JSON Contracts MCP Server

io.github.json-contracts/json-contracts

Repository Registry

What is the JSON Contracts MCP server?

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

How to install JSON Contracts

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

JSON_CONTRACTS_DIR
Folder containing JSON contract files. Defaults to ./json-contracts.

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

{
  "mcpServers": {
    "json-contracts": {
      "command": "npx",
      "args": [
        "-y",
        "json-contracts"
      ],
      "env": {
        "JSON_CONTRACTS_DIR": "<YOUR_JSON_CONTRACTS_DIR>"
      }
    }
  }
}

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