Saylor InnovationsSAYLOR INNOVATIONS

Home / Guides / AI & Agents

Add Authentication to a Remote MCP Server: API Keys, OAuth and Safe Defaults

By

AI & Agents advanced 8 min read $0.01 Updated 2026-10-19

Securing remote MCP servers: when to use API keys vs OAuth 2.1, bearer token validation, audience and scope checks, per-tool authorization, secure token storage on clients, Origin and DNS rebinding protection, rate limiting, audit logs and least privilege.

A remote MCP server exposes tools to any caller. Require authentication, scope tokens per tool, validate audience, protect against confused-deputy mistakes and log every call.

Read the full guide

The complete walkthrough is $0.01 — or free to read on the site after a quick check. AI agents can buy it directly over x402 with no account.

Open in the Knowledge Base Agent API →
#mcp#oauth#authentication#security#remote-server

Related guides