Launch HN: Inkeep (YC W23) – Open Source Agent Builder

Hacker News (score: 29)
Found: October 16, 2025
ID: 1916

Description

CLI Tool
Launch HN: Inkeep (YC W23) – Open Source Agent Builder Hi HN! I'm Nick from Inkeep. We built an agent builder with true 2-way sync between code and a drag-and-drop visual editor, so devs and non-devs can collaborate on the same agents. Here’s a demo video: https://go.inkeep.com/video.

As a developer, the flow is: 1) Build AI Chat Assistants or AI Workflows with the TypeScript SDK 2) Run `inkeep push` from your CLI to publish 3)Edit agents in the visual builder (or hand off to non-technical teams) 4) Run `inkeep pull to edit in code again.

We built this because we wanted the accessibility of no-code workflow builders (n8n, Zapier), but the flexibility and devex of code-based agent frameworks (LangGraph, Mastra). We also wanted first-class support for chat assistants with interactive UIs, not just workflows. OpenAI got close, but you can only do a one-time export from visual builder to code and there’s vendor lock-in.

How I've used it: I bootstrapped a few agents for our marketing and sales teams, then was able to hand off so they can maintain and create their own agents. This has enabled us to adopt agents across technical and non-technical roles in our company on a single platform.

To try it, here’s the quickstart: https://go.inkeep.com/quickstart.

We leaned on open protocols to make it easy to use agents anywhere: An MCP endpoint, so agents can be used from Cursor/Claude/ChatGPT A Chat UI library with interactive elements you can customize in React An API endpoint compatible with the Vercel AI SDK `useChat` hook Support for Agent2Agent (A2A) so they work with other agent ecosystems

We made some practical templates like a customer_support, deep_research, and docs_assistant. Deployment is easy with Vercel/Docker with a fair-code license and there's a traces UI and OTEL logs for observability.

Under the hood, we went all-in on a multi-agent architecture. Agents are made up of LLMs, MCPs, and agent-to-agent relationships. We’ve found this approach to be easier to maintain and more flexible than traditional “if/else” approaches for complex workflows.

The interoperability works because the SDK and visual builder share a common underlying representation, and the Inkeep CLI bridges it with a mix of LLMs and TypeScript syntactic sugar. Details in our docs: https://docs.inkeep.com.

We’re open to ideas and contributions! And would love to hear about your experience building agents - what works, hasn’t worked, what’s promising?

More from Hacker

Show HN: Docker.how – Docker command cheat sheet

Show HN: Docker.how – Docker command cheat sheet

Show HN: Shellock, a real-time CLI flag explainer for fish shell

Show HN: Shellock, a real-time CLI flag explainer for fish shell

Show HN: Hover – IDE style hover documentation on any webpage

Show HN: Hover – IDE style hover documentation on any webpage I thought it would be interesting to have ID style hover docs outside the IDE.<p>Hover is a Chrome extension that gives you IDE style hover tooltips on any webpage: documentation sites, ChatGPT, Claude, etc.<p>How it works: - When a code block comes into view, the extension detects tokens and sends the code to an LLM (via OpenRouter or custom endpoint) - The LLM generates documentation for tokens worth documenting, which gets cached - On hover, the cached documentation is displayed instantly<p>A few things I wanted to get right: - Website permissions are granular and use Chrome&#x27;s permission system, so the extension only runs where you allow it - Custom endpoints let you skip OpenRouter entirely – if you&#x27;re at a company with its own infra, you can point it at AWS Bedrock, Google AI Studio, or whatever you have<p>Built with TypeScript, Vite, and the Chrome extension APIs. Coming to the Chrome Web Store soon.<p>Would love feedback on the onboarding experience and general UX – there were a lot of design decisions I wasn&#x27;t sure about.<p>Happy to answer questions about the implementation.

Show HN: I created a tool to design and create foamcore inserts for boardgames

Show HN: I created a tool to design and create foamcore inserts for boardgames As a holiday project to test out spec first development using Codex CLI, I ended up creating <a href="https:&#x2F;&#x2F;boxinsertdesigner.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;boxinsertdesigner.com&#x2F;</a><p>It lets you design a box insert in 2D and spits out a cutting list.<p>I&#x27;m looking for feedback, bugs, feature ideas etc and figured this would be a good place to find it :)

No other tools from this source yet.