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+---
+layout: default
+title: Autocomplete API
+---
+
+The Autocomplete API provides search functionality for CFEngine classes and variables.
+
+## Search classes
+
+Searches for CFEngine classes by name using case-insensitive pattern matching.
+
+**URI:** https://hub.cfengine.com/api/autocomplete/classes
+
+**Method:** GET
+
+**RBAC permission:** `autocomplete.get.classes` (allowed by default)
+
+**Parameters:**
+
+- **query** _(string)_
+  Search pattern for class names. Required. Must be 1-100 characters and contain only letters, numbers, dots, colons, or underscores.
+
+**Example request (curl):**
+
+```console
+curl --user <username>:<password> \
+  https://hub.cfengine.com/api/autocomplete/classes?query=cfe
+```
+
+**Example response:**
+
+```
+HTTP 200 OK
+[
+    "cfengine",
+    "cfengine_3",
+    "cfengine_3_28",
+    "cfengine_3_28_0a",
+    "cfengine_3_28_0a_0a2e3af8b",
+    "cfengine_reporting_hub"
+]
+```
+
+**Output:**
+
+Returns an array of class names matching the search pattern, sorted alphabetically.
+
+**Responses:**
+
+| HTTP response code       | Description         |
+| ------------------------ | --------------------|
+| 200 OK                   | Successful response |
+| 422 Unprocessable Entity | Validation errors   |
+
+**Error response examples:**
+
+Missing required field:
+
+```
+HTTP 422 Unprocessable Entity
+{
+  "success": false,
+  "errors": [
+    {
+      "field": "[query]",
+      "message": "This field is missing."
+    }
+  ]
+}
+```
+
+## Search variables
+
+Searches for CFEngine variables by name using case-insensitive pattern matching.
+
+**URI:** https://hub.cfengine.com/api/autocomplete/variables
+
+**Method:** GET
+
+**RBAC permission:** `autocomplete.get.variables` (allowed by default)
+
+**Parameters:**
+
+- **query** _(string)_
+  Search pattern for variable names. Required. Must be 1-100 characters and contain only letters, numbers, dots, colons, or underscores.
+
+**Example request (curl):**
+
+```console
+curl --user <username>:<password> \
+  https://hub.cfengine.com/api/autocomplete/variables?query=cf
+```
+
+**Example response:**
+
+```
+HTTP 200 OK
+{
+    "default:sys.cfengine_roles": "cfengine_roles",
+    "default:sys.cf_version": "cf_version",
+    "default:def.mpf_admit_cf_runagent_shell_selected": "mpf_admit_cf_runagent_shell_selected",
+    "default:sys.cf_edition": "cf_edition"
+}
+```
+
+**Output:**
+
+Returns an object where keys are fully qualified variable names (namespace:bundle.variablename) and values are the variable names, sorted alphabetically by variable name.
+
+**Responses:**
+
+| HTTP response code       | Description         |
+| ------------------------ | --------------------|
+| 200 OK                   | Successful response |
+| 422 Unprocessable Entity | Validation errors   |
+
+**Error response examples:**
+
+Missing required field:
+
+```
+HTTP 422 Unprocessable Entity
+{
+  "success": false,
+  "errors": [
+    {
+      "field": "[query]",
+      "message": "This field is missing."
+    }
+  ]
+}
+```
+
+## Search inventory attributes
+
+Searches for inventory attribute names using case-insensitive pattern matching.
+
+**URI:** https://hub.cfengine.com/api/autocomplete/inventory
+
+**Method:** GET
+
+**RBAC permission:** No RBAC restrictions (inventory attributes are publicly available)
+
+**Parameters:**
+
+- **query** _(string)_
+  Search pattern for inventory attribute names. Required. Must be 1-100 characters and contain only letters, numbers, dots, colons, or underscores.
+
+**Example request (curl):**
+
+```console
+curl --user <username>:<password> \
+  https://hub.cfengine.com/api/autocomplete/inventory?query=os
+```
+
+**Example response:**
+
+```
+HTTP 200 OK
+[
+    "OS",
+    "OS type",
+    "OS kernel",
+    "OS release"
+]
+```
+
+**Output:**
+
+Returns an array of inventory attribute names matching the search pattern, sorted alphabetically.
+
+**Responses:**
+
+| HTTP response code       | Description         |
+| ------------------------ | --------------------|
+| 200 OK                   | Successful response |
+| 422 Unprocessable Entity | Validation errors   |
+
+**Error response examples:**
+
+Missing required field:
+
+```
+HTTP 422 Unprocessable Entity
+{
+  "success": false,
+  "errors": [
+    {
+      "field": "[query]",
+      "message": "This field is missing."
+    }
+  ]
+}
+```
+
+## Security considerations
+
+The Autocomplete API bypasses database RBAC restrictions and allows users to see any class or variable name in the system. Inventory attributes are available without any restrictions.