arize-evaluator

Create, execute, and monitor LLM and code evaluators on Arize.

Updated May 5, 2026
One-click install
npx skills add https://github.com/ethan-rio/skills --skill arize-evaluator
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: arize-evaluator
Source: https://github.com/ethan-rio/skills/tree/main/skills/arize/arize-evaluator
Command: npx skills add https://github.com/ethan-rio/skills --skill arize-evaluator

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Manually setting up LLM evaluators, scoring spans or experiment runs, and configuring continuous monitoring on Arize is time-consuming and prone to configuration errors like incorrect column mappings or missing credentials. This Skill eliminates that manual overhead by guiding you through end-to-end evaluation workflows with built-in validation and error handling.

Core Features & Use Cases

  • LLM-as-Judge & Code Evaluator Management: Create, version, and update both LLM-powered template evaluators and deterministic code evaluators for tasks like hallucination detection, correctness scoring, and format validation.
  • Project & Experiment Evaluation: Run one-time backfills or continuous scoring on live project spans, or score experiment dataset runs with custom column mappings to match your data schema.
  • Use Case: For a RAG application deployed on Arize, use this Skill to automatically score retrieval relevance and answer correctness for every new user query, and backfill scores on historical traces to identify performance regressions.

Quick Start

Use the arize-evaluator skill to create a hallucination checker for your Arize project and run a backfill evaluation on the last 100 spans to validate scoring accuracy.

Frequently Asked Questions about arize-evaluator

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I automate LLM evaluation and continuous monitoring on Arize?

Automating LLM evaluation on Arize is done by creating, versioning, and executing LLM-as-judge and code evaluators to continuously score incoming project spans and backfill historical traces.

What is an LLM-as-judge evaluator and when do I need it for RAG validation?

An LLM-as-judge evaluator uses an LLM template to score tasks like hallucination detection and retrieval relevance. You need it for RAG validation to automatically assess answer correctness for user queries.

How do I backfill evaluation scores on historical Arize spans?

To backfill evaluation scores on historical Arize spans, you run one-time backfill evaluations using the Arize ax CLI, applying custom column mappings to match your specific data schema and trace history.

Can I run both deterministic code and LLM template evaluators on Arize experiment runs?

Yes, you can run both deterministic code and LLM template evaluators on Arize experiment dataset runs, enabling you to score correctness, validate formats, and track performance across project spans.

Does the Arize ax CLI support custom column mapping for continuous span scoring?

Yes, the Arize ax CLI supports custom column mapping for continuous span scoring, allowing you to align the evaluation logic with your specific data schema and prevent configuration errors.

Why does my Arize LLM evaluator configuration fail during span scoring?

Arize LLM evaluator configurations often fail during span scoring due to incorrect column mappings or missing credentials, which can be prevented by using guided end-to-end workflows with built-in validation.