@@ -0,0 +1,63 @@
+# Zed Extensions
+
+This directory contains extensions for Zed that are largely maintained by the Zed team. They currently live in the Zed repository for ease of maintenance.
+
+If you are looking for the Zed extension registry, see the [`zed-industries/extensions`](https://github.com/zed-industries/extensions) repo.
+
+## Structure
+
+Currently, Zed includes support for a number of languages without requiring installing an extension. Those languages can be found under [`crates/languages/src`](https://github.com/zed-industries/zed/tree/main/crates/languages/src).
+
+Support for all other languages is done via extensions. This directory ([extensions/](https://github.com/zed-industries/zed/tree/main/extensions/)) contains a number of officially maintained extensions. These extensions use the same [zed_extension_api](https://docs.rs/zed_extension_api/latest/zed_extension_api/) available to all [Zed Extensions](https://zed.dev/extensions) for providing [language servers](https://zed.dev/docs/extensions/languages#language-servers), [tree-sitter grammars](https://zed.dev/docs/extensions/languages#grammar) and [tree-sitter queries](https://zed.dev/docs/extensions/languages#tree-sitter-queries).
+
+## Dev Extensions
+
+See the docs for [Developing an Extension Locally](https://zed.dev/docs/extensions/developing-extensions#developing-an-extension-locally) for how to work with one of these extensions.
+
+## Updating
+
+> [!NOTE]
+> This update process is usually handled by Zed staff.
+> Community contributors should just submit a PR (step 1) and we'll take it from there.
+
+The process for updating an extension in this directory has three parts.
+
+1. Create a PR with your changes. (Merge it)
+2. Bump the extension version in:
+
+ - extensions/{language_name}/extension.toml
+ - extensions/{language_name}/Cargo.toml
+ - Cargo.lock
+
+ You can do this manually, or with a script:
+
+ ```sh
+ # Output the current version for a given language
+ ./script/language-extension-version <langname>
+
+ # Update the version in `extension.toml` and `Cargo.toml` and trigger a `cargo check`
+ ./script/language-extension-version <langname> <new_version>
+ ```
+
+ Commit your changes to a branch, push a PR and merge it.
+
+3. Open a PR to [`zed-industries/extensions`](https://github.com/zed-industries/extensions) repo that updates the extension in question
+
+Edit [`extensions.toml`](https://github.com/zed-industries/extensions/blob/main/extensions.toml) in the extensions repo to reflect the new version you set above and update the submodule latest Zed commit.
+
+```sh
+# Go into your clone of the extensions repo
+cd ../extensions
+
+# Update
+git checkout main
+git pull
+just init-submodule extensions/zed
+
+# Update the Zed submodule
+cd extensions/zed
+git checkout main
+git pull
+cd -
+git add extensions.toml extensions/zed
+```