Koskamo

jsonschema-mcp

A community MCP server that validates JSON against a JSON Schema offline, providing a clear list of every structural error. It is part of a monorepo of TypeScript MCP servers that read public data without requiring vendor API keys.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

jsonschema-mcp logo, by mrfentmenCommunity listingLocal stdioSource reviewed; not executedPublished by mrfentmen
Vendor documentation

What you can do with it

  • Validate JSON structure against a schema
  • Identify structural errors in JSON data
  • Offline JSON validation without API keys

Source and maintenance

Community listingRegistry 1.0.1
mcp-registry: io.github.mrfentmen/jsonschema-mcp@1.0.1Source repository
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@mrfentmen/jsonschema-mcp 1.0.1

npm
@mrfentmen/jsonschema-mcp package definition
{
  "version": "1.0.1",
  "transport": "stdio",
  "identifier": "@mrfentmen/jsonschema-mcp",
  "registryType": "npm"
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "jsonschema-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/jsonschema-mcp@1.0.1"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "jsonschema-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/jsonschema-mcp@1.0.1"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "jsonschema-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/jsonschema-mcp@1.0.1"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "jsonschema-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/jsonschema-mcp@1.0.1"
      ]
    }
  }
}

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