Y Combinator companies API

This repository contains an unofficial API for Y Combinator companies fetched from the Y Combinator website's Algolia search index. It only includes publicly launched companies with pages on the Y Combinator website. It does not scrape the Y Combinator website, instead it uses the Algolia search index to fetch the companies in a GitHub Actions workflow that runs every day. When company records change, the workflow also publishes a daily change summary in JSON and Markdown at changes/latest.json and changes/latest.md, so you can review what YC changed without digging through the full repository diff.

ℹ️ Metadata

API endpoint: https://yc-oss.github.io/api/meta.json

Last updated: August 18, 2026 at 12:40 AM
Companies: 6180
Batches: 50
Industries: 59
Tags: 336

💻 APIs

🏢 Companies

List of companies	API endpoint
All launched companies	https://yc-oss.github.io/api/companies/all.json
Top companies	https://yc-oss.github.io/api/companies/top.json
Black-founded companies	https://yc-oss.github.io/api/companies/black-founded.json
Hispanic/Latino-founded companies	https://yc-oss.github.io/api/companies/hispanic-latino-founded.json
Women-founded companies	https://yc-oss.github.io/api/companies/women-founded.json
Not-for-profit companies	https://yc-oss.github.io/api/companies/nonprofit.json
Companies currently hiring	https://yc-oss.github.io/api/companies/hiring.json
Companies with public application videos	https://yc-oss.github.io/api/companies/app-video-public.json
Companies with public demo day videos	https://yc-oss.github.io/api/companies/demo-day-video-public.json

🔄 Company changes

Change log	API endpoint
Latest company changes (JSON)	https://yc-oss.github.io/api/changes/latest.json
Latest company changes (Markdown)	https://yc-oss.github.io/api/changes/latest.md

🎓 Batches

Companies per batch

Batch	Count	API endpoint
Winter 2012	66	https://yc-oss.github.io/api/batches/winter-2012.json
Summer 2011	60	https://yc-oss.github.io/api/batches/summer-2011.json
Winter 2011	45	https://yc-oss.github.io/api/batches/winter-2011.json
Summer 2010	36	https://yc-oss.github.io/api/batches/summer-2010.json
Winter 2010	27	https://yc-oss.github.io/api/batches/winter-2010.json
Summer 2009	26	https://yc-oss.github.io/api/batches/summer-2009.json
Winter 2009	16	https://yc-oss.github.io/api/batches/winter-2009.json
Summer 2008	22	https://yc-oss.github.io/api/batches/summer-2008.json
Winter 2008	21	https://yc-oss.github.io/api/batches/winter-2008.json
Summer 2007	19	https://yc-oss.github.io/api/batches/summer-2007.json
Winter 2007	13	https://yc-oss.github.io/api/batches/winter-2007.json
Summer 2006	11	https://yc-oss.github.io/api/batches/summer-2006.json
Winter 2006	7	https://yc-oss.github.io/api/batches/winter-2006.json
Summer 2005	9	https://yc-oss.github.io/api/batches/summer-2005.json
Summer 2012	83	https://yc-oss.github.io/api/batches/summer-2012.json
Winter 2013	46	https://yc-oss.github.io/api/batches/winter-2013.json
Summer 2013	52	https://yc-oss.github.io/api/batches/summer-2013.json
Winter 2014	74	https://yc-oss.github.io/api/batches/winter-2014.json
Summer 2014	78	https://yc-oss.github.io/api/batches/summer-2014.json
Winter 2015	110	https://yc-oss.github.io/api/batches/winter-2015.json
Summer 2015	104	https://yc-oss.github.io/api/batches/summer-2015.json
Winter 2016	122	https://yc-oss.github.io/api/batches/winter-2016.json
Summer 2017	125	https://yc-oss.github.io/api/batches/summer-2017.json
Summer 2016	102	https://yc-oss.github.io/api/batches/summer-2016.json
Winter 2017	116	https://yc-oss.github.io/api/batches/winter-2017.json
Winter 2018	146	https://yc-oss.github.io/api/batches/winter-2018.json
Summer 2018	131	https://yc-oss.github.io/api/batches/summer-2018.json
Summer 2019	176	https://yc-oss.github.io/api/batches/summer-2019.json
Winter 2019	194	https://yc-oss.github.io/api/batches/winter-2019.json
Winter 2020	229	https://yc-oss.github.io/api/batches/winter-2020.json
Summer 2020	209	https://yc-oss.github.io/api/batches/summer-2020.json
Winter 2021	336	https://yc-oss.github.io/api/batches/winter-2021.json
Summer 2021	391	https://yc-oss.github.io/api/batches/summer-2021.json
Winter 2022	398	https://yc-oss.github.io/api/batches/winter-2022.json
Summer 2022	234	https://yc-oss.github.io/api/batches/summer-2022.json
Fall 2025	146	https://yc-oss.github.io/api/batches/fall-2025.json
Winter 2023	274	https://yc-oss.github.io/api/batches/winter-2023.json
Summer 2023	220	https://yc-oss.github.io/api/batches/summer-2023.json
Summer 2026	229	https://yc-oss.github.io/api/batches/summer-2026.json
Winter 2026	199	https://yc-oss.github.io/api/batches/winter-2026.json
Winter 2024	248	https://yc-oss.github.io/api/batches/winter-2024.json
Winter 2025	167	https://yc-oss.github.io/api/batches/winter-2025.json
Spring 2026	196	https://yc-oss.github.io/api/batches/spring-2026.json
Summer 2024	248	https://yc-oss.github.io/api/batches/summer-2024.json
Fall 2024	94	https://yc-oss.github.io/api/batches/fall-2024.json
Spring 2025	143	https://yc-oss.github.io/api/batches/spring-2025.json
Summer 2025	166	https://yc-oss.github.io/api/batches/summer-2025.json
Fall 2026	14	https://yc-oss.github.io/api/batches/fall-2026.json
Winter 2027	1	https://yc-oss.github.io/api/batches/winter-2027.json
Unspecified	1	https://yc-oss.github.io/api/batches/unspecified.json

