{"slug":"cersei","name":"Cersei","vendor":"Adib Mohsin","tagline":"Rust SDK exposing the building blocks of a coding agent as library functions, with a single-binary CLI built on it","url":"https://agentboards.org/agent/cersei","website":"https://cersei.tryatlas.cc/docs/","docs":"https://cersei.tryatlas.cc/docs/","repo":"https://github.com/pacifio/cersei","category":"framework","execution":["local"],"license":"MIT","open_source":true,"pricing":{"model":"byok","summary":"Free and MIT-licensed as a Rust crate; you supply the provider key, or run against a local Ollama or vLLM endpoint","from_usd":0,"free_tier":true,"byok":true},"models":{"backbone":["Anthropic","OpenAI","Ollama","Azure OpenAI","vLLM"],"bring_your_own_model":true,"local_models":true},"protocols":{"mcp_client":true,"mcp_server":false,"openapi":false},"capabilities":{"terminal_exec":true,"browser":true,"multi_file_edit":true,"git_ops":true,"docker_sandbox":false,"multi_agent":true,"headless_ci":true},"context_window":null,"platforms":["macos","linux"],"install":[{"label":"cargo (SDK)","command":"cargo add --git https://github.com/pacifio/cersei cersei"},{"label":"cargo (Abstract CLI)","command":"cargo install --path crates/abstract-cli"}],"benchmarks":[],"tags":["open-source","rust","embeddable","sdk","graph-memory","skills","mcp"],"github_stars":460,"metrics":{"stars":460,"pushed_at":"2026-08-06T19:19:33Z","archived":false,"open_issues":10,"latest_version":null,"latest_version_at":null,"latest_version_url":null,"version_source":null,"checked_at":"2026-10-02T05:04:52.212Z"},"sources":{"readme":"https://github.com/pacifio/cersei","docs":"https://cersei.tryatlas.cc/docs/","install":"https://github.com/pacifio/cersei","license":"https://github.com/pacifio/cersei/blob/main/LICENSE","capabilities":"https://github.com/pacifio/cersei"},"verified_at":null,"adoption":{"score":0.6,"signals":{"github_stars":457},"measured_at":"2026-09-21"},"scores":{"panel":6.2,"adoption":0.6,"spread":2.3,"facts":3.5,"board":5,"dimensions":{"reliability":5.7,"usefulness":6,"cost":8.3,"longevity":4.7},"per_persona":{"amigo":6.8,"critico":5.8,"profesor":6,"inversora":5.8,"jefa":5.3,"hacker":7.5},"community":null},"rank":null,"category_rank":101,"panel_reviews":[{"persona":"juez","persona_name":"El Juez","ai_generated":true,"verdict":"El Hacker and La Jefa are five points apart on the same crate, and the disagreement is about whether a library is supposed to be governable at all.","scores":null,"evidence":[]},{"persona":"amigo","persona_name":"El Amigo","ai_generated":true,"verdict":"Pick it when the agent belongs inside your application; pick a terminal agent when you only want something to edit the repository while you watch.","scores":{"reliability":6,"usefulness":7,"cost":9,"longevity":5},"evidence":["https://github.com/pacifio/cersei","https://cersei.tryatlas.cc/docs/"]},{"persona":"critico","persona_name":"El Crítico","ai_generated":true,"verdict":"The design is derived from another vendor's agent, and the crate is installed from a git reference rather than a released version, so there is nothing to pin against upstream drift.","scores":{"reliability":5,"usefulness":6,"cost":8,"longevity":4},"evidence":["https://github.com/pacifio/cersei","https://cersei.tryatlas.cc/docs/"]},{"persona":"profesor","persona_name":"El Profesor","ai_generated":true,"verdict":"The startup, memory and throughput comparison against Claude Code was produced by a script that ships in the repository under test, which makes it a self-report.","scores":{"reliability":6,"usefulness":6,"cost":7,"longevity":5},"evidence":["https://github.com/pacifio/cersei","https://cersei.tryatlas.cc/docs/"]},{"persona":"inversora","persona_name":"La Inversora","ai_generated":true,"verdict":"One named author, 453 stars, no company and nothing to charge for: the acquisition risk is zero here because there is no asset an acquirer could buy.","scores":{"reliability":5,"usefulness":6,"cost":8,"longevity":4},"evidence":["https://github.com/pacifio/cersei","https://cersei.tryatlas.cc/docs/"]},{"persona":"jefa","persona_name":"La Jefa","ai_generated":true,"verdict":"Nothing per seat across sixty engineers, and nothing to administer either: no directory integration, no central policy, and no record I could hand to an auditor.","scores":{"reliability":4,"usefulness":4,"cost":9,"longevity":4},"evidence":["https://github.com/pacifio/cersei","https://cersei.tryatlas.cc/docs/"]},{"persona":"hacker","persona_name":"El Hacker","ai_generated":true,"verdict":"MIT, my key or no key at all, and a local vLLM or Ollama server is a first-class provider rather than a compatibility footnote.","scores":{"reliability":8,"usefulness":7,"cost":9,"longevity":6},"evidence":["https://github.com/pacifio/cersei","https://github.com/pacifio/cersei/blob/main/LICENSE"]},{"persona":"comediante","persona_name":"El Comediante","ai_generated":true,"verdict":"It reads Claude Code's skills files and writes Claude Code's session files, so the migration path is helpfully signposted in one direction.","scores":null,"evidence":[]}]}