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CHANGELOG

Product Updates

Track every improvement, feature, and fix.
See how hk3k evolves to better serve your knowledge management needs.

⚠️
Chrome extension retired (March 2026). hk3k is now a web-only app at app.hk3k.ai — works in any browser, no install. Entries below from before March 2026 reference extension features that are no longer part of the product.
May 2026
Latest

Marketing Site Refresh

May 1
  • Rewrote homepage to lead with workspace-first framing ("An entire workspace, one conversation away.")
  • Added "Already have a website? Bring it in." section with side-by-side import comparison demo
  • Demoted website builder from headline product to "one of hk3k's most-loved features"
  • Fixed broken og:image meta tag (was 404 sitewide); regenerated social-share image to match new framing
  • Reframed about, pricing, sites, and changelog pages for congruence with the new homepage
April 2026

Spaces, Agent Loop, Sites, Telegram

April
  • Spaces — unified HyperSearch + Projects into a single tree of folders, conversations, notes, tasks, files, and sites
  • Agent Loop — one prompt creates an entire nested workspace (folders, notes, tasks, conversations, even a published site), every action undoable
  • AI Website Builder — describe a site in plain English; Barnaby plans the pages, writes the copy, sources ethical imagery, and publishes at yourname.hk3k.ai
  • Site Import — bring an existing live site into hk3k by URL; edit it conversationally afterwards
  • Scheduled Tasks — due dates, recurrence, overdue states; reminders delivered in-app or via Telegram
April
  • Telegram Bot (@hk3k_bot) — chat with your second brain from any phone, get task reminders where you already are
  • Barnaby butler personality — optional on/off toggle, privacy-aware forget levels (0=normal, 1=no-LTM, 2=full-privacy)
  • Conversational shared-element propagation — edit a nav, header, or footer once and it updates across every page of a site
  • Custom domains for user-built sites with on-demand TLS
March 2026

Chrome Extension Retirement & Projects Beta

March
  • Retired the Chrome extension. hk3k is now a web-only app — sign in at app.hk3k.ai from any browser. Web app reaches more people, ships faster, and avoids Chrome Web Store review delays.
  • Launched Projects (later renamed Spaces) — phases 1–6 — folders, conversations, notes, tree navigation, drag-and-drop, per-Space instructions
  • Improved Notion sync — multi-user OAuth (each user connects their own workspace), Smart Capture indexing, incremental + full-sync modes
  • Background daemon thread architecture — search responses return in ~500ms even when LTM updates run in the background
February 2026

Infrastructure

February
  • Migrated from Render to a dedicated VPS (12 cores, 24GB RAM, 720GB SSD) — measurably faster end-to-end response times
  • Caddy reverse proxy with automatic Let's Encrypt TLS for hk3k.ai, app.hk3k.ai, api.hk3k.ai, and *.hk3k.ai user sites
  • Switched to async logging architecture — eliminated blocking file I/O from request paths
September 2025

LLM Observability & Search Optimization

September 16
  • Implemented Weave LLM tracing for comprehensive observability
  • Implemented intelligent internet search optimization for AI queries
September 15
  • Implemented auto-expanding input for HyperSearch with proper overflow handling
  • Implemented stacking placeholder spinners for pending search threads
  • Fixed Claude API attachment handling for images and documents
September 14
  • Implemented conversation cloning feature for HyperSearch
  • Fixed attachment handling in HyperSearch continue thread mode
  • Added cosine_similarity method to AIVectorizing class

GreaseRails Architecture & Search Enhancements

September 13
  • Implemented GreaseRails unified search architecture with major refactor
  • Implemented async background verification for search thread embeddings
  • Added import buttons to HyperSearch with dynamic visibility
  • Implemented hybrid keyword + semantic thread search with robust embedding creation
September 12
  • Implemented admin-based access controls across multiple pages
  • Limited conversation imports to 100 at a time
  • Added thread search bar to HyperSearch sidebar
  • Implemented PostHog analytics tracking across all frontend pages
  • Fixed feedback board sorting and added activity tracking
  • Added admin mode to feedback board with delete and status management
  • Added comprehensive feedback board system with user profiles
September 11
  • Added .vercelignore file to exclude unnecessary files from deployment
  • Added PostHog analytics integration for frontend tracking
  • Fixed Notion sync bug: use deep copy to prevent race condition

Authentication, Data Import & API Migration

September 10
  • Fixed Notion sync: OAuth authentication, page counting, and dual sync process
  • Fixed authentication security and added password reset feature
  • Fixed data reset functionality issues
  • Added user-friendly display names for Claude models in AI search receipts
  • Added Claude models to HyperSearch interface
  • Implemented complete LLM API migration architecture
September 8-9
  • Implemented complete Claude data import feature
  • Fixed ChatGPT import to display correct model names
  • Implemented complete ChatGPT data import feature
  • Removed numpy from requirements.txt to fix Vercel 250MB limit
  • Added neo4j package to requirements.txt

