Add environment-classes section to Sandboxes from TokenJam explainer - #59
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Integrates tokenjam.dev's "What are agent environments and sandboxes?" (Anil Murty, May 2026) into sandboxes.md. New "Environment Classes — Beyond Code Sandboxes" section covering the three classes the page didn't address: - Browser sandboxes (Browserbase + Stagehand; own profile/cookie jar per session) - Virtual desktops (Computer Use / Operator) with the trade-offs: slower screenshot reasoning, higher visual-hallucination rate, UI drift breaking deterministic eval — "right tool when no API exists, wrong tool when one does" - Simulation environments (HUD, Inspect AI Sandboxing Toolkit) Two load-bearing ideas integrated: - Environments and evaluation share infrastructure: same sandbox, deterministic data, full instrumentation — "can I replay a production run as an eval" is now framed as a vendor-selection criterion, cross-linked to evals.md - "Failures of grounding, not intent" added to Why Sandboxes Matter, plus the read-only-agents-still-need-sandboxes argument Also: Firecracker per-step isolation numbers (~125ms, 3-10MB), "AWS Lambda's security model applied to agents," and the isolation-is-a-spectrum caveat. Index and Further Reading updated; changelog entry added. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01C9gzSkgNa3yNtob4gBeeit
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Summary
Integrates TokenJam's "What are agent environments and sandboxes?" (Anil Murty, May 2026) into
content/sandboxes.md.New section: Environment Classes — Beyond Code Sandboxes
The page previously covered only code-execution sandboxes. The new section (placed right after "Why Sandboxes Matter") adds the other three classes from the article's taxonomy:
Load-bearing ideas integrated
Files
content/sandboxes.md— new section, updated index, grounding framing, Further Reading entrycontent/changelog.md— entry under 2026-07-09index.html— rebuiltTest plan
🤖 Generated with Claude Code
https://claude.ai/code/session_01C9gzSkgNa3yNtob4gBeeit
Generated by Claude Code