For Developers
API access and plans for finance & accounting tools on this site. Your account and API key are specific to this domain.
Plans (3 packages)
One free package (no signup) and two paid packages. Paid packages are currently free with registration.
| Package | What you get | Limits (API) |
|---|---|---|
| Free | All finance tools on site, no account. API without key when available. | 3–5 runs/day per tool, with ad. 1 req/10s per IP when API is live. |
| Pro | One-time purchase. API key, usage dashboard. Account is specific to this site. | 30–50 runs/day per tool, no ad. Currently free with registration. |
| API | Subscription. No ad, API access, higher limits. AI-assist (soon). | Higher rate limits, dedicated API. Coming later. |
API & endpoints
All tools currently run in the browser. When the API is released, you will get endpoints for IBAN validation, VAT check, SWIFT/BIC, invoice totals, tax calculations, and other finance tools. Discovery: https://finchecklab.com/api/v1/status (when available).
See llms.txt for AI-friendly site info and usage policy.