# Build brief — a focused alternative to Mymind

> **Verdict:** Partly, if you narrow it · **Buildability:** 54/100 · **Category:** Bookmarks
> **Source:** https://www.canitbevibecoded.com/mymind
> Independent editorial assessment from Can It Be Vibe Coded? Not affiliated with, endorsed by, or derived from Mymind. Verify current pricing and capabilities before acting.

## Context

**Mymind** — A private, single-user place to dump links, images, notes and screenshots that tags and organizes itself so you never file anything. It currently costs $12.99/mo.

The mechanic is honestly simple: capture a thing, extract text and metadata, ask a model for tags, embed it, then search across everything. An agent can build that in a focused implementation with SQLite, a headless browser for page snapshots and one model API call per item. What you cannot one-shot is the capture surface, which is the entire product in practice: browser extensions for three browsers, an iOS and Android share sheet, and the reliability that makes you trust it with the thought you had in a queue. The taste also matters more than it should here, because the pitch is that you never organize anything, and a DIY version that mis-tags half your library quietly becomes a junk drawer. Fine build, real gaps.

This brief describes a focused, single-operator replacement for the part of Mymind that is genuinely reproducible. It is deliberately narrower than the product it replaces, and it says so in writing. Build the useful core; do not pretend to have rebuilt the rest.

## What you are building

Captures URLs, images, highlights and notes into a local SQLite library, auto-extracts text and metadata, asks a model for tags and a one-line summary, then serves a visual masonry grid with semantic plus keyword search.

- Save links with full-page snapshots and fast local search.
- A responsive interface with real empty, loading, success, and error states.

## Requirements

### Functional

- Node 20 and pnpm, runs locally.
- Playwright with Chromium for page snapshots and screenshots.
- Local disk for original images and thumbnails.
- Optional: Tesseract for OCR on screenshots.
- A browser extension loaded unpacked in dev mode.

### Data and integrations

- An LLM API key for tagging and embeddings, in .env.

Each of these needs a real account, credential, or quota. Set them up before writing feature code.

### Non-functional

- Accessibility: semantic markup, labelled controls, visible focus, and reduced-motion support.
- Security: server-side secrets, validated input, and no credentials in the client bundle.
- Reliability: retries with backoff on external calls, and a clear failure state when a provider is down.
- Portability: the operator can export their data and leave without losing it.

## Implementation brief

Build a local-first personal "everything bucket" web app called Mind. Single user, no accounts, no telemetry, no cloud.

Stack, no substitutions:
- Node 20, TypeScript, Next.js App Router, Tailwind.
- SQLite via better-sqlite3, with sqlite-vec for vector search. One file at ./data/mind.db.
- Playwright (Chromium) for page fetch, readable text extraction and a 1200px-wide screenshot.
- One LLM provider read from .env: MODEL_API_KEY, MODEL_BASE_URL, MODEL_NAME, EMBED_MODEL. Never hardcode keys.

Data model: cards table with id, kind (link | image | note | highlight), url, title, author, siteName, textContent, aiSummary, colorHex, createdAt, favicon path, imagePath, thumbPath. Separate tags table and card_tags join. Separate embeddings virtual table keyed by card id.

Capture:
- POST /api/capture accepts { url } or { text } or a multipart image upload.
- For a URL: fetch with Playwright, extract main text, title, site name, favicon, save screenshot and a thumbnail.
- For an image: store the original, generate a thumbnail, run OCR with tesseract.js if available, and skip silently if it is not.
- After extraction, one model call returns 3 to 6 lowercase tags plus a single sentence summary as strict JSON. Then one embedding call over title + summary + first 2000 chars of text.
- Extract a dominant color from the image or screenshot and store it as colorHex for the card background.

UI:
- Home is a masonry grid of cards, newest first, image-forward, no folders and no manual filing anywhere in the app.
- One search input at the top that does hybrid search: SQLite FTS5 over title/text/tags plus vector similarity, merged and deduped.
- Clicking a card opens a detail sheet with the original link, full text, tags (editable) and a delete button.
- Keyboard: "/" focuses search, "n" opens a quick note composer, Escape closes.

Also ship:
- A bookmarklet and a minimal Chrome MV3 extension in ./extension that POSTs the current tab URL and any selected text to http://localhost:3000/api/capture.
- A CLI: pnpm mind add URL_OR_TEXT.
- A tiny import script that reads a Pocket or browser bookmarks HTML export and queues each URL.

Out of scope, do not build: multi-user auth, sharing, mobile apps, hosted deployment, sync between machines, payments.

Write a README with setup, .env.example, a seed script that captures five sample URLs, and make pnpm dev work on a clean clone.

## Delivery standard

- Inspect the repository first, then write a short implementation plan before writing code.
- Deliver the smallest complete end-to-end workflow first; every primary control must work against persisted data.
- Use real validation and storage; never substitute fake dashboards, decorative controls, hard-coded success states, or mock integrations.
- Include responsive layouts plus genuine empty, loading, success, validation, and failure states.
- Keep secrets server-side in environment variables, provide .env.example, and never commit credentials or user data.
- Add structured logs around every external call and return actionable errors without leaking sensitive details.
- Write unit tests for the core logic and one automated test of the main user journey.
- Finish with a README covering setup, architecture, data location, backups, tests, deployment, and known limitations.

## Acceptance criteria

- [ ] A clean install starts the app using only the README and .env.example.
- [ ] The primary journey works from first visit through saved result, reload, edit, export, and deletion where applicable.
- [ ] Invalid input, missing configuration, provider failure, and an empty database each have a usable state.
- [ ] The interface works at 390px and 1440px, is keyboard navigable, and shows visible focus on every control.
- [ ] Tests, type checking, linting, and a production build all pass with no ignored failures.
- [ ] No part of the interface implies a live integration, security guarantee, or scale capability that was not actually built and verified.

## Non-goals

Do not build these, and do not claim to have replaced them:

- Real browser extensions and a mobile share sheet, so capture friction goes way up.
- Image understanding that recognizes objects, art, color palettes and text in photos at Mymind's quality.
- Sync across devices, plus offline capable native apps.
- Serendipity features: the everything-search, the surfacing of old cards, spaced resurfacing.
- Someone else's ongoing judgment about what a good tag actually is.

## What you still own after launch

- Secure credentials, rotate secrets, and handle provider rate limits.
- Run migrations, backups, restores, and dependency updates.
- Test the critical journey after every model, API, or hosting change.
- Monitor failures and fix the edge cases a first prompt will miss.
- Maintain every third-party integration as APIs and OAuth rules change.

## Risk

**Operational risk.** The code is achievable; dependable data, integrations, and ongoing operations are the real cost.

Editorial confidence in this assessment: medium. No reviewed project implementation is linked yet.

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Generated by [Can It Be Vibe Coded?](https://www.canitbevibecoded.com) · Full report: https://www.canitbevibecoded.com/mymind