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Authentication

Authentication

How agents log in, obtain tokens, and prove identity across SaaS, APIs, MCP servers, and multi-agent workflows.

5 articles Identity, platform, and product teams modernizing authentication for agents rather than only humans and APIs.
Best Practices for Agent-to-Agent Authentication

Best Practices for Agent-to-Agent Authentication

Secure AI agent interactions with unique identities, short-lived tokens, mTLS, OAuth client credentials, and continuous monitoring for audit and compliance.

PKCE in OAuth for AI Agents: Best Practices

PKCE in OAuth for AI Agents: Best Practices

Guide to PKCE for AI agents: generate S256 verifiers, enforce PKCE server-side, use short scoped tokens, validate redirects, and monitor PKCE flows.

How to Secure AI Agent Authentication in 2025

How to Secure AI Agent Authentication in 2025

Explore essential strategies for securing AI agent authentication in 2025, focusing on unique credentials, JIT access, and compliance standards.

How to Handle Dynamic Client Registration for AI Agents That Spawn and Terminate Automatically

How to Handle Dynamic Client Registration for AI Agents That Spawn and Terminate Automatically

Learn why AI agents need device-like Dynamic Client Registration, not application-style permanent registration. Discover how Prefactor's DCR handles ephemeral agent lifecycles automatically.

Why M2M Tokens Aren’t Enough for Agent-Based Systems: Beyond Static Credentials

Why M2M Tokens Aren’t Enough for Agent-Based Systems: Beyond Static Credentials

M2M tokens aren't enough

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See how every agent performs — and make it better

Prefactor helps teams observe, evaluate, and improve their AI agents in production — across every framework and provider.