Use LLM JSON Repair with your AI.
Connect your account once and let the AI you already use work with it, without building another integration. Fixes malformed, truncated, or dirty JSON strings produced by LLMs.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.
Complete set · 3 capabilities
The complete LLM JSON Repair capability set.
These are the exact actions your AI can choose when you ask it to work with LLM JSON Repair.
01-03
3 capabilities in this set.
Part of 3 available through LLM JSON Repair.
- 01
Extract JSON from text
- 02
Repair JSON string
- 03
Validate JSON integrity
Observed, not estimated
736ms average. Fast in production.
LLM JSON Repair is checked daily against the live service.
- Fastest day
- 638ms
- Slowest day
- 880ms
- 14-day trend
- Slowing+13%
Connect your client
One URL. Every client.
Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.
Preview access · not provider authentication
The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of LLM JSON Repair, so you can see the experience inside your AI.
It does not authenticate your account with LLM JSON Repair. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
LLM JSON Repair Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_ZzkK2sMb63roNsDq7PgNLGQ6BP95NpuKBwpjhljI/mcpClaude Desktop
Follow the steps below to connect in seconds.
- 1In Claude Desktop, open Settings → Connectors.
- 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
- 3Click Add and start a new chat — LLM JSON Repair capabilities are ready to use.
{
"mcpServers": {
"llm-json-repair-utility-mcp": {
"url": "https://edge.vinkius.com/vk_preview_ZzkK2sMb63roNsDq7PgNLGQ6BP95NpuKBwpjhljI/mcp"
}
}
}
Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline
Step-by-step instructions for each client are in the guide. How to connect
FAQ
Questions LLM JSON Repair owners ask.
- 01
How does this differ from using an LLM to fix JSON?
Unlike probabilistic LLMs, this server uses a deterministic state machine. This means it only fixes structural issues like missing brackets or trailing commas without inventing or changing the actual data content.
- 02
Can I extract JSON from a long chat response?
Yes, you can use the extract_json_from_text capability to locate and isolate the JSON object or array within a larger block of conversational text.
- 03
What happens if the JSON is truncated due to token limits?
The repair_json_string capability tracks the nesting depth of all open braces and brackets and automatically appends the necessary closing characters to restore structural integrity.
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