Spica is a development engine to build fast & efficient applications.
Latest release 0.20.3 · 27 Oct 2026
20 files for Claude Code and GitHub Copilot: code-storyteller, critical-thinking, debug, plan and 16 more — 10,975 tokens loaded in every session.
.github/copilot-instructions.md A 1,253 tok .github/instructions/atomic-design.instructions.md A 1,815 tok .github/instructions/performance-optimization.instructions.md C 4,642 tok .github/instructions/reactjs.instructions.md A 1,059 tok CLAUDE.md A 2,206 tok .claude/commands/release.md C — .claude/agents/code-storyteller.md A 57 tok .claude/agents/critical-thinking.md A 46 tok .claude/agents/debug.md A 42 tok .claude/agents/plan.md A 42 tok .claude/agents/pr-review-analyst.md A 55 tok .claude/agents/product-manager.md A 37 tok .claude/agents/qa.md A 48 tok .claude/agents/security-reviewer.md A 41 tok .claude/agents/tech-debt.md A 44 tok .github/agents/plan(custom).agent.md A 10 tok .github/agents/qa-subagent.agent.md A 22 tok .github/agents/se-product-manager-advisor.agent.md A 27 tok .github/agents/se-security-reviewer.agent.md A 27 tok .github/agents/tech-debt-remediation-plan.agent.md A 19 tok These files are spica-engine/spica's own configuration — they tell Claude Code and GitHub Copilot how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.