MCP For Claude Marketplace
JSON Schema Validator and Flattener

JSON Schema Validator and Flattener MCP Connector for Claude

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Strictly validate JSON against schemas and flatten nested structures using dot notation.

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

The JSON Schema Validator and Flattener MCP server provides deterministic parsing for high-stakes data environments. It allows AI agents to verify if a JSON string adheres to specific structural rules using validate_json_against_schema. Additionally, it can transform complex, multi-layered objects into simplified dot-notation maps via flatten_json_structure, making deeply nested data easy to process. For quick reviews, use summarize_schema_constraints to extract mandatory keys and regex patterns directly from a schema.

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

flatten_json_structure

Returns a flattened map where keys are dot-notation paths. Transforms a complex, multi-layered JSON object into a single-level map using dot-notation for easy indexing

summarize_schema_constraints

Returns lists of mandatory keys and regex patterns found in the schema. Extracts and highlights the most critical structural requirements from a schema for quick human review

validate_json_against_schema

Returns validation status, error count, and specific errors. Determines if a provided JSON string strictly adheres to the rules defined in a given JSON schema

See how to talk to your AI agent using JSON Schema Validator and Flattener.

Check if this JSON is valid against the schema: {"name": "John"} with schema {"required": ["name"]}

The JSON is valid. The `validate_json_against_schema` tool confirmed that the required 'name' field is present.

Flatten this JSON: {"a": {"b": 1}}

{ "a.b": 1 }

What are the mandatory keys in this schema: {"required": ["id", "type"]}

The mandatory keys are `id` and `type`.

The `validate_json_against_schema` tool performs a strict, rule-based check. It verifies that all required properties are present and that every value matches the defined types and regex patterns without any heuristic guessing.

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