🏭 Industries

Companies per industry

Industry	Count	API endpoint
Agriculture	31	https://yc-oss.github.io/api/industries/agriculture.json
Analytics	126	https://yc-oss.github.io/api/industries/analytics.json
Apparel and Cosmetics	50	https://yc-oss.github.io/api/industries/apparel-and-cosmetics.json
Asset Management	54	https://yc-oss.github.io/api/industries/asset-management.json
Automotive	21	https://yc-oss.github.io/api/industries/automotive.json
Aviation and Space	63	https://yc-oss.github.io/api/industries/aviation-and-space.json
B2B	3151	https://yc-oss.github.io/api/industries/b2b.json
Banking and Exchange	73	https://yc-oss.github.io/api/industries/banking-and-exchange.json
Climate	53	https://yc-oss.github.io/api/industries/climate.json
Construction	52	https://yc-oss.github.io/api/industries/construction.json
Consumer	882	https://yc-oss.github.io/api/industries/consumer.json
Consumer Electronics	46	https://yc-oss.github.io/api/industries/consumer-electronics.json
Consumer Finance	89	https://yc-oss.github.io/api/industries/consumer-finance.json
Consumer Health and Wellness	118	https://yc-oss.github.io/api/industries/consumer-health-and-wellness.json
Content	113	https://yc-oss.github.io/api/industries/content.json
Credit and Lending	74	https://yc-oss.github.io/api/industries/credit-and-lending.json
Defense	24	https://yc-oss.github.io/api/industries/defense.json
Diagnostics	57	https://yc-oss.github.io/api/industries/diagnostics.json
Drones	23	https://yc-oss.github.io/api/industries/drones.json
Drug Discovery and Delivery	60	https://yc-oss.github.io/api/industries/drug-discovery-and-delivery.json
Education	123	https://yc-oss.github.io/api/industries/education.json
Energy	50	https://yc-oss.github.io/api/industries/energy.json
Engineering, Product and Design	614	https://yc-oss.github.io/api/industries/engineering-product-and-design.json
Finance and Accounting	137	https://yc-oss.github.io/api/industries/finance-and-accounting.json
Fintech	652	https://yc-oss.github.io/api/industries/fintech.json
Food and Beverage	93	https://yc-oss.github.io/api/industries/food-and-beverage.json
Gaming	70	https://yc-oss.github.io/api/industries/gaming.json
Government	43	https://yc-oss.github.io/api/industries/government.json
Healthcare	699	https://yc-oss.github.io/api/industries/healthcare.json
Healthcare IT	144	https://yc-oss.github.io/api/industries/healthcare-it.json
Healthcare Services	72	https://yc-oss.github.io/api/industries/healthcare-services.json
Home and Personal	123	https://yc-oss.github.io/api/industries/home-and-personal.json
Housing and Real Estate	85	https://yc-oss.github.io/api/industries/housing-and-real-estate.json
Human Resources	81	https://yc-oss.github.io/api/industries/human-resources.json
Industrial Bio	33	https://yc-oss.github.io/api/industries/industrial-bio.json
Industrials	449	https://yc-oss.github.io/api/industries/industrials.json
Infrastructure	319	https://yc-oss.github.io/api/industries/infrastructure.json
Insurance	66	https://yc-oss.github.io/api/industries/insurance.json
Job and Career Services	19	https://yc-oss.github.io/api/industries/job-and-career-services.json
Legal	59	https://yc-oss.github.io/api/industries/legal.json
Manufacturing and Robotics	139	https://yc-oss.github.io/api/industries/manufacturing-and-robotics.json
Marketing	169	https://yc-oss.github.io/api/industries/marketing.json
Medical Devices	44	https://yc-oss.github.io/api/industries/medical-devices.json
Office Management	25	https://yc-oss.github.io/api/industries/office-management.json
Operations	150	https://yc-oss.github.io/api/industries/operations.json
Payments	125	https://yc-oss.github.io/api/industries/payments.json
Productivity	230	https://yc-oss.github.io/api/industries/productivity.json
Real Estate and Construction	163	https://yc-oss.github.io/api/industries/real-estate-and-construction.json
Recruiting and Talent	78	https://yc-oss.github.io/api/industries/recruiting-and-talent.json
Retail	128	https://yc-oss.github.io/api/industries/retail.json
Sales	137	https://yc-oss.github.io/api/industries/sales.json
Security	122	https://yc-oss.github.io/api/industries/security.json
Social	112	https://yc-oss.github.io/api/industries/social.json
Supply Chain and Logistics	139	https://yc-oss.github.io/api/industries/supply-chain-and-logistics.json
Therapeutics	64	https://yc-oss.github.io/api/industries/therapeutics.json
Transportation Services	27	https://yc-oss.github.io/api/industries/transportation-services.json
Travel, Leisure and Tourism	36	https://yc-oss.github.io/api/industries/travel-leisure-and-tourism.json
Unspecified	18	https://yc-oss.github.io/api/industries/unspecified.json
Virtual and Augmented Reality	20	https://yc-oss.github.io/api/industries/virtual-and-augmented-reality.json

