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JSONViewerTool vs QAmcp

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

JSONViewerTool compared with QAmcp
DetailJSONViewerTool logo JSONViewerTool QAmcp
What it doesFast, browser-based JSON viewer, formatter, validator and converter that runs entirely client-side Free, open-source testing and monitoring for MCP servers
StageNot given Not given
FoundedNot given Not given
Based inNot given IN
Pricing modelFree Freemium
PricingNot given Free: browser test, CLI tool, GitHub check, and Monitor for 1 server with hourly checks and daily full tests. Pro: $19/month founding price (first 50 customers, then $29/month) for 3 servers, hourly full tests, 5-minute uptime checks, Slack alerts, and login support. Agency: $99/month (increases to
Key features
  • View JSON in tree, code, and text modes
  • Format and beautify unreadable JSON
  • Validate JSON and catch syntax errors
  • Minify JSON to reduce payload size
  • Convert JSON to CSV, Excel, YAML, and XML
  • Decode JWT tokens and inspect claims
  • Generate UUIDs and encode or decode Base64 data
  • Compare and diff JSON structures
  • Sort, search and transform JSON data
  • All processing runs 100% client-side in browser
  • Supports servers behind login and local servers
  • Generates shareable HTML reports
  • Email and Slack alerting for server changes
What makes it different
  • Privacy-first: all processing runs client-side with no server uploads, storage or logging
  • No installation or signup required; works directly in modern web browsers
  • Side-by-side input and output view for easy comparison and debugging
  • Comprehensive toolset covering viewing, formatting, validation, conversion and comparison in one place
  • Works on desktop and mobile browsers without any setup time
  • Checks are code-verified, never AI-judged, with plain evidence for each result
  • Completely free testing with no account required
  • Never modifies or deletes data; safe mode by default
  • No tracking, telemetry, or data sent beyond the tested server
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)9 +2 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)70
Citation Flow (Majestic)3018
Referring domains (Majestic)485

4 details filled in for both companies.

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