Oauth21 Resource Server

Organization

RedHatProductSecurity

oauth21-resource-server

Enforce MCP servers to act as OAuth 2.1 resource servers by default. Use when building, configuring, or reviewing MCP server authentication and authorization defaults.

Overview

Publisher	RedHatProductSecurity
Repository	`prodsec-skills`
Skill name	`oauth21-resource-server`
Stars	56
Forks	9
Bundled files	Instructions only
License	Apache-2.0
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by RedHatProductSecurity on GitHub. Read the source before you install it.

Installation

Install the Oauth21 Resource Server AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/oauth21-resource-server
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/oauth21-resource-server

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/RedHatProductSecurity/prodsec-skills.git /tmp/prodsec-skills
mkdir -p .claude/skills
cp -r /tmp/prodsec-skills/module/skills/oauth21-resource-server .claude/skills/oauth21-resource-server

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Oauth21 Resource Server in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Oauth21 Resource Server on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Oauth21 Resource Server is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

OAuth 2.1 Resource Server for MCP Servers

Security Requirement

MCP servers MUST be capable of acting as an OAuth 2.1 resource server, and this MUST be their default behavior. The server should not operate without authentication unless explicitly opted out by the deployer.

What "Resource Server" Means

As an OAuth 2.1 resource server, the MCP server:

Accepts and validates OAuth 2.1 access tokens on every request
Rejects requests without a valid token (401 Unauthorized)
Enforces scopes from the token against the requested operation
Publishes its Protected Resource Metadata for client discovery (see mcp_server/protected-resource-metadata)

Default Behavior

Configuration	Acceptable
OAuth 2.1 token validation enabled by default	Yes (required)
No authentication by default, opt-in OAuth	No
API key only by default	No
Open access by default	No

The principle is: secure by default, opt-out only with explicit configuration.

Implementation Checklist

Implement OAuth 2.1 resource server capabilities (token validation, scope enforcement)
Enable OAuth 2.1 as the default authentication mechanism (not opt-in)
Validate access tokens on every incoming request
Return 401 Unauthorized for requests without valid tokens
Enforce token scopes against the requested operation
Publish Protected Resource Metadata (see mcp_server/protected-resource-metadata)
Allow deployers to configure the authorization server, but not to disable authentication without explicit action

Frequently asked questions

What does the Oauth21 Resource Server AI skill do?

Enforce MCP servers to act as OAuth 2.1 resource servers by default. Use when building, configuring, or reviewing MCP server authentication and authorization defaults.

Why use Oauth21 Resource Server on TypingMind?

Because you install it once and use it with any model. Oauth21 Resource Server is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Oauth21 Resource Server in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/RedHatProductSecurity/prodsec-skills/tree/main/module/skills/oauth21-resource-server. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Oauth21 Resource Server?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Oauth21 Resource Server?

As many as you like. As long as a model supports skills, you can use Oauth21 Resource Server with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Oauth21 Resource Server AI skill free?

Yes. It is published on GitHub by RedHatProductSecurity under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

OAuth 2.1 Resource Server for MCP Servers

Security Requirement

What "Resource Server" Means

Default Behavior

Implementation Checklist

Frequently asked questions

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