Kit (ConvertKit) API

convertkit.com

Provides programmatic access to Kit's creator email marketing platform to organize email subscribers and connect with them via integrations.

The Kit (ConvertKit) API API has freemium pricing; offers a free tier (Newsletter plan free for up to 1,000 subscribers; API documentation access included on all plans). Verified 2026-07-16 with per-field source links.

Marketing Verified 2026-07-16 low confidence

Base URL

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Auth

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Free tier

Newsletter plan free for up to 1,000 subscribers; API documentation access included on all plans

kit.com ↗

Pricing model

freemium

kit.com ↗

Pricing

Newsletter $0/mo, Creator $33/mo ($390/yr), Pro $66/mo ($790/yr) for 1,000 subscribers; API documentation available on all plans

kit.com ↗

Rate limits

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no source

OpenAPI spec

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MCP server

Kit MCP available (connects Claude, ChatGPT, Gemini, and more to Kit); included on Creator and Pro plans

kit.com ↗