{"schema_version":"onlylabs.public_signal.v1","title":"AI21 Labs Fork: AI21Labs/langchain","description":"AI21 Labs fork signal with public source context, captured evidence pages, related signals, and category-scoped analysis context.","url":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb","json_url":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb/signal.json","generated_at":"2026-06-11T03:23:00.154387+00:00","org":{"slug":"ai21","name":"AI21 Labs","category":"neolab","category_label":"Neolab","dossier_url":"https://onlylabs.fyi/labs/ai21","dossier_json_url":"https://onlylabs.fyi/labs/ai21/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb","signal_json":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb/signal.json","source":"https://github.com/AI21Labs/langchain","lab_dossier":"https://onlylabs.fyi/labs/ai21","lab_dossier_json":"https://onlylabs.fyi/labs/ai21/dossier.json","analysis":"https://onlylabs.fyi/analysis/ai21","analysis_json":"https://onlylabs.fyi/analysis/ai21/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/ai21/evidence.json","category":"https://onlylabs.fyi/neolabs","category_json":"https://onlylabs.fyi/neolabs.json","category_feed":"https://onlylabs.fyi/neolabs/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json?category=neolab","topic":"https://onlylabs.fyi/topics/forks","topic_signals_json":"https://onlylabs.fyi/topics/forks/signals.json?category=neolab","topic_feed":"https://onlylabs.fyi/topics/forks/feed.xml?category=neolab","data_business":null},"answer_pack":{"answer":"AI21 Labs forked AI21Labs/langchain (forked from langchain-ai/langchain). This fork signal points to upstream code the lab may be inspecting, patching, or building on. High-signal details: repo AI21Labs/langchain · parent langchain-ai/langchain. onlylabs links this event to 1 captured evidence page and 5 related fork signals.","signal_desk":"forks","source_context":{"source_url":"https://github.com/AI21Labs/langchain","source_host":"github.com","occurred_at":"2023-12-24T08:05:20+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source","context":"forked from langchain-ai/langchain"},"context_markers":[{"label":"Lab","value":"AI21 Labs","source":"signal"},{"label":"Signal desk","value":"forks","source":"signal"},{"label":"Source host","value":"github.com","source":"source"},{"label":"Repository","value":"AI21Labs/langchain","source":"source"},{"label":"Parent","value":"langchain-ai/langchain","source":"source"},{"label":"Stars","value":"1","source":"traction"},{"label":"Watch term","value":"Data pipeline","source":"evidence"},{"label":"Watch term","value":"Infrastructure","source":"evidence"},{"label":"Watch term","value":"Agents and tool use","source":"evidence"}],"evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://github.com/AI21Labs/langchain"],"related_signals":5,"has_source_url":true,"latest_page_fetched_at":"2026-06-11T03:23:00.154387+00:00"},"data_business":{"matches":false,"lanes":[],"matched_terms":[],"score":null,"reason":null},"agent_handoff":{"signal_json":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb/signal.json","dossier_json":"https://onlylabs.fyi/labs/ai21/dossier.json","analysis_json":"https://onlylabs.fyi/analysis/ai21/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/ai21/evidence.json","topic_signals_json":"https://onlylabs.fyi/topics/forks/signals.json?category=neolab","topic_feed":"https://onlylabs.fyi/topics/forks/feed.xml?category=neolab","category_signals_json":"https://onlylabs.fyi/signals.json?category=neolab","data_radar_json":null,"opportunities_json":null},"analysis_playbook":{"objective":"Turn fork activity into a map of upstream tools, libraries, model utilities, agent frameworks, and research dependencies being inspected or adapted.","evidence_focus":["forked parent repo","repo owner","language","description","stars","org and recency"],"extraction_questions":["Which upstream projects are repeated across labs?","Which forks point to evals, agents, infrastructure, model tooling, or