
An open-source collection of reusable GPT/Codex skills for evidence-based research, source-guided learning, instruction auditing, and natural writing. Skills are self-contained and designed for compatible skill hosts.
Prices and medians update for the tier you select. Caution: thin market — treat statistics as indicative.
No providers in this market have a Pro-tier plan — try another tier.
Ranked by how closely each one matches GPT Skills's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Thin market — few comparable priced products; treat statistics as indicative.