Agentic AI: Build Evals That Catch Loop and Tool-Misuse Failures
Standard answer-quality evals miss agent-specific bugs; design evals that score loops, wasted tools, and abandoned subgoals.
10 min · Reviewed 2026
The premise
An agent can get the right final answer while wasting 40 tool calls and giving up on a subgoal silently; agent evals must score the trajectory, not just the result.
What AI does well here
Score tool-call efficiency and redundancy
Detect loops and dead-end retries
Check whether all subgoals were addressed
Compare runs across model versions
What AI cannot do
Replace user-perceived quality measurement
Detect issues your rubric does not name
Stand in for production monitoring
End-of-lesson check
10 questions · take it digitally for instant feedback at tendril.neural-forge.io/learn/quiz/end-agentic-evals-for-agent-loops-r8a1-creators
What is the main idea of "Agentic AI: Build Evals That Catch Loop and Tool-Misuse Failures"?
Standard answer-quality evals miss agent-specific bugs; design evals that score loops, wasted tools, and abandoned subgoals.
Use AI as the final authority for the whole decision
Avoid checking the answer once it sounds polished
Focus only on speed instead of judgment
Which concept is most central to "Agentic AI: Build Evals That Catch Loop and Tool-Misuse Failures"?
tool efficiency
trajectory eval
subgoal completion
LLM-as-judge
Which use of AI fits this topic best?
Replace user-perceived quality measurement
Let the AI decide what matters without your review
Score tool-call efficiency and redundancy
Use the answer before checking whether it fits the situation
Which limitation should you watch for in this topic?
Score tool-call efficiency and redundancy
Explain the topic in plain language
Organize a draft for human review
Replace user-perceived quality measurement
What should a careful learner remember about "Prompt: design trajectory eval"?
Use AI to draft or organize ideas about trajectory eval, then verify before acting.
Skip the context so the tool can guess faster
Treat the output as private even after sharing it online
Use the answer without checking the source
You want to use AI after this lesson. What is the safest next step?
Act immediately because the AI answer is written clearly
Use AI for drafting and comparison, but verify before publishing or relying on it.
Hide uncertainty so the final answer looks cleaner
Use private or sensitive details before checking permission
How should AI output about trajectory eval be treated?
As proof that no other source is needed
As a replacement for context, consent, or expert review
As a draft or helper output that still needs human judgment and verification
As something that becomes correct when it sounds confident
Name one way to verify an AI answer about trajectory eval.
Which action would help you apply "Agentic AI: Build Evals That Catch Loop and Tool-Misuse Failures" responsibly?
Detect issues your rubric does not name
Use the tool to avoid thinking through the tradeoff
Keep going even if the output conflicts with a trusted source
Detect loops and dead-end retries
Which choice is a bad use of AI for this lesson?
Detect issues your rubric does not name
Score tool-call efficiency and redundancy
Ask for a plain-language explanation of tool efficiency