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Security

A collection of 2 issues

Agent-to-Agent Authorization: What A2A Actually Guarantees (and What It Quietly Hands Back to You)

AAIF just gave MCP and A2A the same governance home. That's a coordination story, not a security fix. Here's what A2A's spec actually guarantees about agent-to-agent authorization, and the three holes you still have to close yourself.

Agent Guardrails and Loop Budgets: How to Keep Agents From Ruining Your Week

Part 12 of the AI Engineer Series. An agent without budgets is a bug waiting to be found in production. The five budgets every run needs, tool-use safety principles, prompt injection defenses, and the OWASP LLM Top 10 items that actually matter for agents.