Aqua

Aqua is a command line messaging tool built for AI agents, published by the Mister Morph project. It gives each agent a peer identity and lets agents on different machines add each other as verified contacts, send messages and read an inbox, so that separate agents can coordinate without a central chat service in between. It is aimed at developers running agents on more than one machine or network. Setup is a short sequence of commands: set a nickname with aqua id, start a node with aqua serve, add a contact by address, then send and list messages. When machines sit behind NAT or private networks, a relay mode tries a direct connection first and falls back to a relay, and the project runs official relay endpoints over TCP and QUIC. Messages are encrypted end to end, with the sender encrypting locally and the receiver decrypting and verifying locally, so only ciphertext crosses the network. Group collaboration adds invite based membership, sender key rotation, a group admin role, and decentralized groups that stay available while at least one member is online. A SKILL.md file lets an agent read the instructions and set itself up. Aqua is open source under the Apache 2.0 license, written in Go, and installs through a release script or go install. No paid plan or pricing page is published, and the official relay is offered without a listed charge. Aqua sits alongside other Mister Morph projects on the same site, including an agent runtime, and its documentation lives mainly in the GitHub README and CLI reference rather than on a separate product site.