The MCP Census vs ProtocolProbe
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
The MCP Census compared with ProtocolProbe
| Detail | 
The MCP Census | 
ProtocolProbe |
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| What it does | Public-evidence gate for MCP servers before you install
| Free directory of MCP server facts with checked information from public records
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| Stage | Not given
| Not given
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| Founded | Not given
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| Based in | AU
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| Pricing model | Not given
| Free
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| Pricing | 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
| Not given
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| Key features | - 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
| - Free JSON API with no authentication required
- Server search and filtering by name and description
- Rankings by downloads, stars and record checks
- Server comparison and topic filtering
- Self-test command for your own server
- Record checks with badge for README
- Corrections log tracking fact updates
- CC BY 4.0 licensed data export
- Change tracking for registry updates
- Allowlist export for company filtering
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| What makes it different | - 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
| - Scheduled re-checking of all facts on a regular basis, unlike the official registry which only checks on publication
- Every fact shown with its source and the date checked
- No ads, sponsors or paid placements; income never changes listings or rankings
- Corrections publicly logged and requests always answered with reasoning
- Open API accessible to everyone without authentication key
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 4 | 3 |
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| Citation Flow (Majestic) | 26 | 22 |
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| Referring domains (Majestic) | 38 | 7 |
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3 details filled in for both companies.
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