# browser-use 0.13.8

- Product: browser-use (https://whatsnew.fyi/product/browser-use)
- Vendor: browser-use
- Date: 2026-08-16
- Version: 0.13.8
- Original notes: https://github.com/browser-use/browser-use/releases/tag/0.13.8
- Permalink: https://whatsnew.fyi/product/browser-use/releases/0.13.8

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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- **changed** — Update Cerebras model IDs and default
- **fixed** — Recover Anthropic tool arguments when the model serializes its call as text
- **fixed** — Guard last_action() against empty action list
- **fixed** — Guard _inject_budget_warning against ZeroDivisionError
- **fixed** — Return Path from validate_user_data_dir when creating temp dir
- **changed** — Use UTF-8 for agent file writes
- **fixed** — Clamp final chunk char_end to len(content) for trailing newline
- **fixed** — Do not expose domain-restricted actions on an empty URL
- **fixed** — Give each MessageManager its own state to prevent mutable default argument issues
- **fixed** — Fix stackingContexts access type mismatch
- **fixed** — Export documented LLM chat models
- **fixed** — Fix variable shadowing in Element.click() error handling
- **fixed** — Fire complete callbacks for remote-browser downloads
- **fixed** — Read structured output from tool calls for Groq tool-calling models
- **fixed** — Fix ChatAnthropicBedrock.ainvoke() IndexError on an empty response.content list
- **fixed** — Avoid re-raising task callback errors
- **fixed** — Apply storage_state cookies when passed as an in-memory dict
- **fixed** — Restore SearchGoogleAction back-compat alias
- **fixed** — Fix Mouse.scroll() silently redirecting an explicit x=0/y=0 to viewport center
- **fixed** — Fix DOMTreeSerializer leaking paint-order-occluded text to the LLM

##### What's Changed
* Update Cerebras model IDs and default by @ryanl-cerebras in https://github.com/browser-use/browser-use/pull/5323
* Recover Anthropic tool arguments when the model serializes its call as text by @ElayGelbart in https://github.com/browser-use/browser-use/pull/5330
* docs: replace broken profile sync link by @Hardik180704 in https://github.com/browser-use/browser-use/pull/5332
* fix(agent): guard last_action() against empty action list by @itxaiohanglover in https://github.com/browser-use/browser-use/pull/5103
* fix(agent): guard _inject_budget_warning against ZeroDivisionError by @itxaiohanglover in https://github.com/browser-use/browser-use/pull/5107
* fix(browser): return Path from validate_user_data_dir when creating temp dir by @itxaiohanglover in https://github.com/browser-use/browser-use/pull/5114
* Use UTF-8 for agent file writes by @Ghraven in https://github.com/browser-use/browser-use/pull/5309
* fix(dom): clamp final chunk char_end to len(content) for trailing newline by @Diwak4r in https://github.com/browser-use/browser-use/pull/5175
* fix(registry): do not expose domain-restricted actions on an empty URL by @abhay-codes07 in https://github.com/browser-use/browser-use/pull/5204
* fix(agent): give each MessageManager its own state (mutable default arg) by @abhay-codes07 in https://github.com/browser-use/browser-use/pull/5205
* fix(dom): fix stackingContexts access type mismatch by @itxaiohanglover in https://github.com/browser-use/browser-use/pull/5104
* fix: export documented LLM chat models by @Karunasagar12 in https://github.com/browser-use/browser-use/pull/5182
* Fix variable shadowing in Element.click() error handling by @Gaurav0807 in https://github.com/browser-use/browser-use/pull/5089
* fix(downloads): fire complete callbacks for remote-browser downloads by @sergioperezcheco in https://github.com/browser-use/browser-use/pull/5264
* fix(llm): read structured output from tool calls for Groq tool-calling models by @VenkateswarluNagineni in https://github.com/browser-use/browser-use/pull/5240
* Fix ChatAnthropicBedrock.ainvoke() IndexError on an empty response.content list by @chuenchen309 in https://github.com/browser-use/browser-use/pull/5233
* fix(async): avoid re-raising task callback errors by @GautamSharma99 in https://github.com/browser-use/browser-use/pull/5285
* fix(browser): apply storage_state cookies when passed as an in-memory dict by @ayaangazali in https://github.com/browser-use/browser-use/pull/5262
* fix(tools): restore SearchGoogleAction back-compat alias by @LHMQ878 in https://github.com/browser-use/browser-use/pull/5318
* Fix Mouse.scroll() silently redirecting an explicit x=0/y=0 to viewport center by @chuenchen309 in https://github.com/browser-use/browser-use/pull/5231
* Fix DOMTreeSerializer leaking paint-order-occluded text to the LLM by @chuenchen309 in https://github.com/browser-use/browser-use/pull/5225
* fix(mcp): mark read-only MCP tools with readOnlyHint annotations by @ayaangazali in https://github.com/browser-use/browser-use/pull/5246
* fix(mcp): surface CallToolResult.isError as a failed ActionResult by @chuenchen309 in https://github.com/browser-use/browser-use/pull/5235
* fix(agent): close PIL images after GIF creation to prevent resource leak by @itxaiohanglover in https://github.com/browser-use/browser-use/pull/5105
* fix: include exception details in coordinate click and add missing error logs by @shotsan in https://github.com/browser-use/browser-use/pull/5379
* docs: refresh the Open Source vs Cloud plot with Cloud v4 by @Alezander9 in https://github.com/browser-use/browser-use/pull/5388
* docs: show the hosted agent API call in the README by @Alezander9 in https://github.com/browser-use/browser-use/pull/5394
* fix(utils): prevent redact_sensitive_string cascade corruption by @santhreal in https://github.com/browser-use/browser-use/pull/5211
* Bump aiohttp and pypdf security pins by @sauravpanda in https://github.com/browser-use/browser-use/pull/5326
* f

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