Mefisto Projections

Q: What is a Claude Code skill and how does the Mefisto Projections 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. Mefisto Projections 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: 2026-10-04

Doctrina de proyecciones Marten y de Functions de query read-only del marco (naming, recetas, read APIs, paginacion y filtros, config-test). Usar cuando se proponga o implemente una proyeccion (SingleStreamProjection/MultiStreamProjection/EventProjection), un read model, o un endpoint HTTP de lectura sobre QuerySession -- GET o QUERY/RFC 10008 (Obtener{X}/Listar{X}s), incluyendo su paginacion (keyset/cursor u offset) y sus filtros combinados.

Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Fuente unica de la doctrina read-side del marco -- MEF-ADR-0035 (estilo de codigo y superficie de consulta), MEF-ADR-0034 (worker de proyecciones y config-test), MEF-ADR-0006 (naming), MEF-ADR-0041 (forma propia de la vista, ReadModels como cuarta isla) y MEF-ADR-0042 (frontera GET vs QUERY, paginacion y filtros multiples). El planner la usa para proponer un issue tipo:projection; los subagentes read-side projection-test-writer/projection-implementer (issue #365) la precargan via skills: para generar codigo -- el par adversarial delgado que escribe tests (roja) e implementa (verde) sin…

What this skill does

Mefisto Projections 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/mefisto-projections/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Mefisto Projections 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 201,000+ 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/mefisto-projections
curl -L https://claudskills.com/skills/mefisto-projections/SKILL.md \
  -o ~/.claude/skills/mefisto-projections/SKILL.md

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

Skills live at ~/.claude/skills/mefisto-projections/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\mefisto-projections\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 Mefisto Projections Claude Code skill?

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

What does the Mefisto Projections 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 Mefisto Projections skill?

Use Mefisto Projections 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 Mefisto Projections" or describe the task and let Claude pick). Browse related skills at /category/general/.

What is a Claude Code skill and how does the Mefisto Projections 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. Mefisto Projections 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/augusto-romero-arango/eda-evsourcing-azure-harness/blob/HEAD/dist/opencode/skills/mefisto-projections/SKILL.md
License: MIT
Author: augusto-romero-arango

Cite this skill

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

APA

augusto-romero-arango. (2026). Mefisto Projections [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/mefisto-projections/

BibTeX

@misc{mefisto-projections-2026,
  author    = {augusto-romero-arango},
  title     = {Mefisto Projections [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/mefisto-projections/}
}

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/mefisto-projections.svg)](https://claudskills.com/skills/mefisto-projections/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-10-04 — 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/mefisto-projections/#security)

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

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