FixMyJSON MCP Server

io.github.tonbifun/fixmyjsonv0.4.0

Repair broken LLM JSON and check it against a JSON Schema. Flags cut-off output. Free trial.

remoteofficial registry

context tax

pending

security

pending

cold start

hosted

freshness

Active4d ago

Our reading of FixMyJSON, from the data

FixMyJSON is a ai & llm tools MCP server, listed in the official MCP Registry.

We haven't measured its tool list yet, so its token cost is unknown.

Maintenance is active: the last public signal was 4 days ago (2026-10-15). For comparison, 59% of ai & llm tools servers are active or maintained.

It runs as a hosted endpoint, so there is nothing to install.

Install FixMyJSON MCP server

claude mcp add --transport http fixmyjson https://fixmyjson-api.onrender.com/mcp

{
  "mcpServers": {
    "fixmyjson": {
      "url": "https://fixmyjson-api.onrender.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "fixmyjson": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://fixmyjson-api.onrender.com/mcp"
      ]
    }
  }
}

Or add it as a custom connector under Settings → Connectors. The config above bridges via mcp-remote.

{
  "servers": {
    "fixmyjson": {
      "type": "http",
      "url": "https://fixmyjson-api.onrender.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "fixmyjson": {
      "serverUrl": "https://fixmyjson-api.onrender.com/mcp"
    }
  }
}

Remote endpoints

streamable-httphttps://fixmyjson-api.onrender.com/mcp

Freshness

Active — last maintenance signal 4d ago. The newest of the signals below sets the band.

Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-15 · 4d ago · official registry · v0.4.0

How it compares in AI & LLM Tools

Against the most-starred ai & llm tools servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
FixMyJSON (this)	—	—	not measured	Active	hosted
Memory	91,356	—	not measured	Active	local
Claude Flow	76,638	—	not measured	Active	local
Next AI Draw.io	36,318	—	not measured	Active	local
Serena Agent	30,371	—	not measured	Active	local
Trycua	30,160	—	not measured	Active	—

All ai & llm tools MCP servers

FAQ

›How do I install the FixMyJSON MCP server in Claude Code?

Run: claude mcp add --transport http fixmyjson https://fixmyjson-api.onrender.com/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does FixMyJSON require an API key?

No required environment variables are declared in its published metadata.

›Can I use FixMyJSON as a remote (hosted) MCP server?

Yes. It is a hosted MCP server; connect to its URL with any client that supports remote MCP.

›Is FixMyJSON in the official MCP registry?

Yes, as io.github.tonbifun/fixmyjson.

Sources and method

Official MCP Registry entry: updated 2026-10-15
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.