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[ARTICLE · art-27120] src=github.com ↗ pub= topic=ai-tools verified=true sentiment=↑ positive

Zerostack v1.5 – Lightweight Unix-inspired coding agent

Zerostack released v1.5 of its lightweight Unix-inspired coding agent, achieving feature parity with Claude Code on key agent capabilities. The update introduces a redesigned TUI, multi-modal input support, advisors for cost-efficient model routing, and configurable chain-of-prompts, along with various improvements and bug fixes.

read1 min views23 publishedJun 14, 2026

With v1.5, Zerostack has achieved feature parity with Claude Code on the most important agent capabilities, while shipping a new and improved TUI.

Additions:

  • Fully re-designed TUI (w/ new input bar, new status bar & new welcome message; scroll down for screenshot)
  • Added Multi-modal inputs with support for images, audio and PDF (compile gated)
  • Added Advisors, allowing to use cheaper models that can call "expert" LLMs when the task is too difficult
  • Added /review

, which sends a specialized message to the agent based on your current Git context - Added configurable chain-of-prompts, allowing to go from brainstorm

toplan

tocode

and ending with/review

  • Added opt-in pre-configured MCPs for Context7 and Grep.app
  • Added
`--load-prompt`

and`--pure-stdout`

, allowing for better scripts and tools built on top of zerostack - Added support for signaling agent's activity via UNIX sockets, allowing for better scripts and tools built on top of zerostack

  • Added installations via scripts, Nix and Homebrew
  • Added special permissions to allow plan

prompt to writePLAN*.md

files

Improvements:

  • Added ability to select directories using @

  • Improved color rendering

  • Better tool use TUI rendering

  • Improved compaction

  • Improved doom loop detection

  • Improved caching on list of models

  • Added more configuration options

  • Enabled caching on Antrophic models (thanks

[@xavierforge](https://github.com/xavierforge)) - Several optimizations for local LLMs, with more coming during the v1.5.x cycle (thanks
[hal-eisen](https://github.com/hal-eisen)) - Fixed several bugs in git worktree module
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