At work, to alleviate this issue, we use a client library for service A (i.e., one that provides service.getChipmunks(color='blue')). This gives you the compile time check, assuming the client library is a compiled language.
One step better is autogenerated client libraries where a new version is created every time a new version of swagger.yaml is deployed. However, I don't know an open source project that does this.
One step better is autogenerated client libraries where a new version is created every time a new version of swagger.yaml is deployed. However, I don't know an open source project that does this.