API Startups funded by Y Combinator (YC) 2025

The world’s largest omnichannel communications platform. Bird CRM powers communication between businesses and their customers — across any channel, always with the right context, and on every corner of the planet. Its products and solutions are the foundational building blocks to business communications across preferred channels, like SMS, Voice, WhatsApp, WeChat, Messenger, Email and more. Founded in 2011, Bird connects to billions of devices and is trusted by nearly 20,000 customers worldwide. Headquartered in Amsterdam, Bird operates across nine global hubs — including Singapore, Dublin, Shanghai, Sydney, London, Bogota and Asuncion — and is proud to be a “Work Anywhere” company. Its team of 500 employees represent more than 55 nationalities.

Checkr builds people infrastructure for the future of work. And we believe everyone should have a fair chance to work. That's why we've designed a faster—and fairer—way to screen job seekers. For more information on our mission and products, visit https://checkr.com.

DrChrono develops the essential platform and services for modern medical practices to make care more informed, more interactive, and more personalized. The open platform powers telehealth, electronic health record (EHR), practice management, medical billing, and revenue cycle solutions for physicians and patients, and is fully extensible via a robust API and marketplace of applications and services. The platform is used by thousands of physicians and millions of patients, and is facilitating millions of patient appointments and is processing billions of dollars in medical billing. For more information about DrChrono, visit www.drchrono.com

Axle is Plaid for insurance - a universal API for insurance data. With Axle, companies can instantly verify insurance and monitor ongoing coverage, helping them reduce operational cost while creating a frictionless experience for users. Axle is backed by leading investors including Y Combinator and Gradient Ventures, Google's AI-focused venture fund, and angels from industry leaders like Plaid and Cox Automotive.

Veryfi's cutting-edge multimodal AI transforms documents into structured data with unparalleled accuracy, bulletproof privacy, and lightning-fast speed. Experience the power of data extraction, fraud detection & product intelligence. Veryfi gives you a fully integrated suite of data transformation products for you to securely capture, extract and transform bills, receipts and any other documents into structured data for use in your app, website or backoffice. To learn more https://www.veryfi.com/

APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth. Fern helps companies deliver SDKs and API documentation that they’re are proud to share with their customers. Since launching in 2023, we’ve been trusted by over 200 customers, including industry leaders like Square, Webflow, ElevenLabs, Auth0, and Intercom, to power their developer and agent experiences. We’re fewer than 40 people, based in Brooklyn, NY, and are building open source.

Alpaca is an API infrastructure and licensed financial services company that allows developers and businesses to offer stock and crypto investing to their end-customers. We work with more than 100 companies across the globe to enable their investing products, and our mission is to provide financial services to everyone on the planet. Alpaca’s globally distributed team consists of developers, traders, and brokerage business specialists and backed by a group of well-capitalized investors including Portage Ventures, Spark Capital, Tribe Capital, Unbound, Social Leverage, Horizons Ventures, Y Combinator as well as highly experienced industry angel investors and founders. We are also very tech-enthusiastic with notable track records in open-source and startup communities.

We are making it possible for digital businesses to easily verify individuals and businesses within seconds across Emerging Markets.

Sohar Health is an AI-driven front-end RCM solution that transforms insurance verification processes for healthcare providers, enabling faster patient conversions and reducing administrative workloads. With a 95% automation rate, our API-first platform seamlessly integrates into existing workflows to provide real-time claim accuracy and eligibility checks. Key performance metrics showcase the power of our technology: Median latency of just 6 seconds, ensuring real-time eligibility; over 90% of checks returned within 30 seconds for increased patient conversion; 96% accuracy in identifying and verifying benefits details; Industry-leading 99% accuracy for eligibility determination; >90% carve-out detection rate, mitigating surprise billing risks; a 60% success rate with our Insurance Discovery API, helping identify coverage for self-pay patients. Our customers include outpatient clinics, specialty practices, and digital health platforms looking to streamline front-end claim management. By reducing errors and maximizing clean claim submissions, Sohar Health empowers healthcare organizations to convert and retain more patients, reduce operating costs, and increase their top-line revenue.

Finch is the API to access payroll and HR systems. We allow admins to connect their company in a compliant and secure manner to applications. Finch integrates across providers enabling developers to access a previously closed system and are at the source of truth for employee data and money flow. Our API powers use cases across lending, insurance, benefits, FP&A, and HR applications.

Intuned is an AI enabled cloud platform to author, deploy, and monitor integrations to extract web data and execute browser automation. We enable engineers to build reliable integrations to access data and complete actions on other web services when official APIs are not available or complete.

