What makes this different from JSON.parse()?

JSON.parse() rejects trailing commas, comments, single quotes, and unquoted keys. JSON5 accepts all of these and outputs strict RFC 8259 JSON.

Does it support JavaScript-style comments?

Yes. Both single-line (//) and multi-line (/* */) comments are supported and stripped from the output.

Can it handle unquoted object keys?

Yes. `{name: 'Alice'}` is valid JSON5 and will be converted to `{"name": "Alice"}` in the strict output.

JSON5 Resilient Parser MCP Connector for Claude

A+

Parse malformed JSON with trailing commas, comments, and single quotes into perfect strict JSON. Powered by JSON5 (32M+ weekly downloads).

1 tools Official Updated Jun 28, 2026 Official Vinkius Partner

More Details Connect to Claude

LLMs consistently generate JSON with trailing commas, inline comments, and single quotes. JSON.parse() breaks every time. This MCP catches it all and outputs perfect RFC 8259 JSON.

The Superpowers

Resilient: Accepts trailing commas, comments (// and /**/), single quotes, unquoted keys, hex numbers, and Infinity/NaN.
Strict Output: Always returns valid RFC 8259 JSON that any parser can consume without modification.

json5data-parsingresilient-parsingconfig-filesdata-conversion

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_ipuPbcyZFLzpHTIX4HAe9NmAw6sUUhJhrkFNUBqr/mcp

② Claude Code (terminal)

claude mcp add --transport http json5-resilient-parser https://edge.vinkius.com/vk_preview_ipuPbcyZFLzpHTIX4HAe9NmAw6sUUhJhrkFNUBqr/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "json5-resilient-parser": {
      "url": "https://edge.vinkius.com/vk_preview_ipuPbcyZFLzpHTIX4HAe9NmAw6sUUhJhrkFNUBqr/mcp"
    }
  }
}

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