Prospero: A new coding harness for a more civilized age

OleksandrC 23 minutes ago | parent | next [-]

If you're looking for an agent implementation that is light on resources, but prefer to work in a terminal, consider also hax (https://usehax.dev/). Less than 2 MB fully static Linux binary, few MBs of RAM use in runtime. Works great with local models also (auto-detects config from running llama-server), besides the usual cloud providers.

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bensyverson 22 minutes ago | parent | prev | next [-]

There are so many cool harnesses I could use if I didn't have an outrageously subsidized Claude subscription

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thekuanysh 19 minutes ago | parent [-]

so what's the point? you can use claude sub.

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mapontosevenths 8 minutes ago | parent [-]

Claude doesn't allow third party harnesses unless you pay the full API price. Attempting to avoid that by pretending to be Claude code gets your account banned. Google is the same and will ban your entire Google account.

AFAIK - Of the big three only OpenAI explicitly allows third party harnesses without paying exorbitant API rates. It's one of the primary reasons I still use them.

To avoid these problems some folks use tools like herdr which operate like tmux or via the SDK to drive the official harness, rather than speaking directly to the API routes.

	▲	NorthSouthNorth a few seconds ago \| parent [-]
		They apparently rolled this decision back.

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thehamkercat an hour ago | parent | prev | next [-]

So much efficient use of space though, would love to have this UI on top of opencode/codex

App-server protocol: https://learn.chatgpt.com/docs/app-server

Opencode: https://opencode.ai/docs/server/

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smashed 27 minutes ago | parent | prev | next [-]

First time I see a software licensed with the Unlicense.

I thought it meant the license was missing on GitHub but, no, it's an actual license called the Unlicense.

But then there is the Community and Pro edition so which is which on GitHub? Is the pro version hidden somewhere?

Plus a c++ code base in 2026. I think modern c++ can be made quite safe but I need some claims that it's taken seriously which I don't see.

I'm confused.

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khalic 4 minutes ago | parent | prev | next [-]

magnus breaths heavily

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eric15342335 an hour ago | parent | prev | next [-]

How does this compare with Zed though?

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post-it 32 minutes ago | parent | prev | next [-]

> (You can’t use your Claude subscription.)

How come?

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smashed 20 minutes ago | parent | next [-]

Anthropic only authorizes their own Claude code to be used with a subsidized subscription.

They want you to use and get accustomed to only their own tools. If other coding harnesses were allowed, it's far too easy to switch providers.

They can't allow that, because they only have a few months of head start.

So everyone accepts Claude code which is required for these sweet subsidized tokens.

	▲	well_ackshually 16 minutes ago \| parent [-]
		That is old. Every harness (herdr, paseo, pi, etc) uses claude through the Agent SDK, and this draws from your subscription, not API pricing. If you're thinking of going with the "but Anthropic could ban every user doing this", if it's good enough for Google to slap it in Android Studio for everyone to use, it's good enough for you in literally any other harness.

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indymike 27 minutes ago | parent | prev | next [-]

The Claude subscription does not include Claude API usage.

Claude behaves in Claude Code somewhat differently vs other coding harnesses (sometimes it's a remarkable improvement) connected directly via api. Also, it cost more than the subscription. There's quite a bit of baked in tooling and assumptions in Claude code that may be good for you, or unhelpful based on what you are doing.

	▲	neuronexmachina 10 minutes ago \| parent [-]
		Minor correction: the $20 Claude subscription doesn't include API usage, but the $100 and $200 subscriptions include a corresponding amount of monthly API credits.

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thih9 28 minutes ago | parent | prev [-]

You’d need to use Claude API pricing (pay as you go, not a subscription).

	▲	post-it 21 minutes ago \| parent [-]
		No you don't, Claude subscriptions allow headless use (either via claude -p or by wrapping the session) for personal use. T3 does it this way.

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BewareTheYiga an hour ago | parent | prev | next [-]

I like how this is laid out. Will have to give it a try.

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lifeisloving an hour ago | parent | prev | next [-]

>Prospero is a native GUI application for Windows, macOS, and Linux

But right above this statement, on the Professional Edition purchase page, it says its only for Windows and Mac..

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devmor an hour ago | parent | prev | next [-]

What a beautiful and space efficient UI. I love Dear ImGUI and the people that build interfaces with it.

Reading through the whole post, this sounds like an thoughtfully and intentionally designed product. One with strong opinions and the developer’s real lessons behind it. In the current era of slopware- especially around AI tooling - this is giving me damn near an emotional reaction. I am happy to see this.

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keepo404 an hour ago | parent | prev [-]

Looks like shit and part with professional edition killed me. Bro are we in 2000?