Founded in 2017, Treasury Prime is an embedded banking software platform connecting enterprise companies to a vast marketplace of banks and product partners to launch next-gen payment ecosystems on their platform. Our banking API offers the quickest, most secure way for fintechs and banks to partner, integrate and build modern financial products and increase revenue streams. We power enterprise-class embedded banking solutions for a range of complex services including money transfer, risk mitigation and integration with bank infrastructure. It's these leading-edge capabilities that helped the company to win Best Banking-as-a-Service Platform from Tearsheet in 2021 and 2022. The company was also named to CB Insights’ annual 2021 Fintech 250 list.

Modern Treasury offers tools that automate the full cycle of money movement—from payment initiation, through approvals, to reconciliation—and are accessible through web application or API.

Roboflow enables developers to make the world programmable. Use our tools to build better datasets (collect image, video / annotate), models (foundation and fine tuned small models), and deployments (self hosted, edge, APIs, SDKs) for computer vision. Over 250k developers, including those from over half the Fortune 100, build with our open source and hosted tools. Build with us: https://app.roboflow.com Hack with us: https://roboflow.slab.com/public/posts/roboflow-hackathons-external-u478m1iz Work with us: roboflow.com/careers

Today’s top Voice AI companies rely on AssemblyAI’s speech-to-text and speech understanding models to launch groundbreaking products fast and to scale with ease.

GoldenBasis makes modern back-office software for brokerages like Schwab or Fidelity, and we’re starting with asset transfers. Every year, $1.1 trillion in assets are transferred between brokerages using decades-old software. Brokerages hire thousands of people to compensate but still lose revenue from abandoned transfers. We solve this problem by automating back-office workflows with AI.

Agentic Fabriq is the single control plane for data permissioning throughout your entire organization across your AI and employees. Through Fabriq, any employee can tap into AI/agents with exactly the data and tools they're cleared to use by an admin. Fabriq can be used internally with employees or externally for customers while handling the auth + integrations + permissions securely for you.

Recall.ai is the API to get recordings, transcripts, and metadata from meetings. We offer several form factors to capture this data: 1. Meetings bots 2. A desktop recording SDK 3. A mobile recording SDK We integrate with meeting platforms like Zoom, Google Meet, Microsoft Teams, and more, as well as in-person meetings. Over 1000 companies rely on our API today to process millions of hours of meeting data. We provide stable infrastructure that typically takes engineering teams 6+ months of time to build, and help our customers get up and running in days instead of months.

Handoff creates instant construction estimates and automates business operations for contractors with AI. Using generative AI technology and access to localized construction costs, Handoff provides remodelers with a fast, accurate, and intuitive way to create construction cost estimates in minutes.

At Gigs, we're building the operating system for mobile services - a platform that enables tech companies to seamlessly embed connectivity into their products. Just as Stripe enables businesses to embed a payment button into any product, Gigs enables businesses to add a connect button and issue SIMs with a single click or API call. From fintechs launching mobile services to HRIS platforms offering work phone plans, we automate phone plan provisioning. We're solving complex technical, operational and regulatory challenges to make connectivity truly effortless. We've grown to a team of around 90 people across the US and Europe, bringing together an experienced team of early-stage engineers, product builders and business athletes from companies like Stripe, Airbnb and Shopify. We know what it takes to solve hard problems. With almost $100MM in funding from Ribbit Capital, Google and Y Combinator, Gigs is one of the fastest growing tech companies. Building on our strong foundation, we’re looking for exceptional candidates who want to do the best work of their lives in a high-paced environment, surrounded by a highly talented, ambitious team. You’ll be joining at an exciting inflection point in our company’s history. At sub-100 people and with a year of hyper-growth ahead of us, opportunity is abundant.

Any business - from travel startups to financial enterprises - can build with Duffel. Shop flights and accommodation, purchase extras, manage bookings and more.

Tailor is the headless ERP that gives fast-growing retail brands a composable, API-first platform to run operations with speed, flexibility, and control. 🧱 Legacy ERP is too rigid: Systems like NetSuite and SAP take months (or years) to implement and break with every change. Tailor is modular, headless, and easy to adapt. 🧩 Point solutions don’t scale: Tools like inventory or order management software solve one problem, but can’t talk to each other or keep up with growth. 📊 Spreadsheets are everywhere: From demand planning to purchase orders, even $100M+ brands still rely on Excel. Tailor replaces duct-taped workflows with ops modules you can tweak, combine, or scale ⚡️ Complex workflows need custom logic: Whether it's multi-location inventory, DTC + B2B orders, or light manufacturing (like kitting or lot tracking), Tailor supports flexible automations out of the box. 👟 Operators can move faster: Launch backend modules in minutes, not months. Tailor's low-code tools let teams build, automate, and adapt without waiting on engineering or implementation agencies. Built for composable retail: - Headless backend with GraphQL APIs - 50+ integrations (Shopify, QuickBooks, 3PLs, etc.) - Custom automations via Pipelines, Functions, and Event Triggers - State machines for approvals and multi-step workflows - AI features like OCR and vector search built in Tailor is already powering operations at fast-growing omnichannel brands and modern manufacturers. We’re proud to be the first Japan-based company to join Y Combinator. Learn more at [tailor.tech](https://www.tailor.tech)

