Agent skill census: 24.8% require your own API key
Skillselion's Agent Skill Pricing Census analyzed 63,336 agent skills as of October 16, 2026: of the 4,902 skills with a pricing label, 24.8% require a bring-your-own API key and 70.4% are free to run. Documentation for 1,421 skills names a credential-style variable, led by RUNCOMFY_TOKEN (132 skills) and OPENAI_API_KEY (107 skills from 39 publishers).
- Of 4,902 priced skills, 1,215 (24.8%) need your own API key; 3,450 (70.4%) are free
- 1,421 skills name a credential-style variable across 742 distinct names
- OPENAI_API_KEY appears in 107 skills from 39 publishers; RUNCOMFY_TOKEN in 132 from 5
- Free skills take 89.7% of 84.7M cumulative installs
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