Bad timing: https://xcancel.com/deepseek_ai/status/2087864589895798968
Why is this bad timing?
DeepSeek Harness developer preview
71–80 of 346 posts
Re: DeepSeek Harness developer preview
#72And that's it, that's the last lab releasing models worth coding with that didn't have a first party harness that its models are trained to use.
Re: DeepSeek Harness developer preview
#73Is there a comparison of harness somewhere? Like, the same prompt to the same model, but with different harnesses, and comparing the quality of the results.
I am trying to run as much as possible only on free software, so I always only used Zed plugged with anthropic models, but I am wondering what is the quality of Zed harness compared to the one of claude code or pi or others... I would love some feedback.
Re: DeepSeek Harness developer preview
#74Tracing what it actually did. Who would have thought that's a good idea, instead of trying to obfuscate everything.
Re: DeepSeek Harness developer preview
#75Good idea, ugly landing page
Re: DeepSeek Harness developer preview
#76Earlier quoted context omitted.
aren't 3 and 4 a tradeoff though? Yes you have 3 but "decent performance" cannot be an extaled value as compared to "runs everywhere". If its used as a counter balance to 3 then it shouldn't be its own unique point basically saying 4 is true despite 3 in this case.
when you're waiting for network or LLM inference the raw performance doesn't matter at all
This is so very, very incorrect.
Re: DeepSeek Harness developer preview
#77I have read the underlying paper, and found it may be useful, but not that useful. For those who want to know what it achieves: it adds hot-reload and dynamic enable/dispose capabilities to a plugin system, like the one in Pi agents, though they push the boundaries further, to the UI components and so on. For those who want to know what it does: if you have some PLT knowledge, ask your agent to explain the algebra to…
Uh, it’s big idea is a destructor? This is considered significant in 2026 and the era of vibe coding?
Re: DeepSeek Harness developer preview
#78Earlier quoted context omitted.
1. it's built for async 2. runs everywhere 3. interpreted, making it fast to iterate on 4. decent performance 5. most popular language, llms are decent at writing it
An additional benefit of interpreted, I think, is to make plugins easier to distribute and incorporate. With a compiled language you’d need message passing or something.
dynamic linking was invented pretty long time ago
Re: DeepSeek Harness developer preview
#79[deleted]
Re: DeepSeek Harness developer preview
#80Is there a reason why so many of these agent harness are written in node.js?
Because:
1. The first significant agentic harness was made by Anthropic.
2. One of the most senior developers of client-side software at Anthropic is Felix Rieseberg, one of the original creators of Electron. [1]
3. After Claude Code blew up, everyone else copied Anthropic.
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1: https://daringfireball.net/2026/07/claudes_criminally_bad_ma...