verification-loops
Verification Loops
Part of Agent Skills™ by googleadsagent.ai™
Description
Verification Loops are systematic evaluation pipelines that validate agent outputs at every stage of execution. The fundamental challenge of autonomous agents is trust — how do you know the agent did the right thing? Verification Loops solve this by embedding checkpoint evaluations, continuous assertions, and multi-stage review gates throughout the agent's execution pipeline. This skill draws from the evaluation methodology used in production at googleadsagent.ai™, where Buddy™ verifies every Google Ads recommendation against historical data, budget constraints, and domain rules before surfacing it to users.
The distinction between checkpoint and continuous verification is critical. Checkpoint verification evaluates outputs at defined stage boundaries (pre-commit, post-analysis, before-deploy). Continuous verification runs assertions in real-time during generation, catching drift and hallucination before they propagate. Both approaches are complemented by pass@k metrics — generating multiple candidate outputs and selecting the best one based on grader consensus.
Production verification systems employ typed graders: deterministic graders for schema and constraint validation, LLM-as-judge graders for semantic quality assessment, and human-in-the-loop graders for high-stakes decisions. The combination creates a layered verification net that catches errors at the earliest and cheapest point in the pipeline.