Anvil – Desktop App for Spec Driven Development

Hacker News

Very excited to share Anvil. I built Anvil to take back control when working with parallel coding agents. It comes with one click worktree isolation, and first class spec support. Claude Code and similar coding TUIs are very eager to get into writing code, even before their human baby sitter fully understands the implication of what they are about to build. The core insight with Anvil is that it is much easier to write high quality code which matches the author's intent after iterating on an external plan with your agent. Align on the architecture, implementation, and verification strategy in a markdown file, then execution is pretty straightforward. This is not a new concept, but the user experience within TUI apps for this workflow is pretty shit. Claude creates non-semantic plan names like "aquamarine-owl" that are trapped within a single agent context. Spinning up multiple agents to check on different aspects of a plan is annoying and slow, and managing terminal tabs is pure hell. So I built anvil, this is a fully open source (MIT license) project.

Visit product View on Hacker NewsMar 27, 2026

Share card

Actual performance

10points

Made the leaderboard

Launch Intel predictions

Analyze your own launch →

Product HuntOn track for Day 1 leaderboard · Strong signals: agents, agent, claude · Missing: mac, macos, cursor

98%98% predicted probability of success on Product Hunt, based on ML models trained on real launch data.

best fitHighest predicted score across all platforms for this description.

Indie HackersFits the IH revenue-focused audience · Strong signals: para · Missing: supports, reddit linkedin, podcasting

72%72% predicted probability of success on Indie Hackers, based on ML models trained on real launch data.

Hacker NewsStrong engagement from HN community · Strong signals: excited, open source, io · Missing: https docs, just released, exist

56%56% predicted probability of success on Hacker News, based on ML models trained on real launch data.

nativeThis product was originally launched on this platform.

AppSumoMay struggle as an AppSumo deal · Missing: plus, platform, intuitive

37%37% predicted probability of success on AppSumo, based on ML models trained on real launch data.

TrustMRRLess likely to generate early MRR · Strong signals: apps, para · Missing: mobile apps, ios, personal

26%26% predicted probability of success on TrustMRR, based on ML models trained on real launch data.

Acquire.comPre-revenue stage for this audience · Missing: arr, mrr, revenue

20%20% predicted probability of success on Acquire.com, based on ML models trained on real launch data.

BetaListMay not resonate with beta-testers · Missing: web3, chat, crypto

0%0% predicted probability of success on BetaList, based on ML models trained on real launch data.

Correct prediction on native model

Similar products

Tracking spec-driven development in the wild44%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Tracking spec-driven development in the wild

Hacker News3

Unofficial ProtonMail Desktop App59%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Unofficial ProtonMail Desktop App

Hacker News2

Saadhn – A Desktop App for JioSaavn63%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Saadhn – A Desktop App for JioSaavn

Hacker News1

Specil – A minimal and helpful tool for Spec-Driven Development45%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Specil – A minimal and helpful tool for Spec-Driven Development

Hacker News1

Shade – A desktop app for local AWS development64%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Shade – A desktop app for local AWS development

Hacker News3

I Made a Claude Skill for Spec-Driven Development (SDD)35%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

I Made a Claude Skill for Spec-Driven Development (SDD)

Hacker News40

Perspec – Scriptable desktop app to correct the perspective of images62%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Perspec – Scriptable desktop app to correct the perspective of images

Hacker News4

Perspec – Scriptable desktop app to correct the perspective of images

Hacker News59

Bowery.io Desktop App74%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

Bowery.io Desktop App

Hacker News12

The most enjoyable desktop app for writing a thesis63%Launch Intel prediction score: how likely this product is to succeed on its source platform, based on its name, tagline, and description.

The most enjoyable desktop app for writing a thesis

Hacker News8

Browse all products Analyze your launch