Grok

grok.com custom MCP is a public URL. The xAI API connects to remote Streaming HTTP and SSE MCP servers.

What the docs say

grok.com adds a custom MCP connector with a server URL. The xAI API remote MCP tool accepts Streaming HTTP and SSE only. Neither path runs a local stdio process.

Auth. Custom MCP on grok.com completes the authentication the server requires. The xAI API can send an authorization token and extra headers. require_approval and connector_id are not supported on that API.

Limits from the docs

A custom MCP server must be reachable on the public internet. localhost and private addresses are rejected.
On Grok Business and Enterprise, a team admin provisions connectors before members can use them.

Setup

On grok.com/connectors, choose New Connector, then Custom, and enter the public MCP server URL.
If the server is on your machine, publish it through a tunnel and give Grok that public URL. OAuth or API keys still apply.
For the xAI API, add a tool of type mcp with server_url and server_label. Only Streaming HTTP and SSE are accepted.

Sources

Grok connectors Checked 2026-10-17
Custom MCP tunneling Checked 2026-10-17
Connector management Checked 2026-10-17
xAI API remote MCP Checked 2026-10-17

Compatibility rule

A listing is included when its directory transport token is one this platform's docs describe. The token is SSE when the transport label contains “sse”; otherwise HTTP when the label contains “http” or the listing has a hosted remote endpoint; otherwise stdio when the label contains “stdio”; otherwise undeclared. Undeclared listings are left out. This is a transport match, not a connection test. MCPwell has not run these servers inside this platform.

Directory transports counted here: remote HTTP, SSE. Only hosted remote listings are included.

Hosted remote listings whose directory token is HTTP or SSE are included. Local stdio-only listings are left out. The deepwiki URL in the API example is an example, not a gallery listing.

Officially listed is a separate mark. It is used only when this platform's own directory or connector gallery names that server and the name matches one listing in this directory. A sentence in a setup example is not a gallery listing. The mark is not a connection test.

MCP servers (24,154)

Paid placements appear first and are labelled Sponsored or Featured; the rest are sorted by GitHub stars. Sorted by GitHub stars as of 2026-10-17. Servers with no public GitHub repo follow, in alphabetical order.

Official or reference Hosted (remote) endpoint

The first 60 cards are in the page HTML. With JavaScript, the filters page all 24,154 compatible listings.

Grok

What the docs say

Limits from the docs

Setup

Sources

Compatibility rule

MCP servers (24,154)

Paperclip

Nextchat

World Monitor

Netdata

Front-End Checklist

Context7 (Upstash)

Tldraw

Metabase

Reactive Resume

PostHog

Ui Tars Desktop

GitHub

Agent Skills Search Server

OpenWork MCP Gateway

Oh My Posh Validator

Skyvern

Compiler Explorer

Keploy

GitDiagram

Coder

MCP Toolbox

MCP Toolbox for Databases

OpenMetadata

Inbox Zero

Apify

Mobilerun

Nhost

openstatus

AIHOT

Sui Knowledge Base (kapa Ai)

Honcho

Firecrawl

Agent-Native Analytics

Business Contact Finder

Basebalance Cloud — X402 Rpc & Gateway

Openshorts

Airweave Search

Klavis

Treg To

Draw Io

Finance Toolkit

Ask Jev

Google Ads + Meta Ads + Ga4

Exa

Jitsu

Tradingview

Mockserver Monorepo

Cloudflare

Tolgee

NotFair-GoogleAds

Radar

Grafana

RevoGrid DataGrid MCP Pro

ShipSwift

Butterbase Oss

Supabase

Omnara

Vexa

Wacli

Medplum

First-party connectors