{"adoption": {"forks": 261, "observed_at": "2026-08-28T04:05:42.669444+00:00", "stars": 1836}, "canonical_url": "https://ross.abutalabs.com/products/jacobian-lens", "card": {"archived": false, "artifact_type": "library", "description": " Companion code for the global workspace interpretability paper", "domain": ["machine-learning", "deep-learning", "large-language-models"], "enriched": true, "function": ["machine-learning", "nlp", "developer-tools"], "health_score": 78, "homepage": null, "language": "Python", "license": "Apache-2.0", "license_family": "permissive", "maturity": "maintenance", "member_repos": ["anthropics/jacobian-lens"], "name": "anthropics/jacobian-lens", "platform": ["python", "cross-platform"], "pushed_at": "2026-08-04T20:46:19+00:00", "repo": "anthropics/jacobian-lens", "stars": 1836, "tags": ["interpretability", "mechanistic-interpretability", "jacobian", "lens", "transformers", "residual-stream", "global-workspace", "reference-implementation", "research-code", "natural-language-processing", "research", "gpu"], "topics": [], "urls": [], "use_cases": ["inspect what an internal LLM activation is disposed to make the model say", "visualize layer-by-layer token readouts across positions in a prompt", "fit a Jacobian lens on any HuggingFace decoder transformer", "apply a pre-fitted lens to probe model internals", "reproduce results from the global workspace interpretability paper", "study how verbalizable representations evolve across transformer layers"], "what_it_is": "A Python library implementing the Jacobian lens, an interpretability technique that linearly transports residual-stream activations at any layer into the final-layer basis and decodes them into ranked vocabulary tokens. It is the reference implementation accompanying the 'Verbalizable Representations Form a Global Workspace in Language Models' paper.", "when_to_avoid": ["you need a maintained, production-supported tool (it is explicitly not maintained and not accepting contributions)", "you need optimized or fast fitting (the implementation is a non-optimized reference)", "you work with non-HuggingFace model formats without adaptation"], "when_to_choose": ["you want to interpret internal activations of open-weights decoder LLMs", "you need a reference implementation of the Jacobian lens technique", "you want to reproduce or extend the global workspace paper's analysis"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/jacobian-lens", "repo": "anthropics/jacobian-lens", "role": "main", "score": 56}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:05:42.669444+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T03:18:28.236610+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "95970ecab79106575d637d1f956a4ab934d13df1f596a7274c4db2efba2e94e7", "fetched_at": "2026-08-28T04:05:42.669444+00:00", "kind": "readme", "missing": false, "url": "https://github.com/anthropics/jacobian-lens"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 96, "longevity": 4, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases", "young"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 62, "days_push": 29, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 56, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}