diff --git a/.gitattributes b/.gitattributes
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--- /dev/null
+++ b/.gitattributes
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+# A hack to enable some degree of syntax highlighting on GitHub. Should be removed if GitHub ever receives native support for Wit files.
+*.wit linguist-language=Rust
\ No newline at end of file
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
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+name: CI
+on:
+ push:
+ branches: [main]
+ pull_request:
+ branches: [main]
+
+jobs:
+ abi-up-to-date:
+ name: Check ABI files are up-to-date
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v2
+ - uses: WebAssembly/wit-abi-up-to-date@v12
+ with:
+ wit-abi-tag: wit-abi-0.10.0
diff --git a/README.md b/README.md
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+++ b/README.md
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+# [Example WASI proposal]
+
+This template can be used to start a new proposal, which can then be proposed in the WASI Subgroup meetings.
+
+The sections below are recommended. However, every proposal is different, and the community can help you flesh out the proposal, so don't block on having something filled in for each one of them.
+
+Thank you to the W3C Privacy CG for the [inspiration](https://github.com/privacycg/template)!
+
+# [Title]
+
+A proposed [WebAssembly System Interface](https://github.com/WebAssembly/WASI) API.
+
+### Current Phase
+
+[Fill in the current phase, e.g. Phase 1]
+
+### Champions
+
+- [Champion 1]
+- [Champion 2]
+- [etc.]
+
+### Phase 4 Advancement Criteria
+
+TODO before entering Phase 2.
+
+## Table of Contents [if the explainer is longer than one printed page]
+
+- [Introduction](#introduction)
+- [Goals [or Motivating Use Cases, or Scenarios]](#goals-or-motivating-use-cases-or-scenarios)
+- [Non-goals](#non-goals)
+- [API walk-through](#api-walk-through)
+ - [Use case 1](#use-case-1)
+ - [Use case 2](#use-case-2)
+- [Detailed design discussion](#detailed-design-discussion)
+ - [[Tricky design choice 1]](#tricky-design-choice-1)
+ - [[Tricky design choice 2]](#tricky-design-choice-2)
+- [Considered alternatives](#considered-alternatives)
+ - [[Alternative 1]](#alternative-1)
+ - [[Alternative 2]](#alternative-2)
+- [Stakeholder Interest & Feedback](#stakeholder-interest--feedback)
+- [References & acknowledgements](#references--acknowledgements)
+
+### Introduction
+
+[The "executive summary" or "abstract". Explain in a few sentences what the goals of the project are, and a brief overview of how the solution works. This should be no more than 1-2 paragraphs.]
+
+### Goals [or Motivating Use Cases, or Scenarios]
+
+[What is the end-user need which this project aims to address?]
+
+### Non-goals
+
+[If there are "adjacent" goals which may appear to be in scope but aren't, enumerate them here. This section may be fleshed out as your design progresses and you encounter necessary technical and other trade-offs.]
+
+### API walk-through
+
+The full API documentation can be found [here](wasi-proposal-template.md).
+
+[Walk through of how someone would use this API.]
+
+#### [Use case 1]
+
+[Provide example code snippets and diagrams explaining how the API would be used to solve the given problem]
+
+#### [Use case 2]
+
+[etc.]
+
+### Detailed design discussion
+
+[This section should mostly refer to the .wit.md file that specifies the API. This section is for any discussion of the choices made in the API which don't make sense to document in the spec file itself.]
+
+#### [Tricky design choice #1]
+
+[Talk through the tradeoffs in coming to the specific design point you want to make.]
+
+```
+// Illustrated with example code.
+```
+
+[This may be an open question, in which case you should link to any active discussion threads.]
+
+#### [Tricky design choice 2]
+
+[etc.]
+
+### Considered alternatives
+
+[This section is not required if you already covered considered alternatives in the design discussion above.]
+
+#### [Alternative 1]
+
+[Describe an alternative which was considered, and why you decided against it.]
+
+#### [Alternative 2]
+
+[etc.]
+
+### Stakeholder Interest & Feedback
+
+TODO before entering Phase 3.
+
+[This should include a list of implementers who have expressed interest in implementing the proposal]
+
+### References & acknowledgements
+
+Many thanks for valuable feedback and advice from:
+
+- [Person 1]
+- [Person 2]
+- [etc.]
diff --git a/example-world.md b/example-world.md
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+++ b/example-world.md
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+
+
+
+
+Types
+
+u32
+
+## Import interface example-interface
+
Short interface description.
