Agent skill

Test Scope

by GlitterKill in GlitterKill/sdl-mcp

Determine which test suites are affected by recent code changes and run only the relevant ones.

Custom licenceAuto-check passedTesting & QA

Install Test Scope

skills CLI
$ npx skills add GlitterKill/sdl-mcp --skill test-scope -a claude-code

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

GitHub CLI
$ gh skill install GlitterKill/sdl-mcp test-scope --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/GlitterKill/sdl-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/test-scope .claude/skills/test-scope && 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
test-scope
GitHub stars
490
Token cost
~586 tokens
SKILL.md length
224 words
Files
1
Skills in repo
2
Repo updated
First seen
Licence
Custom licence

At a glance

Determine which test suites are affected by recent code changes and run only the relevant ones.

  • Works in 6 steps: Detect changed files → Map changes to test suites using the… → Always run typecheck if any .ts file in… → …
  • Tasks that involve Test generation
  • SKILL.md covers Test Suite Map, Steps and Rules
  • Calls npm, git and node

What it does

Test Scope is an agent skill from GlitterKill/sdl-mcp. Determine which test suites are affected by recent code changes and run only the relevant ones. Avoids running the full test matrix when only specific areas changed.

Its SKILL.md is about 590 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 generation and Context engineering. It works with Model Context Protocol and npm. The repository describes itself as: Symbol Delta Ledger (SDL-MCP) is a policy-centered context budget layer for coding agents: Symbol-graph intelligence combined with precision tools. It turns sprawling codebases…

When your agent uses it

  • Tasks that involve Test generation
  • Tasks that involve Context engineering

Example prompts

  • “/test-scope”

Workflow steps

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

  1. Detect changed files
  2. Map changes to test suites using the table above. A single change can trigger multiple suites.
  3. Always run typecheck if any .ts file in src/ changed.
  4. Report the plan before running
  5. Execute the affected suites sequentially. Use sdl.workflow with runtimeExecute if SDL-MCP is running, otherwise use Bash directly.
  6. Report results with pass/fail status for each suite.

What it can do on your machine

Read from SKILL.md and the folder at commit 383bbda. 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:

    • npm
    • git
    • node

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

  • Network

    No URLs in SKILL.md. Its commands use npm and git, 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

Test Scope loads about 586 tokens when it runs. Until then it costs about 44 tokens; SKILL.md has 224 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
~586

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 224 words (~586 tokens).

“Analyze recent code changes to determine which test suites need to run, then execute only those.”

— opening of SKILL.md by GlitterKill, Custom licence
name
test-scope
disable-model-invocation
true

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/test-scope of GlitterKill/sdl-mcp.

Open the folder on GitHubat commit 383bbda

Compare with similar skills

Test Scope 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.

Test Scope compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Test Scope this skillGlitterKill/sdl-mcp490—~586Automated safety check: PassCustom licence
Qwen Code E2E TestingQwenLM/qwen-code28k—~2.1kAutomated safety check: PassApache-2.0
Chatgpt App Submissionnteract/semiotic2.7k—~2.8kAutomated safety check: PassApache-2.0
Lsp Generateblackwell-systems/agent-lsp157—~1.4kAutomated safety check: PassMIT
Opik Verifycomet-ml/opik-mcp219—~2.8kAutomated safety check: NotesApache-2.0
Opik Testcomet-ml/opik-mcp219—~2.8kAutomated safety check: NotesApache-2.0

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Questions about Test Scope

What does Test Scope do?

Determine which test suites are affected by recent code changes and run only the relevant ones. Test Scope is an agent skill from GlitterKill/sdl-mcp. Determine which test suites are affected by recent code changes and run only the relevant ones.

When should I use Test Scope?

Test Scope fits situations like: tasks that involve Test generation; tasks that involve Context engineering.

How do I install Test Scope in Claude Code?

Run `npx skills add GlitterKill/sdl-mcp --skill test-scope -a claude-code`. Or copy the skill folder (.agents/skills/test-scope in GlitterKill/sdl-mcp) into .claude/skills/test-scope in your project. Claude Code loads it when a task matches its description.

How do I install Test Scope in Codex?

Run `npx skills add GlitterKill/sdl-mcp --skill test-scope -a codex`. Or copy the skill folder (.agents/skills/test-scope in GlitterKill/sdl-mcp) into .agents/skills/test-scope in your project. Codex loads it when a task matches its description.

Can I use Test Scope 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 GlitterKill/sdl-mcp --skill test-scope -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/test-scope, .gemini/skills/test-scope, .github/skills/test-scope and .opencode/skills/test-scope in your project.

What does Test Scope need to run?

Going by SKILL.md and its folder, Test Scope needs the command-line tools its instructions call (npm, git and node).

Does Test Scope access the network?

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

Is Test Scope 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 Test Scope use?

Test Scope 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 Test Scope use?

About 586 tokens (SKILL.md is roughly 2.3k 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 Test Scope?

Skills that share tags, products or a category with Test Scope: Qwen Code E2E Testing (QwenLM/qwen-code, 28k stars), Chatgpt App Submission (nteract/semiotic, 2.7k stars), Lsp Generate (blackwell-systems/agent-lsp, 157 stars) and Opik Verify (comet-ml/opik-mcp, 219 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Test Scope?

GlitterKill (a GitHub user) maintains it in GlitterKill/sdl-mcp, which has 490 GitHub stars. The repository holds 2 skills in this directory. The repository was last updated on September 21, 2026.

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