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Agent skills for debugging in Claude Code

1,501 agent skills for debugging in the catalog list Claude Code as a supported host. These are the 15 that rank highest, ordered by adoption, freshness and documentation. systematic-debugging, vendure-troubleshooting and plano-observability-debugging lead the list. Claude Code reads them from .claude/skills/<name>/SKILL.md in the project, or ~/.claude/skills/<name>/ for every project. A skill is a folder with a SKILL.md file; Claude Code loads it when a task matches its description. Every listing links to its source and shows a freshness grade.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

How to install in Claude Code

npx skills add <owner>/<repo> --skill <name> -a claude-code

Where it goes: .claude/skills/<name>/SKILL.md in the project, or ~/.claude/skills/<name>/ for every project.

The host's docs describe copying a folder with a SKILL.md into a skills directory; the npx skills command is a third-party shortcut for the same thing.

Each listing page has the exact command for that listing.

Top 15 of 1,501

  1. 1
    systematic-debugging

    open-metadata

    Use when debugging a failing test, build error, or runtime issue that isn't immediately obvious.

    • Largest repository here (15,567 stars)
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 15.6KLast active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  2. 2
    vendure-troubleshooting

    vendurehq

    Diagnose a broken or misbehaving Vendure project.

    • Repository has 8.5K stars
    • Active in the last 30 days

    ★ 8.5KLast active Oct 23, 2026Claude Code, Claude apps, Codex, Cursor +6

  3. 3
    plano-observability-debugging

    katanemo

    Improve Plano tracing and debugging workflows.

    • Repository has 7.1K stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 7.1KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  4. 4
    windows-vm-test

    nubjs

    Run ad-hoc Nub tests and debugging probes in the maintainer's existing local Windows 11 ARM64 QEMU/HVF VM when its external disk and runbook are present.

    • Repository has 4.4K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 4.4KLast active Oct 19, 2026Claude Code, Claude apps, Codex, Cursor +6

  5. 5
    expo-data-fetching

    expo

    Use when implementing or debugging ANY network request, API call, or data fetching.

    • Repository has 3K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 3KLast active Oct 22, 2026Claude Code, Claude apps, Codex, Cursor +6

  6. 6
    terraform-skill

    Anton Babenko

    Use when writing, reviewing, or debugging Terraform/OpenTofu modules, tests, CI, scans, or state ops - diagnoses failure mode (identity churn, secrets, blast…

    • Repository has 2.4K stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 2.4KLast active Oct 24, 2026Claude Code, Claude apps, Codex, Cursor +6

  7. 7
    linux-vm-test

    nubjs

    Run ad-hoc Nub tests and debugging probes on real local Linux guests.

    • Repository has 4.4K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 4.4KLast active Oct 19, 2026Claude Code, Claude apps, Codex, Cursor +6

  8. 8
    fleetshift-troubleshoot-shift

    spotify

    Diagnose why a Fleetshift shift or job failed: find failed targets, pull their job logs and status, and explain the root cause and the safe next step.

    • Repository has 2.5K stars
    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 2.5KLast active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  9. 9
    systematic-debugging

    GanyuanRan

    Use when encountering a bug, test failure, or unexpected behavior, before proposing fixes

    • Repository has 1.4K stars
    • Active in the last 30 days
    • Open source (MIT)

    ★ 1.4KLast active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  10. 10
    debug

    cyrusagents

    Full debugging workflow — reproduce the bug with a focused check, perform root cause analysis, then implement a minimal fix.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 867Last active Sep 30, 2026Claude Code, Claude apps, Codex, Cursor +6

  11. 11
    create-issue

    markuplint

    Investigate a problem to its root cause and file it as a GitHub Issue with the right labels and an As is / To be / Why / How body backed by primary sources.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 629Last active Oct 21, 2026Claude Code, Claude apps, Codex, Cursor +6

  12. 12
    postgres

    planetscale

    PostgreSQL best practices, query optimization, connection troubleshooting, and performance improvement.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 400Last active Oct 23, 2026Claude Code, Claude apps, Codex, Cursor +6

  13. 13
    vitess

    planetscale

    Vitess best practices, query optimization, and connection troubleshooting for PlanetScale Vitess databases.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 400Last active Oct 23, 2026Claude Code, Claude apps, Codex, Cursor +6

  14. 14
    cypress-quick-start

    dekart-xyz

    Use this skill when running, debugging, reproducing, or validating Cypress E2E tests in this repo, including the required ELECTRON_RUN_AS_NODE override.

    • Active in the last 30 days
    • Open source (AGPL-3.0)

    ★ 436Last active Oct 6, 2026Claude Code, Claude apps, Codex, Cursor +6

  15. 15
    deepstream-sop

    Wind Yuan <windy@nvidia.com>

    Use this skill when building, deploying, evaluating, debugging, or measuring latency for the DeepStream SOP Inference Microservice — a GPU-accelerated FastAPI…

    • Repository has 3.7K stars
    • Open source (CC-BY-4.0 AND Apache-2.0)
    • Ships helper scripts

    ★ 3.7KLast active Sep 4, 2026Claude Code, Claude apps, Codex, Cursor +6

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