**Skill Hub** is the community marketplace at agentskills.io where teams publish official optional and contributed skill documents installable into 📝Hermes Agent via hermes skills install.
Skill Hub is the registry side of the 📝agentskills.io ecosystem — separate from the open standard itself, which defines the format, but co-located on the same domain. The hub holds two tiers: official optional skills curated by Nous Research that ship outside the default agent install, and community-contributed skills published by individual teams. Both categories conform to the same Markdown-and-YAML structure, so installing a skill from either tier is the same one-line operation.
The hermes skills install command pulls a named skill from the hub into the local agent's library, where it becomes loadable the moment a relevant task appears. Installed skills sit alongside skills the agent has generated itself through the 📝closed learning loop, indistinguishable in shape — the runtime treats hand-authored, community-shared, and self-generated skills as members of one library.
Skill Hub is to the agentskills.io standard what npm is to the JavaScript package format: a marketplace that makes the standard useful at scale. The marketplace's value compounds with adoption — more implementing runtimes mean more reusable skills, more reusable skills mean more reasons for runtimes to implement, and the closed learning loop pulls successful local skills upward into the shared pool.