🏷️ Tags

Companies per tag

Tag	Count	API endpoint
3D Printed Foods	1	https://yc-oss.github.io/api/tags/3d-printed-foods.json
3D Printing	11	https://yc-oss.github.io/api/tags/3d-printing.json
Advanced Materials	7	https://yc-oss.github.io/api/tags/advanced-materials.json
Advertising	48	https://yc-oss.github.io/api/tags/advertising.json
Aerospace	44	https://yc-oss.github.io/api/tags/aerospace.json
Agriculture	34	https://yc-oss.github.io/api/tags/agriculture.json
AI	884	https://yc-oss.github.io/api/tags/ai.json
AI Assistant	161	https://yc-oss.github.io/api/tags/ai-assistant.json
AI-Enhanced Learning	46	https://yc-oss.github.io/api/tags/ai-enhanced-learning.json
AI-powered Drug Discovery	37	https://yc-oss.github.io/api/tags/ai-powered-drug-discovery.json
AIOps	59	https://yc-oss.github.io/api/tags/aiops.json
Air Taxis	5	https://yc-oss.github.io/api/tags/air-taxis.json
Airlines	5	https://yc-oss.github.io/api/tags/airlines.json
Airplanes	11	https://yc-oss.github.io/api/tags/airplanes.json
Alternative Battery Tech	2	https://yc-oss.github.io/api/tags/alternative-battery-tech.json
Alternative Fuels	2	https://yc-oss.github.io/api/tags/alternative-fuels.json
Analytics	184	https://yc-oss.github.io/api/tags/analytics.json
Anti-Aging	7	https://yc-oss.github.io/api/tags/anti-aging.json
API	144	https://yc-oss.github.io/api/tags/api.json
APIs	10	https://yc-oss.github.io/api/tags/apis.json
Apparel	4	https://yc-oss.github.io/api/tags/apparel.json
AR	7	https://yc-oss.github.io/api/tags/ar.json
Architecture	5	https://yc-oss.github.io/api/tags/architecture.json
Art Trading Platforms	1	https://yc-oss.github.io/api/tags/art-trading-platforms.json
Artificial Intelligence	966	https://yc-oss.github.io/api/tags/artificial-intelligence.json
Assistive Tech	6	https://yc-oss.github.io/api/tags/assistive-tech.json
Augmented Reality	24	https://yc-oss.github.io/api/tags/augmented-reality.json
Auto Commerce	5	https://yc-oss.github.io/api/tags/auto-commerce.json
Automation	95	https://yc-oss.github.io/api/tags/automation.json
Automotive	24	https://yc-oss.github.io/api/tags/automotive.json
Autonomous Delivery	8	https://yc-oss.github.io/api/tags/autonomous-delivery.json
Autonomous Shipping	1	https://yc-oss.github.io/api/tags/autonomous-shipping.json
Autonomous Trucking	11	https://yc-oss.github.io/api/tags/autonomous-trucking.json
B2B	1117	https://yc-oss.github.io/api/tags/b2b.json
Banking as a Service	26	https://yc-oss.github.io/api/tags/banking-as-a-service.json
Batteryless IoT Sensors	1	https://yc-oss.github.io/api/tags/batteryless-iot-sensors.json
Beauty	11	https://yc-oss.github.io/api/tags/beauty.json
Big Data	33	https://yc-oss.github.io/api/tags/big-data.json
Billing	5	https://yc-oss.github.io/api/tags/billing.json
Biometrics	7	https://yc-oss.github.io/api/tags/biometrics.json
Bioplastic	3	https://yc-oss.github.io/api/tags/bioplastic.json
Biotech	145	https://yc-oss.github.io/api/tags/biotech.json
Biotechnology	17	https://yc-oss.github.io/api/tags/biotechnology.json
Blockchain	2	https://yc-oss.github.io/api/tags/blockchain.json
Booking	3	https://yc-oss.github.io/api/tags/booking.json
Calendar	7	https://yc-oss.github.io/api/tags/calendar.json
Call Center	9	https://yc-oss.github.io/api/tags/call-center.json
Cannabis	7	https://yc-oss.github.io/api/tags/cannabis.json
Carbon Capture and Removal	12	https://yc-oss.github.io/api/tags/carbon-capture-and-removal.json
Careers	5	https://yc-oss.github.io/api/tags/careers.json
Cashierless Checkout	5	https://yc-oss.github.io/api/tags/cashierless-checkout.json
Cell Therapy	5	https://yc-oss.github.io/api/tags/cell-therapy.json
Cellular Agriculture	6	https://yc-oss.github.io/api/tags/cellular-agriculture.json
Chat	6	https://yc-oss.github.io/api/tags/chat.json
Chatbot	10	https://yc-oss.github.io/api/tags/chatbot.json
Chatbots	3	https://yc-oss.github.io/api/tags/chatbots.json
China	3	https://yc-oss.github.io/api/tags/china.json
Civic Tech	8	https://yc-oss.github.io/api/tags/civic-tech.json
Clean Meat	1	https://yc-oss.github.io/api/tags/clean-meat.json
Climate	141	https://yc-oss.github.io/api/tags/climate.json
ClimateTech	32	https://yc-oss.github.io/api/tags/climatetech.json
Cloud Computing	50	https://yc-oss.github.io/api/tags/cloud-computing.json
Cloud Gaming	2	https://yc-oss.github.io/api/tags/cloud-gaming.json
Cloud Workload Protection	5	https://yc-oss.github.io/api/tags/cloud-workload-protection.json
Coding Bootcamps	2	https://yc-oss.github.io/api/tags/coding-bootcamps.json
Collaboration	44	https://yc-oss.github.io/api/tags/collaboration.json
