This checker tells you whether a specific combination of passives, active skills and passive slots is a legal build on a Pal in a chosen Palworld version. It enforces the same limits the game does — up to 4 passive slots and 3 active skills per Pal — and currently supports 2 game versions, each checked against its own dataset.
Choose a target Pal, add the components the build must carry, then check.
Build Legality Checker
What this checker does not do
It does not calculate which species hatches from two parents.
It does not find the shortest, cheapest, or fastest breeding route.
It does not estimate probabilities, egg counts, IVs, or cake effects.
What does the Build Legality Checker actually check?
Whether the exact combination of passives, active skills and passive slots you enter is obtainable on the chosen Pal in the selected Palworld version — the same rules every published verdict page uses.
Does the checker cover every Palworld version?
It currently supports 2 versions; each one is checked against its own independently verified dataset, so switching versions can change the verdict.
Is a passing result the same as a published verdict page?
Yes — the checker runs the identical engine that produces every published build page on this site, just without a permanent URL for that exact combination.