The OpenC2 language standard provides a unified syntax and structure to send instructions to various security tools developed by different vendors that are not able to talk to each other using a common language. In this way, OpenC2 reduces the dependency on custom integrations and allows the organizations to build flexible, scalable, and vendor-agnostic security frameworks. The openc2lib library implements the standard language described in the OpenC2 normative specifications and it can be extended by new encoders and transfers protocols. In this way, the library is suitable to create custom openC2 stacks by a minimal effort, allowing the Producer to efficiently send commands to a Consumer and receive responses.