data pipelines?","Which low-profile forks could precede a release or hiring wave?","Which labs are converging on the same technical adjacency?"],"signal_questions":["What upstream dependency or technical adjacency does this fork reveal?","Which upstream projects are repeated across labs?","Which forks point to evals, agents, infrastructure, model tooling, or data pipelines?","Do the 5 related fork signals show a repeated pattern?"],"output_fields":["org","upstream_repo","language","technical_theme","evidence_url"],"data_business_relevance":"Data-business lane extraction is scoped to frontier labs; for this category, keep conclusions tied to category-specific strategy, source evidence, and follow-up questions.","required_sources":[{"label":"signal_json","url":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb/signal.json","required":true},{"label":"source","url":"https://github.com/AI21Labs/langchain","required":true},{"label":"dossier_json","url":"https://onlylabs.fyi/labs/ai21/dossier.json","required":true},{"label":"analysis_evidence_json","url":"https://onlylabs.fyi/analysis/ai21/evidence.json","required":true},{"label":"topic_signals_json","url":"https://onlylabs.fyi/topics/forks/signals.json?category=neolab","required":false},{"label":"data_radar_json","url":null,"required":false}],"expected_output":["one-paragraph source-grounded interpretation","category-specific implication","confidence and missing evidence","recommended next source to inspect"],"prompt_seed":"Using only the linked onlylabs JSON, captured source context, and cited evidence, analyze AI21 Labs's fork signal \"AI21Labs/langchain\" for neolab strategy."},"semantic_triples":[{"subject":"AI21 Labs","predicate":"forked","object":"AI21Labs/langchain","text":"AI21 Labs forked AI21Labs/langchain."},{"subject":"AI21Labs/langchain","predicate":"is classified as","object":"fork signal","text":"AI21Labs/langchain is classified as fork signal."},{"subject":"AI21Labs/langchain","predicate":"belongs to","object":"forks desk","text":"AI21Labs/langchain belongs to forks desk."},{"subject":"AI21Labs/langchain","predicate":"has context","object":"forked from langchain-ai/langchain","text":"AI21Labs/langchain has context forked from langchain-ai/langchain."},{"subject":"AI21Labs/langchain","predicate":"has evidence coverage","object":"1 captured evidence page","text":"AI21Labs/langchain has evidence coverage 1 captured evidence page."},{"subject":"AI21Labs/langchain","predicate":"has captured page count","object":"1","text":"AI21Labs/langchain has captured page count 1."},{"subject":"AI21Labs/langchain","predicate":"has readable page count","object":"1","text":"AI21Labs/langchain has readable page count 1."},{"subject":"AI21Labs/langchain","predicate":"has related signal count","object":"5","text":"AI21Labs/langchain has related signal count 5."},{"subject":"AI21Labs/langchain","predicate":"has analysis playbook objective","object":"Turn fork activity into a map of upstream tools, libraries, model utilities, agent frameworks, and research dependencies being inspected or adapted.","text":"AI21Labs/langchain has analysis playbook objective Turn fork activity into a map of upstream tools, libraries, model utilities, agent frameworks, and research dependencies being inspected or adapted.."},{"subject":"AI21Labs/langchain","predicate":"has source host","object":"github.com","text":"AI21Labs/langchain has source host github.com."},{"subject":"AI21Labs/langchain","predicate":"has lab","object":"AI21 Labs","text":"AI21Labs/langchain has lab AI21 Labs."},{"subject":"AI21Labs/langchain","predicate":"has signal desk","object":"forks","text":"AI21Labs/langchain has signal desk forks."},{"subject":"AI21Labs/langchain","predicate":"has source host","object":"github.com","text":"AI21Labs/langchain has source host github.com."},{"subject":"AI21Labs/langchain","predicate":"has repository","object":"AI21Labs/langchain","text":"AI21Labs/langchain has repository AI21Labs/langchain."