Mux is an API-first video platform designed by experts to make world-class video streaming and analytics possible for every development team. Self-optimizing videos take the guesswork out of encodings, delivery, and renditions. Mux makes your video look beautiful on every device, every time. We offer two products, Mux Video and Mux Data. Mux Video is a simple API to advanced video streaming. Powered by data and designed by video experts, Mux Video makes beautiful video possible for every development team. Post a video or live stream with a single API call, and watch it within seconds. Mux Video handles the encoding, storage, and delivery. QoE and performance analytics provided by Mux Data is included by default for every Mux video stream.This real-time data is used to create the right renditions for every device and title, resulting in greater reliability and better viewer experiences. Mux Data is a Quality of Experience analytics platform that measures the performance metrics that actually matter to viewers: rebuffering, startup time, video quality, and errors. Our intuitive dashboard quickly gives users the insight to find issues and make improvements through features like A/B testing, industry-wide scores, alerts, and detailed information about every single video view. The product works out of the box on HTML5, iOS, Android, and major OTT platforms. All data is available via exports and APIs, making it easy to integrate Mux Data into other systems.

Terminal is Plaid for telematics data in commercial trucking. Companies building next generation insurance products, financial services and fleet software for trucking use our Universal API to access GPS data, speeding data and vehicle stats. Raghav (CEO) and Connor (CTO) led product and engineering at a series b-funded neobank where they spent 2.5 years integrating middleware APIs like Plaid & Stripe. Before that, Connor spent 3 years building software for his family-owned logistics company which was acquired by a private equity firm. Raghav’s family is in fleet operations and owns an HVAC company in San Francisco where they operate a fleet of 13 commercial vehicles.

Web3 developer platform to build, test, and scale blockchain applications. Lightning fast access to 44+ chains like Ethereum, Bitcoin, Solana, Polygon, Optimism, Arbitrum, Avalanche, Near, Stacks, Flow, Tron, zkSync and more. Elastic APIs, advanced ETL, storage (IPFS), powerful tools, analytics, and a 3rd-party marketplace -- all at your command through a simple control panel. Build your next big thing on-chain! Build it with QuickNode.

Skyvern helps companies automate browser based workflows using LLMs and Computer Vision, fully automating manual workflows and replacing brittle or unreliable scripts. Examples include: 1. Automating materials procurement from commerce websites 2. Completing complex multi-step workflows (ie getting an insurance quote from Geico.com) 3. Automatically logging into portals and downloading invoices 4. Navigating legacy content systems to do data extraction or data entry

Photoroom provides photo editing software powerful enough to create outstanding images yet simple enough to be used without any training. We leverage deep learning to translate pixels into objects, drastically simplifying non-creative tasks such as removing backgrounds from images. Our mission: enable entrepreneurs and small businesses to compose images that stand out.

Integuru turns any website into a reliable, real-time, and low-latency API. No RPA required. Our services include authentication management and integration maintenance.

Cosmic is a headless CMS and API toolkit to help teams build modern apps faster, together. We provide a web dashboard to create content and API tools to deliver content into any website or app. Teams benefit from using Cosmic because it eliminates the need to build and maintain their own CMS infrastructure. Teams pay a monthly subscription fee for our hosted CMS and can focus on their application logic, creating great content, and enhancing user experiences.

superglue replaces brittle SQL scripts, cron jobs, and one-off connectors that power enterprise operations with clean, versioned syncs you can actually understand and trust. It rebuilds the logic behind integrations, so migrating systems, adding tools, or scaling processes no longer breaks everything. Companies running on superglue roll out AI projects faster, spend less on maintenance, and future-proof their business for continuous optimization.

