AgentIndex icon
AgentIndex
authserver logo
authserver
★ 81
vs
satgate logo
satgate
★ 11

authserver vs satgate

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.; satgate: SatGate acts as an economic firewall for AI agents, governing their API calls by enforcing scoped authority, budgets, and paid-rail context. It prevents unauthorized spending and resource invocation, integrating seamlessly with existing routing gateways and LLM providers.

01

TL;DR

authserver logo
authserverSecurity & Safety · ★ 81

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

Read authserver full review →
satgate logo
satgateSecurity & Safety · ★ 11

Controlling and limiting AI agent spending on external API services.

Read satgate full review →
02

Side-by-Side Comparison

Field
authserver logoauthserver
satgate logosatgate
Category
Security & Safety
Security & Safety
Stars
★ 81
★ 11
License
AGPL-3.0
Apache-2.0
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
curl -L https://github.com/satgate-io/satgate/releases/latest/download/satgate-darwin-arm64 -o satgate && chmod +x satgate
Updated
1w ago
1d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
Authorization Server, OAuth 2.1, Identity Management
AI Agent Governance, Economic Firewall, API Security
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).
satgate logosatgate
01Capability Tokens (Macaroons) for delegatable and caveated credentials.
02Hard budget enforcement to block agent requests when spending limits are reached.
03MCP-aware governance for granular cost attribution to specific agent tool calls.
04Default-Deny Zero Trust security model, requiring valid credentials for all routes by default.
05Lightweight Go proxy with minimal latency (<50ms overhead) for efficient governance.
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).
satgate logosatgate
↳Controlling and limiting AI agent spending on external API services.
↳Safely delegating specific, reduced permissions and budgets to sub-agents.
↳Governing access and enforcing policies for monetized API endpoints and paid-rail contexts.
↳Achieving granular cost attribution for individual tool calls made by AI agents.
↳Securing internal and external microservice endpoints with a default-deny access policy for agents.
FAQ

FAQ

What is the difference between authserver and satgate?
Both authserver and satgate are in the Security & Safety category. authserver has 81 stars, while satgate has 11 stars.
Which is better, authserver or satgate?
The best choice depends on your use case. Choose authserver if Securing new or existing Model Context Protocol (MCP) servers., and satgate if Controlling and limiting AI agent spending on external API services..
Is authserver free or open source?
Yes, authserver is open source on GitHub (AGPL-3.0).
Is satgate free or open source?
Yes, satgate is open source on GitHub (Apache-2.0).
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