docker-agent

This release adds agent switching commands, MCP server discovery capabilities, and runtime model switching, along with UI improvements and stability fixes.

What's New

• Adds slash commands for agent switching (e.g., /plan to hand off to planner agent)
• Adds MCP catalog toolset for on-demand discovery and activation of remote MCP servers
• Adds runtime model switching with GET/PATCH/POST endpoints for changing models during sessions
• Adds sampling/createMessage support for MCP servers to use the host's LLM
• Adds identity headers (X-Docker-Agent-Version, X-Docker-Desktop-Version) to built-in tool requests

Improvements

• Renders user pasted content in TUI and collapses large pasted file contents (over 30 lines) into toggleable view
• Routes mouse-wheel events to background dialogs instead of falling through to chat area
• Uses Claude Sonnet 4.6 as default model in Anthropic provider
• Switches to non-preview Gemini model
• Adds configurable thinking expansion in user config

Bug Fixes

• Fixes evaluation builds with legacy Docker builder by using printf instead of heredoc for /run.sh
• Fixes crash prevention by explicitly sending tool_choice=auto in OpenAI requests with tools
• Fixes Desktop version lookup to be TTL-based and context-independent
• Fixes command resolution before agent switching to prevent lookup failures
• Fixes concurrent access issues by using thread-safe methods and improving snapshot isolation

Technical Changes

• Refactors toolset creation into individual packages with standardized naming
• Improves concurrent package with thread-safe methods and uses it across multiple components
• Centralizes context-limit resolution in runtime
• Moves concurrency deduplication from trigger to review workflow in CI
• Updates example configuration to use xai/grok-2-latest model

What's Changed

• fix(evals): build /run.sh with printf so legacy builder works by @hamza-jeddad in https://github.com/docker/docker-agent/pull/2779
• bump github.com/coder/acp-go-sdk from v0.12.2 to v0.13.0 by @dgageot in https://github.com/docker/docker-agent/pull/2782
• docs: update CHANGELOG.md for v1.59.0 by @docker-read-write[bot] in https://github.com/docker/docker-agent/pull/2783
• route mouse-wheel events to background dialogs by @dgageot in https://github.com/docker/docker-agent/pull/2787
• Use a non preview gemini model by @dgageot in https://github.com/docker/docker-agent/pull/2785
• Use sonnet 4.6 as default in anthropic by @rumpl in https://github.com/docker/docker-agent/pull/2786
• feat(tui): show user pasted content by @joshbarrington in https://github.com/docker/docker-agent/pull/2784
• ci: move concurrency dedup from trigger to review workflow by @dgageot in https://github.com/docker/docker-agent/pull/2789
• docs(site): make the docs site feel like part of Docker, and explain what Docker Agent is by @dgageot in https://github.com/docker/docker-agent/pull/2793
• Expand thinking configuration by @rumpl in https://github.com/docker/docker-agent/pull/2802
• fix(examples): use xai/grok-2-latest in grok.yaml by @dgageot in https://github.com/docker/docker-agent/pull/2806
• bump direct go dependencies by @dgageot in https://github.com/docker/docker-agent/pull/2803
• feat: add X-Docker-Agent-Version and X-Docker-Desktop-Version headers to built-in tools by @dgageot in https://github.com/docker/docker-agent/pull/2795
• Improve concurrent package by @dgageot in https://github.com/docker/docker-agent/pull/2810
• bump direct go dependencies by @dgageot in https://github.com/docker/docker-agent/pull/2811
• feat(mcp): add sampling/createMessage support by @dgageot in https://github.com/docker/docker-agent/pull/2815
• fix(runtime): use provider_opts.context_size for compaction by @dgageot in https://github.com/docker/docker-agent/pull/2814
• fix(openai): explicitly send tool_choice=auto when tools are provided by @dgageot in https://github.com/docker/docker-agent/pull/2813
• Better tool registry by @dgageot in https://github.com/docker/docker-agent/pull/2807
• feat(api): accept model overrides on session creation and add runtime model switching endpoints by @dgageot in https://github.com/docker/docker-agent/pull/2791
• feat: add mcp_catalog toolset for on-demand MCP server discovery by @dgageot in https://github.com/docker/docker-agent/pull/2794
• feat: add slash commands for agent switching by @dgageot in https://github.com/docker/docker-agent/pull/2790

Full Changelog: https://github.com/docker/docker-agent/compare/v1.59.0...v1.60.0