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2026-03-30
FeatureUpdateFix
Week of March 24

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Sandbox lifecycle configuration

You can now configure sandbox lifecycle behavior directly when creating a sandbox. The new lifecycle option lets you control what happens when a sandbox times out — either kill (default) or pause — and whether the sandbox should automatically resume on incoming traffic.This replaces the previous beta pause API with a cleaner, more flexible approach. Learn more in the AutoResume docs.

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CLI: sandbox info command

The CLI now includes a sandbox info command that displays detailed information about a sandbox, including its state, template, CPU/memory configuration, network rules, and lifecycle settings. Supports both human-readable and JSON output.
e2b sandbox info <sandboxID>
e2b sandbox info <sandboxID> --format json

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CLI: sandbox pause and sandbox resume commands

You can now pause and resume sandboxes directly from the CLI:
e2b sandbox pause <sandboxID>
e2b sandbox resume <sandboxID>
See the CLI reference for details.

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Expanded sandbox info API

The SDK getInfo() / get_info() methods now return additional fields: lifecycle configuration, network rules, and allowInternetAccess. This gives you full visibility into a sandbox’s configuration without needing to track it separately.

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Template tags API

A new getTags() / get_tags() method lets you list all tags for a template, returning each tag’s name, associated build ID, and creation timestamp. Useful for managing versioned deployments. See the tags docs.

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fixMissing option for template aptInstall

The template builder’s aptInstall() / apt_install() method now accepts a fixMissing / fix_missing option, which passes --fix-missing to apt-get install. This helps resolve broken package states during template builds.

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Updates

  • Improved auto-resume reliability — Auto-resume now correctly handles sandboxes that are mid-transition (pausing or snapshotting), preventing transient 502 errors when traffic arrives during state changes.
  • Better error types in SDKs — The SDKs now distinguish between “sandbox not found” and “file not found” errors with dedicated SandboxNotFound and FileNotFound error types, making it easier to handle each case in your code.
  • Connection config propagation fix — Instance-level connection config (API key, domain, headers) is now correctly forwarded to all SDK methods including pause and connect.

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Bug fixes

  • Dotfiles included in template uploads — Template file uploads now correctly include dotfiles (e.g., .env, .gitignore) that were previously skipped.
  • CLI sandbox list pagination — Fixed an issue where sandbox list could fetch all sandboxes regardless of the specified limit. The command now defaults to 1,000 results and respects the --limit flag.
  • CLI sandbox logs timeout — Fixed a bug where sandbox logs without --follow could hang due to unnecessary status polling.
  • CLI error handling — The CLI no longer crashes when the API returns non-standard HTTP status codes.
  • Python SDK stream timeout — Improved timeout handling for streaming requests to prevent hanging connections.