Ext Ops Panel
Open dashboard

FixMyJSON

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

MCP server · by tonbifun

About

FixMyJSON is an MCP server published by tonbifun. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-15 and have recorded no change since. As of our marketplace pass on 2026-10-16.

What it asks for

  • Runs remotely

None of the marketplaces we read publishes its tools or the settings it asks for.

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

A one-click link opens the client, which asks you to confirm before it adds the server.

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a remote MCP server

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --transport http fixmyjson https://fixmyjson-api.onrender.com/mcp
Codex~/.codex/config.toml
[mcp_servers.fixmyjson]
url = "https://fixmyjson-api.onrender.com/mcp"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "fixmyjson": {
      "url": "https://fixmyjson-api.onrender.com/mcp"
    }
  }
}

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 0.4.0 No figure published Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

  1. Became a product we track
  2. Official MCP Registry: appeared

Similar plugins

Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.

  • JsonMend

    Repair broken JSON from LLM output and validate it against a JSON Schema.

    by jsonmend.mike-tusa.workers.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • json-repair-mcp io.github.grupoanesthy-spec/json-repair-mcp

    Repairs malformed JSON from LLM output, validated against a schema. Paid per call via Stripe.

    by grupoanesthy-spec · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • jsonaut io.github.shoggi211/jsonaut

    Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.

    by shoggi211 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • JSON Validator API

    JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.

    by Br0ski777 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Agent JSON Reliability

    Deterministic inspect, safe repair, and JSON Schema validation for agent JSON. No LLM.

    by toninovo4249-ai · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • JSON Schema Tools

    Validate JSON against a schema with Ajv, infer a schema from samples and diff two schemas.

    by basitalisandhu · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • JSONShelf

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

    by walkojas-boop · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Payload Validator

    Validate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.

    by gumballtools.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • json io.github.rog0x/json

    JSON/YAML/CSV validate, diff, transform for AI agents

    by rog0x · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Contract Guard

    Deterministic JSON Schema validation with exact violations and conservative type normalization.

    by othepro211 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Similar plugins by marketplace

The same question asked of one marketplace at a time: is there an analog of this plugin there?

Has a listing on Claude Code: claude-plugins-community (5)
  • fhir-format

    Accuracy-first FHIR R4/R4B/R5 skill for JSON formatting and reasoning. It labels claims as normative/version-delta/profile-dependent/practice, requires source-backed normative…

    by dnlbox · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • sosa-compliance-checker

    Audit your Claude plugins, skills, and coding agents against the SOSA methodology — Supervised Orchestrated Secured Agents. Scans your entire plugin ecosystem and evaluates each…

    by MSApps-Mobile · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • api-contract-forge

    : Build production-ready API endpoints with proper contracting for any tech stack, or analyze existing API responses to generate typed contracts. Supports Express, NestJS…

    by rumitdev · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • scriptify

    Turn LLM instructions (skills, plugins, prompts) into standalone, deterministic scripts — more reliable than agent calls, with no token cost and faster execution.

    by ygongdev · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • promptguard

    LLM security for AI coding agents. Protect applications from prompt injection, PII leakage, and data exfiltration. Provides MCP tools for scanning text, redacting PII, and…

    by acebot712 · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

Has a listing on Claude Code: claude-plugins-official (5)
  • 42crunch-api-security-testing

    Automate API security directly in Claude Code with 42Crunch - automatically audit OpenAPI specs, detect vulnerabilities aligned with OWASP API Security risks (including…

    by 42Crunch-AI · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude Code: claude-plugins-community · Describes nearly the same job

  • DeepEval

    Skills for adding DeepEval evaluations, tracing, datasets, Confident AI reports, and iterative improvement loops to AI applications.

    by confident-ai · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Community GitHub marketplaces · Describes nearly the same job

  • langfuse

    Skills for working with Langfuse, the open-source LLM engineering platform for tracing, prompt management, and evaluation.

    by langfuse · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes nearly the same job

  • pydantic-ai

    Write accurate Pydantic AI code from the start. Up-to-date patterns, decision trees, and common gotchas for agents, tools, structured output, streaming, and multi-agent apps.

    by pydantic · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude Code: claude-plugins-community · Describes nearly the same job

  • outputai

    Output.ai workflow development toolkit for Claude Code. Adds 5 specialist agents (planner, builder, debugger, prompt writer, quality reviewer), 40+ slash-command skills covering…

    by growthxai · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

Has a listing on Claude: knowledge-work-plugins (5)
  • langfuse

    Skills for working with Langfuse, the open-source LLM engineering platform for tracing, prompt management, and evaluation.

    by langfuse · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes nearly the same job

  • Pixeltable

    Build multimodal AI applications with Pixeltable -- tables, computed columns, embedding search, UDFs, tool-calling agents, and 25+ AI provider integrations.

    by pixeltable · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Community GitHub marketplaces · Describes nearly the same job

  • Desktop Commander

    MCP server for terminal commands, file operations, and process management

    by wonderwhy-er · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-official, Docker MCP Catalog, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • AI-Firstify

    AI-first project auditor and re-engineer based on the 9 design principles and 7 design patterns from the TechWolf AI-First Bootcamp

    by techwolf-ai · Plugin bundle

    Listed on: Claude: knowledge-work-plugins, Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job

  • servicenow-sdk

    Create, edit, and deploy ServiceNow applications with the Fluent SDK effortlessly through Claude AI.

    by ServiceNow · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Community GitHub marketplaces · Describes nearly the same job

Has a listing on Codex: openai-curated (openai/plugins) (5)
  • Plugin Eval

    Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.

