Claude API takes computer use, the Files API and the Skills API out of beta and adds a browser use tool

Archive entry: this covers an event from August 19, 2026, and we published it on November 8, 2026. The details come from sources dated at the time and may have changed since.

On August 19, 2026, Anthropic took the computer use tool, the Files API and Agent Skills with the Skills API out of beta, so they no longer needed beta headers. Anthropic also launched a browser use toolset, described in its Claude blog post on computer use, the Skills API and the Files API.

What changed in the Claude API

• The computer use tool left beta as computer_toolset_20260801, with no beta header, batch actions (several actions in one turn), zoom on by default and per-member configuration through configs.
• The browser use tool (browser_toolset_20260801) was a client toolset for a browser that the application hosts. It read the page's accessibility tree, elements, forms and tabs, and added element references, form input, tab management, download reporting and opt-in file upload to screenshot-and-click control.
• The Files API no longer required the files-api-2025-04-14 beta header and gained file expiration (expires_in_seconds on upload, expires_at on file objects), page/next_page pagination and an ids[] filter.
• Agent Skills and the Skills API (/v1/skills) no longer required the skills-2025-10-02 beta header, and requests that sent the beta headers anyway kept working.
• The blog post listed 5x higher Files API rate limits and 1 TB of storage per organization, and said computer use was eligible for HIPAA-regulated workloads under Anthropic's BAA.

What it meant for people building agents

Developers building browser and desktop agents on the Claude API could drop beta headers from their requests. The browser use toolset also let them target page elements through references and form input, not only pixels. Earlier computer use beta versions remained available, though moving from computer_20251124 changed the request shape and tool handling.

Availability and sources

Both toolsets supported Claude Fable 5, Claude Mythos 5, Claude Opus 5, Claude Sonnet 5 and Claude Opus 4.8 on the Claude API, and reached Google Cloud on August 20, 2026. The dated entries are in the Claude Platform release notes.

Sources

• Build production agents with computer use, the Skills API, and the Files API (Anthropic (Claude blog), August 20, 2026, official)
• Claude Platform release notes - Claude Platform Docs (Anthropic (Claude Platform Docs), August 19, 2026, official)

Written with AI assistance, strictly from the sources listed above. Before it went live, automated checks verified its dates, sources and every language edition.