MCP For Claude Marketplace
JSON Schema Validator

JSON Schema Validator MCP Connector for Claude

D

Prevent malformed JSON hallucination. Validates large LLM-generated JSON objects strictly against JSON Schema standards before sending to the client.

1 tools Official Updated Jun 28, 2026 Official Vinkius Partner
More Details Connect to Claude

Validating JSON against strict OpenAPI schemas is a mathematical task, not a probabilistic one. This engine uses Ajv for zero-hallucination validation.

json-validationschema-enforcementdata-integrityapi-contracttype-checking

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

validate_json_schema

Pass both as JSON strings. The engine returns whether the data is valid and lists all specific validation errors found. Validates a JSON string optionally against a JSON Schema

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

Validate this deeply nested JSON payload against our Draft-07 OpenAPI customer schema.

✅ **Validation Status:** Valid. All 34 fields comply with the expected type and constraint definitions.

Check if this user payload is missing any required properties according to the strict schema.

❌ **Error Detected:** `Missing required property 'billingAddress.zipCode' at root.user`

Ensure all strings in this array match the schema's maxLength of 50 characters.

❌ **Validation Failed:** Item at index 4 (`companyName`) exceeds 50 characters.

Yes, it perfectly implements JSON Schema Draft-07.

Related Connectors

PE

ProUni Eligibility Calculator MCP

4 tools Official

Instantly calculate scholarship eligibility (Full or Partial) for ProUni by inputting family income, household size, and ENEM scores.

A+ View details →
DI

Discogs MCP

13 tools Official

Explore the world's largest music database — search artists, releases, labels, and marketplace listings via AI.

A+ View details →
CL

Clearstory MCP

8 tools Official

Manage construction change orders and T&M tags via Clearstory — track projects, monitor CORs, and manage project rates directly from any AI agent.

A+ View details →
WU

Wuro MCP

12 tools Official

Manage your business billing, product catalog, and contacts with Wuro.fr through AI.

A+ View details →