Commercial Space Launch	6	https://yc-oss.github.io/api/tags/commercial-space-launch.json
Community	58	https://yc-oss.github.io/api/tags/community.json
Compliance	73	https://yc-oss.github.io/api/tags/compliance.json
Computational Storage	1	https://yc-oss.github.io/api/tags/computational-storage.json
Computer Vision	78	https://yc-oss.github.io/api/tags/computer-vision.json
Construction	72	https://yc-oss.github.io/api/tags/construction.json
Consumer	248	https://yc-oss.github.io/api/tags/consumer.json
Consumer Finance	32	https://yc-oss.github.io/api/tags/consumer-finance.json
Consumer Health Services	109	https://yc-oss.github.io/api/tags/consumer-health-services.json
Consumer Products	11	https://yc-oss.github.io/api/tags/consumer-products.json
Conversational AI	46	https://yc-oss.github.io/api/tags/conversational-ai.json
Conversational Banking	2	https://yc-oss.github.io/api/tags/conversational-banking.json
COVID-19	4	https://yc-oss.github.io/api/tags/covid-19.json
Creator Economy	35	https://yc-oss.github.io/api/tags/creator-economy.json
CRISPR	4	https://yc-oss.github.io/api/tags/crispr.json
CRM	21	https://yc-oss.github.io/api/tags/crm.json
Crowdfunding	9	https://yc-oss.github.io/api/tags/crowdfunding.json
Crowdsourcing	5	https://yc-oss.github.io/api/tags/crowdsourcing.json
Crypto / Web3	92	https://yc-oss.github.io/api/tags/crypto-web3.json
Cryptocurrency	11	https://yc-oss.github.io/api/tags/cryptocurrency.json
Cryptography	3	https://yc-oss.github.io/api/tags/cryptography.json
Cultivated Meat	2	https://yc-oss.github.io/api/tags/cultivated-meat.json
Culture	3	https://yc-oss.github.io/api/tags/culture.json
Cultured Meat	3	https://yc-oss.github.io/api/tags/cultured-meat.json
Customer Service	23	https://yc-oss.github.io/api/tags/customer-service.json
Customer Success	26	https://yc-oss.github.io/api/tags/customer-success.json
Customer Support	29	https://yc-oss.github.io/api/tags/customer-support.json
Customization	2	https://yc-oss.github.io/api/tags/customization.json
Cyber Insurance	1	https://yc-oss.github.io/api/tags/cyber-insurance.json
Cybersecurity	48	https://yc-oss.github.io/api/tags/cybersecurity.json
DAO	2	https://yc-oss.github.io/api/tags/dao.json
Data Engineering	104	https://yc-oss.github.io/api/tags/data-engineering.json
Data Labeling	20	https://yc-oss.github.io/api/tags/data-labeling.json
Data Science	32	https://yc-oss.github.io/api/tags/data-science.json
Data Visualization	30	https://yc-oss.github.io/api/tags/data-visualization.json
Databases	25	https://yc-oss.github.io/api/tags/databases.json
Dating	6	https://yc-oss.github.io/api/tags/dating.json
Deep Learning	43	https://yc-oss.github.io/api/tags/deep-learning.json
Deepfake Detection	1	https://yc-oss.github.io/api/tags/deepfake-detection.json
Defense	26	https://yc-oss.github.io/api/tags/defense.json
DeFi	12	https://yc-oss.github.io/api/tags/defi.json
Delivery	54	https://yc-oss.github.io/api/tags/delivery.json
Dental	5	https://yc-oss.github.io/api/tags/dental.json
Design	29	https://yc-oss.github.io/api/tags/design.json
Design Tools	56	https://yc-oss.github.io/api/tags/design-tools.json
Developer Tools	545	https://yc-oss.github.io/api/tags/developer-tools.json
DevOps	49	https://yc-oss.github.io/api/tags/devops.json
DevSecOps	34	https://yc-oss.github.io/api/tags/devsecops.json
Diagnostics	32	https://yc-oss.github.io/api/tags/diagnostics.json
Digital Freight Brokerage	4	https://yc-oss.github.io/api/tags/digital-freight-brokerage.json
Digital Health	117	https://yc-oss.github.io/api/tags/digital-health.json
Diversity & Inclusion	3	https://yc-oss.github.io/api/tags/diversity-and-inclusion.json
Documents	34	https://yc-oss.github.io/api/tags/documents.json
Drones	34	https://yc-oss.github.io/api/tags/drones.json
Drug Delivery	6	https://yc-oss.github.io/api/tags/drug-delivery.json
Drug discovery	33	https://yc-oss.github.io/api/tags/drug-discovery.json
E-Commerce	40	https://yc-oss.github.io/api/tags/e-commerce.json
Edge Computing Semiconductors	4	https://yc-oss.github.io/api/tags/edge-computing-semiconductors.json
Edtech	19	https://yc-oss.github.io/api/tags/edtech.json
Education	164	https://yc-oss.github.io/api/tags/education.json
eLearning	52	https://yc-oss.github.io/api/tags/elearning.json
Election Tech	2	https://yc-oss.github.io/api/tags/election-tech.json
Electric Vehicles	23	https://yc-oss.github.io/api/tags/electric-vehicles.json
Electronics	12	https://yc-oss.github.io/api/tags/electronics.json
Email	27	https://yc-oss.github.io/api/tags/email.json
Emerging Markets	9	https://yc-oss.github.io/api/tags/emerging-markets.json