Orchestrate custom integrations, workflows & agents in hours, not months. Take control of your integration strategy and breathe easy with maintenance on AI Autopilot. For Product Teams: Build better integration libraries. Build a feature-rich integration library, for your users to enjoy. Offer out-of-the-box integrations that work for you and your customers. Embedded IPaaS typically locks you into connector or endpoint limitations. Versori gives you to tools for limitless customisation. Proactive, self healing agents, scan your connected apps for endpoint or schema changes. You get alerted, Versori AI fixes the change. Embed Versori built integrations into your app with the Versori SDK. Flexible to your development approach with advanced user management. For Operations Teams: Get your internal systems speaking the same language. Deliver integrations for new software in days, not months—so you can start unlocking value immediately. Versori’s speed to value reduces typical deployment fees by half—or more. Low code for speed. Full code for control. No more limits from inflexible integration platforms. For GTM & Sales Teams: Say yes to any prospect's integration request. Stop bouncing between teams to get integrations built. With Versori, Sales can go straight to yes. No more escalations or delays. Versori offer fully managed custom-builds, so your customers get exactly what they need, without compromise.

SnapTrade is an API to connect retail brokerage accounts to any fintech app. We enable API access to real-time account data, historical transactions, and trading. This makes it possible to build new investing experiences with existing brokerage accounts, so users don't need to transfer and it's easier to get started.

Customers expect your SaaS to integrate with all the software they use. With Nango, you ship integrations your customers love, fast. Leverage hundreds of pre-built integrations and unlimited customization.

Mercoa helps AP and Spend management platforms drive more virtual card volume from their BillPay customers. Our agent identifies card-eligible invoices and securely pays them through supplier portals or payment links.

Almost every company that has to integrate with the legacy financial institutions, faces several challenges when it comes to the product cycle. Not only are the APIs and documentations less available, but they are also old school and ridden with errors and loopholes. On top of that, the lack of a single point of contact from the underlying institutions, makes the already long integration cycle of 5 months feel like a temple run between different departments. And since those services break and update over time, you can imagine the nightmare in terms of coordination between the tech teams. We are a full-stack platform where you can come, select your desired modules, play in the sandbox, and launch your product with the APIs and SDKs within a couple of weeks! Not only that, but we also take care of all upcoming fixes, iterations, and updates without breaking any flow. It's that easy, as it should be. Welcome to the future.

Escape fits right into your modern stack and helps teams secure modern applications— Document all your APIs & front-end applications in minutes and discover vulnerabilities even at a business logic level with our proprietary AI-powered algorithm.

Automatically organizes your team's emails and meeting notes. Find anything in seconds, get intelligent email drafts, and reclaim hours every day.

Seam lets developers connect and control 3rd-party connected devices like door locks, thermostats, and more.

FlowEQ is the trusted provider of workflow automation for teams that need to accelerate their work, especially complex processes and high-volume workflows that require human judgment. The FlowEQ Workflow Acceleration Platform includes interactive decision trees that are used by customer support, operations and product teams across all industries to improve accuracy and speed up important recurring work. Using FlowEQ customers get through high-stake recurring workflows 10x faster, saving their companies time and money every day. For additional information, visit www.floweq.com.

Metriport provides real-time access to comprehensive medical data for 300M+ individuals across the US. Our open-source intelligence platform helps organizations access, analyze, and exchange patient data while integrating with all major healthcare IT systems. If you’ve been to doctors in the US, you may have encountered the problem: how does a healthcare provider get access to your up-to-date medical history to treat you properly? Reliance on archaic methods is still the norm: typically, you or your provider need to call the facilities where you’ve previously received treatment (assuming you remember them all), just to have them send your records via fax (yep, fax). This can take weeks, only then to have a provider sift through hundreds of pages of unstructured docs, just to figure out basic things like your active medication list, what conditions you may have, latest lab results, etc. This not only delays care—it can cause improper treatment, since the medical history is critical for informing treatment decisions. Metriport integrates fragmented medical data from thousands of sources—including both national and state/regional Health Information Exchanges (HIEs), ADTs, EHRs, pharmacies, and labs—through a single API connector. The platform then standardizes, deduplicates, and enriches this data to create a comprehensive longitudinal patient record, with AI-powered clinical summaries. Along with a rich understanding of patient health history, healthcare providers also get realtime updates about their patients' health through Metriport. This includes getting notified when a patient is discharged from the hospital, picks up their prescription from the pharmacy, or has a new lab result available. Through this data, care teams get insights across their patient population, helping with 30-day readmissions prediction, care gap closure, risk adjustment, and more. On top of all of this, Metriport enables healthcare organizations to share net-new clinical information back to all major healthcare IT systems, and to become interoperable with popular EHR systems such as Epic, Cerner, athena, eClinicalWorks, and many more—forming an internet for healthcare data. Metriport improves both patient and provider lives at the point-of-care, supporting use cases such as medication adherence, transitions of care management, chart prep, and much more. If you want to do work that matters, get in touch with us today.

We're making it easy, cheap and fun for startups to build on SMS again. Sendo is the most developer-friendly SMS API, with great documentation, a fast dashboard, helpful monitoring features, easier 10DLC compliance and much more. Save 40%+ compared to Twilio and other options, and get started sending messages in 1-2 days instead of waiting weeks for your 10DLC campaigns to get approved.

