Comparison
ZeroWidth Caliper vs ECC
ECC has more GitHub stars (279,762 vs 0). ECC was updated more recently (last commit 2d ago). Data comes straight from GitHub and refreshes daily.
ZeroWidth Caliper
Build datasets and rubrics, then run evals that score your AI in Caliper.
$
claude mcp add --transport http zerowidth-caliper https://api.zerowidth.ai/mcp/x/caliper
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| Metric | ZeroWidth Caliper | ECC |
|---|---|---|
| Type | MCP server | MCP server |
| GitHub stars | 0 | 279,762 |
| Stars, last 7 days | n/a | n/a |
| Forks | 0 | 41,620 |
| Upvotes | 0 | 0 |
| Language | n/a | JavaScript |
| License | n/a | MIT |
| Last commit | n/a | 2d ago |
| Created | n/a | Jan 2026 |
| Categories | n/a | AI & LLM tooling, Memory & knowledge, Security |