Energy	51	https://yc-oss.github.io/api/tags/energy.json
Energy Storage	13	https://yc-oss.github.io/api/tags/energy-storage.json
Enterprise	114	https://yc-oss.github.io/api/tags/enterprise.json
Enterprise Software	128	https://yc-oss.github.io/api/tags/enterprise-software.json
Entertainment	50	https://yc-oss.github.io/api/tags/entertainment.json
eSports	3	https://yc-oss.github.io/api/tags/esports.json
Fashion	20	https://yc-oss.github.io/api/tags/fashion.json
Feedback	6	https://yc-oss.github.io/api/tags/feedback.json
Femtech	5	https://yc-oss.github.io/api/tags/femtech.json
Fertility Tech	8	https://yc-oss.github.io/api/tags/fertility-tech.json
Finance	97	https://yc-oss.github.io/api/tags/finance.json
FinOps	30	https://yc-oss.github.io/api/tags/finops.json
Fintech	702	https://yc-oss.github.io/api/tags/fintech.json
Fitness	19	https://yc-oss.github.io/api/tags/fitness.json
Food	9	https://yc-oss.github.io/api/tags/food.json
Food & Beverage	28	https://yc-oss.github.io/api/tags/food-and-beverage.json
Food Service Robots & Machines	10	https://yc-oss.github.io/api/tags/food-service-robots-and-machines.json
Food Tech	48	https://yc-oss.github.io/api/tags/food-tech.json
Fraud Detection	10	https://yc-oss.github.io/api/tags/fraud-detection.json
Fraud Prevention	5	https://yc-oss.github.io/api/tags/fraud-prevention.json
Fundraising	3	https://yc-oss.github.io/api/tags/fundraising.json
Furniture	6	https://yc-oss.github.io/api/tags/furniture.json
Fusion Energy	3	https://yc-oss.github.io/api/tags/fusion-energy.json
Gaming	88	https://yc-oss.github.io/api/tags/gaming.json
Gardening	1	https://yc-oss.github.io/api/tags/gardening.json
Gene Therapy	14	https://yc-oss.github.io/api/tags/gene-therapy.json
Generative AI	252	https://yc-oss.github.io/api/tags/generative-ai.json
Genetic Engineering	4	https://yc-oss.github.io/api/tags/genetic-engineering.json
Genomics	28	https://yc-oss.github.io/api/tags/genomics.json
Geographic Information System	6	https://yc-oss.github.io/api/tags/geographic-information-system.json
Ghost Kitchens	11	https://yc-oss.github.io/api/tags/ghost-kitchens.json
GovTech	51	https://yc-oss.github.io/api/tags/govtech.json
GraphQL	3	https://yc-oss.github.io/api/tags/graphql.json
Grocery	31	https://yc-oss.github.io/api/tags/grocery.json
Hard Tech	128	https://yc-oss.github.io/api/tags/hard-tech.json
Hardware	157	https://yc-oss.github.io/api/tags/hardware.json
Health & Wellness	48	https://yc-oss.github.io/api/tags/health-and-wellness.json
Health Insurance	29	https://yc-oss.github.io/api/tags/health-insurance.json
Health Tech	174	https://yc-oss.github.io/api/tags/health-tech.json
Healthcare	209	https://yc-oss.github.io/api/tags/healthcare.json
Healthcare IT	38	https://yc-oss.github.io/api/tags/healthcare-it.json
Home Automation	4	https://yc-oss.github.io/api/tags/home-automation.json
Home Services	17	https://yc-oss.github.io/api/tags/home-services.json
Housing	19	https://yc-oss.github.io/api/tags/housing.json
HR Tech	72	https://yc-oss.github.io/api/tags/hr-tech.json
Human Resources	21	https://yc-oss.github.io/api/tags/human-resources.json
Hydrogen Energy	4	https://yc-oss.github.io/api/tags/hydrogen-energy.json
Identity	16	https://yc-oss.github.io/api/tags/identity.json
Immigration	6	https://yc-oss.github.io/api/tags/immigration.json
Income Share Agreements	4	https://yc-oss.github.io/api/tags/income-share-agreements.json
India	35	https://yc-oss.github.io/api/tags/india.json
Indoor Mapping	2	https://yc-oss.github.io/api/tags/indoor-mapping.json
Industrial	33	https://yc-oss.github.io/api/tags/industrial.json
Industrial Workplace Safety	4	https://yc-oss.github.io/api/tags/industrial-workplace-safety.json
Infrastructure	128	https://yc-oss.github.io/api/tags/infrastructure.json
Insurance	80	https://yc-oss.github.io/api/tags/insurance.json
International	6	https://yc-oss.github.io/api/tags/international.json
Investing	62	https://yc-oss.github.io/api/tags/investing.json
Investments	9	https://yc-oss.github.io/api/tags/investments.json
IoT	44	https://yc-oss.github.io/api/tags/iot.json
IoT Security	2	https://yc-oss.github.io/api/tags/iot-security.json
Kids	9	https://yc-oss.github.io/api/tags/kids.json
Kubernetes	14	https://yc-oss.github.io/api/tags/kubernetes.json
Lab-on-a-chip	1	https://yc-oss.github.io/api/tags/lab-on-a-chip.json
Latin America	20	https://yc-oss.github.io/api/tags/latin-america.json
Legal	39	https://yc-oss.github.io/api/tags/legal.json
LegalTech	58	https://yc-oss.github.io/api/tags/legaltech.json
Lending	18	https://yc-oss.github.io/api/tags/lending.json
Lidar	1	https://yc-oss.github.io/api/tags/lidar.json