+Explanation for developers using the interface API. It should include an
+overview of the API as a whole as well as call out notable items in it,
+for example example-api-type and example-api-function.
+
+Types
+
+example-dep-type
+
+#### `record example-api-type`
+
Short type description
+Explanation for developers using this type. It may be useful to give
+some examples of places in the API where the type is used, such as in
+the arguments and return type of example-api-function.
+
+Detailed specification
+More rigorous specification details for implementers go here, if needed.
+The intention is to keep the developer-oriented docs focused on things that
+most developers will need to be aware of, while putting bulkier descriptions
+of precise behavior here.
+
+Record Fields
+
+
+Functions
+
+Short function description
+Explanation for developers using the API. This should describe the
+arguments which in this function are arg0, arg1, and arg2, and the
+return value.
+
+Detailed specification
+Similar to the details section above, this is meant for more rigorous
+specification details for implementors. This may explain what a compliant
+implementation MUST do, such as never returning an earlier result from a
+later call, for example.
+
+Params
+
+Return values
+
diff --git a/test/README.md b/test/README.md
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--- /dev/null
+++ b/test/README.md
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+# Testing guidelines
+
+TK fill in testing guidelines
+
+## Installing the tools
+
+TK fill in instructions
+
+## Running the tests
+
+TK fill in instructions
diff --git a/wit/deps/example-dep/example-api.wit b/wit/deps/example-dep/example-api.wit
new file mode 100644
index 0000000..60da323
--- /dev/null
+++ b/wit/deps/example-dep/example-api.wit
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+// An example dependency, showing how these look. Actual proposals should
+// delete this file and add their actual dependencies in the `deps` directory.
+
+interface example-dep-interface {
+ type example-dep-type = u32
+}
diff --git a/wit/example.wit b/wit/example.wit
new file mode 100644
index 0000000..04b0381
--- /dev/null
+++ b/wit/example.wit
@@ -0,0 +1,59 @@
+// Instructions for filling in this file:
+//
+// - Delete all these `//` comments, up to the first `///` comment.
+//
+// - Replace the remaining contents below with [Wit] code describing
+// `interface`s and/or `world`s, using the same formatting style.
+//
+// If you want to include examples of the API in use, these should be in the
+// README.md at the root of the repository and linked to from this file.
+//
+// [Wit]: https://github.com/WebAssembly/component-model/blob/main/design/mvp/WIT.md
+
+/// Short interface description.
+///
+/// Explanation for developers using the interface API. It should include an
+/// overview of the API as a whole as well as call out notable items in it,
+/// for example `example-api-type` and `example-api-function`.
+default interface example-interface {
+ use example-dep.example-api.example-dep-interface.{example-dep-type}
+
+ /// Short type description
+ ///
+ /// Explanation for developers using this type. It may be useful to give
+ /// some examples of places in the API where the type is used, such as in
+ /// the arguments and return type of `example-api-function`.
+ ///
+ ///
+ /// Detailed specification
+ /// More rigorous specification details for implementers go here, if needed.
+ /// The intention is to keep the developer-oriented docs focused on things that
+ /// most developers will need to be aware of, while putting bulkier descriptions
+ /// of precise behavior here.
+ ///
+ record example-api-type {
+ /// A description of a field.
+ field0: u64,
+ /// A description of another field.
+ field1: string,
+ }
+
+ /// Short function description
+ ///
+ /// Explanation for developers using the API. This should describe the
+ /// arguments which in this function are `arg0`, `arg1`, and `arg2`, and the
+ /// return value.
+ ///
+ ///
+ /// Detailed specification
+ /// Similar to the details section above, this is meant for more rigorous
+ /// specification details for implementors. This may explain what a compliant
+ /// implementation MUST do, such as never returning an earlier result from a
+ /// later call, for example.
+ ///
+ example-api-function: func(
+ arg0: example-api-type,
+ arg1: string,
+ arg2: example-dep-type,
+ ) -> result
+}
diff --git a/wit/world.wit b/wit/world.wit
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+++ b/wit/world.wit
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+// If the repository defines `interface`s, this file can define a minimal world
+// which contains those interfaces, to allow documentation to be generated for
+// them.
+//
+// Proposals should remove these `//` commments, and edit the `world` name and
+// imports below to pull in their own `interface`s.
+
+default world example-world {
+ import example-interface: pkg.example.example-interface
+}