Span Coding

Q: What is a Claude Code skill and how does the Span Coding skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Span Coding is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: General · Sub-category: general-misc · Last updated: 2026-07-23

Open-code Phoenix spans with PXI-owned notes, recover those notes for axial coding, and promote stable categories into structured annotations. Load this when analyzing spans to discover failure patterns before a taxonomy exists.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Open coding is the exploratory pass: inspect individual spans and write short, evidence-close notes about concrete behaviors before deciding what the categories are. Axial coding is the synthesis pass: recover those notes, group recurring patterns, name actionable categories, and promote stable categories into structured annotations.

What this skill does

Span Coding is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/span-coding/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Span Coding Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/span-coding
curl -L https://claudskills.com/skills/span-coding/SKILL.md \
  -o ~/.claude/skills/span-coding/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/span-coding/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/span-coding/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\span-coding\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Span Coding Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/span-coding/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Span Coding skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Span Coding skill?

Use Span Coding when your Claude Code task falls under the General category — specifically in the general misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Span Coding" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Span Coding skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Span Coding is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/Arize-ai/phoenix/blob/HEAD/src/phoenix/server/agents/prompts/skills/span-coding/SKILL.md
Author: Arize-ai
Website: https://arize.com/docs/phoenix

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Arize-ai. (2026). Span Coding [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/span-coding/

BibTeX

@misc{span-coding-2026,
  author    = {Arize-ai},
  title     = {Span Coding [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/span-coding/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/span-coding.svg)](https://claudskills.com/skills/span-coding/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/span-coding/#security)

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Browse all General skills → Top 100 skills

Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills. · What's New · Install guide · About · llms.txt

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