Live	6	https://yc-oss.github.io/api/tags/live.json
Livestock Health	1	https://yc-oss.github.io/api/tags/livestock-health.json
Location-based	3	https://yc-oss.github.io/api/tags/location-based.json
Logistics	134	https://yc-oss.github.io/api/tags/logistics.json
Machine Learning	236	https://yc-oss.github.io/api/tags/machine-learning.json
Manufacturing	98	https://yc-oss.github.io/api/tags/manufacturing.json
Maritime	3	https://yc-oss.github.io/api/tags/maritime.json
Market Research	17	https://yc-oss.github.io/api/tags/market-research.json
Marketing	107	https://yc-oss.github.io/api/tags/marketing.json
Marketplace	305	https://yc-oss.github.io/api/tags/marketplace.json
Media	43	https://yc-oss.github.io/api/tags/media.json
Medical Devices	67	https://yc-oss.github.io/api/tags/medical-devices.json
Medical Robotics	5	https://yc-oss.github.io/api/tags/medical-robotics.json
Mental Health	8	https://yc-oss.github.io/api/tags/mental-health.json
Mental Health Tech	36	https://yc-oss.github.io/api/tags/mental-health-tech.json
Messaging	43	https://yc-oss.github.io/api/tags/messaging.json
Metaverse	8	https://yc-oss.github.io/api/tags/metaverse.json
Microfluidics	5	https://yc-oss.github.io/api/tags/microfluidics.json
Microinsurance	3	https://yc-oss.github.io/api/tags/microinsurance.json
Mining	6	https://yc-oss.github.io/api/tags/mining.json
ML	21	https://yc-oss.github.io/api/tags/ml.json
Mobility	13	https://yc-oss.github.io/api/tags/mobility.json
Monitoring	15	https://yc-oss.github.io/api/tags/monitoring.json
Music	20	https://yc-oss.github.io/api/tags/music.json
Nanomedicine	5	https://yc-oss.github.io/api/tags/nanomedicine.json
Nanosensors	5	https://yc-oss.github.io/api/tags/nanosensors.json
Nanotechnology	10	https://yc-oss.github.io/api/tags/nanotechnology.json
Navigation	4	https://yc-oss.github.io/api/tags/navigation.json
Neobank	52	https://yc-oss.github.io/api/tags/neobank.json
Networks	4	https://yc-oss.github.io/api/tags/networks.json
Neurotechnology	18	https://yc-oss.github.io/api/tags/neurotechnology.json
Next-gen Network Security	5	https://yc-oss.github.io/api/tags/next-gen-network-security.json
NFT	4	https://yc-oss.github.io/api/tags/nft.json
NLP	21	https://yc-oss.github.io/api/tags/nlp.json
No-code	34	https://yc-oss.github.io/api/tags/no-code.json
Nonprofit	25	https://yc-oss.github.io/api/tags/nonprofit.json
Note-taking	5	https://yc-oss.github.io/api/tags/note-taking.json
Notifications	2	https://yc-oss.github.io/api/tags/notifications.json
Oncology	22	https://yc-oss.github.io/api/tags/oncology.json
Open Source	170	https://yc-oss.github.io/api/tags/open-source.json
Operations	38	https://yc-oss.github.io/api/tags/operations.json
Payments	146	https://yc-oss.github.io/api/tags/payments.json
Payroll	16	https://yc-oss.github.io/api/tags/payroll.json
Pediatrics	3	https://yc-oss.github.io/api/tags/pediatrics.json
Personalization	12	https://yc-oss.github.io/api/tags/personalization.json
Plant-based Meat	2	https://yc-oss.github.io/api/tags/plant-based-meat.json
Podcasts	7	https://yc-oss.github.io/api/tags/podcasts.json
Primary Care	9	https://yc-oss.github.io/api/tags/primary-care.json
Privacy	19	https://yc-oss.github.io/api/tags/privacy.json
Procurement	13	https://yc-oss.github.io/api/tags/procurement.json
Productivity	168	https://yc-oss.github.io/api/tags/productivity.json
Proptech	84	https://yc-oss.github.io/api/tags/proptech.json
Psychedelics	1	https://yc-oss.github.io/api/tags/psychedelics.json
Quantum Computing	4	https://yc-oss.github.io/api/tags/quantum-computing.json
Radar	3	https://yc-oss.github.io/api/tags/radar.json
Real Estate	80	https://yc-oss.github.io/api/tags/real-estate.json
Recommendation System	4	https://yc-oss.github.io/api/tags/recommendation-system.json
Recruiting	66	https://yc-oss.github.io/api/tags/recruiting.json
Referrals	2	https://yc-oss.github.io/api/tags/referrals.json
Regtech	20	https://yc-oss.github.io/api/tags/regtech.json
Reinforcement Learning	41	https://yc-oss.github.io/api/tags/reinforcement-learning.json
Remittances	6	https://yc-oss.github.io/api/tags/remittances.json
Remote	6	https://yc-oss.github.io/api/tags/remote.json
Remote Work	16	https://yc-oss.github.io/api/tags/remote-work.json
Renewable Energy	19	https://yc-oss.github.io/api/tags/renewable-energy.json
Restaurant Tech	16	https://yc-oss.github.io/api/tags/restaurant-tech.json
Retail	49	https://yc-oss.github.io/api/tags/retail.json
Retail Tech	18	https://yc-oss.github.io/api/tags/retail-tech.json
Reviews	3	https://yc-oss.github.io/api/tags/reviews.json
