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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 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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