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Malte Ubl announced a new unified abstraction for agent harnesses on 2026-06-13…

2026-06-13 · 10:33 UTC ·@cramforce ·0 min read

Brief

Malte Ubl unveiled a cross-harness abstraction that lets developers write an agent once and run it on any execution harness to prevent vendor lock-in, linking to Vercel’s changelog. He thanked @felixarntz, noted this fourth item is large software like his Chat SDK, and said he found a long-term owner so it could ship.

Why it matters

Malte Ubl announced a new unified abstraction for agent harnesses on 2026-06-13: “Write the agent once. Run it on any harness” to avoid vendor lock-in (linked: vercel.com/changelog/program…).

Key details

He credited @felixarntz for help and listed his 2026 AI projects: 1) just-bash, 2) Chat SDK, 3) deepsec, and 4) a large-software agent harness now assigned a long-term owner so it could be shipped.

Source evidence

This is number 4: a unified abstraction for all agent harnesses. Write the agent once. Run it on any harness without vendor lock-in
vercel.com/changelog/program…

Huge thanks to @felixarntz for pushing this over the line!

Malte Ubl (@cramforce)

My AI haul this year:
1. just-bash
2. Chat SDK
3. deepsec
4. coming soon[*]

[*] (4) is "large software" like Chat SDK and so I needed to find a long-term owner before being able to ship it and I just did 🥳

— https://nitter.net/cramforce/status/2059281154277360095#m