Ridesharing	2	https://yc-oss.github.io/api/tags/ridesharing.json
Robotic Process Automation	33	https://yc-oss.github.io/api/tags/robotic-process-automation.json
Robotic Surgery	3	https://yc-oss.github.io/api/tags/robotic-surgery.json
Robotics	136	https://yc-oss.github.io/api/tags/robotics.json
Rocketry	4	https://yc-oss.github.io/api/tags/rocketry.json
SaaS	1094	https://yc-oss.github.io/api/tags/saas.json
Sales	119	https://yc-oss.github.io/api/tags/sales.json
Sales Enablement	40	https://yc-oss.github.io/api/tags/sales-enablement.json
Satellites	22	https://yc-oss.github.io/api/tags/satellites.json
Scheduling	12	https://yc-oss.github.io/api/tags/scheduling.json
Search	19	https://yc-oss.github.io/api/tags/search.json
Security	93	https://yc-oss.github.io/api/tags/security.json
Security Orchestration, Automation and Response (SOAR)	1	https://yc-oss.github.io/api/tags/security-orchestration-automation-and-response-(soar).json
Self-Driving Vehicles	6	https://yc-oss.github.io/api/tags/self-driving-vehicles.json
Semiconductors	19	https://yc-oss.github.io/api/tags/semiconductors.json
SEO	5	https://yc-oss.github.io/api/tags/seo.json
Service Mesh	1	https://yc-oss.github.io/api/tags/service-mesh.json
Skincare	2	https://yc-oss.github.io/api/tags/skincare.json
Sleep Tech	9	https://yc-oss.github.io/api/tags/sleep-tech.json
Small Modular Reactors	2	https://yc-oss.github.io/api/tags/small-modular-reactors.json
Smart Clothing	5	https://yc-oss.github.io/api/tags/smart-clothing.json
Smart Home Assistants	7	https://yc-oss.github.io/api/tags/smart-home-assistants.json
Smart Locks	1	https://yc-oss.github.io/api/tags/smart-locks.json
Smart Waste Management	1	https://yc-oss.github.io/api/tags/smart-waste-management.json
SMB	18	https://yc-oss.github.io/api/tags/smb.json
SMS	7	https://yc-oss.github.io/api/tags/sms.json
Social	74	https://yc-oss.github.io/api/tags/social.json
Social Media	34	https://yc-oss.github.io/api/tags/social-media.json
Social Network	22	https://yc-oss.github.io/api/tags/social-network.json
Solar Power	19	https://yc-oss.github.io/api/tags/solar-power.json
Space Exploration	19	https://yc-oss.github.io/api/tags/space-exploration.json
Speech Recognition	6	https://yc-oss.github.io/api/tags/speech-recognition.json
Sports Tech	18	https://yc-oss.github.io/api/tags/sports-tech.json
Stocks	7	https://yc-oss.github.io/api/tags/stocks.json
Subscriptions	37	https://yc-oss.github.io/api/tags/subscriptions.json
Supply Chain	90	https://yc-oss.github.io/api/tags/supply-chain.json
Sustainability	16	https://yc-oss.github.io/api/tags/sustainability.json
Sustainable Agriculture	3	https://yc-oss.github.io/api/tags/sustainable-agriculture.json
Sustainable Fashion	9	https://yc-oss.github.io/api/tags/sustainable-fashion.json
Sustainable Tourism	3	https://yc-oss.github.io/api/tags/sustainable-tourism.json
Swarm Robotics	4	https://yc-oss.github.io/api/tags/swarm-robotics.json
Synthetic Biology	33	https://yc-oss.github.io/api/tags/synthetic-biology.json
Talent Acquisition	7	https://yc-oss.github.io/api/tags/talent-acquisition.json
Team Collaboration	14	https://yc-oss.github.io/api/tags/team-collaboration.json
Telecommunications	27	https://yc-oss.github.io/api/tags/telecommunications.json
Telehealth	31	https://yc-oss.github.io/api/tags/telehealth.json
Telemedicine	30	https://yc-oss.github.io/api/tags/telemedicine.json
Therapeutics	45	https://yc-oss.github.io/api/tags/therapeutics.json
Ticketing	2	https://yc-oss.github.io/api/tags/ticketing.json
Time Series	4	https://yc-oss.github.io/api/tags/time-series.json
Trading	15	https://yc-oss.github.io/api/tags/trading.json
Transportation	37	https://yc-oss.github.io/api/tags/transportation.json
Travel	49	https://yc-oss.github.io/api/tags/travel.json
Trust & Safety	3	https://yc-oss.github.io/api/tags/trust-and-safety.json
Unmanned Vehicle	4	https://yc-oss.github.io/api/tags/unmanned-vehicle.json
Vaccines	1	https://yc-oss.github.io/api/tags/vaccines.json
Vertical Farming	2	https://yc-oss.github.io/api/tags/vertical-farming.json
Video	89	https://yc-oss.github.io/api/tags/video.json
Virtual Reality	14	https://yc-oss.github.io/api/tags/virtual-reality.json
VR Health	2	https://yc-oss.github.io/api/tags/vr-health.json
Warehouse Management Tech	14	https://yc-oss.github.io/api/tags/warehouse-management-tech.json
Weather	3	https://yc-oss.github.io/api/tags/weather.json
Web Development	22	https://yc-oss.github.io/api/tags/web-development.json
Women's Health	15	https://yc-oss.github.io/api/tags/women's-health.json
Workflow Automation	79	https://yc-oss.github.io/api/tags/workflow-automation.json

