawl officially open-source web proxy framework Web Agent, performing the "search-crawl-interact" closed-loop tasks through the Plan-Act cycle and parallel sub-agents within independent browser sessions, compatible with self-hosted large models like Anthropic, OpenAI, and others. Developers can quickly generate templates using firecrawl create agent, and encapsulate complex processes as Skills through SKILL.md. The new version defaults to Claude Opus 4.7, includes a financial skills package, licensed under MIT, encouraging community Forks and secondary development.