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Debug LLM apps with the Phoenix CLI v1.0.0

Use this resource to analyze LLM application traces and find where they fail

New

  • 451 downloads
  • 241 likes
  • 123 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install llm-trace-debugging-phoenix

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 uses the px command to fetch and annotate traces and spans, then structures the review: open coding, axial coding and a failure taxonomy. It also helps choose which evals to write. You get a prioritized list of your application's errors.

Mostly picked by

Updated November 2, 2026

Card for the “Debug LLM apps with the Phoenix CLI” 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: px commands, authentication and profiles
  • references/open-coding.md: open coding of traces
  • references/axial-coding.md: axial grouping of errors

Good fit for

  • Your agent fails and you do not know where to start
  • You are building an error taxonomy from traces

Not for

    Tags

    • llm
    • traces
    • evaluation
    • phoenix

    About

    You say

    “Fetch this week's failing traces and classify the kinds of failures.”

    Card for the “Debug LLM apps with the Phoenix CLI” skill

    Skill published by github 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 analyze LLM application traces and find where they fail
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/axial-coding.md14.7 KB
    • references/open-coding.md20 KB
    • SKILL.md15.9 KB

    Origin and licence

    Listed unmodified

    Author
    github
    Source
    github.com/github/awesome-copilot/tree/0fe6545b950671641b2b14b44eb56678fea6c6b4/skills/phoenix-cli
    Licence
    Apache-2.0

    Notice

    « phoenix-cli » (github, Apache-2.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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