The Daily Index — Tuesday, April 28, 2026 · TLDR Index

Repositories, courses and useful tools

Resources & Tools

TLDR · GitHub repository

SYMPHONY

Symphony allows teams to manage work instead of supervising coding agents. It turns project work into isolated, autonomous implementation runs. The agents complete tasks and provide Proof-of-Work, allowing engineers to work at a higher level. Symphony works best in codebases that have adopted harness engineering.

github.com

TLDR Dev · Tool

SUP

Sup is a terminal-based email client designed for managing large volumes of mail through tagging and hierarchical threading. It has powerful local search and a Ruby hook system, making it an efficient tool for users who treat their inbox as a searchable archive.

supmua.dev

TLDR Dev · GitHub repository

DIRAC

Dirac is an open-source AI coding agent designed for high accuracy and token efficiency. Available as a VS Code extension and CLI, it provides a powerful, cost-effective solution that reduces API costs by an average of 64.8% through methods like optimized context curation, AST manipulation, and autonomous tool use.

github.com

TLDR Dev · Tool

IS YOUR SITE AGENT-READY?

This is a service to scan websites and determine their readiness for AI agents by checking against multiple emerging standards.

isitagentready.com

TLDR Design · Tool

FAKE WHATSAPP CHAT GENERATOR FREE

GetMimic is a free online tool that generates realistic fake WhatsApp chat conversations for storytelling, marketing, and entertainment purposes.

getmimic.lol

TLDR Design · Tool

CREATE POSTERS WITH AI

This AI poster generator creates social media graphics from text descriptions, offering multiple styles and formats with a built-in editor for customization.

poster.sh

TLDR Design · Tool

BACKGROUND AND WATERMARK REMOVER

Pixflux.ai is a free AI photo editor that removes backgrounds, watermarks, and unwanted objects from images in seconds without requiring sign-up.

pixflux.ai

TLDR Marketing · Tool

110 FREE AGENT SKILLS

Agent skills are markdown files that give your AI assistant context about specific frameworks, APIs, and workflows. This website provides 110 usable skills to optimize workflows, marketing tasks, and more. The skills are compatible with major agentic tools, including Claude Code and Copilot.

yepapi.com