{"repo":"pacifio/cersei","free":true,"listed":false,"github":"https://github.com/pacifio/cersei","clone":"git clone https://github.com/pacifio/cersei.git","description":"The Rust SDK for building coding agents. Tools, streaming, graph, sub-agent orchestration, MCP — as composable functions","language":"Rust","stars":442,"topics":["agent","antrophic","claude-code","codex","coding-agent","openai","opencode","rust"],"license":"MIT","category":"ai-agents","readme_excerpt":"Cersei The complete Rust SDK for building coding agents. Cersei gives you every building block of a production coding agent — tool execution, LLM streaming, sub-agent orchestration, persistent memory, skills, MCP integration — as composable library functions. Build a Claude Code replacement, embed an agent in your app, or create something entirely new. MIT License Built by Adib Mohsin Docs GitHub --- Why Cersei Claude Code OpenCode Cersei SDK Abstract CLI --- --- --- --- --- Form factor CLI app CLI app Library CLI app Embeddable No No Yes No (uses SDK) Provider Anthropic only Multi-provider Multi-provider Multi-provider Language TypeScript TypeScript Rust Rust Custom tools Plugins Plugins impl Tool / #[derive(Tool)] Via SDK Startup 269ms 300ms N/A (library) 34ms Binary / RSS 174MB / 330MB — N/A 5.8MB / 4.9MB Memory File-based SQLite File + Graph File + Graph Skills .claude/commands/ .claude/skills/ Both formats Both formats Cersei is built from the architecture of Claude Code (reverse-engineered Rust port) and designed so that anyone can build a complete, drop-in replacement for Claude Code, OpenCode, or any coding agent — as a library call. --- Abstract — The CLI Abstract is a complete CLI coding agent built on Cersei. One binary, zero runtime dependencies, graph memory by default. Abstract vs Claude Code All numbers from run tool bench.sh --full . Metric Abstract Claude Code Winner -------- ---------- ------------- -------- Startup (warm) 32ms 266ms Abstract (8.2x) Binary s","default_branch":null,"files":null,"tree":[],"storefront":"/r/pacifio","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/pacifio/cersei/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}