# SignupSieve > Catch fake signups, not just bad emails. One API call returns a human score, a verdict and the reasons. Canonical Origin: https://signupsieve.pages.dev/ ## LLM Resources - [Full Content](https://signupsieve.pages.dev/llms-full.txt): Complete page content in markdown format. - [sitemap.xml](https://signupsieve.pages.dev/sitemap.xml): XML sitemap for search engines and crawlers. - [robots.txt](https://signupsieve.pages.dev/robots.txt): Crawler rules and permissions. ## Pages - [/](https://signupsieve.pages.dev/index.md) - [/docs](https://signupsieve.pages.dev/docs.md) - [/docs/endpoints](https://signupsieve.pages.dev/docs/endpoints.md) - [/docs/errors](https://signupsieve.pages.dev/docs/errors.md) - [/docs/examples](https://signupsieve.pages.dev/docs/examples.md) - [/docs/feedback](https://signupsieve.pages.dev/docs/feedback.md) - [/docs/reason-codes](https://signupsieve.pages.dev/docs/reason-codes.md) - [/docs/response-fields](https://signupsieve.pages.dev/docs/response-fields.md) - [/docs/verdicts](https://signupsieve.pages.dev/docs/verdicts.md) - [/free-email-checker](https://signupsieve.pages.dev/free-email-checker.md) - [/pricing](https://signupsieve.pages.dev/pricing.md) - [/privacy](https://signupsieve.pages.dev/privacy.md) - [/terms](https://signupsieve.pages.dev/terms.md)