ClaudeDevs

Official updates for developers building with @ClaudeAI

[ClaudeDevs @ClaudeDevs]

We've given all Pro, Max, Ultra, and Team users one free full reset, across all models and limits. Use it anytime before December 10 at 2:00PM PT.

We recently fixed a few small issues that used more limits than intended, and the Fable resets didn't do much for those of you who'd already hit your weekly limits for all models. While these issues didn't affect everyone, we want to make up for the trouble.

You'll find it in Settings > Usage, or at https://t.co/5YRzheAZyQ.

[ClaudeDevs @ClaudeDevs]

These capabilities are rolling out in public preview. Implementation details may change as we work with the MCP Apps community to standardize them.

Get started: https://t.co/X4ioqGu3A1

[ClaudeDevs @ClaudeDevs]

Claude now supports more of the MCP Apps extension, such as app tools and embedded sites, so your full app can run inside Claude.

Start building: https://t.co/X4ioqGu3A1

[Claude @claudeai]

Also new: with interactive connectors, you can now open the full version of a tool inside Claude. Work in Adobe, Atlassian, and Box beside your conversation. Make changes yourself, or ask Claude to make them with you.

Rolling out on web and desktop.

[ClaudeDevs @ClaudeDevs]

And because your MCP App ships with your MCP server, it isn’t limited to Claude. It can run in any AI application that supports the extension.

[ClaudeDevs @ClaudeDevs]

Which Claude model should you build with?

Our new guide breaks down when to use Fable 5.2, Opus 5.5, Sonnet or Haiku. It also covers when to adjust effort instead of switching models, and how to save cost by putting subagents on smaller models.

https://t.co/1VmXqhkZB0

[ClaudeDevs @ClaudeDevs]

We're giving Ultra and Team Premium users Fable resets based on how long you've subscribed:

<6 mo: 1
6–12 mo: 2
>12 mo: 3

Use them anytime by March 8.

Pro and Team Standard get a week to try Fable 5.2, up to half your weekly limit, plus one reset. https://t.co/5qghe1jhxP

[ClaudeDevs @ClaudeDevs]

Fable 5.2 is now available in the Claude Platform and Claude Code.

It’s up to 30% faster than Fable 5.1, and costs $8/$40 per 1M tokens, down from $10/$50.

[Claude @claudeai]

Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges.

They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision.

[ClaudeDevs @ClaudeDevs]

To help prevent distillation, preserved thinking now covers all API accounts on Fable 5.2.

Editing prior context can 400. Use compaction, context editing, or mid-conversation system messages. Claude Code, Managed Agents & Agent SDK handle this for you.

https://t.co/Yx5HgnclgT

[ClaudeDevs @ClaudeDevs]

We've made it easier to get your repo running in Claude Code cloud sessions on Pro, Max, and Ultra.

Claude figures out what dependencies, network access, and API keys it needs, then saves the environment for next time. API keys are saved securely, so Claude never sees them.

[ClaudeDevs @ClaudeDevs]

The subagent itself keeps its own model. Sessions with background subagents used about 5% less of the limit, so the same limit gets you about 6% more prompts.

It's live for most Pro, Max and Ultra users and for everyone on Team and Enterprise. Update to v2.1.316+.

[ClaudeDevs @ClaudeDevs]

Background subagents in Claude Code now use less of your usage limit.

A running subagent updates its status line every 30 seconds, and each update used to re-read its whole conversation. Now Haiku 5.5 writes it from short notes instead, so each update costs about 99% less.

[ClaudeDevs @ClaudeDevs]

If you’re building plugins for Claude, you can add support today:

https://t.co/XbsRhyXIT5

[ClaudeDevs @ClaudeDevs]

Users can now auto-connect plugins when they log in to Claude, with MCP servers that accept Claude as a trusted issuer.

If you’re building plugins for Claude, add support so users get started faster and stay connected without re-authorizing.

[ClaudeDevs @ClaudeDevs]

Auto-connect with Claude as the trusted issuer is in beta on Team and Enterprise plans. Available with Amplitude, https://t.co/FSukTXOY1Y, Atlassian, Datadog, Dropbox, Figma, Granola, HubSpot, Linear, Mixpanel, Notion, PagerDuty, Semrush, and Supabase.

[ClaudeDevs @ClaudeDevs]

To see all that we shipped in October, make sure to check out the changelog. Looking forward to November!

https://t.co/HgsYYimEJW

[ClaudeDevs @ClaudeDevs]

October was a big month for Claude Code 🍁

We shipped mods, made the desktop app better at running lots of sessions side by side, gave you more insight into where your usage goes, and plenty more. Here's a recap!

[ClaudeDevs @ClaudeDevs]

And a few smaller ones:

- Cloud sessions now start setting up while you’re still typing your prompt, so there's less waiting after you hit send
- You can click any line in a cloud session's diff and leave a comment, and it goes to Claude with your next message
- Max, Ultra and Team plans now include a monthly API credit for building with the Claude API and Agent SDK
- MCP servers that support it can ask you a follow-up question mid-task, and run long jobs in the background