# MCP server for AI agents

An agent cannot drive a browser interface. The MCP server exposes the same engine as callable tools, so an assistant can format, validate and type a document as a step in its own work.

## Endpoint

```text
https://jsonparse.online/mcp
```

Streamable HTTP transport, stateless, no authentication. Every request is self-contained, so there is no session to keep alive and no state to lose between calls.

## Connecting

### Claude Code

```bash
claude mcp add --transport http jsonparse https://jsonparse.online/mcp
```

### Any client with a JSON config

```json
{
  "mcpServers": {
    "jsonparse": {
      "type": "http",
      "url": "https://jsonparse.online/mcp"
    }
  }
}
```

## Tools

| Tool | Input | Returns |
| --- | --- | --- |
| `format_json` | `json`, `mode`, `indent` | Beautified or minified text. |
| `validate_json` | `json` | Valid, or the first error with line, column and offset. |
| `json_to_typescript` | `json`, plus the generator options | TypeScript interfaces or type aliases. |
| `json_to_schema` | `json`, plus the schema options | A JSON Schema document. |

## What it is good for

- Turning a captured API response into types without the agent hand-writing them and getting the optional fields wrong.
- Locating the syntax error in a file an agent generated, precisely, instead of guessing from a parser message.
- Producing a schema from a sample as a step in a larger task.

> The same boundary as the HTTP API applies: documents sent to the MCP server reach the server. Documents opened in [the viewer](/) never do.

## Frequently asked questions

### Does the MCP server need an API key?

No. It is open and rate limited by address, the same as the HTTP API.

### Which MCP clients work with it?

Any client supporting the Streamable HTTP transport, which includes Claude Code, the Claude desktop app via a remote server entry, and the common agent frameworks.

### Can I run it myself?

Yes. It is part of the same MIT-licensed repository and deploys as a single serverless function.

---

Source: https://jsonparse.online/docs/mcp
Last updated: 2026-09-14
JSONParse — Read, search and type huge JSON in your browser