Agent Signal

Monday digest for agent builders

Agent Signal / Directory

Public index

MCP directory

Official vendor servers and the reference servers the MCP project still maintains. Each entry has the URL, how auth works, a setup snippet, and the date it was last checked. Every entry below was last verified on 6 Nov 2026.

Kind

Runs

Topic

15 servers

  • Cloudflare

    Cloudflare's family of remote MCP servers for docs, Workers, observability, and the rest of the platform.

    Remote HTTPSCloudflare

    Official · Remote · Infrastructure

  • Context7

    Upstash Context7 pulls current, version-specific library docs into the agent so it stops inventing APIs.

    Remote HTTPSUpstash

    Official · Remote · Docs

  • Fetch

    Reference MCP server that fetches a URL and returns markdown. It refuses private addresses unless you turn that guard off.

    Local stdioMCP steering group

    Reference · Local · Web

  • Figma

    Figma's MCP server for design context, Code Connect, and, on the remote server, writing to the canvas.

    Remote HTTPSFigma

    Official · Remote · Design

  • Filesystem

    Reference MCP server for reading and writing files inside directories you explicitly allow.

    Local stdioMCP steering group

    Reference · Local · Files

  • GitHub

    GitHub's official MCP server for repositories, issues, pull requests, and Actions. Use this, not the archived reference server.

    Remote HTTPSGitHub

    Official · Remote · Source control

  • Linear

    Linear's hosted MCP server for issues and projects. A read-only URL is available when the agent should not write.

    Remote HTTPSLinear

    Official · Remote · Product

  • Memory

    Reference MCP server that stores a local knowledge graph the model can read and update across turns.

    Local stdioMCP steering group

    Reference · Local · Memory

  • Notion

    Notion's hosted MCP server for searching and editing a workspace the signed-in user can already access.

    Remote HTTPSNotion

    Official · Remote · Productivity

  • Playwright

    Microsoft's Playwright MCP server. The model drives a browser through the accessibility tree instead of screenshots.

    Local stdioMicrosoft

    Official · Local · Browser

  • Sentry

    Sentry's hosted MCP server for inspecting issues and errors. Scope the URL to one org or project before you connect it.

    Remote HTTPSSentry

    Official · Remote · Observability

  • Sequential Thinking

    Reference MCP server that gives the model a numbered, revisable chain of thought for problems that should not be one-shot.

    Local stdioMCP steering group

    Reference · Local · Reasoning

  • Slack

    Slack's official remote MCP server. An admin has to approve the app; a pasted bot token is not the setup.

    Remote HTTPSSlack

    Official · Remote · Productivity

  • Stripe

    Stripe's hosted MCP server for customers, payments, and the rest of the API, with human confirmation on sensitive writes.

    Remote HTTPSStripe

    Official · Remote · Payments

  • Supabase

    Supabase's hosted MCP server for a project's database, docs, and account tools. Start read-only and scoped to one project.

    Remote HTTPSSupabase

    Official · Remote · Database