},{"subject":"AI21Labs/langchain","predicate":"has parent","object":"langchain-ai/langchain","text":"AI21Labs/langchain has parent langchain-ai/langchain."},{"subject":"AI21Labs/langchain","predicate":"has stars","object":"1","text":"AI21Labs/langchain has stars 1."},{"subject":"AI21Labs/langchain","predicate":"has watch term","object":"Data pipeline","text":"AI21Labs/langchain has watch term Data pipeline."},{"subject":"AI21Labs/langchain","predicate":"has watch term","object":"Infrastructure","text":"AI21Labs/langchain has watch term Infrastructure."}]},"intelligence":{"signal_desk":"forks","answer":"AI21 Labs forked AI21Labs/langchain (forked from langchain-ai/langchain). This fork signal points to upstream code the lab may be inspecting, patching, or building on. High-signal details: repo AI21Labs/langchain · parent langchain-ai/langchain. onlylabs links this event to 1 captured evidence page and 5 related fork signals.","semantic_triples":[{"subject":"AI21 Labs","predicate":"forked","object":"AI21Labs/langchain","text":"AI21 Labs forked AI21Labs/langchain."},{"subject":"AI21Labs/langchain","predicate":"is classified as","object":"fork signal","text":"AI21Labs/langchain is classified as fork signal."},{"subject":"AI21Labs/langchain","predicate":"belongs to","object":"forks desk","text":"AI21Labs/langchain belongs to forks desk."},{"subject":"AI21Labs/langchain","predicate":"has context","object":"forked from langchain-ai/langchain","text":"AI21Labs/langchain has context forked from langchain-ai/langchain."},{"subject":"AI21Labs/langchain","predicate":"has evidence coverage","object":"1 captured evidence page","text":"AI21Labs/langchain has evidence coverage 1 captured evidence page."}]},"signal":{"id":"a859f4f1-62ca-4332-89ec-2ce11c22aafb","url":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb","json_url":"https://onlylabs.fyi/signals/a859f4f1-62ca-4332-89ec-2ce11c22aafb/signal.json","source_url":"https://github.com/AI21Labs/langchain","title":"AI21Labs/langchain","summary":"AI21 Labs forked upstream code. onlylabs watches forks for tooling, infrastructure, research dependencies, and product-adjacent work.","context":"forked from langchain-ai/langchain","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2023-12-24T08:05:20+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source","evidence_coverage":{"target_pages":1,"captured_pages":1,"readable_pages":1,"capture_methods":["plain"],"missing_page_urls":[],"failed_page_urls":[],"blocked_page_urls":[],"page_urls":["https://github.com/AI21Labs/langchain"]},"facets":{"repo":"AI21Labs/langchain","parent":"langchain-ai/langchain"},"traction":{"github_stars":1,"hn_points":null,"hn_comments":null,"hn_story_id":null,"hf_downloads":null,"hf_likes":null},"data_radar":null},"primary_evidence_page":{"url":"https://github.com/AI21Labs/langchain","final_url":"https://github.com/AI21Labs/langchain","title":"AI21Labs/langchain repository metadata","http_status":200,"content_type":"application/json","capture_method":"plain","fetched_at":"2026-06-11T03:23:00.154387+00:00","bytes":28954,"raw_path":"3f23275f051823460e7587e9d1de7190cc653dd432a68fb58e0e13a8187fd9a5.json","content_hash":"c4da781ed28e92c9d664bb3c61a2d29e36a97b6939a0d2a56c94febd65c41e26","excerpt_chars":1200,"truncated":true,"excerpt":"AI21Labs/langchain Description: ⚡ Building applications with LLMs through composability ⚡ Language: Python License: MIT Stars: 1 Forks: 2 Open issues: 0 Created: 2023-12-24T08:05:20Z Pushed: 2024-02-28T09:42:59Z Default branch: master Fork: yes Parent repository: langchain-ai/langchain Archived: yes README: 🦜️🔗 LangChain ⚡ Build context-aware reasoning applications ⚡ [![Release Notes](https://img.shields.io/github/release/langchain-ai/langchain)](https://github.com/langchain-ai/langchain/releases) [![CI](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml/badge.svg)](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml) [![Downloads](https://static.pepy.tech/badge/langchain/month)](https://pepy.tech/project/langchain) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) [![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchainai.svg?style=social&label=Follow%20%40LangChainAI)](https://twitter.com/langchainai) [![](https://dcbadge.vercel.app/api/server/6adMQxSpJS?compact=true&style=flat)](https://discord.gg/6adMQxSpJS) [![Open in Dev..."