Merge pull request #2978 from buildkite/ev-packages-api-packages-show

[PKG-7408] API docs for packages show

data/nav.yml

@@ -565,6 +565,8 @@
               path: "apis/rest-api/packages/registries"
             - name: "Registry tokens"
               path: "apis/rest-api/packages/registry-tokens"
+            - name: "Packages"
+              path: "apis/rest-api/packages/packages"
         - name: "Pipelines "
           # Keep space at end to prevent "Pipelines" in global nav bar being
           # highlighted when any child page of "API > REST > Pipelines" is selected.

pages/apis/rest_api/packages/packages.md

@@ -0,0 +1,38 @@
+# Packages API
+
+The packages tokens API lets you create and manage packages in a registry.
+
+## Get a package
+
+Returns the details for a single package.
+
+```bash
+curl -H "Authorization: Bearer $TOKEN" \
+  -X GET "https://api.buildkite.com/v2/packages/organizations/#{org.slug}/registries/#{registry.slug}/packages/#{id}"
+```
+
+```json
+{
+  "id": "0191e23a-4bc8-7683-bfa4-5f73bc9b7c44",
+  "url": "https://api.buildkite.com/v2/packages/organizations/my_great_org/registries/my-registry/packages/0191e23a-4bc8-7683-bfa4-5f73bc9b7c44",
+  "web_url": "https://buildkite.com/organizations/my_great_org/packages/registries/my-registry/packages/0191e23a-4bc8-7683-bfa4-5f73bc9b7c44",
+  "name": "banana",
+  "organization": {
+    "id": "0190e784-eeb7-4ce4-9d2d-87f7aba85433",
+    "slug": "my_great_org",
+    "url": "https://api.buildkite.com/v2/organizations/my_great_org",
+    "web_url": "https://buildkite.com/my_great_org"
+  },
+  "registry": {
+    "id": "0191e238-e0a3-7b0b-bb34-beea0035a39d",
+    "graphql_id": "UmVnaXN0cnktLS0wMTkxZTIzOC1lMGEzLTdiMGItYmIzNC1iZWVhMDAzNWEzOWQ=",
+    "slug": "my-registry",
+    "url": "https://api.buildkite.com/v2/packages/organizations/my_great_org/registries/my-registry",
+    "web_url": "https://buildkite.com/organizations/my_great_org/packages/registries/my-registry"
+  }
+}
+```
+
+Required scope: `read_packages`
+
+Success response: `200 OK`