Harper

05/15/2026

The citizen developer era is here, but the real question is whether AI-built apps can actually run inside the enterprise.

Stephen Goldberg explains why Harper’s unified runtime, built-in governance, and deployment flexibility make it the right foundation for what comes next.

https://www.harper.fast/resources/why-harper-is-the-definitive-platform-for-enterprise-citizen-developers

Harper bridges the gap between business agility and IT security. Utilizing a unified runtime, Harper Fabric guarantees data sovereignty across any environment, from public clouds to air-gapped facilities. Empower users with secure, compliant AI application development and robust governance.

05/14/2026

Everyone is building agents on Harper right now.

And the more people build, the more compelling the case gets.

Jeff Darnton’s latest article shows one strategy for turning coding agents into a real development system: dispatched agent teams that plan, build, QA, and review in parallel, with humans still owning direction.

The big unlock: Harper’s unified runtime gives agents fewer systems to understand and more room to build.

Harper enables production-grade agentic engineering by collapsing database, cache, runtime, and messaging into one process, reducing agent complexity and review burden. A multi-model dispatch workflow lets specialized agents plan, code, QA, and review in parallel while humans retain control over cri...

05/12/2026

We’re going LIVE to build the ultimate river flow forecasting app. We're fusing live USGS stream gauges + snowpack data with an AI agent to predict flows based on historic records. We're also building a personal river log feature! 📝🤖

https://www.youtube.com/watch?v=RLT8w5udT04

04/16/2026

New from Harper: rocksdb-js.
→ Full transaction support
→ Lazy range iteration
→ TypeScript API
→ Prebuilt binaries
→ Built-in transaction log

A ground-up open source RocksDB binding for Node.js. Huge thanks to Chris Barber.

rocksdb-js is a modern Node.js binding for RocksDB, offering full transaction support, lazy range queries, and a TypeScript API. Built for performance and scalability, it enables reliable write-heavy workloads, real-time replication, and high-concurrency applications in Harper 5.0 and beyond.

04/15/2026

Harper 5.0 is open source.

Because we believe the future of software, especially with AI agents, is a unified runtime, not a fragmented stack.

Fewer layers. Smaller surface area. Better reasoning.

That’s how AI goes from prototype to production.

Full story ↓
https://www.harper.fast/resources/open-sourcing-harper

Harper is now open source, with its core platform released under Apache 2.0 and enterprise features source-available. This shift builds trust, enables community contributions, and positions Harper as a unified, transparent platform for developers and AI-driven applications.

04/13/2026

Harper 5.0 is live.

Our core runtime is now fully open source (Apache 2.0), with Harper Pro source-available under ELv2. Now with RocksDB + LMDB support.

One platform for database, cache, messaging, and app logic—built for performance and scale.

Read more:

Harper 5.0 launches with an open-source core, RocksDB support, and a unified runtime for AI agents—cutting latency and simplifying modern app development.

04/10/2026

🚀 New podcast episode with Daniel Roe, lead of the Nuxt framework.

We discuss Nuxt 3, 4, the upcoming Nuxt 5, open-source leadership, and what teams should know before upgrading their apps.

If you're building with Vue or Nuxt, this is a must-watch.

🎧 Watch now https://www.harper.fast/resources/maintaining-momentum-versioning-stability-the-road-to-nuxt-5-with-daniel-roe

In this podcast episode, Daniel Roe, lead of the Nuxt framework, shares insights on Nuxt 3, 4, and the upcoming Nuxt 5 release. We discuss open-source development, upgrading Nuxt apps, Vue-powered full-stack web apps, version maintenance, and the future of modern web development.

04/03/2026

Most AI agents spend more money talking to LLMs than they need to.

The fix isn't a smarter model. It's a smarter runtime.

We built an agent on Harper with semantic caching. Same question twice? Served from the vector index. Zero LLM cost. Sub-50ms. Savings compound over time.

One runtime. One process. One deploy command.

https://dev.to/harperfast/build-a-conversational-ai-agent-on-harper-in-5-minutes-4l4

03/20/2026

From pro drummer to open source maintainer.

Trezy shares his path into software engineering, work on PixiJS, thoughts on AT Protocol + Bluesky, and why data sovereignty matters for devs.

Great insights for builders 👇
https://www.harper.fast/resources/inside-pixijs-at-protocol-and-modern-game-development-with-trezy-who

03/03/2026

What if the toughest part of agentic engineering wasn’t the model, but deployment?

With Harper’s unified runtime and declarative design, AI goes from idea to live system without the human wiring. The last-mile problem is solved. 👇

A 6-minute read for anyone building the future of AI-native software Every AI lab in the world is racing to build a better model. Smarter reasoning.

02/26/2026

This is the dawn of a build-your-own era.

One where you don’t just configure SaaS tools… You build what you need, faster, cheaper, and more powerful.

Let us be clear: THIS ISN'T HYPE

Take this example:
https://buff.ly/27lrdCT

In three days, Stephen built an AI ops assistant that replaced $2400/month in SaaS tools, for under $100/month.

Why does this matter?

Because AI is spectacular at producing structured, declarative artifacts, the things that actually define systems:

• config.yaml
• schema.graphql
• resource.js

But it gets slowed down when the system is scattered across half a dozen vendors, APIs, and services.

With a unified runtime (like Harper), the AI doesn’t have to guess where the pieces live. The entire backend becomes a clean target for generation and iteration.

You describe what you want.
AI generates the config.
It defines the schemas.
It wires the logic.
It deploys.
Done.

No months of vendor evaluation, followed by endless roadmap requests and half-built integrations.

If you’ve ever been frustrated by waiting on SaaS features, external APIs, fragmented systems, or consulting timelines, this moment is for you.

Read the full story here:
https://buff.ly/27lrdCT

Last month, one of our engineers typed this into Slack: /incident what would cause basic...