},"evidence_pages":[{"url":"https://github.com/AI21Labs/langchain","final_url":"https://github.com/AI21Labs/langchain","title":"AI21Labs/langchain repository metadata","http_status":200,"content_type":"application/json","capture_method":"plain","fetched_at":"2026-06-11T03:23:00.154387+00:00","bytes":28954,"raw_path":"3f23275f051823460e7587e9d1de7190cc653dd432a68fb58e0e13a8187fd9a5.json","content_hash":"c4da781ed28e92c9d664bb3c61a2d29e36a97b6939a0d2a56c94febd65c41e26","excerpt_chars":1200,"truncated":true,"excerpt":"AI21Labs/langchain Description: ⚡ Building applications with LLMs through composability ⚡ Language: Python License: MIT Stars: 1 Forks: 2 Open issues: 0 Created: 2023-12-24T08:05:20Z Pushed: 2024-02-28T09:42:59Z Default branch: master Fork: yes Parent repository: langchain-ai/langchain Archived: yes README: 🦜️🔗 LangChain ⚡ Build context-aware reasoning applications ⚡ [![Release Notes](https://img.shields.io/github/release/langchain-ai/langchain)](https://github.com/langchain-ai/langchain/releases) [![CI](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml/badge.svg)](https://github.com/langchain-ai/langchain/actions/workflows/check_diffs.yml) [![Downloads](https://static.pepy.tech/badge/langchain/month)](https://pepy.tech/project/langchain) [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT) [![Twitter](https://img.shields.io/twitter/url/https/twitter.com/langchainai.svg?style=social&label=Follow%20%40LangChainAI)](https://twitter.com/langchainai) [![](https://dcbadge.vercel.app/api/server/6adMQxSpJS?compact=true&style=flat)](https://discord.gg/6adMQxSpJS) [![Open in Dev..."}],"related_signals":[{"id":"157e2977-d907-4dd3-bafb-79a255ee690c","url":"https://onlylabs.fyi/signals/157e2977-d907-4dd3-bafb-79a255ee690c","source_url":"https://github.com/AI21Labs/auto-tuning-vllm","title":"AI21Labs/auto-tuning-vllm","context":"forked from openshift-psap/auto-tuning-vllm","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2025-12-24T09:58:31+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source"},{"id":"2a66d88d-76ee-4b29-b828-bb748c12875f","url":"https://onlylabs.fyi/signals/2a66d88d-76ee-4b29-b828-bb748c12875f","source_url":"https://github.com/AI21Labs/transformers","title":"AI21Labs/transformers","context":"forked from huggingface/transformers","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2024-03-28T14:42:27+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source"},{"id":"300e00f4-63c0-4431-800e-ab3fcc229890","url":"https://onlylabs.fyi/signals/300e00f4-63c0-4431-800e-ab3fcc229890","source_url":"https://github.com/AI21Labs/terraform-provider-awscc","title":"AI21Labs/terraform-provider-awscc","context":"forked from hashicorp/terraform-provider-awscc","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2023-08-13T08:46:57+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source"},{"id":"c551bd23-8954-4b01-a855-a9887e46c9f4","url":"https://onlylabs.fyi/signals/c551bd23-8954-4b01-a855-a9887e46c9f4","source_url":"https://github.com/AI21Labs/dotfiles","title":"AI21Labs/dotfiles","context":"forked from MikeMcQuaid/dotfiles","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2017-11-15T11:03:47+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source"},{"id":"2be5f5d7-db1a-4dd6-8b8f-03f2811508b9","url":"https://onlylabs.fyi/signals/2be5f5d7-db1a-4dd6-8b8f-03f2811508b9","source_url":"https://github.com/AI21Labs/strap","title":"AI21Labs/strap","context":"forked from MikeMcQuaid/strap","kind":{"key":"repo_forked","label":"Fork"},"org":{"slug":"ai21","name":"AI21 Labs","category":"neolab"},"occurred_at":"2017-11-13T20:35:59+00:00","first_seen_at":"2026-06-05T20:58:44.654825+00:00","date_source":"source"}]}