Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/mrjf-invalid-skill
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
Get the weekly diff
The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.
About
Use cases: testing
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions
What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
- Tools
- No tools found
- Secrets
- None asked for
- Install scripts
- None found
- Runs as
- Shell scripts
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/invalid-skill
What's inside
- Skill name
invalid-skill- Description
- Intentionally invalid banded skill for testing
- License
- MIT
- Instructions
- 5 lines in SKILL.md · view on GitHub
Before installing
- Ships executable scripts
Files (6)
- SKILL.md
- bad-ref.json · schemas/input/
- broken.json · schemas/input/
- broken · scripts/
- run.sh · scripts/resources/broken/
- run.sh · scripts/resources/no-wrapper/
SKILL.md (first lines)
# Invalid Skill This skill is missing BAND.md and has broken scripts.
From mrjf/bands, MIT.
More from mrjf/bands
- 0.535score
slack
mrjf
Send messages, manage channels, reactions, and files in Slack with declarative channel-level permissions
SkillCFreshness: C★ 8Claude Code +9 - 0.535score
github
mrjf
Interact with GitHub repositories, issues, pull requests, releases, gists, labels, and CI/CD
SkillCFreshness: C★ 8Claude Code +9 - 0.535score
elevenlabs
mrjf
ElevenLabs text-to-speech, voice management, and sound effects via REST API
SkillCFreshness: C★ 8Claude Code +9 - 0.532score
summarize
mrjf
Summarize documents using Claude
SkillCFreshness: C★ 8Claude Code +9 - 0.463score
valid-skill
mrjf
A valid banded skill for testing with two scripts
SkillDFreshness: D★ 8Claude Code +9 - 0.463score
ref-skill
mrjf
Skill with band references for testing
SkillDFreshness: D★ 8Claude Code +9 - 0.260score
example-banded
mrjf
Example banded skill demonstrating the banded skills format
SkillDFreshness: D★ 8Claude Code +9 - 0.258score
config-skill
mrjf
Test skill with band config
SkillDFreshness: D★ 8Claude Code +9
Signals
- Stars
- 8
- Forks
- 0
- Open issues
- 8
- Last commit (this folder)
- Mar 16, 2026 (7 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/mrjf/bands
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from mrjf
- 0.535score
slack
mrjf
Send messages, manage channels, reactions, and files in Slack with declarative channel-level permissions
SkillCFreshness: C★ 8Claude Code +9 - 0.535score
elevenlabs
mrjf
ElevenLabs text-to-speech, voice management, and sound effects via REST API
SkillCFreshness: C★ 8Claude Code +9 - 0.535score
github
mrjf
Interact with GitHub repositories, issues, pull requests, releases, gists, labels, and CI/CD
SkillCFreshness: C★ 8Claude Code +9 - 0.532score
summarize
mrjf
Summarize documents using Claude
SkillCFreshness: C★ 8Claude Code +9 - 0.463score
ref-skill
mrjf
Skill with band references for testing
SkillDFreshness: D★ 8Claude Code +9 - 0.463score
valid-skill
mrjf
A valid banded skill for testing with two scripts
SkillDFreshness: D★ 8Claude Code +9
Cite this page
invalid-skill. Agent Mart. https://agentmart.dev/skills/mrjf-invalid-skill (last updated 2026-10-24)