Tag: a2a

All the articles with the tag "a2a".

• Authorization in a Shifting Maze

  13 Nov, 2025

  Why authorization tooling is straining in the AI era: OPA policies that grow slow and unexplainable past a few dozen rules, ReBAC systems like SpiceDB that trade flexibility for a queryable graph, and AI agents that sit inside the perimeter with no gateway in the loop, pushing us toward dynamic, function-level, context-aware authorization through protocols like MCP and A2A.