    by OpenAI Codex · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • OpenAI Developers

    Build with OpenAI APIs, Agents SDK, and ChatGPT Apps, and create and save OpenAI API keys from Codex.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • NVIDIA

    Skills for NVIDIAs ecosystem spans GPU acceleration, CUDA, AI agents, inference, robotics, Physical AI, Omniverse, and simulation. This plugin helps you understand the pieces…

    by NVIDIA · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • CodeRabbit

    AI-powered code review in Codex, powered by CodeRabbit.

    by CodeRabbit AI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • Datadog (Preview)

    Available for US1 customers only. Analyze, investigate, and act on your Datadog telemetry directly from ChatGPT using natural language. Ask questions about your production…

    by Datadog · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

Has a listing on Community GitHub marketplaces (4)
  • pydantic

    Validate and serialize data with Pydantic — modeling patterns, constraints, custom validators, coercion, and discriminated unions

    by Pydantic · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • data-validation-suite

    Schema validation, data quality monitoring, streaming validation pipelines, and input validation for backend APIs

    by Seth Hobson · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • data-validation-suite

    Schema validation, data quality monitoring, streaming validation pipelines, and input validation for backend APIs

    by Seth Hobson · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • pydantic-ai-harness

    Extend Pydantic AI agents with batteries-included capabilities from pydantic-ai-harness — coding agents and sandboxed workspaces, Code Mode, sub-agents and planning, memory…

    by Pydantic · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

Has a listing on Copilot CLI: github/awesome-copilot (5)
  • doublecheck

    Three-layer verification pipeline for AI output. Extracts claims, finds sources, and flags hallucination risks so humans can verify before acting.

    by Awesome Copilot Community · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • BLEA

    Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.

    by Nitmi · MCP server

    Listed on: Official MCP Registry, Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • agent-council

    A runtime-portable 5-agent quality gate that adjudicates text artifacts before they ship. Five role-conditioned LLM deliberators run a 2-round async protocol with cross-read…

    by Avyayalaya · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot, Community GitHub marketplaces · Describes nearly the same job

  • edge-ai-tasks

    Task Researcher and Task Planner for intermediate to expert users and large codebases - Brought to you by microsoft/edge-ai

    by Awesome Copilot Community · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • ai-team-orchestration

    Run a lightweight, role-separated AI development team with flexible tools, developer-selected models, proportionate planning, and optional QA.

    by Denis Evdokimov · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

Has a listing on Copilot CLI: github/copilot-plugins (5)
  • microsoft-365-agents-toolkit

    Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • dataverse

    Build and manage Microsoft Dataverse solutions using natural language. Includes table/column creation, solution lifecycle, data operations, and MCP server configuration.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot, Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • canvas-apps

    Build Power Apps Canvas Apps using the Canvas Authoring MCP server.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • workiq

    Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • advanced-security

    Advanced Security plugin for GitHub Copilot.

    by github · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

Has a listing on Cursor: cursor/plugins (5)
  • Ralph Loop

    Iterative self-referential AI loops using the Ralph Wiggum technique.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Agent Compatibility

    CLI-backed repo compatibility scans plus agents that audit startup, validation, and docs against reality.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Cursor SDK

    Build apps, scripts, and automations with the TypeScript SDK.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Orchestrate

    Fan large tasks out across parallel cloud agents with planners, workers, verifiers, and structured handoffs.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Grok Voice

    Add Grok voice to an app: realtime speech-to-speech, speech-to-text dictation, text-to-speech read-aloud, and a log-driven fix loop for voice sessions.

    by Eric Zakariasson · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

Has a listing on Docker MCP Catalog (5)
  • OpenAPI Toolkit

    Fetch, validate, and generate code or curl from any OpenAPI or Swagger spec - all from a single URL.

    by lepoco · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • mcp-neo4j-data-modeling io.github.neo4j-contrib/mcp-neo4j-data-modeling

    A simple Neo4j MCP server for creating graph data models.

    by neo4j-contrib · MCP server

    Listed on: Official MCP Registry, Docker MCP Catalog · Describes nearly the same job

  • Opik

    Read and score Opik traces, experiments, datasets and prompts from your AI assistant.

    by comet-ml · MCP server

    Listed on: Official MCP Registry, Docker MCP Catalog · Describes nearly the same job

  • Needle Remote

    Production-ready RAG service to search and retrieve data from your documents.

    by docker · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Postman MCP Server

    Give your AI agents trusted access to the full Postman platform.

    by postman.com · MCP server

    Listed on: Official MCP Registry, Docker MCP Catalog · Describes nearly the same job

Has a listing on Official MCP Registry (5)
  • JsonMend

    Repair broken JSON from LLM output and validate it against a JSON Schema.

    by jsonmend.mike-tusa.workers.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • json-repair-mcp io.github.grupoanesthy-spec/json-repair-mcp

    Repairs malformed JSON from LLM output, validated against a schema. Paid per call via Stripe.

    by grupoanesthy-spec · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • jsonaut io.github.shoggi211/jsonaut

    Repair malformed JSON from LLM/agent output; optional JSON Schema coercion. Free + x402 paid.

    by shoggi211 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • JSON Validator API

    JSON syntax validation, JSON Schema checking, structure stats. x402 micropayment.

    by Br0ski777 · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • Agent JSON Reliability

    Deterministic inspect, safe repair, and JSON Schema validation for agent JSON. No LLM.

    by toninovo4249-ai · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

Want this mark on your plugin in our catalog?

Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works

You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.

Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.

Where the data comes from: how the catalog is built