{"slug":"claudine","name":"Claudine","vendor":"Xemantic","tagline":"Kotlin autonomous agent with Unix-wide tool access that can rewrite its own prompts and tools, built for teaching harness engineering","url":"https://agentboards.org/agent/claudine","website":"https://github.com/xemantic/claudine","docs":null,"repo":"https://github.com/xemantic/claudine","category":"harness","execution":["local"],"license":"GPL-3.0","open_source":true,"pricing":{"model":"byok","summary":"Free and open source under GPL-3.0; you pay the model provider you configure\n","from_usd":0,"free_tier":true,"byok":true},"models":{"backbone":["Anthropic"],"bring_your_own_model":true,"local_models":false},"protocols":{"mcp_client":false,"mcp_server":false,"openapi":false},"capabilities":{"terminal_exec":true,"browser":true,"multi_file_edit":true,"git_ops":true,"docker_sandbox":false,"multi_agent":false,"headless_ci":false},"context_window":null,"platforms":["macos","linux"],"install":[{"label":"Gradle (native binary)","command":"./gradlew -PbuildNative=true build"}],"benchmarks":[],"tags":["open-source","kotlin","harness","self-modifying","research"],"github_stars":179,"metrics":{"stars":179,"pushed_at":"2026-06-24T11:45:56Z","archived":false,"open_issues":4,"latest_version":null,"latest_version_at":null,"latest_version_url":null,"version_source":null,"checked_at":"2026-10-02T05:04:59.604Z"},"sources":{"overview":"https://github.com/xemantic/claudine","capabilities":"https://github.com/xemantic/claudine","models":"https://github.com/xemantic/claudine","license":"https://github.com/xemantic/claudine","install":"https://github.com/xemantic/claudine"},"verified_at":"2026-09-04","adoption":{"score":0,"signals":{"github_stars":179,"hn_mentions_1y":1},"measured_at":"2026-09-21"},"scores":{"panel":4.7,"adoption":0,"spread":2,"facts":6.7,"board":4.3,"dimensions":{"reliability":3.8,"usefulness":4.2,"cost":6.7,"longevity":4.2},"per_persona":{"amigo":5.5,"critico":4.3,"profesor":4.8,"inversora":4.8,"jefa":3.5,"hacker":5.5},"community":null},"rank":null,"category_rank":194,"panel_reviews":[{"persona":"juez","persona_name":"El Juez","ai_generated":true,"verdict":"El Amigo says this is teaching material and La Jefa says it is a security incident waiting for a calendar slot, and both are describing the same feature.","scores":null,"evidence":[]},{"persona":"amigo","persona_name":"El Amigo","ai_generated":true,"verdict":"Pick this if you want to understand how a harness works from the inside; pick a maintained terminal agent if you want to finish a ticket this afternoon.","scores":{"reliability":4,"usefulness":5,"cost":8,"longevity":5},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"critico","persona_name":"El Crítico","ai_generated":true,"verdict":"It is documented as able to rewrite its own prompts, modify its algorithmic logic and add its own tools, which makes every reproduction report a different program.","scores":{"reliability":3,"usefulness":4,"cost":6,"longevity":4},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"profesor","persona_name":"El Profesor","ai_generated":true,"verdict":"The loop targets a single model vendor, which buys a tighter tool protocol today and makes the design's survival depend on decisions made at one company.","scores":{"reliability":4,"usefulness":5,"cost":6,"longevity":4},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"inversora","persona_name":"La Inversora","ai_generated":true,"verdict":"Xemantic sells workshops and research, so the code is the syllabus rather than the asset, and a hundred and seventy-seven stars is the marketing return on it.","scores":{"reliability":4,"usefulness":4,"cost":7,"longevity":4},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"jefa","persona_name":"La Jefa","ai_generated":true,"verdict":"It is documented as taking full access to the machine and the internet, which is the single sentence that ends a security review before anyone asks about seats.","scores":{"reliability":2,"usefulness":2,"cost":7,"longevity":3},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"hacker","persona_name":"El Hacker","ai_generated":true,"verdict":"GPL-3.0 and a native binary from one Gradle invocation, so the fork is mine forever — but one model vendor, no local weights and no MCP client is a narrow room.","scores":{"reliability":6,"usefulness":5,"cost":6,"longevity":5},"evidence":["https://github.com/xemantic/claudine"]},{"persona":"comediante","persona_name":"El Comediante","ai_generated":true,"verdict":"The Windows native build is still in progress, which is also a fair status report for an agent that keeps rewriting itself.","scores":null,"evidence":[]}]}