On August 19, Anthropic rolled out a batch of changes on the Claude Developer Platform. The heart of it: three features that used to need a beta header are now a fixed part of the offering.
Three betas grow up
The Files API is generally available. You no longer need the files-api header, neither when uploading nor when a message references a file. New in the GA format: files can be uploaded with an expiry (expires_in_seconds), and listing them now gives you pagination plus a filter by IDs. Storage sits at 1 TB per organization, the limit at 500 requests per minute.
Agent Skills and the Skills API are GA too. The skills-2025-10-02 header is gone, including for messages that load skills through the container parameter. If you already built with the header, you don’t have to change anything – the old calls keep working.
And the Admin API for user management for Claude Enterprise organizations is through as well. Members, invites, groups, custom roles – all of it can now be managed without the enterprise beta header.
New controls for Managed Agents
With Managed Agents, you can now limit which sites the web_search and web_fetch tools are even allowed to reach. Use allowed_domains or blocked_domains to block or permit specific ones. On top of that, web_fetch takes a per-page token limit, and web_search takes a location.
Sessions running in a self-hosted sandbox can also attach memory stores. The worker downloads each store to its mount path and syncs the agent’s changes back.
Freshly tidied: the session viewer
The session viewer in the Claude Console has been rebuilt. There’s now a timeline minimap, a transcript grouped by model request, and an Inspector panel with details on cost, raw events, per-tool statistics, and per-thread activity.
My take
“Goes GA” sounds unspectacular, but it isn’t. A beta header always means: this can still change, I wouldn’t put it in production yet. When it drops, the math changes for a lot of teams. Files, Skills, and user management are exactly the building blocks you use for serious applications. The fact that they’re stable now is the real signal behind this release.
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