{"schema_version":"onlylabs.public_signal.v1","title":"Microsoft Repo: microsoft/langchainjs-for-beginners","description":"Microsoft repo signal with public source context, captured evidence pages, related signals, and data-business radar classification.","url":"https://onlylabs.fyi/signals/869ef8b3-3cd6-48e3-bec1-883ec3e53006","json_url":"https://onlylabs.fyi/signals/869ef8b3-3cd6-48e3-bec1-883ec3e53006/signal.json","generated_at":"2026-06-26T23:20:42.751Z","evidence_latest_fetched_at":"2026-06-13T07:01:56.342924+00:00","signal_first_seen_at":"2026-06-13T07:00:27.571701+00:00","org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab","category_label":"Frontier lab","dossier_url":"https://onlylabs.fyi/labs/microsoft","dossier_json_url":"https://onlylabs.fyi/labs/microsoft/dossier.json"},"related_urls":{"signal":"https://onlylabs.fyi/signals/869ef8b3-3cd6-48e3-bec1-883ec3e53006","signal_json":"https://onlylabs.fyi/signals/869ef8b3-3cd6-48e3-bec1-883ec3e53006/signal.json","source":"https://github.com/microsoft/langchainjs-for-beginners","lab_dossier":"https://onlylabs.fyi/labs/microsoft","lab_dossier_json":"https://onlylabs.fyi/labs/microsoft/dossier.json","analysis":"https://onlylabs.fyi/analysis/microsoft","analysis_json":"https://onlylabs.fyi/analysis/microsoft/analysis.json","analysis_evidence_json":"https://onlylabs.fyi/analysis/microsoft/evidence.json","category":"https://onlylabs.fyi/frontier","category_json":"https://onlylabs.fyi/frontier.json","category_feed":"https://onlylabs.fyi/frontier/feed.xml","category_signals_json":"https://onlylabs.fyi/signals.json","topic":null,"topic_signals_json":null,"topic_feed":null,"data_business":null},"answer_pack":{"answer":"Microsoft published microsoft/langchainjs-for-beginners (TypeScript). 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Welcome to **LangChain.js for Beginners**, your hands-on guide to building AI-powered applications with LangChain.js and TypeScript. Building an AI application is a lot like cooking a gourmet meal. You can gather every ingredient yourself, make each sauce from scratch, and craft your own tools. Or, you can work in a well-equipped kitchen stocked with quality ingredients and reliable recipes. **LangChain.js is that well-equipped kitchen for AI development.** What You'll Learn and Build This course takes you from zero to building robust AI applications: - **🤖 Conversational AI** - Build context-aware chatbots with streaming responses and customizable behavior - **🔍 Semantic Search** - Create search systems that understand meaning, not just keywords - **🛠️ Function Calling & Tools** - Give AI the ability to use tools and extract structured data - **🚀 Autonomous Agents** - Build..."},"evidence_pages":[],"related_signals":[{"id":"3fdd4690-9c28-4863-ba65-4ec299d85aa0","url":"https://onlylabs.fyi/signals/3fdd4690-9c28-4863-ba65-4ec299d85aa0","source_url":"https://github.com/microsoft/fabric-events","title":"microsoft/fabric-events","context":"HTML","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-23T00:54:34+00:00","first_seen_at":"2026-06-23T07:00:32.834993+00:00","date_source":"source"},{"id":"c0d592c7-e699-4bf5-a2c3-5b79f43f85a0","url":"https://onlylabs.fyi/signals/c0d592c7-e699-4bf5-a2c3-5b79f43f85a0","source_url":"https://github.com/microsoft/citadel","title":"microsoft/citadel","context":"HTML","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-22T06:20:10+00:00","first_seen_at":"2026-06-22T07:00:31.308446+00:00","date_source":"source"},{"id":"96d85410-04f4-4314-b4d1-6788163ff05e","url":"https://onlylabs.fyi/signals/96d85410-04f4-4314-b4d1-6788163ff05e","source_url":"https://github.com/microsoft/amplifier-app-opencode","title":"microsoft/amplifier-app-opencode","context":"Python","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-20T22:24:01+00:00","first_seen_at":"2026-06-23T07:00:32.834993+00:00","date_source":"source"},{"id":"027f6a7e-9e04-4fad-a3d7-9435bc32cf00","url":"https://onlylabs.fyi/signals/027f6a7e-9e04-4fad-a3d7-9435bc32cf00","source_url":"https://github.com/microsoft/amplifier-app-wiki-weaver","title":"microsoft/amplifier-app-wiki-weaver","context":"Python","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-19T23:38:20+00:00","first_seen_at":"2026-06-20T07:00:30.944907+00:00","date_source":"source"},{"id":"4680cd70-2c2f-4483-bd8d-ceb9b28de9cf","url":"https://onlylabs.fyi/signals/4680cd70-2c2f-4483-bd8d-ceb9b28de9cf","source_url":"https://github.com/microsoft/What-I-did-with-Cowork","title":"microsoft/What-I-did-with-Cowork","context":"Python","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-18T09:39:01+00:00","first_seen_at":"2026-06-23T07:00:32.834993+00:00","date_source":"source"},{"id":"4b65f882-b9ed-45ca-b252-be0ddd8ee03e","url":"https://onlylabs.fyi/signals/4b65f882-b9ed-45ca-b252-be0ddd8ee03e","source_url":"https://github.com/microsoft/Salesforce-Custom-Copilot-Connector","title":"microsoft/Salesforce-Custom-Copilot-Connector","context":"Python","kind":{"key":"repo_new","label":"Repo"},"org":{"slug":"microsoft","name":"Microsoft","category":"frontier-lab"},"occurred_at":"2026-06-11T06:55:24+00:00","first_seen_at":"2026-06-18T07:00:31.633644+00:00","date_source":"source"}]}