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Tuesday, March 17, 2026

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[Release] anthropics/claude-code v2.1.77: v2.1.77

ashwin-antMar 17, 2026

Claude Code v2.1.77 introduces significant improvements to token limits for Claude Opus and Sonnet models (up to 128k), enhances sandbox filesystem controls with `allowRead` settings, and fixes numerous critical bugs affecting bash commands, memory management, API tracking, and terminal UI interactions. The release also improves performance with faster startup times and session resumption, better plugin validation, and refined agent communication workflows.

  • Increased default max output tokens to 64k for Claude Opus 4.6 and upper bound to 128k for both Opus 4.6 and Sonnet 4.6 models
  • Added `allowRead` sandbox filesystem setting to selectively re-enable read access within `denyRead` regions
  • Enhanced `/copy` command to accept optional index parameter for copying specific assistant responses (e.g., `/copy N`)
  • +7 more key points...
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MCP Servers

GH

[Repo] modelcontextprotocol/experimental-ext-variants: Status: Experimental. This repository provides a multi-language reference implementation of the variants proposal for the Model Context Protocol (MCP), as described in SEP-2053.

This experimental repository provides a multi-language reference implementation of the variants proposal for the Model Context Protocol (MCP), as specified in SEP-2053. It demonstrates how to extend MCP with variant support across multiple programming languages. The project is actively maintained with recent updates and serves as a blueprint for implementing protocol extensions.

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GH

[Repo] modelcontextprotocol/example-remote-server: A hosted version of the Everything server - for demonstration and testing purposes, hosted at https://example-server.modelcontextprotocol.io/mcp

The example-remote-server is a hosted demonstration of the Model Context Protocol (MCP) Everything server, publicly accessible at https://example-server.modelcontextprotocol.io/mcp. Built in TypeScript, it serves as a reference implementation and testing ground for developers integrating with MCP. This repository provides a live, working example of how to deploy and expose MCP server capabilities remotely.

39%
YT

Introducing Google ADK Studio!

Google ADK Studio is an open-source visual development UI designed to simplify agent development using Google's Agent Development Kit (ADK). It eliminates the need for manual configuration wrangling by providing an intuitive interface for building and managing AI agents. The platform streamlines the agent development workflow, making it more accessible to developers of varying skill levels.

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