Compare Tools
Pick a category, then select 2–3 tools to compare side by side.
Category
Select 2–3 tools to compare
Auth0cloudFree up to 25k MAU
Firebase AuthcloudFree up to 50k MAU
Agent Sdk
Token Delegation
Human In The Loop
Fga
Mcp Support
Async Authorization
Pricing
Free up to 25k MAU$35/mo EssentialsCustom Enterprise
Free up to 50k MAUBlaze pay-as-you-goPhone auth: 10¢/verification
Open Source
Self-Hosted
SDK Languages
pythonjavascripttypescriptgojavacsharprubyphp
javascripttypescriptpythonjavaswiftkotlingo
Frameworks
langchainllamaindexvercel-aiopenai-agents
langchainvercel-ai
Compliance
soc2hipaagdprpci-dss
soc2gdpr
Best For
Multi-tenant SaaS, token delegation for agents, fine-grained authorization at scale
Rapid prototyping and Google-native stacks; low-friction auth for AI apps that don't need agent-specific authorization
Limitations
Vendor lock-in on cloud plan; self-hosted (Private Cloud) is enterprise-tier only; dynamic client registration for MCP requires Enterprise plan to secure against abuse
No token delegation, no FGA, no agent SDK; vendor lock-in to Google Cloud; limited authorization model
Supported Not supported Unverified