Curated Directory

Agent Registration with auth.md

Open protocol for autonomous agents to self-register for services without human intervention — a standardized auth.md file + HTTP endpoints replace OAuth and sign-up forms.

netxjs-monorepo

Opinionated Next.js + Turborepo starter with Biome linting, TypeScript, shadcn/ui, and pre-loaded Claude Code agent skills and hooks.

Mediabunny

TypeScript library for reading, writing, and converting media files directly in the browser — like FFmpeg, but for the web. Zero dependencies, tree-shakable, and hardware-accelerated via the WebCodecs API.

deepsec

AI-powered vulnerability scanner that uses coding agents to perform deep security analysis of codebases — regex-based candidate matching followed by LLM-driven investigation, with support for distributed execution and PR diff review.

Learn Harness Engineering

A 12-lecture curriculum on building effective harnesses that enable AI agents to complete complex tasks reliably — covering architecture, state management, session continuity, and observability patterns.

npm-deps-cleanup

AI agent skill that audits and reduces JavaScript package dependency footprint — removes unused deps, deduplicates workspace versions, analyzes transitive closures, and applies e18e replacement recommendations. Works with npm, pnpm, Yarn, and Bun.

How We Test TanStack AI Across 7 Providers

How TanStack AI runs 137 deterministic tests across 7 LLM providers in ~2 minutes on every PR using a mock server instead of real API calls.

Accept Markdown

Protocol and implementation guide for serving Markdown to AI agents via HTTP content negotiation — same URL delivers HTML to browsers, Markdown to AI.

Is It Agent Ready?

Scanner that evaluates website compliance with AI agent standards — checks robots.txt, Markdown negotiation, MCP servers, OAuth, and agent protocols.

noqa

AI-powered QA platform that automates mobile app testing with visual AI agents — write tests in plain language, run across iOS and Android on 1000+ real devices.

SEO Lens

Chrome extension that audits SEO metadata on any webpage with instant scoring, structured data validation, and AI-friendly copyable reports for Claude Code and Cursor.

tfjs-zero-to-hero

Re-implementing classic ML models in TypeScript with @tensorflow/tfjs-node, following Andrej Karpathy's Neural Networks. Zero to Hero. Final destination — a from-scratch two-tower retrieval model on MovieLens.

Using Claude Code: The Unreasonable Effectiveness of HTML

Thariq makes the case for HTML over Markdown as Claude Code's output format — richer visualizations, color, diagrams, and easier sharing once agents are the ones authoring and humans rarely hand-edit.

Pullfrog

AI PR review agent from Zod's creator. Dynamically scales effort, uses subagent swarms for large PRs, and runs inside GitHub Actions with batteries-included MCP tools.

quality-code

Rhys Sullivan's TypeScript coding skill — branded types, discriminated unions, end-to-end types, real tests over mocks, OpenTelemetry observability, and picking the right abstractions instead of premature ones.

tabular-nums should be the default for any updating number

Soren makes the case for `font-variant-numeric: tabular-nums` as the default for timers, counters, prices, percentages, scores, and any live data — equal-width digits stop the layout from twitching when numbers change.

Executor

Open-source tool gateway for agents from Rhys Sullivan. Normalizes MCP, OpenAPI, GraphQL, and custom sources into one typed SDK that agents call in a sandbox — built on Cloudflare's Code Mode pattern.

Hex

Open-source, fully native macOS voice-to-text app using local Parakeet TDT v3 models with zero network calls. Press-and-hold a hotkey to record, release to paste the transcript anywhere.

improve-codebase-architecture

Matt Pocock's skill for deepening modules — restructuring prototype code into something long-lived with cleaner layer dependencies and easier navigation.

Google Search (AI SDK)

Vercel AI SDK tool that grounds Gemini model responses with live Google Search results and citations.

Amazon SES

AWS cloud email service for sending transactional and marketing messages via API or SMTP at pay-per-use pricing.

Axiom

Observability platform for logs, traces, and AI engineering telemetry with petabyte-scale ingestion and zero sampling.

Bloom.diy

AI-powered mobile app builder that turns ideas into native Android apps without writing code.

Browser Use

Open-source browser automation harness that lets AI agents navigate and interact with websites at scale.

Cloudflare AI

Serverless GPU inference and agent infrastructure running on Cloudflare's global edge network.

Cloudflare Email Routing

Free email routing service that forwards custom domain addresses to any inbox with optional Workers processing.

Drizzle ORM

TypeScript ORM with a SQL-like query API, type-safe schema definitions, and multi-database support.

Effect Institute

Interactive online learning platform with narrated video tutorials for the Effect-TS library.

Effect Solutions

Prescriptive guide and reference for writing idiomatic Effect-TS programs with setup, patterns, and ecosystem docs.

Effect

TypeScript library for building robust apps with typed errors, structured concurrency, retries, and first-class OpenTelemetry observability.

