{"adoption": {"forks": 335, "observed_at": "2026-08-28T04:06:16.350571+00:00", "stars": 2117}, "canonical_url": "https://ross.abutalabs.com/products/fit-framework", "card": {"archived": false, "artifact_type": "framework", "description": "FIT: 企业级AI开发框架，提供多语言函数引擎（FIT）、流式编排引擎（WaterFlow）及Java生态的LangChain替代方案（FEL）。原生/Spring双模运行，支持插件热插拔与智能聚散部署，无缝统一大模型与业务系统。", "domain": ["artificial-intelligence", "large-language-models", "developer-tools", "backend", "microservices"], "enriched": true, "function": ["agent-framework", "rag", "llm-inference", "workflow-automation", "plugin-system", "rpc", "web-framework"], "health_score": 81, "homepage": "https://modelengine-ai.net", "language": "Java", "license": "MIT", "license_family": "permissive", "maturity": "active", "member_repos": ["ModelEngine-Group/fit-framework"], "name": "ModelEngine-Group/fit-framework", "platform": ["jvm", "python", "cross-platform"], "pushed_at": "2026-03-13T03:40:21+00:00", "repo": "ModelEngine-Group/fit-framework", "stars": 2117, "tags": ["java-ai-framework", "langchain-alternative", "flow-orchestration", "hot-pluggable-plugins", "polyglot-functions", "spring-integration", "fel", "ai-agents", "retrieval-augmented-generation"], "topics": ["ai", "java", "python", "agentic-ai", "plugin", "plugin-system"], "urls": [], "use_cases": ["build LLM-powered applications in Java without switching to Python", "replace LangChain with a Java-native alternative", "orchestrate RAG retrieval pipelines with vector stores", "build AI agents with prompts and tool delegation", "compose business logic as streaming flows", "switch a monolith to distributed services without code changes", "hot-load plugins into a running AI application"], "what_it_is": "FIT is an enterprise-grade AI development framework for the Java ecosystem, combining a polyglot function engine (Java/Python/C++), a streaming orchestration engine (WaterFlow), and FEL, a LangChain-style LLM application library for Java. It runs natively or within Spring, supports hot-pluggable plugins, and transparently switches between monolithic and distributed deployment.", "when_to_avoid": ["your stack is Python-first and LangChain/LlamaIndex already fit", "you need a mature ecosystem with extensive community integrations", "you only need a simple LLM API wrapper without orchestration", "you require guaranteed long-term stability for a very young framework"], "when_to_choose": ["your team is Java-centric and wants AI/LLM capabilities in the existing stack", "you need both graphical and declarative flow orchestration", "you want transparent local/remote call routing across monolith and microservice deployments", "you need hot-swappable plugin architecture for AI services"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/fit-framework", "repo": "ModelEngine-Group/fit-framework", "role": "main", "score": 66}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:16.350571+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:53:07.445633+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d83409b6506b042a39ab074557aeccae739eda52d193f5feceb46e150c04e57b", "fetched_at": "2026-08-28T04:06:16.350571+00:00", "kind": "readme", "missing": false, "url": "https://github.com/ModelEngine-Group/fit-framework"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 72, "longevity": 39, "rhythm": 74}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 557, "days_push": 173, "days_rel": 173, "gap_med": 14.0, "n_releases_24m": 21}, "score": 66, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}