JsonMend
by jsonmend.mike-tusa.workers.dev · dev.workers.mike-tusa.jsonmend/jsonmend
Repair broken JSON from LLM output and validate it against a JSON Schema.
- Category
- AI and agents
- Connection
- Remote (HTTP)
- Tools
- 2 reported
- Status
- Online
Connect it to your AI
Claude Code
claude mcp add --transport http jsonmend https://jsonmend.mike-tusa.workers.dev/mcpClaude, ChatGPT, Cursor and other apps
Add it as a custom connector with this URL (Streamable HTTP):
https://jsonmend.mike-tusa.workers.dev/mcpThis server expects extra headers, usually an API key from its maker.
Cursor, VS Code and other apps (mcp.json)
{
"mcpServers": {
"jsonmend": {
"url": "https://jsonmend.mike-tusa.workers.dev/mcp"
}
}
}Tools it offers
2 tools, as the server itself reported during our check on Oct 31, 2026.
repair_jsonTurn broken or messy JSON text into valid JSON. Strips Markdown code fences and prose before/after the JSON, removes comments and trailing commas, converts single/curly quotes, quotes unquoted keys, maps Python None/Truevalidate_jsonCheck JSON against a JSON Schema and get every error with its JSON Pointer path. Send the JSON either as text ("input"; broken text is repaired first, and the fixes are listed) or as an already-parsed value ("data"). Opt
Questions
What is the JsonMend MCP server?
Repair broken JSON from LLM output and validate it against a JSON Schema. It is made by jsonmend.mike-tusa.workers.dev and listed in the official MCP Registry as dev.workers.mike-tusa.jsonmend/jsonmend. MCP (Model Context Protocol) is the open standard that lets AI apps like Claude, ChatGPT and Cursor use outside tools.
How do I add JsonMend to Claude?
In the Claude app or claude.ai, open Settings, then Connectors, choose "Add custom connector" and paste https://jsonmend.mike-tusa.workers.dev/mcp. In Claude Code, run: claude mcp add --transport http jsonmend https://jsonmend.mike-tusa.workers.dev/mcp
How do I add JsonMend to ChatGPT?
ChatGPT can use remote MCP servers as connectors. In ChatGPT settings, under Apps and Connectors, turn on developer mode if asked, create a new connector and paste https://jsonmend.mike-tusa.workers.dev/mcp.
How do I add JsonMend to Cursor?
Open Cursor settings, go to MCP, choose "Add new MCP server" (or edit ~/.cursor/mcp.json) and add: { "mcpServers": { "jsonmend": { "url": "https://jsonmend.mike-tusa.workers.dev/mcp" } } }
Does JsonMend work right now?
Yes. It responded when we last checked on 31 Oct 2026. We check remote MCP servers every day.
What can JsonMend do?
It gives your AI 2 tools, including repair_json, validate_json. The full list is on this page.
Is this your server? Get the badge for your README
Markdown (GitHub README)
[](https://chen.media/mcp/dev-workers-mike-tusa-jsonmend-jsonmend)HTML (switches to dark mode on its own)
<a href="https://chen.media/mcp/dev-workers-mike-tusa-jsonmend-jsonmend"><picture><source media="(prefers-color-scheme: dark)" srcset="https://chen.media/mcp/badge/dev-workers-mike-tusa-jsonmend-jsonmend.svg?theme=dark"><img src="https://chen.media/mcp/badge/dev-workers-mike-tusa-jsonmend-jsonmend.svg" alt="Listed on chen.media/mcp" height="40"></picture></a>More in AI and agents
See allBenchLeader
benchleader.comDaily LLM leaderboard from independent benchmarks: ranks, scores, prices, speed and comparisons.
AEO Visibility
advancelabs.devCheck whether AI answer engines cite your site, and for which prompts. Uses your own Perplexity key.
Amazap
amazap.comSave money on AI spend. Starter credit for eligible new accounts. Details at amazap.com/credits.
Kodza
kodza.devFree premium UI components in plain HTML, CSS and vanilla JS, for AI coding assistants.
Arrakis
goodailabs.comRent GPUs at live prices and serve any Hugging Face model, with spend caps for AI agents.
Plazmi
plazmi.ggA homemaking world for AI agents: keep a house, grow a garden, dance with friends.