[ { "id": 515, "name": "Prophecy Sciences", "slug": "prophecy-sciences", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://prophecysciences.com", "all_locations": "San Francisco, CA, USA", "long_description": "Prophecy is quantifying the cognitive factors that determine workplace performance -- from mental aptitude, to personality traits, to decision-making styles and interpersonal dynamics. Drawing from research across many subfields of neuroscience, we have created a suite of cognitive tests that integrate behavioral measures with sensors for collecting biosignals. The data we collect is unlike that of any existing personality or aptitude test, and gives us the unique ability to predict a tremendous number of traits, characteristics, and job performance measures. We help employers find the ideal person for a job, and we help managers optimize and motivate their teams.", "one_liner": "Predicting workplace performance through neuroscience", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Recruiting and Talent", "launched_at": 1357185696, "tags": [ "Neurotechnology" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2013", "status": "Inactive", "industries": [ "B2B", "Recruiting and Talent" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/prophecy-sciences", "api": "https://yc-oss.github.io/api/batches/winter-2013/prophecy-sciences.json" }, { "id": 656, "name": "SpringWit", "slug": "springwit", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://springwit.com", "all_locations": "", "long_description": null, "one_liner": "Brain health and awareness", "team_size": 0, "industry": "Healthcare", "subindustry": "Healthcare -> Consumer Health and Wellness", "launched_at": 1398907612, "tags": [ "Neurotechnology", "Health Tech" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2014", "status": "Inactive", "industries": [ "Healthcare", "Consumer Health and Wellness" ], "regions": [ "Unspecified" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/springwit", "api": "https://yc-oss.github.io/api/batches/summer-2014/springwit.json" }, { "id": 1528, "name": "BIOS Health", "slug": "bios-health", "former_names": [ "Cambridge Bio-Augmentation Systems", "BIOS" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fbf627d263e3eeaa10ca6fef671ae57e191e51f1.png", "website": "https://www.bios.health", "all_locations": "Cambridge, England, United Kingdom; England, United Kingdom", "long_description": "BIOS Health was previously called Cambridge Bio-Augmentation Systems (CBAS) and focused on prosthetic neural interfaces as a first market. Now we use ", "one_liner": "Neural interfaces to understand and use nerve data in medicine.", "team_size": 45, "industry": "Healthcare", "subindustry": "Healthcare", "launched_at": 1478740216, "tags": [ "Artificial Intelligence", "Neurotechnology" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2017", "status": "Active", "industries": [ "Healthcare" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/bios-health", "api": "https://yc-oss.github.io/api/batches/winter-2017/bios-health.json" }, { "id": 1767, "name": "Nectome", "slug": "nectome", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "https://nectome.com/", "all_locations": "South San Francisco, CA, USA", "long_description": "Nectome is a neuroscience startup that aims to preserve the brain and keep all its memories intact.\r\n\r\nThe company is building the next generation of tools to preserve the connectome. The connectome is all the connections called synapses between neurons in the brain. Researchers from the company is now learning to manipulate individual memories, building advanced brain prosthetics, and reverse-engineering the brain.", "one_liner": "Building a way to preserve long-term memories.", "team_size": 5, "industry": "Healthcare", "subindustry": "Healthcare -> Therapeutics", "launched_at": 1509602625, "tags": [ "Neurotechnology" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2018", "status": "Active", "industries": [ "Healthcare", "Therapeutics" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/nectome", "api": "https://yc-oss.github.io/api/batches/winter-2018/nectome.json" }, { "id": 1963, "name": "Rain Neuromorphics", "slug": "rain-neuromorphics", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/9d8fe573409c782a57a9055002e8b6f07292ece3.png", "website": "http://www.rain-neuromorphics.com", "all_locations": "Redwood City, CA, USA", "long_description": "At Rain Neuromorphics, we envision a future where every device possesses a dynamic and continuously learning AI brain. Neural Networks are the most powerful engines behind today's AI, but simulations require massive amounts of power and time to learn all of the synaptic connections. As opposed to a simulation, our neuromorphic hardware is a physical artificial neural network, composed of spiking neurons and physical synapses. We combine unique electroceramic materials, nanofabrication techniques, and biologically plausible models of learning to create the Memristive Nanowire Neural Network (MN3), a new type of AI chip. The MN3 can possess