Comparison
ECC vs Sigistry Plugin Catalog (formerly Claude Registry)
ECC has more GitHub stars (281,307 vs 0). ECC was updated more recently (last commit 1d ago). Data comes straight from GitHub and refreshes daily.
ECC
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
$
/plugin marketplace add https://github.com/affaan-m/ECC
Sigistry Plugin Catalog (formerly Claude Registry)
Renamed: prefer com.sigistry/plugin-catalog. This legacy endpoint keeps working.
$
claude mcp add --transport http sigistry-plugin-catalog-former https://clauderegistry.com/mcp| Metric | ECC | Sigistry Plugin Catalog (formerly Claude Registry) |
|---|---|---|
| Type | MCP server | MCP server |
| GitHub stars | 281,307 | 0 |
| Stars, last 7 days | +1,108 | n/a |
| Forks | 41,827 | 0 |
| Upvotes | 1 | 0 |
| Language | JavaScript | n/a |
| License | MIT | n/a |
| Last commit | 1d ago | n/a |
| Created | Jan 2026 | n/a |
| Categories | AI & LLM tooling, Memory & knowledge, Security | n/a |