The API for complete, real-time user context. Let users bring their habits, history, and preferences to your app—securely, instantly, in a tap.
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The API for complete, real-time user context. Let users bring their habits, history, and preferences to your app—securely, instantly, in a tap.
Letting users bring their habits and preferences with just a tap makes personalization effortless and secure.
Crosshatch
Hey Product Hunt! 👋 I’m Soren, co-founder of Crosshatch. We’re thrilled to share what we’ve been building.
What is Crosshatch?
Crosshatch is the API for complete, real-time user context. It lets users securely bring their habits, behaviors, and preferences to your app—in as little as a single tap.
Why did we build this?
AI-driven personalization is fundamentally broken. Apps don't know who we truly are, what matters to us, or how to adapt to our changing needs.
To compensate, apps and agents push us through long onboarding flows that are tldr and still fail at real personalization. This results in experiences that feel generic, invasive, or just plain wrong.
We asked ourselves: Instead of apps tracking us, what if we could bring our own context and AI? With just four lines of code, Crosshatch enables apps to instantly access complete, real-time user context—delivering personalization that feels intuitive, not intrusive.
What makes Crosshatch different?
🚀 Real-time adaptive personalization: Unlike CDPs or memory layers, Crosshatch dynamically updates based on user activity from across all connected apps. Apps can subscribe via webhooks, making personalization genuinely adaptive in near real-time.
🔐 User-driven privacy: Inspired by Apple-style permissions, users control exactly when, how, and for what purpose data is shared—either “while using” or “always.”
💡 Zero-friction developer experience: Just one simple AI API call delivers instant, permissioned user context, transformed by top LLM models.
What’s next?
We're laser-focused on empowering developers to build the next generation of AI-driven, hyper-personalized apps. If you’re working in AI, consumer tech, or personalization, we’d love to connect!
🔗 Try Crosshatch today: playground.crosshatch.io | docs.crosshatch.io | Follow us on @getcrosshatch or @hypersoren.
Excited to hear your thoughts—What would you build with Crosshatch? What questions do you have? Let’s chat below!
Crosshatch
@_seandavid 🙏🙏
Crosshatch
@john_tans Thanks!!
Yes – you can think of Crosshatch as similar to "Continue with Google," but when users sign in with Crosshatch, apps gain access to their personal AI with complete context. Our Link follows standard OAuth 2.0 - you can see more in our docs.
I think the core difference between standard OAuth and Crosshatch is that Crosshatch unlocks access to data and AI resources we manage on behalf of users, whereas, of course, Auth0 is focused on identity and access for applications' backends alone.
looks like a useful b2c utility! gotta be honest, still trying to understand the use cases here. so the user comes to my product and if i have crosshatch, they can connect other profiles and apps and personalize 'my app' based on other outside apps? and we can then use that in our onboarding?
btw really like your brand design! from logo to fonts - everything is super on point.
Crosshatch
@andrew_white_13 Thanks for the kind words on our branding—we really appreciate it!
Exactly right. Think of Crosshatch like "Continue with Google" or "Continue with Apple." When users choose "Continue with Crosshatch," they securely connect profiles from other apps to yours. Our API then gives you instant access to this rich context, so you can immediately personalize your app, streamline onboarding, and provide experiences aligned with their existing behaviors and preferences.
Crosshatch
@andrew_white_13 Definitely!
So far we've focused on consumer because consumers don't usually have compute to unify their data, whereas businesses often do. Consumers can benefit from having someone administer a 'personal AI' on their behalf, whereas a business might do it themselves.
For internal business use cases, we're very excited about Anthropic's MCP, which enables business users to connect AI like Claude to all their internal data. It turns out Claude is very good at pulling in context + taking action all just from chat! Crosshatch came first, but Crosshatch is essentially a variant of MCP.
Really novel and powerful idea! Do you have any high level stats on the size of your userbase?
This might be helpful for app developers to gauge if it's worth the time investment to integrate w/ Crosshatch.
Crosshatch
@tleyden Thanks for your note!
We're deploying with a few apps now – no early stats to share yet!
Crosshatch works like Plaid – users can link their data in a few taps. We're working hard to make adding Crosshatch simple e.g., with our Playground or adding our complete docs to Claude and having Claude write integrations.
@srnlrsn Tag line idea for you: "Plaid for user data" - inspired by @rajiv_ayyangar :-)
Crosshatch
@rajiv_ayyangar @tleyden 👀👀