← Use cases · Building agents
AI agents for finding where a multi-agent run went wrong
Short answer: CrewAI 1.15.28 adds a crewai eval command that reports where a stopped model broke. LangGraph is the alternative when you want every state transition explicit.
Tools for this job
| # | Tool | Why for this job | AgentPick Score | Link |
|---|---|---|---|---|
| #1 |  CrewAI | crewai eval reports where a stopped model broke (1.15.28) | 92/100 | Official source ↗ |
| #2 |  LangGraph | Explicit state graph makes failures traceable | 90/100 | Official source ↗ |
Ordered by AgentPick Score. Links may become affiliate links; they never change order. Disclosure.
How to do it
- Reproduce the failing run with a fixed input.
- Run the eval or trace tool on it.
- Fix the single step that broke.
- Add that input as a regression test.
Starter prompt
This crew run fails on input [x]. Run crewai eval, tell me which agent and step broke and why, and propose the smallest fix.
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