Deepgram is a foundational AI company on a mission to understand human language. We give any developer access to the most advanced speech AI transcription and understanding with just an API call. Our models deliver the fastest, most accurate transcription alongside contextual features like summarization, sentiment analysis, and topic detection. Beyond that, developers can: 🔊 Process live-streaming or pre-recorded audio 🌎 Transcribe in dozens of languages ⚙️ Train custom models for unique use cases 🔑 Access deep NLU with a unified API 💻 Build in any programming language with our SDKs ✅ Deploy on-prem or on DG’s managed cloud 📈 Get scalable GPU infra for training and inference Deepgram is a proud NVIDIA partner and Y Combinator company, and we recently completed a $72M Series B to define the future of AI Speech Understanding, making us the most-funded speech AI company at its stage.

Panora automates PO entry for distributors, manufacturers and wholesalers. Stop wrong shipments, block duplicates, reclaim ~80% of your order-entry time.

Our mission is to make the web more collaborative. We're not just making collaboration faster—we're crafting it to be the best. Today we’re all using online platforms more than ever before - building, researching, learning, connecting etc. And we're not doing it alone. We're doing it together with other people and machines, turning the internet into the world's biggest team. Yet, the web was built for solo voyages. We saw a shift when platforms like Figma and Google Docs brought a multiplayer approach, breaking down walls and inspiring seamless teamwork. At Velt, we're taking it further. We're on a mission to infuse the magic of collaboration into the fabric of the web—one app at a time. We aim to erase the lines between online and offline co-working, crafting an environment where distance is irrelevant, and 'flow' is the norm. Right now, more than half of work hours are spent on coordination and communication—less on creating. With Velt, we're setting out to reverse these figures, reducing time spent on logistical issues by over 90%. Imagine what we can create when we spend less time talking about work and more time doing it! We're building a better web—a web for us, for our team, for everyone. Join us, and let's accelerate the future of web together 🚀 Our Products: - Velt Collaboration SDK (https://velt.dev/): JS SDK to add powerful collaboration experiences to your own product for your end-users. This helps you ship such experiences ridiculously fast, increase user growth and engagement. - Superflow (https://usesuperflow.com/): JS plugin to enable product, marketing and design teams to comment and collaborate directly on their websites. This helps them iterate and ship their products 10x faster. We’re a team of ex-Googlers. We've launched products like Augmented Reality in Google Search & Maps. Come build a better web with us 🚀

If you’re a founder and feel like you—or your exec team—are too far removed from the customer, Overstand is here to help. We’re the platform (and API) for your customer communications, turning Slack, emails, WhatsApp, call recordings, and more into actionable insights. For example, we can help you discover feature requests hidden in customer emails, spot upsell opportunities from a casual Slack message, or identify a critical support issue buried in a call transcript -- all without having to depend on others in your company to fill out a form or write meeting notes. Get back to Founder Mode by spotting trends, uncovering growth opportunities, and staying deeply connected to your customers. Overstand makes it easy to understand where you’re needed most and take action that drives impact. 🚀

Edit Files at 10500+ tok/sec. The other models you need to build the best coding agents that are fast, reliable, and cheap.

Building a plug-and-play suite of APIs and lending tech stack to enable financial inclusion. OneFin is backed by marquee investors from Silicon Valley like Y Combinator, Khosla Ventures, etc. Leading NBFC, SFB and fintech companies in India are our users. We have enabled loan disbursement/migration of around $2B in last few years across more than 1 million loans across education loans, EV financing, business loans, credit line, 2 wheeler financing, personal loans, invoice discounting, and various other credit products.

Assign Tasks by Call, E-mail, or Message — Your Assistant will Handle the Rest! https://unify.ai ✨

Alpha Vantage provides enterprise-grade financial market data through a set of powerful and developer-friendly data APIs and spreadsheets. Whether you need traditional asset classes (e.g., stocks, ETFs, commodities), economic metrics, foreign exchange rates, cryptocurrencies, fundamental data or even technical indicators, Alpha Vantage is your one-stop shop for global market data delivered through REST APIs.

PoplarML lets you deploy any machine learning model to a fleet of GPUs as a ready-to-use and scalable API endpoint with one command.

The first AI-powered demo platform designed to sell, market and implement technical products with ease. Our visual platform makes APIs more accessible and accelerates commercialization, enabling high-impact digital transformation for the world’s largest enterprises.

