Best YAML MCP Servers
YAML (YAML Ain't Markup Language) is a human-readable data serialization standard that can be used in conjunction with all programming languages and is often used for configuration files.
Why this server?
Parses and displays services.yaml configuration files with visual card views showing service status, changes, and deployment order in cross-service architectures.
AlicenseBqualityBmaintenanceEnables spec-driven development with task tracking, approval workflows, and real-time progress monitoring through OpenSpec CLI functionality. Includes a web dashboard for visual management of change proposals and specifications.Last updated24022823MITWhy this server?
Uses YAML for character definitions, data mod overlays, and JSON string patches; the MCP server exposes these YAML-driven workflows as tools.
AlicenseAqualityBmaintenanceDiablo II Resurrected modding toolkit — character builder, mod build/deploy pipeline, save inspector, CASC reader, and MCP server for Claude/Codex/AI integration. Linux/Steam Deck.Last updated2232MITWhy this server?
Utilizes YAML files for defining server deployment configurations and infrastructure templates.

Kastellofficial
AlicenseAqualityCmaintenanceServer security auditing (413 checks, 29 categories), production hardening, and fleet management. Supports Hetzner, DigitalOcean, Vultr, and Linode.Last updated1748051Why this server?
Provides configuration format for deployment via Smithery with included smithery.yaml file for deployment automation.
AlicenseAqualityCmaintenanceMCP server for broken link detection, monitoring, and AI-powered fix suggestions. Scans URLs or sitemaps, estimates SEO and revenue impact, and returns actionable remediation steps. Built with FastMCP 3.x.Last updated4MITWhy this server?
Provides tools for surgically editing YAML files via AST, including adding, deleting, and replacing keys and values, as well as appending to sequences.
AlicenseAqualityBmaintenanceA robust, language-agnostic Model Context Protocol (MCP) server that provides AI coding agents with the ability to edit files surgically via Abstract Syntax Trees (AST) instead of relying on token-heavy, brittle search-and-replace or diff operations.Last updated286MITWhy this server?
Allows for the ingestion of YAML data files to be mapped and integrated into the knowledge graph.
AlicenseAqualityBmaintenanceAI-native ontology engineering MCP server for OWL/RDF/SPARQL. Validate, query, diff, lint, version, and govern knowledge graphs via Oxigraph triple store.Last updated42110MITWhy this server?
Provides task management capabilities using YAML files as the data storage format, allowing creation and management of hierarchical task structures with attributes like status, dependencies, and milestones.
AlicenseBqualityCmaintenanceEnables AI assistants to manage tasks through YAML-based storage with subtask suggestions, status updates, and Mermaid Gantt chart generation. Supports hierarchical task structures with attributes like dependencies, milestones, and parallel execution.Last updated264391ISCWhy this server?
Provides tools for managing task files with YAML frontmatter, including creating, updating, and archiving tasks with structured metadata for project management workflows.
AlicenseAqualityBmaintenanceIntent-based project documentation server that automatically maps natural language queries to the right sources (plans, todos, roadmap, docs) and provides comprehensive task management with dependency tracking, backlog promotion, and archival workflows.Last updated42267MITWhy this server?
Allows for the reading and writing of YAML and YML files, supporting configuration management and data serialization.
AlicenseBqualityDmaintenanceEnables processing of Excel, Word, and PDF documents through reading, writing, and metadata extraction. It leverages a secure Pyodide WebAssembly environment to handle document parsing with support for paginated results.Last updated4341MIT