over ten million spiking neurons per square centimeter, and uses far less power than conventional GPUs and CPUs.", "one_liner": "We build artificial intelligence processors inspired by the brain. ", "team_size": 12, "industry": "Industrials", "subindustry": "Industrials -> Manufacturing and Robotics", "launched_at": 1525295278, "tags": [ "Artificial Intelligence", "Hardware", "Neurotechnology" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2018", "status": "Acquired", "industries": [ "Industrials", "Manufacturing and Robotics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rain-neuromorphics", "api": "https://yc-oss.github.io/api/batches/summer-2018/rain-neuromorphics.json" }, { "id": 2029, "name": "Circumvent", "slug": "circumvent", "former_names": [ "Circumvent Pharmaceuticals" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b5fd725fe8e2cac76ed87eacf3161d3f37da8f61.png", "website": "https://www.circumventpharmaceuticals.com/", "all_locations": "", "long_description": "", "one_liner": "Utilizing monogenic disorders to inform and solve highly complex…", "team_size": 6, "industry": "Healthcare", "subindustry": "Healthcare -> Therapeutics", "launched_at": 1527534673, "tags": [ "Neurotechnology", "Biotech", "Genomics" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2018", "status": "Active", "industries": [ "Healthcare", "Therapeutics" ], "regions": [ "Unspecified" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/circumvent", "api": "https://yc-oss.github.io/api/batches/summer-2018/circumvent.json" }, { "id": 11976, "name": "BrainKey", "slug": "brainkey", "former_names": [ "Brain Key" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/37ef137c0b25704bcbf6c8a2e9e8910944567fe6.png", "website": "https://www.brainkey.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "BrainKey is an AI-driven digital healthcare company with a mission to create a world free from dementia. ", "one_liner": "Brain Longevity", "team_size": 20, "industry": "Healthcare", "subindustry": "Healthcare -> Diagnostics", "launched_at": 1541131379, "tags": [ "Neurotechnology", "Health Tech", "Digital Health", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2019", "status": "Active", "industries": [ "Healthcare", "Diagnostics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/brainkey", "api": "https://yc-oss.github.io/api/batches/winter-2019/brainkey.json" }, { "id": 12553, "name": "Well Principled", "slug": "well-principled", "former_names": [ "Well Principled", "BODYSIM by Well Principled" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/6c59ac5aca8c4a74c69ab15c408544b91f24e98e.png", "website": "https://wellprincipled.com", "all_locations": "St. Louis, MO, USA", "long_description": "We aren’t building AI to replace \"knowledge work” that requires neither, but to bolster the working human intellect which has never failed to discover new paths to prosperity.\r\n\r\nFor all their success, mainstream approaches to AI have fundamental limitations preventing them from solving critical classes of problems. We are building a new AI architecture from first principles to break from these limitations.\r\n\r\nThe status quo has ossified around the supervised, brute-force pretraining paradigm. These systems do not, and cannot, handle the essential skills of continual learning, goal discovery, novel planning, and the creation of new knowledge.\r\n\r\nThese limitations are not trivial. Our national prosperity depends directly on overcoming these limitations, because the essential skills underlie the skilled trades. From electricians to machinists to nurses, apprentice tradespeople in all of these fields learn “skilled improvisation” where every solution is novel, and even the goal must be discovered. Prosperity demands the precise capabilities where status quo AI is structurally weak.\r\n\r\nWorse, these limitations will not be overcome with more compute or training data. They are inescapable consequences of the underlying technologies of supervised learning, neural networks, transformers, backprop, and gradient descent. Progress requires independence from them.\r\n\r\nWe are building a new AI architecture by reverse-engineering the system that got us this far: the human brain. By triangulating between neuroscience, cognitive science, and the evolutionary elaboration of brains, we have identified the brain’s algorithms to (a) continually learn a causal world model (b) select goals to both achieve and learn to achieve more (c) plan to reach novel goals, and (d) creatively produce new knowledge.\r\n\r\n\r\nJoin us in building intelligence with ingenuity to bolster the skilled trades.