REA Playspace

What is REA Playspace and what is it for?

REA Playspace is a small Holochain app that puts a graphical canvas in front of resource accounting, letting you draw the things that move and the processes that change them. It exists to make the ideas behind Valueflows — planned commitments and recorded economic events between agents — easier to learn by doing, while the client libraries for that model were still being worked out.

REA Playspace comes from Lightningrod Labs, the Holochain development group behind Moss, Acorn and SnapMail. The group presents it as a prototype app for REA accounting, built on the Holochain REA Framework, and the repository describes it plainly as an app for playing with REA accounting. Its purpose was educational and experimental rather than bookkeeping in earnest: a place to explore the accounting vocabulary while client libraries for Valueflows on Holochain were still being written.

Using it means working on a visual canvas. You create Resource Specifications for the things that move — materials, work, skills — and Process Specifications for what transforms, repairs or transports them, then drag and connect those nodes with flow lines. Each connection is defined as a commitment, a planned flow, or an event, a flow that actually happened. A transfer between two agents is drawn the same way, so a network can record who provided what to whom.

An example shipped with the repository: an annotated version of the same canvas in which the final output resource is tacos, included to make the Valueflows data model concrete. The README's standing caveat is that this is pre-production software that should not be relied on to work consistently, and that data can become inaccessible when the Holochain version or zome code changes. Its documented install path runs through Holochain Launcher builds from that period, so the record is best read as historical rather than as a current download.

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