A preview of the latest master branch can be found here.

The latest released version can be found here.

This repository contains the source files of the Interface Spec, which describes the externally visible behaviour of the Internet Computer. The language-independent description of this IC interface is available in ic.did.

It used to contain a reference implementation and acceptance test suite; these can now be found at https://github.com/dfinity/ic-hs.

This document describes the external interface of the Internet Computer. It is the authoritative source for interface details (request and function names, parameters, encodings). The goal is to have a document that is authoritative, and provides a place and a language to discuss external features of the Internet Computer in a hopefully concrete way. However, this document intentionally does not address how to implement this behavior, and cannot be used as an implementation spec.

The Interface Spec is versioned, using a three-component version like

0.2.1

Releases from this repository are tagged using a three-component code version number:

0.8.1
┬ ┬ ┬
│ │ └ The third component is bumped upon non-breaking changes to the spec.
│ └ The second component is bumped with a breaking change to the spec
└ Always zero for now.

Each major spec version has a release branch (e.g. release-0.8) that only sees non-breaking changes and bugfixes. A release branch should typically be “ahead” of all previous release branches.

The master branch contains finished designs, but is not directly scheduled for implementation. It lists version version number ∞. The reference implementation on this branch typically does not fully implement the spec. This branch should always be “ahead” of all the release branches.

This repository accepts external contributions, conditioned on acceptance of the Contributor Lincense Agreement.