Claude doesn’t use a traditional plugin marketplace — instead, it connects to external tools and services through MCP (Model Context Protocol), an open standard that lets any service build a Claude integration. Here’s a complete rundown of what Claude can connect to in 2026, how those connections work, and how to set them up.
Claude Integrations Available in Claude.ai (2026)
| Service | What Claude can do | Available in |
|---|---|---|
| Google Drive | Search, read, and analyze documents | Claude.ai |
| Google Calendar | Read and create calendar events | Claude.ai |
| Gmail | Read, search, and draft emails | Claude.ai |
| Notion | Read and write pages, query databases | Claude.ai |
| Slack | Read channels, search messages, post | Claude.ai |
| GitHub | Read repos, create issues, review PRs | Claude Desktop / API |
| Zapier | Trigger automations across 6,000+ apps | Claude.ai |
| HubSpot | Read and update CRM records | Claude.ai |
| Cloudflare | Manage workers, DNS, and infrastructure | Claude Desktop / API |
| PostgreSQL / databases | Query, read schema, analyze data | Claude Desktop / API |
| File system | Read, write, organize local files | Claude Desktop |
| Web search | Search the web for current information | Claude.ai (built-in) |
| Jira / Linear | Read and create issues, update status | Claude.ai / API |
| Custom APIs | Any service with an MCP server | Claude Desktop / API |
How to Add Integrations in Claude.ai
- Go to claude.ai → Settings → Connections
- Browse the available integrations and click Connect on any you want to enable
- Authenticate with the service (usually OAuth — you’ll be redirected to authorize)
- Once connected, Claude can use that service in your conversations when relevant
Claude Desktop: More Integrations, More Control
The Claude Desktop app supports MCP server configuration via a JSON config file — giving you access to any MCP server, including self-hosted ones and community-built integrations that aren’t in the official Claude.ai connection list. This is where the integration ecosystem expands beyond the curated set: database connections, local file systems, internal tools, and any API where someone has built an MCP server.
Building Your Own Claude Integration
Any developer can build an MCP server and connect it to Claude. Anthropic publishes the MCP spec openly — you implement the server, and Claude can immediately use whatever tools or data you expose. This is how companies integrate Claude into proprietary internal systems without exposing data to a third party. For the technical implementation, see the Claude MCP guide.
Frequently Asked Questions
Does Claude have plugins?
Claude doesn’t use a plugin marketplace like early ChatGPT did. Instead it uses MCP (Model Context Protocol) — an open standard where services publish integration servers that Claude connects to. In Claude.ai, these appear as “Connections” in Settings. Claude Desktop supports any MCP server via config file.
What apps can Claude connect to?
Claude can connect to Google Drive, Gmail, Google Calendar, Notion, Slack, Zapier, HubSpot, GitHub, Cloudflare, databases, local file systems, and any service that has published an MCP server. The ecosystem is growing rapidly — new MCP servers are added by third-party developers regularly.
How do I add integrations to Claude?
In Claude.ai, go to Settings → Connections and authenticate the services you want to connect. For Claude Desktop, integrations are configured via a JSON config file that specifies which MCP servers to load. Via the API, you pass MCP server URLs in your request parameters.
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