Borrowing it
Nothing to install: this file belongs to Vasallo94/obsidian-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Vasallo94/obsidian-mcp-server/main/.agents/skills/mcp-developer/SKILL.mdgit clone --depth 1 https://github.com/Vasallo94/obsidian-mcp-serverWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/vasallo94/obsidian-mcp-server/mcp-developer)<a href="https://agentmods.dev/skills/vasallo94/obsidian-mcp-server/mcp-developer"><img src="https://agentmods.dev/badge/skills/vasallo94/obsidian-mcp-server/mcp-developer/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/vasallo94/obsidian-mcp-server/mcp-developer"><img src="https://agentmods.dev/badge/skills/vasallo94/obsidian-mcp-server/mcp-developer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00033 | $0.02369 |
| Opus 5.5 | $0.00013 | $0.00948 |
| Sonnet 5.5 | $0.00007 | $0.00474 |
| Haiku 4.5 | $0.00003 | $0.00237 |
Grade A, and why
MCP Developer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 336 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Server Developer
Cuándo usar esta skill
- Cuando añadas nuevas herramientas (tools) o recursos al servidor MCP.
- Cuando resuelvas bugs o mejores el rendimiento del servidor.
- Cuando necesites ejecutar tests o linters en este proyecto.
- Cuando modifiques la configuración o el sistema de logging.
Arquitectura del Proyecto
obsidian-mcp-server/
├── obsidian_mcp/
│ ├── server.py # Punto de entrada - crea FastMCP y registra módulos
│ ├── config.py # Pydantic Settings (OBSIDIAN_VAULT_PATH, LOG_LEVEL)
│ ├── tools/ # Herramientas MCP (funciones invocables)
│ │ ├── navigation.py # Leer, listar, buscar notas
│ │ ├── creation.py # Crear, editar, eliminar notas
│ │ ├── analysis.py # Estadísticas, gestión de tags
│ │ ├── graph.py # Backlinks, notas huérfanas
│ │ ├── agents.py # Cargador de skills (del vault del usuario)
│ │ ├── semantic.py # Integración RAG/búsqueda vectorial
│ │ ├── context.py # Contexto y estructura del vault
│ │ └── youtube.py # Extracción de transcripciones
│ ├── semantic/ # Módulo RAG opcional (ChromaDB)
│ │ ├── indexer.py # Generación de embeddings
│ │ ├── retriever.py # Búsqueda por similitud
│ │ └── service.py # API de alto nivel RAG
│ ├── resources/ # Recursos MCP (endpoints de solo lectura)
│ ├── prompts/ # Prompts MCP (system prompts para IA)
│ └── utils/ # Utilidades compartidas
│ ├── logging.py # Logging centralizado (a stderr)
│ ├── security.py # Validación de rutas
│ └── vault.py # Operaciones de archivos del vault
├── tests/ # Suite de tests pytest
└── docs/ # Documentación
Reglas Core (Estrictas)
Package Management
- SIEMPRE usa
uv. NUNCA uses pip. - Instalar:
uv add package - Ejecutar:
uv run tool - Dev dependencies:
uv add --dev package
Type Hints
- Requeridos al 100% en todo el código.
- Verificar con:
uv run pyright
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2mo ago First seen · 336 lines · 33 tokens per session scan A 5172fe2fcaa4
MCP Developer is a skill published in the GitHub repository Vasallo94/obsidian-mcp-server (11 stars, last pushed 5d ago), licensed MIT. It adds 33 tokens to every session and 2,369 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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