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Show HN: ManifestGo – AI tuned for MV3 extension boilerplate and edge case

ManifestGo launched as an AI Chrome extension builder that generates complete Manifest V3 projects — popup, background service worker, content scripts, options page, and icons — from a plain-English description, with live preview and a ready-to-install .zip. The tool's Pro tier costs $15 for 300 credits, with unused credits rolling over for up to 3 months and a free tier available, and generated projects use manifest_version 3, MV3 action popups, declarative content scripts, and least-privilege permissions by default. ManifestGo also supports Supabase or Firebase authentication, per-user database reads and writes, persisted sessions, and encrypted API keys owned by the background service worker, and users own the unminified source for publishing under their own Chrome Web Store developer account.

read1 min views1 publishedSep 20, 2026
Show HN: ManifestGo – AI tuned for MV3 extension boilerplate and edge case
Image: source

What is ManifestGo?+ #

ManifestGo is an AI Chrome extension builder. Describe an extension in plain English and it generates the complete Manifest V3 project — popup, background service worker, content scripts, options page, and icons — with live preview and a ready-to-install .zip.

Are generated extensions Manifest V3 compatible?+ #

Yes. Every project uses manifest_version 3, a background service worker, MV3 action popups, declarative content scripts, and least-privilege permissions by default.

Can ManifestGo build full-stack extensions with a database and login?+ #

Yes. ManifestGo ships real Supabase or Firebase authentication, per-user database reads and writes, persisted sessions, encrypted API keys, and third-party API integrations — all owned by the background service worker so no credential ever reaches page context.

Can I publish the code to the Chrome Web Store?+ #

Yes. You own the source. Download the unminified .zip and publish it under your own Chrome Web Store developer account — no attribution or lock-in required.

Do I need to know how to code?+ #

No. Founders and non-developers can ship real extensions from a single prompt. Developers can also refine every file directly.

How do I install the extension I built?+ #

Download the .zip, unzip it, open chrome://extensions, enable Developer Mode, click 'Load unpacked', and select the folder.

Can ManifestGo build complex extensions?+ #

Yes. It handles multi-surface extensions with popup, options page, background worker, content scripts, and context menus.

How much does ManifestGo cost?+ #

Pro is $15 for 300 credits. Unused credits roll over for up to 3 months. A free tier is available to try it out.

Is my API key or data safe?+ #

Yes. Secrets live in the project vault and stay out of the bundled extension. Your generated code is yours.

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