{"adoption": {"forks": 1570, "observed_at": "2026-08-28T04:11:20.485101+00:00", "stars": 17863}, "canonical_url": "https://ross.abutalabs.com/products/agent-lightning", "card": {"archived": false, "artifact_type": "framework", "description": "The absolute trainer to light up AI agents.", "domain": ["large-language-models", "reinforcement-learning", "machine-learning"], "enriched": true, "function": ["llm-training", "reinforcement-learning", "agent-framework", "llm-inference"], "health_score": 100, "homepage": "https://microsoft.github.io/agent-lightning/", "language": "Python", "license": "MIT", "license_family": "permissive", "maturity": "active", "member_repos": ["microsoft/agent-lightning"], "name": "microsoft/agent-lightning", "platform": ["python"], "pushed_at": "2026-08-26T09:50:07+00:00", "repo": "microsoft/agent-lightning", "stars": 17863, "tags": ["agentic-rl", "verl", "vllm", "mlops", "rl-training", "agent-harness", "swe-bench", "ai-agents", "kubernetes", "docker", "gpu", "linux"], "topics": ["agent", "agentic-ai", "llm", "mlops", "reinforcement-learning"], "urls": [], "use_cases": ["train an LLM agent with reinforcement learning", "fine-tune a coding agent on SWE-bench tasks", "run RL training rollouts on Kubernetes", "capture agent interactions as training data without changing agent code", "improve a Qwen model's agentic coding performance with RL"], "what_it_is": "Agent Lightning is a lightweight (~3,500-line) agentic reinforcement learning framework from Microsoft for training LLM-powered agents with their real harnesses. It proxies model requests to capture training data, runs rollouts locally or as Kubernetes Jobs, and uses verl/vLLM for policy updates.", "when_to_avoid": ["you only need simple supervised fine-tuning or prompt engineering rather than agentic RL", "you lack GPU infrastructure or don't want a verl/vLLM dependency stack", "you need a turnkey commercial product rather than a research-oriented framework"], "when_to_choose": ["you want to RL-train agents while keeping their existing tools, control flow, and environments unchanged", "you need Kubernetes-native rollout execution without external sandbox services", "you want a minimal, hackable RL training stack built on verl and vLLM"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/agent-lightning", "repo": "microsoft/agent-lightning", "role": "main", "score": 85}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:11:20.485101+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:02:26.043328+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "a0fd16ebb7cc58ebd91c1c74f9418561fb8064ad16d492c4dfd87c5e00ff2746", "fetched_at": "2026-08-28T04:11:20.485101+00:00", "kind": "readme", "missing": false, "url": "https://github.com/microsoft/agent-lightning"}, {"content_hash": "0cc59130a56d235adf3de1c875893f396ea0049057c8bae75b18663b73966b7b", "fetched_at": "2026-08-29T08:00:25.881876+00:00", "kind": "homepage", "missing": false, "url": "https://microsoft.github.io/agent-lightning/"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 31, "rhythm": 99}, "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": 441, "days_push": 7, "days_rel": 9, "gap_med": 10.0, "n_releases_24m": 9}, "score": 85, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}