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Agent skill

Change Spf Behavior

by videojs in videojs/video.js

Change SPF playback-engine behaviors. An agent skill from videojs/video.js.

Custom licenceAuto-check passedDevelopment

Install Change Spf Behavior

skills CLI
$ npx skills add videojs/video.js --skill change-spf-behavior -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install videojs/video.js change-spf-behavior --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/videojs/video.js.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/change-spf-behavior .claude/skills/change-spf-behavior && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
change-spf-behavior
GitHub stars
40k
Token cost
~451 tokens
SKILL.md length
197 words
Files
5 (incl. references)
Skills in repo
38
Repo updated
First seen
Licence
Custom licence

At a glance

Change SPF playback-engine behaviors. An agent skill from videojs/video.js.

  • Works in 5 steps: State the current purpose, intended… → Map inputs, writes, lifecycle gates,… → Choose the smallest destination shape… → …
  • Merging responsibilities
  • Calls pnpm
  • Tasks that involve Refactoring

What it does

Change Spf Behavior is an agent skill from videojs/video.js. Change SPF playback-engine behaviors. Use when updating, refactoring, splitting, or merging responsibilities, signals, lifecycle, cleanup, or composition.

Its SKILL.md is about 450 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `references/merge.md`, `references/refactor.md` and `references/split.md`).

It sits in Development, covering Refactoring. The repository describes itself as: Video.js v10 - open source media player framework for HTML and React.

When your agent uses it

  • Merging responsibilities
  • Tasks that involve Refactoring

Example prompts

  • “/change-spf-behavior”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. State the current purpose, intended delta, and observable business rules.
  2. Map inputs, writes, lifecycle gates, cleanup, ordering, and source-reset rules.
  3. Choose the smallest destination shape that preserves those constraints.
  4. Pin observable behavior with tests before changing implementation.
  5. Re-read the final behavior without the diff and verify ownership, cleanup, composition, naming, and coverage.

What it can do on your machine

Read from SKILL.md and the folder at commit 74cf8cd. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • pnpm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Change Spf Behavior loads about 451 tokens when it runs, and up to ~16k if it reads all its reference files. Until then it costs about 44 tokens; SKILL.md has 197 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~44
When it runs · the whole SKILL.md, loaded when a task matches
~451
With references · SKILL.md plus every file in references/, read only if the agent opens them
~16k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 197 words (~451 tokens).

“Treat code and tests as implementation truth. Read the behavior, composition site, state/context slots, helpers, and tests, then load only the relevant file from internal/design/spf/conventions/.”

— opening of SKILL.md by videojs, Custom licence
name
change-spf-behavior

Read the full SKILL.md on GitHub

Files

SKILL.md and 4 other files (references) in .agents/skills/change-spf-behavior of videojs/video.js.

  • SKILL.md
  • references/merge.md
  • references/refactor.md
  • references/split.md
  • references/update.md

Open the folder on GitHubat commit 74cf8cd

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders. This page covers the copy in videojs/video.js, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Change Spf Behavior next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Change Spf Behavior compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Change Spf Behavior this skillvideojs/video.js40k—~451Automated safety check: PassCustom licence
Guidelinesakash-network/node1.1k22 repos~577Automated safety check: PassMIT
Component Refactoringlangflow-ai/langflow156k—~3.5kAutomated safety check: PassMIT
Migrate Core Code to Submodulestinyhumansai/openhuman42k—~2.6kAutomated safety check: PassGPL-3.0
Systematic Code Refactoringluongnv89/claude-howto42k—~3kAutomated safety check: PassMIT
Codexskills-directory/skill-codex1.5k3 repos~1.8kAutomated safety check: PassMIT

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More from videojs/video.js

All 38 skills in this repo

  • Commit PR

    videojs/video.js

    Commit, push, and create or update a Video.js pull request. An agent skill from videojs/video.js.

    40k GitHub stars~445 tokensUpdated today
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  • Maintain Tests

    videojs/video.js

    Gate and audit test value. An agent skill from videojs/video.js.

    40k GitHub stars~2.2k tokensUpdated today
    Auto-check passed

  • Write API Reference

    videojs/video.js

    Write generated Video.js API reference pages. An agent skill from videojs/video.js.

    40k GitHub stars~804 tokensUpdated today
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  • Write Docs

    videojs/video.js

    Write Video.js guides, concepts, READMEs, and JSDoc. An agent skill from videojs/video.js.

    40k GitHub stars~741 tokensUpdated today
    Auto-check passed

  • Write Locale Translations

    videojs/video.js

    Translate or audit the values in a Video.js locale pack. An agent skill from videojs/video.js.

    40k GitHub stars~723 tokensUpdated today
    Auto-check passed

  • Create HTML Component

    videojs/video.js

    Create or change Video.js custom-element UI components. An agent skill from videojs/video.js.

    40k GitHub stars~729 tokensUpdated today
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Categories

Questions about Change Spf Behavior

What does Change Spf Behavior do?

Change SPF playback-engine behaviors. An agent skill from videojs/video.js. js. Change SPF playback-engine behaviors.

When should I use Change Spf Behavior?

Change Spf Behavior fits situations like: merging responsibilities; tasks that involve Refactoring.

How do I install Change Spf Behavior in Claude Code?

Run `npx skills add videojs/video.js --skill change-spf-behavior -a claude-code`. Or copy the skill folder (.agents/skills/change-spf-behavior in videojs/video.js) into .claude/skills/change-spf-behavior in your project. Claude Code loads it when a task matches its description.

How do I install Change Spf Behavior in Codex?

Run `npx skills add videojs/video.js --skill change-spf-behavior -a codex`. Or copy the skill folder (.agents/skills/change-spf-behavior in videojs/video.js) into .agents/skills/change-spf-behavior in your project. Codex loads it when a task matches its description.

Can I use Change Spf Behavior in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add videojs/video.js --skill change-spf-behavior -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/change-spf-behavior, .gemini/skills/change-spf-behavior, .github/skills/change-spf-behavior and .opencode/skills/change-spf-behavior in your project.

What does Change Spf Behavior need to run?

Going by SKILL.md and its folder, Change Spf Behavior needs the command-line tools its instructions call (pnpm).

Does Change Spf Behavior access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Change Spf Behavior safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Change Spf Behavior use?

Change Spf Behavior has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Change Spf Behavior use?

About 451 tokens (SKILL.md is roughly 1.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 16k tokens, read only when the agent opens those files.

What are the alternatives to Change Spf Behavior?

Skills that share tags, products or a category with Change Spf Behavior: Guidelines (akash-network/node, 1.1k stars), Component Refactoring (langflow-ai/langflow, 156k stars), Migrate Core Code to Submodules (tinyhumansai/openhuman, 42k stars) and Systematic Code Refactoring (luongnv89/claude-howto, 42k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Change Spf Behavior?

videojs (a GitHub organization) maintains it in videojs/video.js, which has 39,909 GitHub stars. The repository holds 38 skills in this directory. The repository was last updated on October 8, 2026.

Source: videojs/video.js on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.