Create sequence diagrams with simple online tool is a free webapp for making sequence diagrams. You simply edit the text on the left and the diagram is updated in real time. You can download your sequence diagrams as images or distribute with a link.

Title: Did Auth Client -> Server: createDidAuthRequestToken(clientDid) Server -> Server: didAuthLib.createDidAuthRequestToken(clientDid, expiresAt?) Client <-- Server: 200 [didAuthRequestToken] Client -> Client: auth = didAuthLib.createDidAuthResponseToken (didAuthRequestToken, expiresAt?) Client -> Server: anyRequestWithAuth(auth) Server -> Server: didAuthLib.verifyDidAuthResponseToken(auth, verifyOptions)