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FastMCP Google OAuth Server Refresh Token Configuration Guide

By PulseAugur Editorial · [1 sources] ·

This technical article explains how to properly configure refresh tokens for MCP servers using GoogleProvider. It highlights that the OAuthProxy issues its own credentials, which rely on a server-side key-value store for token management. The default file-based storage in FastMCP is unsuitable for cloud-native deployments like Cloud Run or Kubernetes, as it leads to data loss upon server restarts or scaling events. The post details the specific collections within FastMCP that are critical for refresh token functionality and advises on ensuring persistent storage for these collections to maintain continuous operation. AI

RANK_REASON The item is a technical guide for configuring a specific software component.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

FastMCP Google OAuth Server Refresh Token Configuration Guide

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The item is a technical guide for configuring a specific software component.
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17 days old
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  1. dev.to — MCP tag TIER_1 English(EN) · Hiroshi Toyama ·

    Making Refresh Tokens Actually Work in a FastMCP Google OAuth Server

    <p>If you stand up an MCP server with <code>GoogleProvider</code>, OAuth works on the first try. Clients authorize, tools run, and refresh appears to work — until the server restarts.</p> <p>That is not a bug you fix after the fact. It is a configuration decision you make up fron…

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