Connect Gemini CLI to PrompTessor MCP

Gemini CLI supports automatic OAuth discovery for remote HTTP MCP servers. Add only the PrompTessor URL; Gemini opens the browser and manages the OAuth tokens for you.

Run the CLI command, or add the JSON configuration to ~/.gemini/settings.json for user-wide access.

gemini mcp add --transport http --scope user promptessor https://mcp.promptessor.com/mcp
gemini mcp list

Server name

promptessor

Server URL

https://mcp.promptessor.com/mcp

Transport

http

Authentication

OAuth automatic discovery

User config

~/.gemini/settings.json

1. 1

   Add PrompTessor

   Run the command below. User scope makes the server available everywhere; choose project scope instead when the configuration should stay with one project.

2. 2

   Start Gemini CLI

   Open Gemini CLI in an interactive terminal. The first connection attempt discovers that PrompTessor requires OAuth.

3. 3

   Authenticate

   Enter /mcp auth promptessor. Complete PrompTessor sign-in and consent in the browser, then return to the terminal.

4. 4

   Check the status

   Run gemini mcp list and confirm that promptessor is Connected.

5. 5

   Verify

   Ask Gemini to check your PrompTessor usage. It should call get_usage and show your credits and limits.