docker/docker-agent v1.32.5

on GitHub

This release improves agent reliability and performance with better tool loop detection, enhanced MCP handling, and various bug fixes.

What's New

• Adds framework-level tool loop detection to prevent degenerate agent loops when the same tool is called repeatedly
• Adds support for dynamic command expansion in skills using !\command`` syntax
• Adds support for running skills as isolated sub-agents via context: fork frontmatter
• Adds CLI flags (--hook-pre-tool-use, --hook-post-tool-use, etc.) to override agent hooks from command line
• Adds stop and notification hooks with session lifecycle integration

Improvements

• Reworks thinking budget system to be opt-in by default with adaptive thinking and effort levels
• Caches syntax highlighting results for code blocks to improve markdown rendering performance
• Optimizes MCP catalog loading with single fetch per run and ETag caching
• Derives meaningful names for external sub-agents instead of using generic 'root' name
• Optimizes filesystem tool performance by avoiding duplicate string allocations
• Speeds up history loading with ReadFile and strconv.Unquote optimizations

Bug Fixes

• Fixes context cancelling during RAG initialization and query operations
• Fixes frozen spinner during MCP tool loading
• Fixes model name display in TUI sidebar for all model types
• Fixes two data races in shell tool execution
• Fixes character handling issues in tmux integration
• Fixes binary download URLs in documentation to match release artifact naming
• Validates thinking_budget effort levels at parse time and rejects unknown values

Technical Changes

• Removes unused methods from codebase
• Hardens and simplifies MCP gateway code
• Adds logging for selected model in Agent.Model() for better observability
• Fixes pool_size reporting to reflect actual selection pool
• Reverts timeout changes for remote MCP initialization and tool calls

What's Changed

• Fix rag init context cancel by @gtardif in #2114
• docs: update CHANGELOG.md for v1.32.4 by @docker-read-write[bot] in #2112
• Bump dependencies by @dgageot in #2113
• Fix frozen spinner during MCP tool loading by @dgageot in #2115
• Support dynamic command expansion in skills (!command syntax) by @dgageot in #2116
• Fix model name display in TUI sidebar for all model types by @dgageot in #2118
• perf(markdown): cache syntax highlighting results for code blocks by @dgageot in #2119
• feat: framework-level tool loop detection by @derekmisler in #2123
• Fix issues on builtin filesystem tools by @dgageot in #2125
• Fix two data races in shell tool by @dgageot in #2127
• Fix a few characters for tmux by @dgageot in #2128
• Simplify MCP catalog loading: single fetch per run with ETag caching by @dgageot in #2124
• docs: fix binary download URLs to match release artifact naming by @dgageot in #2129
• More doc fixing with "agent serve mcp" by @gtardif in #2130
• Rework thinking budget: opt-in by default, adaptive thinking, effort levels by @dgageot in #2121
• Add timeouts to remote MCP initialization and tool calls by @dgageot in #2131
• Optimize start time by @dgageot in #2138
• gateway: harden and simplify MCP gateway code by @dgageot in #2133
• Derive meaningful names for external sub-agents instead of using 'root' by @dgageot in #2132
• Add --hook-* CLI flags to override agent hooks from the command line by @dgageot in #2135
• feat: support running skills as isolated sub-agents via context: fork by @dgageot in #2137
• Revert "Add timeouts to remote MCP initialization and tool calls" by @dgageot in #2141
• Add stop and notification hooks, wire up session lifecycle hooks by @dgageot in #2136
• Reject unknown thinking_budget effort levels at parse time by @dgageot in #2142
• Log selected model in Agent.Model() for alloy observability by @derekmisler in #2134

Full Changelog: v1.32.4...v1.32.5