Concepts
CAP is one exchange: a visiting agent sends a message to a company's agent and reads the reply. Access decides what that agent may answer about a person's account.
| Concept | What it is |
|---|---|
| Messages | One question and its answer, with a status while the owner works |
| Access | Public questions need nothing. Account questions need the person's login |
The specification is the contract. Usage is how to call it.