Exa

Search API built for AI agents, returning fast, high-quality web results with structured content extraction.

Fallow

CLI tool that analyzes TypeScript and JavaScript codebases to find unused exports, dead code, and complexity hotspots.

Firecrawl

Web crawling and scraping API that converts any website into LLM-ready markdown or structured JSON.

Google CheckMX

Google Apps Toolbox utility that checks MX, SPF, and DKIM DNS records to diagnose email delivery configuration issues.

GPTZero

AI content detection platform that identifies text generated by ChatGPT, Claude, Gemini, and other LLMs.

Groq

API provider for open-weight LLMs and Whisper speech-to-text at extremely high inference speeds.

Inboxy

Email warmup service that uses AI and a private inbox network to boost domain reputation and deliverability.

Inkless

Free e-signature platform for uploading, signing, and sending unlimited documents without a subscription.

Instantly

Cold email and outreach platform with built-in email warmup and AI-powered campaign automation.

IPWarmup

Provides pre-warmed SMTP servers with established sender reputation so campaigns can start at full volume.

Langfuse

Open-source LLM engineering platform for tracing, prompt management, evaluations, and production monitoring.

Lighthouse HQ

Immigration platform that guides international professionals through U.S. visa applications with document prep and expert support.

MailReef

Dedicated cold email sending infrastructure with private SMTP servers, dedicated IPs, and unlimited mailboxes.

Mem0

Persistent memory infrastructure for AI agents that compresses context and reduces token usage across sessions.

Models.dev

Open-source database of AI model specs, pricing, and capabilities queryable via a JSON API.

OpenPhone

Business phone system that provides virtual numbers, shared calling, and texting for teams in one app.

OpenRouter

One API to access 400+ LLMs from 60+ providers with automatic fallback and unified billing.

Perplexity API

API platform providing real-time web search and grounded LLM responses with citations via Sonar models.

PlanetScale

Managed MySQL and PostgreSQL database platform with branching workflows for zero-downtime schema changes.

Ragie

Managed RAG-as-a-service that ingests documents and provides hybrid search APIs for AI applications.

React Doctor

Static analysis tool that evaluates React codebases across security, performance, correctness, and architecture, producing a health score with diagnostics.

Reply.io

Multichannel sales engagement platform that automates outreach across email, LinkedIn, SMS, and calls.

Resend

Developer-first email API for sending transactional and marketing email, with multi-language SDKs, a CLI, and React Email templating.

Scira

Open-source agentic research platform that plans, retrieves, and returns cited answers across 17 search modes.

ScrapingBee

Web scraping API that handles headless Chrome rendering, proxy rotation, and anti-bot bypassing automatically.

Smartlead

Cold email platform with unlimited mailbox warmup, AI-driven sending patterns, and deliverability monitoring.

Stagehand

Open-source SDK for building browser agents using natural language instructions instead of brittle selectors.

Supermemory

Context and memory infrastructure for AI agents with hybrid vector search, user profiling, and connectors for Notion, Slack, Google Drive, and more.

telegram-claude

Telegram bot interface for Claude Code on a VPS. Message the bot, it spawns Claude Code in the selected project directory and streams results back — voice notes, streaming responses, session continuity, plan-mode interception.

Turso

SQLite at the edge with unlimited lightweight databases, concurrent writes, and no cold start penalties.

Ultracite

Zero-config preset that wires up linters, formatters, editor settings, and AI-agent rule files for JavaScript and TypeScript projects.

Unipile

Unified API for reading and sending messages across LinkedIn, email, WhatsApp, Telegram, and calendars.

agent-browser

Rust CLI tool for browser automation designed for AI agent workflows with JSON output and screenshot support.

agent-eval

Testing framework for measuring how well AI coding agents perform against your framework or configuration.

Vercel AI Gateway

Unified endpoint to route requests across hundreds of AI model providers with built-in failover and observability.

emulate

Local API emulator that provides stateful, production-fidelity stubs for services like GitHub, Google, and Slack.

json-render

Generative UI framework that lets AI produce dynamic interfaces constrained to a developer-defined component catalog.

just-bash

Simulated bash environment with a virtual filesystem for use in AI agent workflows.

portless

Replaces localhost port numbers with stable named URLs and enables HTTPS and HTTP/2 for local dev servers.

zero-native

Framework for building desktop and mobile apps with Zig backends and web frontends via platform WebViews.

Verifalia

Email validation service that identifies invalid and undeliverable addresses to reduce bounce rates and protect sender reputation.

VERT

Free, privacy-first file converter that runs entirely in the browser using WebAssembly. Supports images, videos, audio, documents, and more with no uploads required.

Zenblog

Headless CMS with a Notion-style editor, hosted media uploads, and a type-safe API client for developer-managed blogs.

auto-pr

Local Node.js loop that turns GitHub issues into pull requests — label an issue `auto-pr` and a multi-step Claude pipeline (research → plan → implement → review) spawns Claude Code and opens a PR.