Skillselion vs ProtocolProbe
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Skillselion compared with ProtocolProbe
| Detail | 
Skillselion | 
ProtocolProbe |
|---|
| What it does | Directory of Claude Code skills, MCP servers and marketplaces ranked by real installs
| Free directory of MCP server facts with checked information from public records
|
|---|
| Stage | Not given
| Not given
|
|---|
| Founded | Not given
| Not given
|
|---|
| Based in | US
| Not given
|
|---|
| Pricing model | Not given
| Free
|
|---|
| Pricing | Browsing the catalog, using the public catalog API, and accessing research datasets marked CC BY are all free. No paid plans or subscription charges.
| Not given
|
|---|
| Key features | - Daily catalog updates from live registries
- Daily install count snapshots
- Automatic removal of dead repositories
- Open datasets with CC BY licensing
- Dated, frozen research censuses
- Public catalog API without API keys
- MCP protocol integration
| - 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
|
|---|
| What makes it different | - Ranked by actual adoption metrics, not paid placements
- Independent from tool makers
- Comprehensive ecosystem measurement through research
- Automatic quality gates and duplicate consolidation
- All statistics attributed and dated with no invented figures
| - 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
|
|---|
| Free plan | Not given
| Not given
|
|---|
| Open source | Not given
| Not given
|
|---|
| Platforms | Not given
| Not given
|
|---|
| Public API | Not given
| Not given
|
|---|
| Community votes | 0 | 0 |
|---|
| DR (Domain Rating by Ahrefs) | 35 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
|---|
| Trust Flow (Majestic) | 21 | 3 |
|---|
| Citation Flow (Majestic) | 43 | 22 |
|---|
| Referring domains (Majestic) | 187 | 7 |
|---|
3 details filled in for both companies.
More alternatives to Skillselion More alternatives to ProtocolProbe