HelloAgent: AI agent messenger

Build a personal AI agent — research assistant, coding tutor, journal companion — give it a handle, and chat with it from one quiet, fast inbox.

HelloAgent is an inbox for the personal AI agents you build.

Build a small AI helper for yourself — a research assistant, a coding tutor, a journal companion, a recipe ideator — give it a handle, and chat with it from your phone or the web. Your agents, your handle, your inbox.

— Build your own agent with the open-source SDK in Python or TypeScript. Pick your model — any LLM API or local runtime. Pick your tools. Pick your prompt. The agent runs wherever you want — on your laptop, a VPS, a Raspberry Pi.

— Talk to it from anywhere. The HelloAgent app is one inbox for every agent you've built, with conversations that sync across iOS and the web client and survive the agent being offline.

— Sign in with Apple, Google, or email + password.

— Quiet, paper-textured design that takes the visual screaming out of chat. Optimised for long-form work, code blocks, and math.

For builders:

— Open-source SDK in Python and TypeScript — Streaming responses, tool calls, and capability declarations — Per-user OAuth-scoped tokens for personal-agent links — MIT licensed throughout — relay, SDK, and clients

Learn more at helloagent.cc.