8 E-commerce APIs with verified auth, pricing and rate limits. 6 offer a free tier; 4 document an MCP server. Every field carries the source URL that states it.
| API | Category | Auth | Pricing | MCP | Free | Confidence |
|---|---|---|---|---|---|---|
| BuyWhere buywhere.ai | E-commerce | bearer_token | freemium | ● | ● | high |
| monday.com API monday.com | E-commerce | api_key | freemium | ● | ● | medium |
| Rendex rendex.dev | E-commerce | bearer_token | freemium | ● | ● | high |
| Api2Convert api2convert.com | E-commerce | api_key | usage_based | — | — | medium |
| API2Cart api2cart.com | E-commerce | api_key | usage_based | — | ● | medium |
| pdflayer API pdflayer.com | E-commerce | api_key | freemium | — | ● | medium |
| ClickUp API clickup.com | E-commerce | oauth2 | freemium | ● | — | low |
| Clockify clockify.me | E-commerce | — | freemium | — | ● | low |