AgentIndex icon
AgentIndex
authserver logo
authserver
★ 81
vs
mcp-hangar logo
mcp-hangar
★ 18

authserver vs mcp-hangar

authserver: Authplane is a self-hosted authorization server designed for the Model Context Protocol (MCP), simplifying secure authentication and authorization for AI agents and services. It handles token issuance, validation, IdP federation, and agent-to-agent delegation, offering a complete solution for securing MCP servers.; mcp-hangar: MCP Hangar is a self-hosted policy enforcement plane for your MCP server fleet, providing deterministic admission and egress policies, attributable audit, and SIEM export. It ensures tool integrity by enforcing tool-schema digest pinning, preventing unauthorized changes to tool descriptions.

01

TL;DR

authserver logo
authserverSecurity & Safety · ★ 81

Securing new or existing Model Context Protocol (MCP) servers.

Read authserver full review →
mcp-hangar logo
mcp-hangarSecurity & Safety · ★ 18

Preventing unauthorized or malicious changes to LLM tool descriptions and behavior.

Read mcp-hangar full review →
02

Side-by-Side Comparison

Field
authserver logoauthserver
mcp-hangar logomcp-hangar
Category
Security & Safety
Security & Safety
Stars
★ 81
★ 18
License
AGPL-3.0
MIT
Install Command
export AUTHPLANE_ADMIN_API_KEY="$(openssl rand -hex 32)" && export AUTHPLANE_SESSION_SECRET="$(openssl rand -hex 32)" && docker run -p 9000:9000 -p 9001:9001 -e AUTHPLANE_ADMIN_API_KEY -e AUTHPLANE_SESSION_SECRET -e AUTHPLANE_CLIENT_CREDENTIALS_ENABLED=true -e AUTHPLANE_DPOP_ENABLED=true -e AUTHPLANE_TOKEN_EXCHANGE_ENABLED=true -v authserver-data:/data authplane/authserver:latest serve
pip install mcp-hangar && mcp-hangar init -y
Updated
1w ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
Authorization Server, OAuth 2.1, Identity Management
Policy Enforcement, Admission Control, Egress Control
03

Features

authserver logoauthserver
01Spec-compliant access tokens for any MCP server in any language.
02Federation to existing OIDC-compliant Identity Providers (IdP) like Google, Okta, Azure AD.
03Agent-to-agent delegation with audit logging and act-claim chains.
04Built-in Admin UI for managing everything from a browser, embedded in the same binary.
05Production-grade storage (PostgreSQL) and observability (OpenTelemetry, Prometheus, Helm chart).
mcp-hangar logomcp-hangar
01L7 egress policy for LLM tools
02Tool-schema digest pinning to prevent unauthorized tool changes
03Auth & RBAC for secure tool access
04Attributable audit records for SIEM export
05Human-in-the-loop approvals for critical operations
04

Use Cases

authserver logoauthserver
↳Securing new or existing Model Context Protocol (MCP) servers.
↳Integrating with existing Identity Providers for centralized user management.
↳Enabling secure agent-to-agent communication and delegated access.
↳Storing and vending refresh tokens for upstream providers (e.g., GitHub, Google, Slack).
mcp-hangar logomcp-hangar
↳Preventing unauthorized or malicious changes to LLM tool descriptions and behavior.
↳Implementing granular access control and permissions for different users or tenants accessing LLM tools.
↳Maintaining an attributable audit trail of all LLM tool interactions for compliance and security monitoring.
↳Gating sensitive or high-impact LLM tool operations with a human review and approval process.
FAQ

FAQ

What is the difference between authserver and mcp-hangar?
Both authserver and mcp-hangar are in the Security & Safety category. authserver has 81 stars, while mcp-hangar has 18 stars.
Which is better, authserver or mcp-hangar?
The best choice depends on your use case. Choose authserver if Securing new or existing Model Context Protocol (MCP) servers., and mcp-hangar if Preventing unauthorized or malicious changes to LLM tool descriptions and behavior..
Is authserver free or open source?
Yes, authserver is open source on GitHub (AGPL-3.0).
Is mcp-hangar free or open source?
Yes, mcp-hangar is open source on GitHub (MIT).
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