# Json Visualizer — MCP tool `findutils:json_visualizer`

Return a text tree outline, structure statistics, and JSONPath list for a JSON document. Stats count objects, arrays, strings, numbers, booleans, nulls, total keys, and max depth; paths are emitted as $.a.b[0] expressions for every object or array node.

- Category: data
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/json-visualizer/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/mcp/json-visualizer/
- Same tool on the other surface: https://findutils.com/api/json-visualizer/

## Connect

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Claude Desktop (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}
```

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "json_visualizer",
      "arguments": {
        "json": "{\"user\":{\"id\":1,\"roles\":[\"admin\"]},\"ok\":true}"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `json` | string | yes | JSON document to analyze. |
| `max_paths` | integer | no | Maximum number of JSONPath entries to return (1-5000). Default: 500. Default: `500`. |
| `max_depth` | integer | no | Maximum nesting depth shown in the outline (0-50). Default: 6. Default: `6`. |

Example arguments (verified):

```json
{
  "json": "{\"user\":{\"id\":1,\"roles\":[\"admin\"]},\"ok\":true}"
}
```

Decoded `json` argument (readability only — send it as a string):

```json
{
  "user": {
    "id": 1,
    "roles": [
      "admin"
    ]
  },
  "ok": true
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/json-visualizer/execute \
  -H "Content-Type: application/json" \
  -d '{
    "json": "{\"user\":{\"id\":1,\"roles\":[\"admin\"]},\"ok\":true}"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/json-visualizer
```

Full REST reference: https://findutils.com/api/json-visualizer/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt