Companies that have already released official MCP servers for public use include PayPal, Notion, HubSpot, CloudFlare, Atlassian, Slack, and GitHub. There are also third-party providers building MCP servers. Zapier, for example, currently offers MCP connections to 8,000 different apps.
If a vendor doesn’t offer their own, official MCP server, someone else might set up unofficial ones that use the vendor’s APIs. For example, there are already MCP servers out there for LinkedIn, Spotify, eBay, YouTube, AWS, Zillow, and many other platforms, some more trustworthy than others. Developers and power users are downloading them and using them to give their AI agents access to those platforms, but it’s not always obvious where some of these less-than-official MCP servers are coming from, who’s maintaining them, and what else they do under the covers.
Pulse MCP lists over 6,000 servers. MCP marketplace MCP.so currently lists more than 16,000. And a GitHub search for “MCP server” produces more than 45,000 results.