\r\n\r\n", "one_liner": "The neural engine for autonomous robots", "team_size": 3, "industry": "B2B", "subindustry": "B2B", "launched_at": 1556081533, "tags": [ "Artificial Intelligence", "Hard Tech", "Neurotechnology", "Robotics" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/well-principled", "api": "https://yc-oss.github.io/api/batches/summer-2019/well-principled.json" }, { "id": 12580, "name": "Voyage Biomedical", "slug": "voyage-biomedical", "former_names": [ "Voyage Biomedical Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/bc2de50e20e222a7884277e269a1efe34dfe261d.png", "website": "https://voyage.bio", "all_locations": "Berkeley, CA, USA", "long_description": "Acquired by Penumbra (NYSE:PEN).", "one_liner": "Using cooling to end brain damage during stroke.", "team_size": 3, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1556165412, "tags": [ "Hardware", "Neurotechnology", "Medical Devices" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Acquired", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/voyage-biomedical", "api": "https://yc-oss.github.io/api/batches/summer-2019/voyage-biomedical.json" }, { "id": 22934, "name": "Auricle", "slug": "auricle", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3befcbf94e33a69c5d761a78d1ff81c267da6aff.png", "website": "https://auricle.com", "all_locations": "San Francisco, CA, USA; Oakland, CA, USA", "long_description": "Auricle is a medical device company building a breakthrough neurostimulation implant to restore hearing in millions of patients who no longer benefit from hearing aids, get less than 60% on a word recognition test, but aren't prepared to make the jump to a cochlear implant. \r\n\r\nOur approach preserves remaining natural hearing through a reversible and less invasive surgery, addressing the key concerns that hold most patients back from getting a cochlear implant (currently the only treatment option for these patients).\r\n\r\nThe company spun out of Stanford Biodesign having completed two acute human clinical studies demonstrating the approach will work. The team is now focused on developing their full implant system for their first clinical trial. \r\n\r\nAuricle addresses a currently unserved profile of hearing loss that affects a growing population of 3.5 million patients in the US and represents an immediately accessible $1.2B market opportunity with existing reimbursement.", "one_liner": "Neurostimulation implant to restore hearing & speech understanding", "team_size": 2, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1680287454, "tags": [ "Hard Tech", "Neurotechnology", "Health Tech", "Medical Devices", "Healthcare" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/auricle", "api": "https://yc-oss.github.io/api/batches/winter-2021/auricle.json" }, { "id": 23521, "name": "MindPortal", "slug": "mindportal", "former_names": [ "Aura-labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/bc6a4fe2e078ae61e81ab99d657be389a0238c71.png", "website": "https://www.mindportal.com", "all_locations": "London, England, United Kingdom", "long_description": "MindPortal is a pioneering AI research company advancing human-AI interaction by enabling people to communicate with computers and AI assistants purely through thought. As an AI company, we focus exclusively on model development rather than hardware. Our models are designed to be general-purpose, adaptable across a wide range of applications. Our flagship development, MindSpeech, is the first supervised AI model to translate imagined speech into text, enabling direct thought-to-language communication. MindSpeech has earned endorsements from leading experts, including Neuralink's former technical strategy head and DARPA’s N3 program lead scientist. Our thought-to-language AI models have the potential for transformative applications in fields such as healthcare, education, and VR/AR and our work has been featured in major publications such as Forbes, The Times, The Telegraph, and Business Insider. MindPortal has over 11 patents filed in the field and is backed by prominent investors such as Y Combinator.\r\n", "one_liner": "Thought-to-Language AI Models", "team_size": 10, "industry": "Consumer", "subindustry": "Consumer -> Consumer Electronics", "launched_at": 1614670242, "tags": [ "Artificial Intelligence", "Neurotechnology", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Inactive", "industries": [ "Consumer", "Consumer Electronics" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mindportal", "api": "https://yc-oss.github.io/api/batches/winter-2021/mindportal.json" }, { "id": 25330, "name": "Actipulse Neuroscience", "slug": "actipulse-neuroscience", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/549997d4f76fc2b7db6db7332ed77e361e12b98d.png", "website": "http://www.actipulseneuroscience.com", "all_locations": "Cambridge, MA, USA; Mexico City, CDMX, Mexico", "long_description": "Non-invasive brain stimulation is a widely-utilized, FDA cleared treatment used for patients diagnosed with depression, but is limited to a hospital setting due to the cost of the device, and complexity of treatment application.\r\n\r\nOur proprietary brain stimulation device allows patients to be treated directly from their home, with the same efficacy, and at a lower cost of treatment.