Verto is a cross-border payment platform for businesses; our mission is to simplify cross-border payments in emerging markets, particularly Africa. We do this by providing businesses with superb infrastructure that they can use to convert, hold, receive and make payments across 49 currencies. By connecting Businesses, Liquidity providers, FX Brokers, and Payment Institutions, and banks through our marketplace, companies can choose their foreign exchange rates at the time that suits them, therefore, providing a constant liquidity flow cheaply.

The Easiest Way to Make Internet Money. A payments layer for your app that you can program in natural language. Unlimited pricing models, one source of truth, zero webhooks.

Junction is an API for at-home health data that makes it easy for health tech companies to collect data from 100's of wearable devices and deliver at-home test kits to their users. Healthtech companies need lab data as well as wearable data, and we give them access to both through a single line of code.

React Library, API, and Management Toolkit, purpose built for customer-facing dashboards.

Alloy is an integration platform used by Amazon, Gorgias, Postscript, & others to launch ERP, commerce, CRM, and various other integrations. Founded in 2019, the company is backed by $27M from a16z, Bain Capital Ventures, Y Combinator, and others.

Propexo lets engineers build, test, and launch CRE software integrations in days, not months. We modernize the developer experience for our customers, providing clear documentation and robust infrastructure to support the needs of property owners, property managers, & proptechs.

EzDubs is a real-time speech translator. Our proprietary models translate speech without waiting for complete sentences, clone voices on the fly (without enrollments), and even replicate emotions in the translated language. Our iOS and Android apps translate live phone calls, automatically dub voice messages, and auto-translate text conversations so that you can communicate seamlessly across languages, with your voice and emotions. Thousands of users use EzDubs to communicate with friends and family who speak different languages, manage offshore teams, and even have relationships across languages. Visit https://ezdubs.ai to download our app and try a live demo of our real-time speech translator, or reach out to explore how EzDubs can integrate with your communication stack to enable live multilingual conversations.

BlindPay is a stablecoin API that enables companies to send and receive money worldwide using fiat money, stablecoins and multiple blockchains. We handle all the complex compliance and regulatory requirements, so companies can focus on their core business.

The first version of RecipeUI was a viral project at Robinhood that reached 100% adoption from all engineering and QA teams. When an API broke, anyone from Frontend to QA to PMs could debug without relying on backend engineers

Generate AI agents with plain English, edit visually, customize with code in your own IDE. Currently automating millions of tasks across support, sales, finance and more for companies like eToro, Payoneer and JustEat.

Smobi is the AI-powered platform for branded, interactive business messaging, starting with RCS. We help businesses send rich, personalized messages that drive engagement, build trust, and create real conversations.

Inconvo is an all-in-one platform for building and releasing ChatGPT apps. We save companies months of development time by handling connection to SQL databases, AI query guardrails and user authentication.

Fastgen is a low-code API and workflow builder with an integrated Postgres DB. Our drag-and-drop platform allows you to rapidly develop custom APIs and workflows with ease. Our integrated Postgres DB makes it even easier to create, read, update, and delete data in your applications.

Glide lets apps accept crypto deposits from any chain, wallet, or exchange using pre-built wallet funding flows. Users can fund wallets directly — no bridges, no swaps, no repeated KYC.

Svix is the enterprise ready and open source webhooks service. Webhooks are a pain. Developers need to worry about deliverability, retries, monitoring and security. All of which are different for webhooks compared to the rest of the stack. We turn all of that into a simple API call. Svix is sending billions of webhooks for customers both large (Fortune 500) and small (startups), and is backed by Y Combinator, Andreessen Horowitz (a16z), Aleph, and founders and CTOs of companies such as Github, PagerDuty, Segment and Lookout.

S2 is a serverless datastore for real-time, streaming data. The more we worked on data systems, the more we felt like there was a missing building block. The seamless experience of object storage simply did not exist for durable streams – so we set out to fix that! S2 reimagines streams as an unlimited and access-controlled web resource. Like if Kafka and S3 had a baby. - Building agents? Use granular streams to persist context in real time, make workflows auditable, and coordinate between agents. - Publishing fast-moving data? Streams support high fanout and can be accessed directly over the internet, so they are a great fit for broadcasting real-time feeds. - Sandboxing? Emit to per-instance streams, and read history or live events just as easily. - Local-first and multiplayer experiences? Propagate updates reliably and efficiently. Stop dealing with clusters, and start streaming.

At Serif Health, we are taking the complexity out of the cost of healthcare. Our mission is to make healthcare pricing and contracting more transparent, easier to understand, fairer, and ultimately more affordable for all. New price transparency regulations have made a wealth of healthcare pricing and reimbursement data publicly available for the first time, but it is still extremely hard to ingest, organize, and actually use this data to understand the cost of care. That’s where we come in. Serif Health is building healthcare price intelligence data products and APIs to power the future of more transparent healthcare. We are an early-stage, venture-backed startup with a small, collaborative team of healthcare experts, engineers, and designers. We are excited to add new team members motivated by our mission, passionate about making a difference in healthcare, and looking forward to learning and growing from the challenges we will face along the way!

