Gmail
Integrates with Gmail to enable natural language-based email management, including searching, readin...
Get the Systemprompt API key
- Open the Systemprompt console at systemprompt.io/console and sign in (or create an account). (systemprompt.io)
- In the console look for an "API Keys" or "Create API Key" area, create a new key, and copy the key to your clipboard. (Save it somewhere safe; you will paste it into FastMCP in a later step.) (systemprompt.io)
Create Google Cloud credentials (GOOGLE_CREDENTIALS) for Gmail access
- Open the Google Cloud Console and either select an existing project or create a new one. (cloud.google.com)
- Enable the Gmail API for that project (APIs & Services → Library → search “Gmail API” → Enable). (developers.google.com)
- Configure the OAuth consent screen (Google Auth / OAuth consent) — set app name, user support email, user type (External for personal/testing use), and add any test users if required. (ai.google.dev)
- Create OAuth 2.0 credentials: go to OAuth Clients (Credentials → Create Client → choose “Desktop app”), create the client, then download the JSON credentials file (rename to something like client_secret.json). This file is your Google credentials JSON. (ai.google.dev)
Generate the Google OAuth token file (GOOGLE_TOKEN)
- Use the google-auth helper included in the multimodal-mcp-client repository to run the OAuth flow and produce a token JSON (the repository includes a scripts/google-auth README with the exact commands). Clone or download the repo and follow the instructions in scripts/google-auth to run the authorization script and obtain the token JSON. (github.com)
- (If you prefer) you can follow Google’s Gmail quickstart / OAuth examples to perform the installed-app OAuth flow and save the resulting token JSON (token.json). (developers.google.com)
Base64-encode the two JSON files
- On macOS / Linux:
- Credentials: base64 client_secret.json > client_secret.json.b64
- Token: base64 token.json > token.json.b64
- On PowerShell (Windows):
- Credentials: [Convert]::ToBase64String([IO.File]::ReadAllBytes("client_secret.json")) > client_secret.json.b64
- Token: [Convert]::ToBase64String([IO.File]::ReadAllBytes("token.json")) > token.json.b64
- Open each .b64 file and copy the full base64 string (no newlines ideally; if your tooling adds newlines it still usually works but a single-line base64 string is safest).
- On macOS / Linux:
Fill the FastMCP connection interface (use the “Install Now” button you already have)
- Open the FastMCP connection interface and click the "Install Now" / add ENVs action.
- Add an environment variable for the Systemprompt API key:
- Key name: (as required by the server; if the server README only says “API KEY”, use the FastMCP field for API Key or a variable named e.g.
SYSTEMPROMPT_API_KEY) — paste the API key you copied in step 1. (systemprompt.io)
- Key name: (as required by the server; if the server README only says “API KEY”, use the FastMCP field for API Key or a variable named e.g.
- Add an environment variable named
GOOGLE_CREDENTIALSand paste the base64 string produced from your credentials JSON (from step 4). (ai.google.dev) - Add an environment variable named
GOOGLE_TOKENand paste the base64 string produced from your token JSON (from step 4). (developers.google.com) - Save/confirm the connection settings in FastMCP. The MCP server should now have the encoded credentials/token and the Systemprompt API key available.
Post-setup notes & security
- Keep your API key, credentials JSON, and token JSON private — treat them like passwords. Do not commit them to source control. (systemprompt.io)
- The token JSON often contains a refresh token; if you re-run the auth script it may overwrite the token — keep backups if you need to preserve access for multiple environments. (developers.google.com)
- If you have trouble with the multimodal-mcp-client helper, open the repo’s scripts/google-auth README for exact commands and troubleshooting. (github.com)
If you want, tell me the exact field names shown in your FastMCP interface (or paste a screenshot of that form) and I’ll produce the exact text you should paste into each field (including a copy-paste–safe single-line base64 example).
How to Install Gmail
Install Gmail MCP server with one click through FastMCP. Choose your preferred AI development tool below:
Claude Desktop
Click "Claude Desktop" in Quick Start
Cursor IDE
Click "Cursor IDE" in Quick Start
VS Code
Click "VS Code" in Quick Start
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