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JSONViewerTool vs The MCP Census

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 The MCP Census
DetailJSONViewerTool logo JSONViewerToolThe MCP Census logo The MCP Census
What it doesFast, browser-based JSON viewer, formatter, validator and converter that runs entirely client-side Public-evidence gate for MCP servers before you install
StageNot given Not given
FoundedNot given Not given
Based inNot given AU
Pricing modelFree Not given
PricingNot given Free: 10 unique lookups/day (no account) or 1,000 credits/month (with account). Builder: $19/mo (2,000 credits/month). Pack: $9 one-time (1,000 never-expire credits). Team: $49/mo (10,000 credits/month). Search or lookup costs 1 credit per unique query per UTC day. Config audit costs 1 credit per co
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
  • Server lookup with PASS/REVIEW/BLOCK/UNKNOWN verdicts
  • Whole MCP config audit in one call
  • Free unmetered stats endpoint
  • MCP protocol endpoint for agents
  • Change feed showing what updated since last check
  • Webhook watches for specific servers
  • GitHub Action for CI preflight checks
  • Evidence links for every trust factor
  • Cross-references GitHub, npm, PyPI, and hosted endpoints
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
  • First public-evidence gate for MCP servers before installation
  • Continuous verification with daily re-harvest and rolling cycle checks
  • One-line agent rule for automatic preflight checks on every server operation
  • Free tier includes unmetered stats and 10 daily unique lookups with no signup
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 check4 no change since last check
Trust Flow (Majestic)74
Citation Flow (Majestic)3026
Referring domains (Majestic)4838

3 details filled in for both companies.

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