Agent Harness

2 articles

AI Security • Aug 19, 2026

Gemini agent hooks fail open: how to block a tool call anyway

Gemini agent hooks fail open on every error path, and never fire for MCP or function tools. The deny contract, the coverage gap, and what to gate instead.

9 min read

AI Engineering • Aug 6, 2026

Run agent tool calls in parallel: 10 turns become 2 DAG levels

Run agent tool calls in parallel by swapping the loop for a DAG planner: ten round trips become two levels, plus the cap, budget and critic on top.

10 min read