Graph Database & Document Processing

September 7
  • Added graph database viewer page with Chrome extension integration
  • Enhanced graph database with comprehensive temporal tracking
  • Fixed graph context retrieval for broad queries in AI search
  • Fixed missing graph context in continued AI search threads
  • Implemented comprehensive graph database integration with Neo4j Aura
September 6
  • Added Excel/XLSX support without pandas dependency - major milestone
  • Added intelligent routing for Word and text document attachments
  • Added intelligent CSV processing with hybrid context compression
  • Fixed .txt file attachment processing
  • Expanded HyperSearch to support multiple document attachments
September 5
  • Added required operation_type to LLM logging for better debugging
  • Used dedicated model for note updates based on eval results
  • Fixed AI search thread tag accumulation and note updates
  • Renamed AI Powered Search to HyperSearch
  • Moved clear button from bottom-left to top-right in search apparatus
  • Renamed SMI to Personalization in user-facing interfaces
  • Fixed AI search streaming text spacing with industry-standard CSS typography

Evaluation Framework & Optimization

September 2-4
  • Updated note generation to use v2_structured prompt (evaluation winner)
  • Fixed encoding issues in note generation test scripts
  • Updated Notion token validation to accept new 'ntn_' prefix format
  • Implemented chain-of-thought tag extraction with gemini-2.5-flash-lite
  • Added tag extraction evaluation framework with quality scoring
  • Implemented relevance check improvements with 2-shot prompt
  • Added tag hierarchy evaluation framework and scripts
  • Refactored search compression to use RecursiveSummaries
  • Optimized SMI updates with gemini-2.5-flash-lite model
  • Added comprehensive LLM evaluation framework for summarization and SMI extraction
September 1
  • Fixed asyncio import error and removed debug statements
  • Cleaned up repository - removed backup files and images to fix Vercel deployment
August 2025

Notion Integration & Smart Capture

August 21
  • Added Notion Setup interface for seamless user onboarding
  • Fixed Edit SMI button in floating interface
  • Enhanced AI search with SMI extraction capabilities
  • Implemented Smart Capture validation with database-only filtering
August 20
  • Redesigned bulk capture UI to match single capture modal
  • Added Bulk Notion Smart Capture feature
  • Enhanced Smart Capture with metadata extraction
  • Updated hotkey to Alt+Shift+R for better accessibility
August 18-19
  • Redesigned AI search interface with Claude-inspired two-row layout
  • Integrated Notion workspace data into AI search
  • Extended token expiration to 30 days for better user experience
  • Added Notion Data Explorer for admin workspace view

Authentication & Infrastructure

August 15-16
  • Implemented JWT-based authentication with Supabase Auth
  • Added Notion OAuth integration with secure state management
  • Fixed OAuth redirects for Chrome extension compatibility
  • Added dynamic API endpoint configuration for local/production
August 13-14
  • Added CORS support for Chrome extension
  • Implemented conditional file logging for Vercel deployment
  • Added configurable semantic chunking model
  • Optimized semantic linking for AI search

Memory & Tag Management

August 12
  • Implemented Pinecone-optimized tag streamlining system
  • Added intelligent tag merging capabilities
  • Updated extension popup with new branding
  • Added URL tracking and display for memories
August 11
  • Fixed tag hierarchy extraction for 551+ tags
  • Added hierarchy breadcrumbs to notes manager
  • Implemented memory receipt system with clickable references
  • Replaced emoji icons with clean SVG icons

AI Search Enhancements

August 8-10
  • Implemented multi-provider AI search with OpenAI and Google models
  • Added chat without internet search mode
  • Implemented AI search verbosity control
  • Added retry logic for Gemini responses
  • Fixed OpenAI image vision capabilities
  • Created distribution packages for non-technical users
  • Migrated to comprehensive token-based authentication
August 5-7
  • Implemented competitor-inspired dual-state search interface
  • Added multi-modal image support to AI-powered search
  • Implemented non-blocking UI for rapid operations
  • Added comprehensive hotkey system
  • Enhanced citation system with [SOURCE X] format
Early August 2025

Notes Manager & UI Improvements

August 3-6
  • Implemented soft delete archive system for Notes Manager
  • Added semantic search functionality to Notes Manager
  • Implemented automatic tag hierarchy organization
  • Fixed Pinecone eventual consistency issues
  • Added comprehensive notes management with AI generation
August 2-4
  • Added modern dark/light mode toggle across all interfaces
  • Implemented clickable search thread titles in notes
  • Added comprehensive search thread management
  • Simplified Chrome extension popup to navigation-only
  • Added pagination to AI-powered search threads
July 2025

Foundation & Core Features

Late July
  • Added AI-Powered Topical Report feature
  • Implemented todo management functionality
  • Added comprehensive tagging system
  • Enhanced memory manager with date sorting and SMI filtering
Mid July
  • Added complete memory manager interface
  • Implemented system message inserts UI
  • Added keyboard shortcuts to Chrome extension
  • Fixed vector ID algorithm with timestamp-based unique IDs
July 17 - Initial Launch
  • Initial commit: Hyper Knowledge project launched
  • Combined Total Recall memory system with AI-powered search
  • Core Chrome extension functionality
  • Basic API infrastructure

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