The Weekly Index
Trends, tools, and tactics for the AI agent ecosystem. Published every Thursday.
Best MCP Servers for Communication in 2026 — Slack, Email & More
The best MCP servers for communication tasks in 2026 — Slack integration, email, calendar, and messaging tools ranked from our index of 4,133 servers.
Best AI Tools for Cursor IDE in 2026 — MCP Servers, Extensions & Plugins
The best AI tools to supercharge Cursor IDE in 2026 — MCP servers, extensions, and plugins. Ranked from SkillsIndex's catalog of 11,393 tools.
MCP Server Security in 2026: We Scored 10,631 Servers — Here Is What We Found
We scored 10,631 AI tools on security. 52.8% score 2/5 or below. Here are the specific risk patterns to watch for and a checklist for safely vetting MCP servers before installation.
What Are GPT Actions? The Complete Guide for 2026
GPT Actions are OpenAI's tool integration protocol for ChatGPT. We index 1,818 of them. Here's what they are, how they differ from MCP, and which ones are worth using.
Best MCP Servers for File Management in 2026 — Ranked & Scored
The best MCP servers for file management in 2026. Filesystem access, document processing, and cloud storage — ranked from our index of 4,133 servers.
How to Install an MCP Server — Step by Step Guide for 2026
Learn how to install MCP servers in Claude Desktop, Cursor, and Windsurf. Step-by-step guide with config examples for the most popular MCP servers.
The Weekly Index #6 — Editor's Picks: The 10 Best AI Agent Tools Right Now (April 2026)
Six weeks in. We have covered databases, browsers, security, cloud platforms, GPT actions, and VS Code. This final issue: our opinionated picks for the 10 best tools in the index — one per category.
Complete Guide to MCP Servers in 2026: What They Are, How They Work & the Best Ones
Everything you need to know about MCP servers in 2026. What they are, how to install them, how to evaluate them, and which ones are worth your time — from our index of 4,133 scored servers.
Free MCP Servers in 2026: 98.9% of Tools Are Free — Here Are the Best
98.9% of the 11,393 tools in SkillsIndex are free or open-source. Here are the best free MCP servers, ranked by security score and GitHub activity.
JetBrains vs VS Code for AI Development in 2026: Comparing AI Extensions
We have 1,341 VS Code extensions and 419 JetBrains plugins in our index. Here is what the scoring data says about which ecosystem wins for AI-powered development in 2026.
MCP Servers vs Claude Skills vs GPT Actions: Full Comparison [2026]
Three ecosystems, one goal — extending what your AI can do. Here is how they actually differ, and when to use each one.
The Weekly Index #5 — GPT Actions in 2026: 1,818 Indexed, All Scored 26–29. Here Is the Honest Assessment.
We have 1,818 GPT Actions in our index. They all score between 26 and 29 out of 100. That is not random — it reflects something real about the state of the ecosystem. Here is the honest read.
Building an AI Research Assistant in 2026: The Best MCP Server Stack
The exact combination of MCP servers that turns Claude into a capable research assistant — with install commands, real scores from our index, and honest caveats about what each tool actually does.
The Weekly Index #4 — Top New MCP Tools, the Cloud Platforms Category, and Your Next Stack
Issue #4: cloud platform MCP servers are underrated, the GitHub MCP server is better than you think, and we spotlight the tools behind the biggest infrastructure stacks.
We Analyzed the Security of MCP Servers in Our Index — Here Is What the Data Shows
We scored over 1,000 MCP servers and AI agent tools on security. 52.8% earned a score of 2/5 or below. Here are the patterns we found, the tools that passed, and how to use this data.
How to Choose the Best MCP Server in 2026 — Practical Guide
With 4,000+ MCP servers now indexed, picking the right one has become the real challenge. Here is a practical framework to evaluate and shortlist.
The Weekly Index #3 — The Rise of Claude Skills: What Our Index of 2,471 OpenClaw Tools Shows
Claude Skills and OpenClaw Skills are the fastest-growing category nobody talks about. We have 2,471 indexed. Here is what the data says about where this ecosystem is heading.
State of AI Agent Tools 2026: We Analyzed 11,393 Tools [Full Report]
We indexed 11,393 AI agent tools across five ecosystems. Here is what the data tells us about where agent tooling stands today and where it is headed.
Best VS Code AI Extensions in 2026: Ranked From 1,341 Extensions in Our Index
We indexed 1,341 VS Code AI extensions and scored them across security, utility, and maintenance. Here are the 10 worth installing — and the honest truth about where the market stands.
The Weekly Index #2 — Security Alert: 52.8% of Scored MCP Tools Have a Red Flag
This week we ran the numbers on MCP server security. The result: more than half of scored tools in our index have a security score of 2/5 or below. Here is what that means and what to do about it.
10 Best MCP Servers for Developers in 2026 — Ranked & Scored
A practical guide to the MCP servers that actually matter. For each one: what it does, when to use it, and how to get started in under a minute.
Best MCP Servers for Web Browsing and Browser Automation in 2026
From headless Chromium to stealth scrapers, we ranked every browser automation MCP server in our index. The winner has 26,000 GitHub stars and a perfect 100/100 score.
The Weekly Index #1 — 11,394 Tools, 1,190 MCP Servers, and the Database Tool You Should Install Today
Welcome to the first official issue of The Weekly Index. Every Thursday: the most useful signal from 11,000+ AI agent tools — scored, honest, no fluff.
Best MCP Servers for Database Access in 2026 (PostgreSQL, MySQL, SQLite)
We scored 8 top database MCP servers across security, maintenance, and utility. Every single one earns a perfect 5/5 on security — here is what the data actually shows.
GEO vs SEO: How AI Agents Are Changing Tool Discovery in 2026
Generative Engine Optimization is reshaping how tools get discovered. The numbers are staggering — and most tool builders are not paying attention yet.