MCP For Claude Marketplace
Output Format Token Comparator

Output Format Token Comparator MCP Connector for Claude

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Analyze token efficiency, overhead, and complexity across different data serialization formats.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner
More Details Connect to Claude

This MCP server provides deterministic tools to evaluate how different data serialization formats impact token usage. Use calculate_format_metrics to compare token counts, overhead, and compression ratios between JSON, XML, YAML, Markdown, and CSV. You can also use analyze_nesting_impact to see how deep hierarchies increase costs, or estimate_conversion_cost to calculate the token delta when switching formats. It is designed to help optimize data structures for LLM context windows.

tokensserializationjsonxmlefficiency

3 tools expose this connector's capabilities to your AI agent.

analyze_nesting_impact

Measures how the depth of the data structure affects the token overhead across different formats

calculate_format_metrics

Compares the token efficiency and characteristics of multiple output formats for a single data structure

estimate_conversion_cost

Calculates the estimated token cost required to switch a data structure from a source format to a destination format

See how to talk to your AI agent using Output Format Token Comparator.

Compare the token efficiency of this object in JSON and YAML: {"user": {"id": 1, "name": "Alice", "roles": ["admin", "editor"]}}

JSON uses 24 tokens while YAML uses 16 tokens. The compression ratio is 0.66, and YAML is the most compact format.

How much extra overhead does deep nesting add to XML compared to JSON?

For a structure with 5 levels of nesting, XML incurs a significantly higher overhead due to repetitive closing tags, whereas JSON overhead grows more moderately.

What is the token cost to convert this JSON to Markdown: {"title": "Report", "content": "Hello World"}

The estimated token delta for converting this JSON to Markdown is 4 tokens.

You can use the `calculate_format_metrics` tool. Provide your data structure and include both "JSON" and "YAML" in the output formats list to see the exact token counts and the compression ratio.

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