JSON Repair MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 41 installs a week from npm.
Repairs malformed JSON from LLM output, validated against a schema. Paid per call via Stripe.
The linked repository no longer exists on GitHub — it was deleted or made private.
This one has been quiet for a while
Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.
Connect this server
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add json-repair-mcp -e 'JSON_REPAIR_API_KEY=<JSON_REPAIR_API_KEY>' -- npx -y json-repair-mcp{
"mcpServers": {
"json-repair-mcp": {
"command": "npx",
"args": [
"-y",
"json-repair-mcp"
],
"env": {
"JSON_REPAIR_API_KEY": "<JSON_REPAIR_API_KEY>"
}
}
}
}[mcp_servers.json-repair-mcp]
command = "npx"
args = ["-y", "json-repair-mcp"]
env = { JSON_REPAIR_API_KEY = "<JSON_REPAIR_API_KEY>" }{
"mcpServers": {
"json-repair-mcp": {
"command": "npx",
"args": [
"-y",
"json-repair-mcp"
],
"env": {
"JSON_REPAIR_API_KEY": "<JSON_REPAIR_API_KEY>"
}
}
}
}{
"servers": {
"json-repair-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"json-repair-mcp"
],
"env": {
"JSON_REPAIR_API_KEY": "<JSON_REPAIR_API_KEY>"
}
}
}
}Put your own value in place of
<JSON_REPAIR_API_KEY> (API key obtained by visiting https://json-repair-api-9ybv.onrender.com/signup (Stripe Checkout, one-time signup)).
The author’s registry entry marks it as required.
Optional settings from the registry entry, left out of the block above:
JSON_REPAIR_API_URL (Base URL of the hosted API. Defaults to the production endpoint if unset).
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JSON Repair MCP — questions
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