📀 Schema

Each endpoint (with the exception of meta.json) returns an array of objects. Each object has the following properties:

Property	Type	Description
`id`	number	The company's ID decided by Y Combinator
`name`	string	The company's name
`slug`	string	The company's human-readable slug
`former_names`	string[]	The company's former names, if the company was renamed
`small_logo_thumb_url`	string	The URL of the company's logo as a square hosted by Y Combinator
`website`	string	The company's website URL
`all_locations`	string	The company's locations separated by colons (;)
`long_description`	string	The company's long description
`one_liner`	string	The company's one-liner description
`team_size`	number	The company's team size
`highlight_black`	boolean	Whether the company is highlighted for Black founders
`highlight_latinx`	boolean	Whether the company is highlighted for Hispanic/Latino founders
`highlight_women`	boolean	Whether the company is highlighted for women founders
`industry`	string	The company's industry
`subindustry`	string	The company's subindustry
`launched_at`	number	The company's launch date as a Unix timestamp
`tags`	string[]	The company's tags
`top_company`	boolean	Whether the company is a top company
`isHiring`	boolean	Whether the company is hiring
`nonprofit`	boolean	Whether the company is a nonprofit
`batch`	string	The company's batch
`status`	string	The company's status
`industries`	string[]	The company's industries
`regions`	string[]	The company's regions
`stage`	string	The company's stage
`app_video_public`	boolean	Whether the company's app video is public
`demo_day_video_public`	boolean	Whether the company's demo day video is public
`app_answers`	object	The company's app answers
`question_answers`	boolean	Whether the company's question answers are public
`url`	string	The company's URL on the Y Combinator website
`api`	string	The company's API endpoint from this repository

YC also exposes signed S3 URLs for some application and demo day videos, but those URLs expire quickly. This API stores the durable app_video_public and demo_day_video_public booleans, and provides matching filtered endpoints, instead of publishing stale signed media URLs.

For example, the airbnb.json endpoint returns the following object:

{
"id": 271,
"name": "Airbnb",
"slug": "airbnb",
"former_names": [],
"small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3e9a0092bee2ccf926e650e59c06503ec6b9ee65.png",
"website": "http://airbnb.com",
"all_locations": "San Francisco, CA, USA",
"long_description": "Founded in August of 2008 and based in San Francisco, California, Airbnb is a trusted community marketplace for people to list, discover, and book unique accommodations around the world — online or from a mobile phone. Whether an apartment for a night, a castle for a week, or a villa for a month, Airbnb connects people to unique travel experiences, at any price point, in more than 33,000 cities and 192 countries. And with world-class customer service and a growing community of users, Airbnb is the easiest way for people to monetize their extra space and showcase it to an audience of millions. \r\n\r\nNo global movement springs from individuals. It takes an entire team united behind something big. Together, we work hard, we laugh a lot, we brainstorm nonstop, we use hundreds of Post-Its a week, and we give the best high-fives in town. Headquartered in San Francisco, we have satellite offices in Dublin, London, Barcelona, Paris, Milan, Copenhagen, Berlin, Moscow, São Paolo, Sydney, and Singapore.",
"one_liner": "Book accommodations around the world.",
"team_size": 6132,
"highlight_black": false,
"highlight_latinx": false,
"highlight_women": false,
"industry": "Consumer",
"subindustry": "Consumer -> Travel, Leisure and Tourism",
"launched_at": 1326790856,
"tags": ["Marketplace", "Travel"],
"tags_highlighted": [],
"top_company": true,
"isHiring": false,
"nonprofit": false,
"batch": "W09",
"status": "Public",
"industries": ["Consumer", "Travel, Leisure and Tourism"],
"regions": ["United States of America", "America / Canada"],
"stage": "Growth",
"app_video_public": false,
"demo_day_video_public": false,
"app_answers": null,
"question_answers": false,
"url": "https://www.ycombinator.com/companies/airbnb",
"api": "https://yc-oss.github.io/api/batches/w09/airbnb.json"
}

Here are first 10 companies from the Top Companies API (https://yc-oss.github.io/api/companies/top.json):

Logo	Name	One-liner
	PlanGrid	Mobile applications for the construction industry.
	Gusto	Provides growing businesses with everything to take care of their team.
	Matterport	Turn physical objects and environments into 3D models in seconds.
	Amplitude	Digital Analytics Platform.
	Sendwave	Instant, no fee international remittances.
	Codecademy	The leading online learning platform for technical skills.
	Segment	Software and APIs to collect, clean, and control customer data.
	HelloSign	eSignature software for small and mid-market businesses.
	Fivestars	Customer loyalty and payments platform for small businesses.
	GOAT Group	Platform for the greatest products from the past, present and future.

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Y Combinator companies API

ℹ️ Metadata

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Name		Name	Last commit message	Last commit date
.github		.github
batches		batches
changes		changes
companies		companies
industries		industries
tags		tags
README.md		README.md
changes.ts		changes.ts
changes_test.ts		changes_test.ts
deno.json		deno.json
deno.lock		deno.lock
fetcher.ts		fetcher.ts
meta.json		meta.json

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Y Combinator companies API

ℹ️ Metadata

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🏷️ Tags

📀 Schema

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