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Add a built-in LLM evaluator to Phoenix v1.0.0

Use this resource to add a built-in classification evaluator to the Phoenix libraries

New

  • 452 downloads
  • 246 likes
  • 158 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install builtin-llm-evaluator-creation

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent gathers requirements, writes the reference YAML configuration, compiles the prompts, creates the Python and TypeScript evaluators, then writes the benchmark. It can also promote the evaluator to the dataset evaluators.

Mostly picked by

Updated November 2, 2026

Card for the “Add a built-in LLM evaluator to Phoenix” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
Apache-2.0

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What you get

  • SKILL.md: linear pipeline from YAML configuration to benchmark
  • Tips for writing prompts and the key decision points

Good fit for

  • A kind of check keeps coming up across your Phoenix projects and should ship built in
  • You want to propose a ready-to-use evaluator in the Phoenix repo

Not for

    Tags

    • evaluator
    • benchmark
    • phoenix
    • classification

    About

    You say

    “Add a built-in evaluator that labels an answer as on-topic or off-topic.”

    Card for the “Add a built-in LLM evaluator to Phoenix” skill

    Skill published by arize-ai under the Apache-2.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to add a built-in classification evaluator to the Phoenix libraries
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE3.7 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md13.4 KB

    Origin and licence

    Listed unmodified

    Author
    arize-ai
    Source
    github.com/arize-ai/phoenix/tree/2196d813a80586c7bd3a3b91a6092d6a3fabb10c/.agents/skills/phoenix-evals-new-metric
    Licence
    Apache-2.0

    Notice

    « phoenix-evals-new-metric » (arize-ai, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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