# Post Conditions

- [principal](/reference/stacks.js/stacks-transactions/post-conditions/principal.md)
- [origin](/reference/stacks.js/stacks-transactions/post-conditions/origin.md)
- [fromHex](/reference/stacks.js/stacks-transactions/post-conditions/fromhex.md)
- [postConditionToHex](/reference/stacks.js/stacks-transactions/post-conditions/postconditiontohex.md)