Boilerplate
Short (one sentence): RateKit (ratekit.org) is a free, no-signup suite of business calculators for founders and freelancers, with every calculator also available as a JSON API and an MCP server.
Long (one paragraph): RateKit is a collection of 19 free business calculators — ROI, break-even analysis, freelance rate, burn rate & runway, LTV:CAC, SAFE note conversion, business loan APR, VAT/GST, self-employment tax, and more — built for founders, freelancers, and startup teams who need a fast, trustworthy number without signing up for anything. Every calculation runs client-side in the browser, so no data is ever sent to a server. Each calculator also ships as a free, no-auth JSON API endpoint, an embeddable widget (?embed=1), and as a tool in an open MCP server for Claude and other AI agents. RateKit is built and maintained by Azat Israilov.
Fact sheet
- Launched: 2026
- Calculators: 19, covering freelancers, startups, and small business finance
- Pricing: 100% free, no account, no credit card
- Privacy: all math runs client-side — no data sent to a server
- Languages: English and Russian (15 of 19 calculators)
- Developer access: free JSON API, OpenAPI spec, and an MCP server (18 tools) for Claude and other AI agents
- Embeddable: any calculator can be dropped into another site with
?embed=1 - Founder: Azat Israilov — azatisrail.org
- Source: github.com/AIsrail/ratekit (MIT licensed)
Brand assets
Logo files (right-click → save, or use directly):
Wordmark: RateKit, set in Plus Jakarta Sans (800 weight). Brand colors:
| Name | Hex | Use |
|---|---|---|
| Blue | #3756F9 | Primary — "Kit" wordmark, links, primary buttons |
| Violet | #7B5CFA | Secondary — gradients, accents |
| Green | #0D9668 | Positive results, success states |
| Ink | #0B0C14 | Body text |
Screenshots
No login or setup needed to capture your own — every tool is public and instant. Good starting points: the homepage, the ROI calculator, and the SAFE note calculator. Append ?embed=1 to any calculator URL for a clean, chrome-free screenshot of just the tool.
Usage
You're free to write about RateKit, screenshot it, link to it, and embed it — no permission needed, no exclusivity, no fee. If you'd like a quote, a walkthrough, or have a question before publishing, email below.
Press contact
Azat Israilov, founder — [email protected]