Head-to-head · Build phase · Marketplace
Addy Agent Skills vs Ecc
For the Build phase, Ecc leads Addy Agent Skills on adoption - 299k vs 114k GitHub stars. Both are marketplaces; pick by fit, not just rank - the full side-by-side is below.
A side-by-side comparison of two marketplace options for the Build phase - adoption, what each is for, and how to install them.
Ranked by Skillselion · adoption from the skills.sh registry & GitHub.
Addy Agent Skills vs Ecc
| Addy Agent Skills | Ecc | |
|---|---|---|
| GitHub stars | 114k | 299k |
| Installs | 0 | 0 |
| Adoption rank (this phase) | #8 | #2 |
| Built for | Claude Code | Claude Code |
| What it is | 1 plugins | ECC is a marketplace that installs a single harness-native operator plugin bundling agents, skills, hooks, rules, and reusable workflows for coding agents. |
| Install | /plugin marketplace add addyosmani/agent-skills | /plugin marketplace add affaan-m/ECC |
Common questions
Addy Agent Skills vs Ecc: which is better for build?
Ecc ranks higher by adoption (299k vs 114k GitHub stars), but both are marketplaces for the Build phase - choose by fit.
How do I install Addy Agent Skills?
Run: /plugin marketplace add addyosmani/agent-skills
How do I install Ecc?
Run: /plugin marketplace add affaan-m/ECC
More for the Build phase
See the full ranked shortlist of best marketplace options for build, browse every Marketplaces, or see every best-of shortlist.