# Vercel Sandbox 1.10.0

- Product: Vercel Sandbox (https://whatsnew.fyi/product/vercel-sandbox)
- Vendor: Vercel
- Date: 2026-04-14
- Version: 1.10.0
- Original notes: https://github.com/vercel/sandbox/releases/tag/%40vercel/sandbox%401.10.0
- Permalink: https://whatsnew.fyi/product/vercel-sandbox/releases/1.10.0

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Expose Filesystem api from Sandbox
- **fixed** — Reuse Undici Agent across instances
- **changed** — Improve fallback team selection for scope inference to try defaultTeamId first, then the best hobby-plan OWNER team, and skip teams that return 403
- **fixed** — Add workflow serialization support for the Snapshot class via WORKFLOW_SERIALIZE and WORKFLOW_DESERIALIZE

###### Minor Changes

-   Expose Filesystem api from Sandbox ([#112](https://github.com/vercel/sandbox/pull/112))

###### Patch Changes

-   Reuse Undici `Agent` across instances ([#143](https://github.com/vercel/sandbox/pull/143))

-   Smarter fallback team selection for scope inference: tries `defaultTeamId` first, then the best hobby-plan OWNER team (personal team or most recently updated). Filters fallback candidates by `billing.plan === 'hobby'` to avoid selecting pro/enterprise teams. Skips teams that return 403 and shows a helpful error when no team allows sandbox creation. ([#120](https://github.com/vercel/sandbox/pull/120))

-   Add workflow serialization support for the `Snapshot` class via `WORKFLOW_SERIALIZE` / `WORKFLOW_DESERIALIZE`, fixing serialization errors when a `Snapshot` instance is returned from a workflow step. ([#140](https://github.com/vercel/sandbox/pull/140))