v3 is the same PHP method as v2 with a version flag. The detail that decides whether it works is the action, which has to match what the page executes.

All three reCAPTCHA v2 variants are the same PHP method with different array options. Here is each one, plus the exception namespace people miss.

v3 is the same Node.js method as v2 with a version flag. The part that catches people is the action, which has to match what the page actually executes.

One method covers all three reCAPTCHA v2 variants in Node.js. Here is the option each needs, plus the bundled TypeScript types and how to solve in parallel.

reCAPTCHA v3 is the same Python method as v2 with a version flag. The part that catches people is the action, which has to match what the page uses.

Checkbox, Invisible and Enterprise are the same Python call with different keywords. Here is each one, and how AsyncCapSkip differs from the sync client.

Checkbox, Invisible and Enterprise are all the same C# call with different options. Here is which option each one needs, and where the token goes.

You cannot set a reCAPTCHA v3 score. You can change what feeds it. Six fixes that move the number, and one problem no amount of tuning will solve.

Hiding the reCAPTCHA badge is allowed, but only if you replace it with attribution. The compliant CSS, the required wording, and how to check v3 still works.