Art. 9.05 PROOF

Here's a plain English summary of this rule.

If someone signs a bond promising to stop doing a certain trade, business, or job, and they keep doing it anyway, that's all the proof a court needs to show the bond was broken. The person suing doesn't have to prove anything else beyond showing the person kept working at what they promised to stop.

Once that breach is shown, the court can require payment of the entire bond amount. This means both the person who signed the bond and anyone who co-signed as a surety (guarantor) can be held responsible for paying the full amount, not just part of it.