\r\n\r\nCurrently in FDA pivotal phase for Major Depressive Disorder, and Pilot phase for Alzheimer's and Parkinson diseases. ", "one_liner": "Bringing non-invasive brain stimulation from the hospital to the home", "team_size": 38, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1643135801, "tags": [ "Mental Health Tech", "Neurotechnology", "Medical Devices" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "Mexico", "America / Canada", "Latin America", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/actipulse-neuroscience", "api": "https://yc-oss.github.io/api/batches/winter-2022/actipulse-neuroscience.json" }, { "id": 25332, "name": "Craniometrix", "slug": "craniometrix", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/f1c674e348ff1024b2b7b6c8ad74dbad5b1fa520.png", "website": "https://craniometrix.com", "all_locations": "New York, NY, USA", "long_description": "Craniometrix has raised over $21 million to help make dementia suck less.\r\n\r\nDementia is tough – but it can be easier. Turns out, if you give families the right non-clinical coaching and support, you can avoid 30% of hospitalizations for these patients. And Medicare has recently started paying for that coaching.\r\n\r\nWe launched our care navigation service for dementia patients in July of 2025, hit $8M of ARR, and just raised a $15M Series A. \r\n\r\nWe leverage AI to provide best-in-class care, alleviating the burden on providers. Come help us build!", "one_liner": "Using AI to help dementia patients age at home", "team_size": 64, "industry": "Healthcare", "subindustry": "Healthcare", "launched_at": 1646050857, "tags": [ "Neurotechnology", "Health Tech" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "Healthcare" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/craniometrix", "api": "https://yc-oss.github.io/api/batches/winter-2022/craniometrix.json" }, { "id": 25864, "name": "Torpedo Therapeutics", "slug": "torpedo-therapeutics", "former_names": [ "Neural Dynamics Technologies LLC", "Neural Dynamics", "Neural Dynamics Technologies", "Neural Dynamics Technologies Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/29b16aa346e71b9adabcb4e4ad8246dc1ea325db.png", "website": "https://www.torpedotherapeutics.com", "all_locations": "Boston, MA, USA", "long_description": "We are building high-precision implantable neuromodulation devices that can sense and stimulate neural activity in the brain with the goal of transforming the efficacy and adoption of deep brain stimulation (DBS), an existing FDA-approved therapy used to treat Parkinson’s, essential tremor and epilepsy. \r\n\r\n\r\n", "one_liner": "High-precision, closed-loop neuromodulation devices", "team_size": 5, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1645109962, "tags": [ "Neurotechnology", "Medical Devices", "Biotech" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/torpedo-therapeutics", "api": "https://yc-oss.github.io/api/batches/winter-2022/torpedo-therapeutics.json" }, { "id": 29986, "name": "Exin Therapeutics", "slug": "exin-therapeutics", "former_names": [ "EI Therapeutics" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/61d9c34b51f9b98cbfdb92bc0014e3569c29b36c.png", "website": "https://www.exintherapeutics.com/", "all_locations": "San Francisco, CA, USA", "long_description": "We use AI and high-throughput mouse studies to discover therapeutics that modify neural activity in the brain. The initial focus is on epilepsies associated with autism and Parkinson’s disease with the potential to expand to any neurological disorder underlined by a dysfunction in neural activity. Our R&D is guided by AI models trained on high-density multimodal mouse data generated in-house.\r\n\r\nWe are 3 Oxford-trained neuroscientists supported by an experienced SAB from Harvard, Science Corp (ex-Neuralink), EPFL, Meta, and UCL.\r\n\r\nIn 1.5 months since landing in SF, we went from nothing to (1) opening and operating an animal lab in South SF, (2) obtaining a proof-of-concept in mice, (3) building a multimodal AI model that directs our screening approach and (4) submitting two provisional patents; all while utilizing less than 50% of our YC funding. \r\n", "one_liner": "AI drug discovery platform for neurotherapeutics", "team_size": 9, "industry": "Healthcare", "subindustry": "Healthcare -> Therapeutics", "launched_at": 1736839155, "tags": [ "Neurotechnology", "Biotech", "Therapeutics" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "Healthcare", "Therapeutics" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/exin-therapeutics", "api": "https://yc-oss.github.io/api/batches/winter-2025/exin-therapeutics.json" }, { "id": 32134, "name": "Parasma", "slug": "parasma", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/65a63b540239ee3a5538326d626bcceee19f52d9.png", "website": "https://parasma.com", "all_locations": "San Francisco, CA, USA", "long_description": "We write the algorithms to turn brain cells into compute.", "one_liner": "Training human brain cells for AI compute", "team_size": 1, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1782285260, "tags": [ "Machine Learning", "Neurotechnology", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2026", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/parasma", "api": "https://yc-oss.github.io/api/batches/summer-2026/parasma.json" } ]