#6262nd of 143 in Coding agents and AI editors
costrict
AI coding assistant for VS Code, JetBrains and CLI with a spec-driven workflow
Documentation ↗
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- Stars
- 4.5k
- License
- Apache-2.0
- Last commit
- Sep 2026
- Last release
- Sep 2026
- Language
- TypeScript
Missed the latest GitHub check; these facts may be older.
Overview
CoStrict is an AI coding assistant that runs as a VS Code extension, a JetBrains plugin and a CLI. Its Strict Mode walks through requirements analysis, architecture design, task planning and test generation. It also offers free-form chat coding, repository-wide RAG code review, MCP, skills and OpenSpec integration. It connects to Anthropic, OpenAI, OpenAI-compatible APIs and local models.
Who it is for: Enterprise teams wanting a spec-driven coding assistant inside their IDE
Strengths
- Strict Mode enforces requirements, design, task planning and test steps before code generation
- Ships as VS Code extension, JetBrains plugin and CLI
- Accepts Anthropic, OpenAI, OpenAI-compatible and local models, plus built-in free models
- Supports MCP, skills and OpenSpec change proposals
Weaknesses
- JetBrains plugin lives in a separate repository
- README gives no hardware requirements or deployment details; those are in external docs
- Built on Roo Code and OpenCode, so features overlap with those projects
- Built-in free models are not named and their limits are not described
What it needs
- Needs VS Code or JetBrains IDE
- Models: Anthropic, OpenAI, OpenAI-compatible APIs, local models
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