Nylas API MCP Server
OfficialExperimental server that implements the Model Context Protocol (MCP) for Nylas API, providing resour...
Open the FastMCP connection interface and click "Install Now"
Click the repository's "Install Now" button to open the FastMCP connection / environment form — you will enter the environment variable names and values into that FastMCP UI.Create or sign in to a Nylas account (v3) and open the v3 Dashboard
Sign in at the Nylas v3 dashboard (https://dashboard-v3.nylas.com) or create an account if you don't have one. This dashboard is where you will retrieve your application credentials. (developer.nylas.com)Create a Nylas application (if you don’t already have one) and copy the Client ID
In the Dashboard Overview / Applications area create a new application (or open an existing app). Copy the application’s client ID and save it — this is the value for NYLAS_CLIENT_ID. (developer.nylas.com)Retrieve your Nylas v3 API key and copy it
In the v3 Dashboard, find or generate the application-wide API key (v3 uses an API key to authenticate API requests). Copy that key — this is the value for NYLAS_API_KEY. Store it securely (do not commit to source control). (developer.nylas.com)Decide whether you need a client secret (v2 only) — usually not for v3
Note: Nylas v3 uses NYLAS_API_KEY for application authentication; Nylas v2 used a client secret (NYLAS_CLIENT_SECRET). Only add NYLAS_CLIENT_SECRET if you are intentionally using older v2 behavior. (developer.nylas.com)(Optional) Set the API region URI if your app uses non-default data residency
If your organization uses a non-US data region, set NYLAS_API_REGION_URI to the appropriate base API URL (default US: https://api.us.nylas.com; EU: https://api.eu.nylas.com). Leave it empty to use the default. (v2-5-0.developer.nylas.com)(If using OAuth flows) Configure your OAuth redirect URI in the Nylas app and set the matching env
If your integration performs OAuth (Connect), add the redirect URI you registered in the Nylas application settings and set the corresponding env (e.g., NYLAS_OAUTH_REDIRECT_URI) in FastMCP. The Connect library requires a working OAuth redirect URI. (developer.nylas.com)Enter the environment variables in the FastMCP form
In the FastMCP connection interface (the form opened by "Install Now") add the variables and values you copied:- NYLAS_API_KEY — (required for v3) your v3 API key.
- NYLAS_CLIENT_ID — your application client ID.
- NYLAS_CLIENT_SECRET — (only if using v2 / legacy) application client secret.
- NYLAS_API_REGION_URI — (optional) region API URL if not using default.
- NYLAS_OAUTH_REDIRECT_URI — (if applicable) the redirect URI you registered.
Fill each variable into the corresponding name/value fields in the FastMCP UI and save.
Save and test the connection
Save the FastMCP environment and start the MCP server (for example, run the MCP command or start the integration in your MCP client). Verify that endpoints that require NYLAS_API_KEY / NYLAS_CLIENT_ID authenticate successfully.Security reminder
Keep these secrets private: do not commit them to version control or share them publicly. Use FastMCP's secure env storage and rotate keys if they are ever exposed. (developer.nylas.com)
Quick Start
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Please provide values for the following environment variables:
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started!
The MCP server should open in . If it doesn't open automatically, please check that you have the application installed.
Copy and run this command in your terminal:
Make sure Gemini CLI is installed:
Visit Gemini CLI documentation for installation instructions.
Make sure Claude Code is installed:
Visit Claude Code documentation for installation instructions.
Installation Steps:
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