AgentMail is the email inbox API for AI agents. It gives agents their own email inboxes, like Gmail does for humans.

Surge is Stripe for telephony. Our team has experience building telephony software at billion dollar scale. Because of increased regulation, Twilio and other SMS APIs take weeks to onboard new customers, but we can get startups onboarded same day. Surge wins by enabling easy carrier registration, better support, and higher level APIs and no code UI components to make implementation easier for startups and developers.

Oversteer is building browser agents to automate web tasks and turn them into reusable, deterministic APIs. You can integrate the API into any system and automate/integrate any website or portal.

Instead of just links, Andi gives you answers - like chatting with a smart friend. Andi is a new type of search engine that uses generative AI and language models combined with live data to generate factually correct answers to questions, and to explain and summarize information combined from the best sources. Andi works as a search chatbot that's ad-free and privacy-focused. Ask Andi to... ✅ Answer questions 🧠 Find, summarize and explain information 🔍 Navigate and search the web Search is broken because of SEO spam, ads, and surveillance capitalism. Andi cuts through the clutter to get you straight to the knowledge you need. It presents results visually in a way that's easy to understand with a simple chat interface, and protects you from ad tech and distraction.

Klavis AI is Open source MCP integration platform that let AI agents use tools reliably at any scale. Our API provides hosted, secure MCP servers, eliminating auth management and client-side code. Co-founder Xiangkai Zeng co-authored the Gemini paper and pioneered the tool calling infrastructure for Gemini. https://www.klavis.ai/

Tesseral is the open source platform for managing identity and access in business software. It provides enterprise-grade capabilities, including SAML single sign-on, SCIM provisioning, role-based access control, managed API keys, and audit logs, implemented in just a few lines of code. Tesseral unifies access management for employees, customers, services, and AI agents, giving organizations the flexibility to adapt to any deployment model and the authority to enforce security policies with precision. You can learn more by reading our docs at https://tesseral.com/docs or by checking out our GitHub at https://github.com/tesseral-labs/tesseral.

SuperAPI is a programmable API gateway that makes all your fetch APIs cacheable, reducing the response time 10x. Our customers use SuperAPI to cache their critical APIs without spending 6-9 months rewriting their code.

Resend is the new email API for developers. It's designed for you to build, test, and send transactional emails at scale. If you're using Sendgrid, AWS SES, or Postmark, come talk to us.

Enode’s APIs enable you to instantly connect users’ energy devices — including EVs, solar inverters, home batteries and thermostats — to your app.

LogisticsOS provides route optimization and fleet dispatching algorithms as services to let any last-mile company offer same-day and next-hour delivery. We are the creators of the route optimization engine that both FedEx and USPS are using on production today. We increase profit per delivery by 15% and optimize thousands of deliveries in seconds using 30X faster algorithms.

HUBUC P1 is a lightning-fast global card issuing and processing engine. We call this incredible machine P1 because it's fast, lean, and innovative. We believe it's the best, and you should take it for a test drive here: https://www.hubuc.com/

Downlink is a platform that continuously improves your AI. Boost rate limits, slash latency, and raise accuracy.All through one simple API.

SpecCheck is an all-in-one solution that provides accurate prescription eyewear ordering and tracking, seamless billing, and streamlined communication between patients, eye doctors, and their lab partners. SpecCheck’s users work more efficiently and make fewer costly errors, increasing productivity and improving their overall workflow.

Ultralight is a GPU-accelerated toolkit to embed modern HTML in games and native apps. Available for C and C++ on Windows, macOS, Linux, Xbox, PlayStation, ARM64 devices, and more. Developed in collaboration with leading game studios, built GPU-first on a new, lightweight fork of WebKit.

Parse lets developers build APIs for any website in seconds at fractions of a cent per call. Unlike traditional scraping tools that rely on slow, expensive headless browsers, Parse reverse-engineers websites' underlying network requests and generates optimized API endpoints automatically. This makes Parse 10-100x faster and significantly cheaper than browser automation, enabling use cases like real-time price monitoring, lead generation, and data integration that were previously impractical.

