ProtocolProbe vs fedo
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
ProtocolProbe compared with fedo
| Detail | 
ProtocolProbe | 
fedo |
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| What it does | Free directory of MCP server facts with checked information from public records
| In-app feedback and feature voting SDK for Android and iOS
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | Not given
| Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Starter: Free (1 app, no credit card). Plus and Pro are in early access with locked-in rates available on request via email.
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| Key features | - 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
| - Native feedback screen that matches app theme automatically
- One-tap upvoting for feature requests
- Comment threads with replies on Plus and Pro
- Users and external IDs list
- Guest user support without login required
- Data export as JSON or CSV
- Webhooks for Slack, Discord, and custom integrations on Pro
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| What makes it different | - 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
| - Users submit feedback without creating an account or leaving the app
- Automatically matches Material theme on Android and native styling on iOS
- Free plan for one app with no credit card required
- No passive data collection, only fixed device properties and user submissions
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet |
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| Trust Flow (Majestic) | 3 | Not checked yet |
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| Citation Flow (Majestic) | 22 | Not checked yet |
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| Referring domains (Majestic) | 7 | Not checked yet |
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4 details filled in for both companies.
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