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JSONShelf

Official registry AI and agents

Deterministic JSON repair, validate, example-gen, schema-coerce for agents. Zero LLM, sub-10ms.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http jsonshelf 'https://jsonshelf.vercel.app/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "jsonshelf": {
            "type": "http",
            "url": "https://jsonshelf.vercel.app/mcp"
        }
    }
}

Frequently asked questions

What is JSONShelf?

Deterministic JSON repair, validate, example-gen, schema-coerce for agents. Zero LLM, sub-10ms.

How do I install JSONShelf?

It runs as a remote server. In Claude Code: claude mcp add --transport http jsonshelf 'https://jsonshelf.vercel.app/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does JSONShelf need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is JSONShelf open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains JSONShelf?

It is published by walkojas-boop. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.