MCP servers · SendGrid · MCP server
Connect Gemini CLI to SendGrid
One line gives Gemini CLI your SendGrid account as tools: 5 endpoints, send email, contacts, templates, called with your own connection. No key in the prompt, a receipt for every call, revoke Gemini CLI's access alone any time.
Three steps
- Create a free 0n3 account and connect SendGrid. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Gemini CLI. Google's terminal agent. One command at user scope.
- Ask Gemini CLI: whoami. Then: "Send an email in SendGrid".
Install (user scope)
gemini mcp add --scope user --transport http 0n3 https://0n3.app/mcp -H "Authorization: Bearer <your 0n token>"
The line above carries a placeholder; 0n3.app/install mints a real key named for Gemini CLI and fills it in.
What Gemini CLI can then do in SendGrid
Send email · Send transactional emails1
Send an email
POST /mail/sendContacts · Manage email contacts and lists2
Add contacts
PUT /marketing/contactsSearch contacts
POST /marketing/contacts/searchTemplates · List email templates1
List templates
GET /templatesMore · Everything else this app exposes.1
List lists
GET /marketing/listsSendGrid in other AI clients
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