The Daily Index — Thursday, October 15, 2026

Repositories, courses and useful tools

Resources & Tools

TLDR · GitHub repository

PG_VECTORSEARCH

pg_vectorsearch is a PostgreSQL extension for high-performance Approximate Nearest Neighbor search.

github.com

TLDR AI · GitHub repository

GOOGLE HARNESS² FOR RECURSIVE SELF IMPROVEMENT

Google Research's Harness² lets agents iteratively improve their prompts, tools, memory, and orchestration without changing model weights. It refines the harness for each task and then carries evidence-backed lessons forward to improve future tasks.

github.com

TLDR Dev · Tool

SCREEN RULER

Screen Ruler provides browser-based tools for measuring layouts, inspecting CSS, previewing responsive viewports, and editing pages live.

screen-ruler.com

TLDR InfoSec · GitHub repository

ARGUSSCANNER

Windows network scanner that finds AI/ML services and MCP servers on your network (shadow AI discovery). Signed, self-updating detection signatures. Runs as an MCP server too.

github.com

TLDR InfoSec · GitHub repository

AWS-FIRMWARE-DUMP

aws-firmware-dump is a tool to acquire the disks of an AMI that you can launch and store them in S3

github.com

TLDR Design · Tool

REFINED UI COMPONENTS WITH SATISFYING HOVER

Open Source UI components built on a design philosophy where every animation serves a functional purpose — motion is information, not decoration.

fluidfunctionalism.com

TLDR Design · Tool

THE MISSING FOUNDATION FOR AI-GENERATED WEBSITES

Prime UI is the missing foundation for AI-generated websites. Go from sitemaps and wireframes to production-ready Next.js and Tailwind CSS code in minutes.

primeui.com

TLDR Design · Tool

BUILD YOUR OWN DESIGN APPS WITH AI

Toolcraft is an open-source starter kit and UI library for building custom design apps with AI. Use it to create branded asset generators, explore new visual styles, and turn repetitive design tasks into reusable tools.

toolcraft.sh

TLDR Marketing · Tool

CHECK OUT THIS YEAR'S BUZZIEST HALLOWEEN TRENDS

This interactive site from Google contains the year's top trending Halloween searches, led by horror-character costumes, cauldron crock pots, and gothic and mascot horror movies.

frightgeist.withgoogle.com

TLDR Data · GitHub repository

SQLBUILD: SAFE REFACTORING FOR WAREHOUSE SQL

SQLBuild is an open-source SQL and Python transformation framework for safely changing warehouses. It checks contracts and lineage before execution, runs graph-level tests and production diffs, and lets teams rename incremental models or columns while preserving history and compatibility views. A local DuckDB playground makes it easy to evaluate. Snowflake, Postgres, BigQuery, and Databricks adapters are available.

github.com

TLDR Data · GitHub repository

PHOENIX

Phoenix is a self-hosted, open-source AI observability platform for tracing, evaluating, and debugging LLM applications. It captures OpenTelemetry traces; offers retrieval and response evaluations, versioned datasets, and experiments; and supports prompt testing and replay. Framework- and provider-agnostic instrumentation makes it useful for teams that need to diagnose agent behavior and measure changes before production.

github.com

TLDR Data · GitHub repository

XERJ

XERJ is an Apache-2.0, Elasticsearch-compatible local search engine that automatically indexes code, logs, PDFs, SQLite, and CSVs into typed datasets for agent retrieval, incident analysis, and RAG. Its autoindex workflow avoids schema setup and returns ranked passages with file and line locations. The project defaults to local operation, although optional reranking can send text to an external provider.

github.com