YAML ↔ JSON Converter MCP Server

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Convert between YAML and JSON formats. Supports YAML-to-JSON, JSON-to-YAML, and YAML validation. Handles multi-document YAML, nested structures, anchors, and aliases. Pure computation — no external calls.

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Managed

2 tools

Agent guide included

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AI Skill
SKILL.md

Domain knowledge for YAML ↔ JSON Converter — workflow patterns, data models, and gotchas for your AI agent.

YAML ↔ JSON Converter

Bidirectional conversion between YAML and JSON. Handles complex YAML features: multi-document files, anchors/aliases, flow vs block style, nested mappings and sequences.

Capabilities

YAML → JSON: Parse YAML (single or multi-document) and output formatted JSON.
JSON → YAML: Parse JSON and output clean YAML with configurable indentation.
YAML validation: Check if a YAML string is syntactically valid without converting.

Gotchas

Multi-document YAML: Files with --- separators produce a JSON array (one element per document).
YAML tags and custom types: Only standard YAML types are supported (safe_load). Custom tags raise validation errors.
Large inputs: Inputs over 1MB may be slow. The tool enforces a 5MB hard limit.

Tools in this Server (2)

YAML To JSON Convert

Convert between YAML and JSON formats. Supports multi-document YAML (separated by ---), nested structures, anchors, and aliases. Returns the converted...

YAML To JSON Validate

Validate whether a YAML string is syntactically correct. Returns the number of documents found and any parse errors.

Frequently Asked Questions

What is the YAML ↔ JSON Converter MCP server?

How do I connect YAML ↔ JSON Converter to my AI agent?

Add the MCPBundles server URL to your MCP client configuration (Claude Desktop, Cursor, VS Code, etc.). The URL format is: https://mcp.mcpbundles.com/bundle/yaml-to-json. Authentication is handled automatically.

How many tools does YAML ↔ JSON Converter provide?

YAML ↔ JSON Converter provides 2 tools that can be called by AI agents, along with a SKILL.md that gives your AI agent domain knowledge about when and how to use them.

What authentication does YAML ↔ JSON Converter require?

YAML ↔ JSON Converter uses open data APIs — no authentication required.

Setup Instructions

Connect YAML ↔ JSON Converter to any MCP client in minutes

MCP URL

https://mcp.mcpbundles.com/bundle/yaml-to-json

Claude.ai Cursor VS Code VS Code Insiders Goose LM Studio Cherry Studio ChatGPT

One-click install:

Install on Claude.ai Install for organization (admins)

The link prefills the Add custom connector dialog — you still review the values and click Add, then Connect to complete OAuth.

Or add manually

Open claude.ai → Settings → Connectors.
Click the + button and choose Add custom connector.
Set Name to YAML ↔ JSON Converter and paste the MCP URL into Remote MCP server URL.
Click Add. YAML ↔ JSON Converter will appear under Not connected — select it and click Connect to complete OAuth.