Is Oauth2 Mcp safe to use?

Oauth2 Mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install Oauth2 Mcp?

Oauth2 Mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.

What can Oauth2 Mcp do?

Oauth2 Mcp provides 1 tool: Compatibility. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Oauth2 Mcp?

Oauth2 Mcp is compatible with claude-desktop, cursor, claude-code. It uses sse and http transport.

Is Oauth2 Mcp actively maintained?

Oauth2 Mcp is actively maintained — last commit was 5 days ago. It has 4 GitHub stars.

Oauth2 Mcp

Name: Oauth2 Mcp
Author: ruby-oauth

by ruby-oauth

🔮 Rack/Roda-compatible resource-server toolkit for Oauth2.1 MCP Auth

4 1 tool GitHub

No known CVEs

No license

Actively maintained

Last commit 5d ago

Works with most clients

Transport: sse, http

1 tool · ~41 tok

Grade A · 0.0% of 200K ctx

MCPpedia last refreshed this data 16h ago

Edit this pageView history

Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopsse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "oauth2-mcp": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

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[![MCPpedia Score](https://mcppedia.org/api/badge/oauth2-mcp)](https://mcppedia.org/s/oauth2-mcp)

Read me

What Oauth2 Mcp does

if ci_badges.map(&:color).detect { it != "green"} ☝️ [let me know][✉️discord-invite], as I may have missed the [discord notification][✉️discord-invite].

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

70/100across 5 weighted dimensions

How we score →

0255075100

−30

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Inventory

Tools (1)

Click any tool to inspect its schema.

~41 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Oauth2 Mcp safe to use?: Oauth2 Mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Oauth2 Mcp?: Oauth2 Mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.
What can Oauth2 Mcp do?: Oauth2 Mcp provides 1 tool: Compatibility. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Oauth2 Mcp?: Oauth2 Mcp is compatible with claude-desktop, cursor, claude-code. It uses sse and http transport.
Is Oauth2 Mcp actively maintained?: Oauth2 Mcp is actively maintained — last commit was 5 days ago. It has 4 GitHub stars.

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MCP Security Weekly

Get CVE alerts and security updates for Oauth2 Mcp and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Other

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopsse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "oauth2-mcp": {
      "command": "<see-readme>",
      "args": []
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/oauth2-mcp)](https://mcppedia.org/s/oauth2-mcp)

Read me

What Oauth2 Mcp does

if ci_badges.map(&:color).detect { it != "green"} ☝️ [let me know][✉️discord-invite], as I may have missed the [discord notification][✉️discord-invite].

Test This Server

No automated test available for this server. Check the GitHub README for setup instructions.

README

🍲 OAuth2::MCP

[![Version][👽versioni]][👽version] [![GitHub tag (latest SemVer)][⛳️tag-img]][⛳️tag] [![License: MIT][📄license-img]][📄license] [![Downloads Rank][👽dl-ranki]][👽dl-rank] [![CodeCov Test Coverage][🏀codecovi]][🏀codecov] [![Coveralls Test Coverage][🏀coveralls-img]][🏀coveralls] [![QLTY Test Coverage][🏀qlty-covi]][🏀qlty-cov] [![QLTY Maintainability][🏀qlty-mnti]][🏀qlty-mnt] [![CI Heads][🚎3-hd-wfi]][🚎3-hd-wf] [![CI Runtime Dependencies @ HEAD][🚎12-crh-wfi]][🚎12-crh-wf] [![CI Current][🚎11-c-wfi]][🚎11-c-wf] [![CI Truffle Ruby][🚎9-t-wfi]][🚎9-t-wf] [![CI JRuby][🚎10-j-wfi]][🚎10-j-wf] [![Deps Locked][🚎13-🔒️-wfi]][🚎13-🔒️-wf] [![Deps Unlocked][🚎14-🔓️-wfi]][🚎14-🔓️-wf] [![CI Test Coverage][🚎2-cov-wfi]][🚎2-cov-wf] [![CI Style][🚎5-st-wfi]][🚎5-st-wf] [![Apache SkyWalking Eyes License Compatibility Check][🚎15-🪪-wfi]][🚎15-🪪-wf]

if ci_badges.map(&:color).detect { it != "green"} ☝️ [let me know][✉️discord-invite], as I may have missed the [discord notification][✉️discord-invite].

if ci_badges.map(&:color).all? { it == "green"} 👇️ send money so I can do more of this. FLOSS maintenance is now my full-time job.

[![OpenCollective Backers][🖇osc-backers-i]][🖇osc-backers] [![OpenCollective Sponsors][🖇osc-sponsors-i]][🖇osc-sponsors] [![Sponsor Me on Github][🖇sponsor-img]][🖇sponsor] [![Liberapay Goal Progress][⛳liberapay-img]][⛳liberapay] [![Donate on PayPal][🖇paypal-img]][🖇paypal] [![Buy me a coffee][🖇buyme-small-img]][🖇buyme] [![Donate at ko-fi.com][🖇kofi-img]][🖇kofi]

👣 How will this project approach the September 2025 hostile takeover of RubyGems? 🚑️

I've summarized my thoughts in this blog post.

🌻 Synopsis

oauth2-mcp is a Ruby resource-server toolkit for securing HTTP Model Context Protocol servers with OAuth 2.1-style bearer authorization.

It builds on the oauth2 gem for the Ruby OAuth/OIDC substrate and adds the MCP resource-server pieces that generic OAuth clients do not provide.

The gem is intentionally focused on the MCP server side:

protected-resource metadata for MCP endpoint discovery;
WWW-Authenticate bearer challenges;
scope and capability mapping for application policy layers;
provider adapters for WorkOS/AuthKit and generic OIDC/JWKS validation;
explicit audience/resource validation so tokens cannot be replayed against another MCP server.

Token passthrough is not a supported pattern. MCP servers should validate the incoming token for their own resource and issue separate downstream credentials when calling other services. Successful authorization results expose normalized claims and mapped capabilities, not the raw bearer token.

💡 Info you can shake a stick at

Tokens to Remember	[![Gem name][⛳️name-img]][⛳️gem-name] [![Gem namespace][⛳️namespace-img]][⛳️gem-namespace]

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

70/100across 5 weighted dimensions

How we score →

0255075100

−30

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

No package registry to scan.

Inventory

Tools (1)

Click any tool to inspect its schema.

~41 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Oauth2 Mcp safe to use?: Oauth2 Mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install Oauth2 Mcp?: Oauth2 Mcp can be installed by cloning its GitHub repository and following the setup instructions in the README.
What can Oauth2 Mcp do?: Oauth2 Mcp provides 1 tool: Compatibility. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Oauth2 Mcp?: Oauth2 Mcp is compatible with claude-desktop, cursor, claude-code. It uses sse and http transport.
Is Oauth2 Mcp actively maintained?: Oauth2 Mcp is actively maintained — last commit was 5 days ago. It has 4 GitHub stars.

Similar servers

Others in other

View all →

Pi Lean Ctx95

Pi Coding Agent extension (CLI-first) — routes bash/read/grep/find/ls through lean-ctx CLI for strong token savings. Optional MCP bridge can register advanced tools.

3.3k 6

Headroom95

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 60-95% fewer tokens, same answers. Library, proxy, MCP server.

60.9k 3

Brigade93

One local source for the MCP servers, tools, and memory your AI coding agents share, synced into each tool's native config with a review gate and a receipt for every change. No daemon, no lock-in.

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Sigmap92

97% token reduction for AI coding sessions — zero deps, 21 languages, MCP server

598 6

MCP Security Weekly

Get CVE alerts and security updates for Oauth2 Mcp and similar servers.

Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?