Developer · Local MCP server

jsonshim

Recovers malformed LLM JSON. MCP build: 218/300 on MALFORMED-300 (library build 282/300).

Visit jsonshim's website

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
org.toolkitlabs/jsonshim
Version
1.0.2
Status
Active
Category
developer
Transport
stdio (local process)
Package
npm
Published
2026-08-27
Updated
2026-08-27
Publisher
org.toolkitlabs
Website
toolkitlabs.org/tools/jsonshim-mcp/
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npmjsonshim-mcp1.0.2stdioNone declared

How to connect jsonshim

jsonshim runs locally from a Node.js package published to the npm registry: jsonshim-mcp version 1.0.2. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y jsonshim-mcp@1.0.2.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "jsonshim": {
      "command": "npx",
      "args": [
        "-y",
        "jsonshim-mcp@1.0.2"
      ]
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

More developer servers

All 6,250 →
ServerRunsEndpoint or package
Json Repair MCPRepairs malformed JSON from LLM output, validated against a schema. Paid per call via Stripe.Local · stdionpm: json-repair-mcp
JSON to TypesConvert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.Remote · HTTPjson-to-types.gumballtools.com
JsonFabricaGenerate realistic, relational synthetic JSON test data from templates, via the JsonFabrica API.Local · stdionpm: @jsonfabrica/mcp-server
JSONShelfDeterministic JSON repair, validate, example-gen, schema-coerce for agents. Zero LLM, sub-10ms.Remote · HTTPjsonshelf.vercel.app
Judges Panel45 judges that evaluate AI-generated code for security, cost, and quality with built-in AST.Local · stdionpm: @kevinrabun/judges
JULABO CirculatorMCP server for JULABO heating and refrigerated circulators (CORIO, MAGIO, DYNEO).Local · stdioPyPI: labmcp-julabo
Jumuia MCPMCP server for community-group coordination in East Africa (jumuia = community)Local · stdioPyPI: jumuia-mcp
Jungle CleanerLowers your AWS bill by helping you clean up and optimize your setup.Remote · HTTPjunglecleaner.com