How do I install JSON Contracts?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

Is JSON Contracts official?

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 26 (Limited). The formula is published on the methodology page.

MCPpedia

JSON Contracts MCP Server | MCPpedia

JSON Contracts MCP Server

Name: JSON Contracts MCP Server
Author: json-contracts

JSON contract registry and validator for structured LLM and agent outputs.

Tools Versions Alternatives

Registryjson-contracts

26Limited

Install

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "json-contracts-json-contracts": {
      "command": "npx",
      "args": [
        "-y",
        "json-contracts@0.1.2"
      ],
      "env": {
        "JSON_CONTRACTS_DIR": ""
      }
    }
  }
}

Install guide

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JSON Contracts MCP Server

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