Claude's computer use, browser use and Skills API leave beta
Five betas go GA and a genuinely new browser tool lands; dropping the old headers quietly changes Files pagination — plus fresh MCP and multi-model tooling.
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Five betas, zero headers
Computer use (computer_toolset_20260801), browser use (browser_toolset_20260801), the Files API (/v1/files), the Skills API (/v1/skills) and Enterprise Admin user-management all went GA — you can drop the beta headers entirely. Old headers still work and no sunset dates were published, so the migration is on your schedule.
Browser use is a new tool, not a rename
Browser use isn't computer use with a new label: it drives an app-hosted browser through the accessibility tree instead of reading pixels, so it's cheaper and steadier for web tasks but needs its own eval and wiring. Computer use stays the pixel-reading option for everything else on screen.
The header you delete can break your list calls
Dropping files-api-2025-04-14 silently switches Files list pagination from cursors to page/next_page, and unresolved file IDs now get omitted instead of throwing. Computer use's batched multi-action turns also demand a tool_result block for every skipped action. Test before you strip headers in prod.
Elsewhere: run server-side tools against 179 models
Simon Willison's llm-openrouter 0.7 adds server-side Shell, WebFetch and WebSearch tools (enable with, e.g., -T WebSearch) plus reasoning traces via OpenRouter's Responses API — so one CLI can now execute tools against roughly 179 models. Upgrade with pip install -U llm-openrouter.
Elsewhere: fine-grained write controls for MCP agents
Cloudflare's WriteGuard (private beta) lets you gate which tools a remote MCP server actually exposes to an agent — waving through reads while holding writes for approval — closing the "the agent can call anything" gap without rewriting the server.