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Agent skill

Sparc Methodology

by ruvnet in ruvnet/agentic-flow

SPARC development methodology for systematic test-driven development

No licenceAuto-check passedTesting & QA

Install Sparc Methodology

skills CLI
$ npx skills add ruvnet/agentic-flow --skill sparc-methodology -a claude-code

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

GitHub CLI
$ gh skill install ruvnet/agentic-flow sparc-methodology --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/ruvnet/agentic-flow.git skills-src && mkdir -p .claude/skills && cp -r skills-src/agentic-flow/.claude/skills/sparc-methodology .claude/skills/sparc-methodology && 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
sparc-methodology
GitHub stars
819
Token cost
~848 tokens
SKILL.md length
172 words
Files
1
Skills in repo
21
Repo updated
First seen
Licence
None found

At a glance

SPARC development methodology for systematic test-driven development

  • Works in 5 steps: Specification (spec) → Pseudocode (pseudo) → Architecture (arch) → …
  • Tasks that involve Test-driven development
  • SKILL.md covers Quick Commands, SPARC Phases, SPARC Modes and TDD Workflow, plus 2 more sections
  • Calls npx

What it does

Sparc Methodology is an agent skill from ruvnet/agentic-flow. SPARC development methodology for systematic test-driven development

Its SKILL.md is about 850 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Testing & QA, covering Test-driven development. The repository describes itself as: Easily switch between alternative low-cost AI models in Claude Code/Agent SDK. For those comfortable using Claude agents and commands, it lets you take what you've created and…

When your agent uses it

  • Tasks that involve Test-driven development

Example prompts

  • “/sparc-methodology”

Requirements

  • Node.js

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Specification (spec)
  2. Pseudocode (pseudo)
  3. Architecture (arch)
  4. Refinement (refine)
  5. Completion (complete)

What it can do on your machine

Read from SKILL.md and the folder at commit e993605. 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:

    • npx

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

  • Network

    No URLs in SKILL.md. Its commands use npx, 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

Sparc Methodology loads about 848 tokens when it runs. Until then it costs about 22 tokens; SKILL.md has 172 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~22
When it runs · the whole SKILL.md, loaded when a task matches
~848

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 172 words (~848 tokens).

“Systematic Test-Driven Development using SPARC (Specification, Pseudocode, Architecture, Refinement, Completion).”

— opening of SKILL.md by ruvnet
name
sparc-methodology
version
1.0.0
invocable
true
author
agentic-flow
capabilities
specification, pseudocode, architecture, refinement, completion

Read the full SKILL.md on GitHub

Files

Just SKILL.md in agentic-flow/.claude/skills/sparc-methodology of ruvnet/agentic-flow.

Open the folder on GitHubat commit e993605

Compare with similar skills

Sparc Methodology 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.

Sparc Methodology compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Sparc Methodology this skillruvnet/agentic-flow819—~848Automated safety check: PassNone
TDDpietheinstrengholt/rssmonster56430 repos~906Automated safety check: PassMIT
TDD WorkflowhellangleZ/burn-in-cceverywhere-ralph11211 repos~2.4kAutomated safety check: PassNone
TDDsanity-io/sanity6.4k20 repos~1kAutomated safety check: PassMIT
Test Driven Developmentfarm-fe/farm5.6k51 repos~2.5kAutomated safety check: PassMIT
Tapd Story PipelineTencentBlueKing/bk-bcs841—~2.6kAutomated safety check: PassCustom licence

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Categories

Questions about Sparc Methodology

What does Sparc Methodology do?

SPARC development methodology for systematic test-driven development. Sparc Methodology is an agent skill from ruvnet/agentic-flow.

When should I use Sparc Methodology?

Sparc Methodology fits situations like: tasks that involve Test-driven development.

How do I install Sparc Methodology in Claude Code?

Run `npx skills add ruvnet/agentic-flow --skill sparc-methodology -a claude-code`. Or copy the skill folder (agentic-flow/.claude/skills/sparc-methodology in ruvnet/agentic-flow) into .claude/skills/sparc-methodology in your project. Claude Code loads it when a task matches its description.

How do I install Sparc Methodology in Codex?

Run `npx skills add ruvnet/agentic-flow --skill sparc-methodology -a codex`. Or copy the skill folder (agentic-flow/.claude/skills/sparc-methodology in ruvnet/agentic-flow) into .agents/skills/sparc-methodology in your project. Codex loads it when a task matches its description.

Can I use Sparc Methodology 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 ruvnet/agentic-flow --skill sparc-methodology -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sparc-methodology, .gemini/skills/sparc-methodology, .github/skills/sparc-methodology and .opencode/skills/sparc-methodology in your project.

What does Sparc Methodology need to run?

Going by SKILL.md and its folder, Sparc Methodology needs the command-line tools its instructions call (npx). Our summary lists: Node.js.

Does Sparc Methodology access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Sparc Methodology 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 Sparc Methodology use?

No licence was found for Sparc Methodology or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Sparc Methodology use?

About 848 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Sparc Methodology?

Skills that share tags, products or a category with Sparc Methodology: TDD (pietheinstrengholt/rssmonster, 564 stars), TDD Workflow (hellangleZ/burn-in-cceverywhere-ralph, 112 stars), TDD (sanity-io/sanity, 6.4k stars) and Test Driven Development (farm-fe/farm, 5.6k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Sparc Methodology?

ruvnet (a GitHub user) maintains it in ruvnet/agentic-flow, which has 819 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on September 16, 2026.

Source: ruvnet/agentic-flow on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.