Quantstruct automatically creates and improves product documentation, implementation guides, and changelogs for API & SDK products, web-based enterprise software, and internal applications. Quantstruct identifies gaps in your knowledge base based on each product release or unfulfilled customer query. It uses multiple AI agents to search existing knowledge sources, test existing docs for validity and style guidelines, and clicks, scrolls, and uses enterprise software through a web browser to generate docs with embedded screenshots and video recordings. Quanstruct is available as a cloud service to start, targeting technical writers, content writing, professional services, and product teams. Traditional generative AI tools risk hallucinating critical API & SDK fields, even with RAG based approaches. Purely agent-based approaches risk providing unpredictable output that can diverge from desired documentation processes. Finally, no company’s review and publishing workflow is the same. Quantstruct is the easiest way to onboard and customize AI agents to continuously improve your documentation based on your customer needs and product evolution. https://quantstruct.com

Precip uses AI to make hyperlocal weather observations. We’re started with the most important dimension of weather: rain. For example, one of our customers uses Precip daily to make sure their heavy trucks won’t get stuck in muddy fields. Our highly rated mobile app is the best way to see rain and snow totals anywhere.

Pluggy is a B2B Fintech that allows any developer to connect to the data from their users' bank and broker accounts, essentially Plaid for Brazil. We are 100% focused in Brazil. One of the largest markets in the world. Its complexity, risks and challenges require its own solution. Local focus and our deep experience in banking tech engineering allowed Pluggy to create a product that is considered by our customers as the only one to provide reliable data at the right time to market. We currently cover 90% of the bank accounts in Brazil a market of more than 7 billion USD. We are Pluggy!

Palenca is Payroll API for LatAm. We make it possible for any worker to share their employment records and for businesses to uses those records. Like Plaid, but for Payroll. Unicorns like Kavak and Lalamove use us to run background checks and provide financial services.

Cumbuca is an infratech bank for developers to build financial products with direct Central Bank connectivity. Instead of working around unreliable middleware, you get bare-metal access to Pix, payment initiation, and data APIs under our license, so you ship products faster and we handle the compliance. There's no vendor lock-in, and your service will never be disrupted by us.

nCompass is a platform for acceleration and hosting of open-source and custom AI models. We provide low-latency AI deployment without rate-limiting you. All with just one line of code.

Dots is a developer-friendly API that lets businesses pay their contractors through just a few lines of code. Whether its gig workers like Uber drivers, sellers on marketplaces like Etsy, or simply your local handyman - Dots’ abstracts away the complexity of payouts completely. We manage the entire process: information collection (KYC), payments through any rail (ACH, Venmo, CashApp, Zelle, international, and many more to come), and even filing tax forms! Dots lets developers get payouts up and running over just a few hours, rather than the many months this would normally take.

Wingback provides tools and APIs for SaaS pricing and packaging. We are infrastructure that allows SaaS startups to deploy any set of features of their product using any pricing model. It enables non-technical teams to implement pricing and packaging changes and execute product-led growth campaigns without engineering involvement.

Use Nyckel to train and integrate state of the art machine learning into your application. Our ML platform can be used by anyone and it only takes minutes to train your first model. Once trained, your functions is immediately deployed to production grade infrastructure.

Emebedding third-party apps and websites can often be a nightmare due to incompatible platforms, security issues, and poor UX. Adding multiplayer functionality to these embeds makes this problem exponentially more difficult. Enter Hyperbeam—an API that lets you embed virtual computers anywhere, including web, mobile, VR, and even VSCode. You can then open any third-party website or application, synchronize audio and video flawlessly among multiple participants, and add multi-user control with just a few lines of code. Uses cases and customer segments include remote learning, virtual offices, online casinos, productivity, watch parties and more. We are three technical founders from the University of Waterloo, and worked as engineers at Facebook, Yahoo, and Lyft. Our technology is battle-tested–we currently stream over 1.25M hours of video per month across every continent. https://hyperbeam.com?ch=yc

Emobi is a unified legal, financial, and technical infrastructure that delivers seamless, secure, and reliable EV charging across networks—powering apps, fleets, and automakers while maximizing charger utilization. Our secure, fully automated charging technology, JustPlug, works instantly with no special hardware, software, or setup, making EV charging effortless. With 122,000+ EV chargers integrated across the U.S. and Canada, Emobi is recognized as the largest EV charging ecosystem in North America. Backed by two provisional patents and 15+ enterprise customers, Emobi's technology is also trusted by the Department of Energy (DoE) and the Department of Transportation (DoT). To learn more, visit www.emobi.ai.

Dojah is the anti-fraud infrastructure for the internet, helping businesses verify identities, detect fraud, and stay compliant with powerful APIs and no-code tools. Fintechs, banks, and digital businesses rely on Dojah’s solutions for seamless user onboarding, AI-driven fraud detection, KYC & KYB verification, and transaction monitoring. By leveraging government data lookups, biometric authentication, and real-time risk analysis, Dojah ensures businesses can mitigate fraud risks, improve user trust, and scale efficiently while staying compliant with regulatory standards.

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