diff --git a/application/src/main/java/org/thingsboard/server/controller/BaseController.java b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
index 0a62409891..a49b06cab8 100644
--- a/application/src/main/java/org/thingsboard/server/controller/BaseController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/BaseController.java
@@ -187,11 +187,13 @@ public abstract class BaseController {
     protected static final String DEVICE_TYPE_DESCRIPTION = "Device type as the name of the device profile";
     protected static final String ASSET_TYPE_DESCRIPTION = "Asset type";
     protected static final String EDGE_TYPE_DESCRIPTION = "A string value representing the edge type. For example, 'default'";
+    protected static final String RULE_CHAIN_TYPE_DESCRIPTION = "Rule chain type (CORE or EDGE)";
 
     protected static final String ASSET_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the asset name.";
     protected static final String DASHBOARD_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the dashboard title.";
     protected static final String RPC_TEXT_SEARCH_DESCRIPTION = "Not implemented. Leave empty.";
     protected static final String DEVICE_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the device name.";
+    protected static final String RULE_CHAIN_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the rule chain name.";
     protected static final String DEVICE_PROFILE_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the device profile name.";
     protected static final String CUSTOMER_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the customer title.";
     protected static final String EDGE_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'startsWith' filter based on the edge name.";
@@ -207,10 +209,12 @@ public abstract class BaseController {
     protected static final String ALARM_SORT_PROPERTY_ALLOWABLE_VALUES = "createdTime, startTs, endTs, type, ackTs, clearTs, severity, status";
     protected static final String EVENT_SORT_PROPERTY_ALLOWABLE_VALUES = "createdTime, id";
     protected static final String EDGE_SORT_PROPERTY_ALLOWABLE_VALUES = "createdTime, name, type, label, customerTitle";
+    protected static final String RULE_CHAIN_SORT_PROPERTY_ALLOWABLE_VALUES = "createdTime, name, root";
     protected static final String AUDIT_LOG_SORT_PROPERTY_ALLOWABLE_VALUES = "createdTime, entityType, entityName, userName, actionType, actionStatus";
     protected static final String SORT_ORDER_DESCRIPTION = "Sort order. ASC (ASCENDING) or DESC (DESCENDING)";
     protected static final String SORT_ORDER_ALLOWABLE_VALUES = "ASC, DESC";
     protected static final String RPC_STATUS_ALLOWABLE_VALUES = "QUEUED, SENT, DELIVERED, SUCCESSFUL, TIMEOUT, EXPIRED, FAILED";
+    protected static final String RULE_CHAIN_TYPES_ALLOWABLE_VALUES = "CORE, EDGE";
     protected static final String TRANSPORT_TYPE_ALLOWABLE_VALUES = "DEFAULT, MQTT, COAP, LWM2M, SNMP";
     protected static final String DEVICE_INFO_DESCRIPTION = "Device Info is an extension of the default Device object that contains information about the assigned customer name and device profile name. ";
     protected static final String ASSET_INFO_DESCRIPTION = "Asset Info is an extension of the default Asset object that contains information about the assigned customer name. ";
diff --git a/application/src/main/java/org/thingsboard/server/controller/RpcV2Controller.java b/application/src/main/java/org/thingsboard/server/controller/RpcV2Controller.java
index 62c9859d1f..391f55f4fc 100644
--- a/application/src/main/java/org/thingsboard/server/controller/RpcV2Controller.java
+++ b/application/src/main/java/org/thingsboard/server/controller/RpcV2Controller.java
@@ -91,9 +91,9 @@ public class RpcV2Controller extends AbstractRpcController {
             "In case of persistent RPC, the result of this call is 'rpcId' UUID. In case of lightweight RPC, " +
             "the result of this call is the response from device, or 504 Gateway Timeout if device is offline.";
 
-    private static final String ONE_WAY_RPC_REQUEST_DESCRIPTION = "Sends the one-way remote-procedure call (RPC) request to device. " + RPC_REQUEST_DESCRIPTION + ONE_WAY_RPC_RESULT;
+    private static final String ONE_WAY_RPC_REQUEST_DESCRIPTION = "Sends the one-way remote-procedure call (RPC) request to device. " + RPC_REQUEST_DESCRIPTION + ONE_WAY_RPC_RESULT + TENANT_AND_USER_AUTHORITY_PARAGRAPH;
 
-    private static final String TWO_WAY_RPC_REQUEST_DESCRIPTION = "Sends the two-way remote-procedure call (RPC) request to device. " + RPC_REQUEST_DESCRIPTION + TWO_WAY_RPC_RESULT;
+    private static final String TWO_WAY_RPC_REQUEST_DESCRIPTION = "Sends the two-way remote-procedure call (RPC) request to device. " + RPC_REQUEST_DESCRIPTION + TWO_WAY_RPC_RESULT + TENANT_AND_USER_AUTHORITY_PARAGRAPH;
 
     @ApiOperation(value = "Send one-way RPC request", notes = ONE_WAY_RPC_REQUEST_DESCRIPTION)
     @ApiResponses(value = {
@@ -131,7 +131,7 @@ public class RpcV2Controller extends AbstractRpcController {
         return handleDeviceRPCRequest(false, new DeviceId(UUID.fromString(deviceIdStr)), requestBody, HttpStatus.GATEWAY_TIMEOUT, HttpStatus.GATEWAY_TIMEOUT);
     }
 
-    @ApiOperation(value = "Get persistent RPC request", notes = "Get information about the status of the RPC call.")
+    @ApiOperation(value = "Get persistent RPC request", notes = "Get information about the status of the RPC call." + TENANT_AND_USER_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/persistent/{rpcId}", method = RequestMethod.GET)
     @ResponseBody
@@ -147,7 +147,7 @@ public class RpcV2Controller extends AbstractRpcController {
         }
     }
 
-    @ApiOperation(value = "Get persistent RPC requests", notes = "Allows to query RPC calls for specific device using pagination.")
+    @ApiOperation(value = "Get persistent RPC requests", notes = "Allows to query RPC calls for specific device using pagination." + TENANT_AND_USER_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
     @RequestMapping(value = "/persistent/device/{deviceId}", method = RequestMethod.GET)
     @ResponseBody
@@ -177,7 +177,7 @@ public class RpcV2Controller extends AbstractRpcController {
         }
     }
 
-    @ApiOperation(value = "Delete persistent RPC", notes = "Deletes the persistent RPC request.")
+    @ApiOperation(value = "Delete persistent RPC", notes = "Deletes the persistent RPC request." + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/persistent/{rpcId}", method = RequestMethod.DELETE)
     @ResponseBody
diff --git a/application/src/main/java/org/thingsboard/server/controller/RuleChainController.java b/application/src/main/java/org/thingsboard/server/controller/RuleChainController.java
index 40cc46ffa1..21a2d8afb2 100644
--- a/application/src/main/java/org/thingsboard/server/controller/RuleChainController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/RuleChainController.java
@@ -21,6 +21,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiParam;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -95,6 +96,25 @@ public class RuleChainController extends BaseController {
     private static final ObjectMapper objectMapper = new ObjectMapper();
     public static final int TIMEOUT = 20;
 
+    private static final String RULE_CHAIN_DESCRIPTION = "The rule chain object is lightweight and contains general information about the rule chain. " +
+            "List of rule nodes and their connection is stored in a separate 'metadata' object.";
+    private static final String RULE_CHAIN_METADATA_DESCRIPTION = "The metadata object contains information about the rule nodes and their connections.";
+    private static final String TEST_JS_FUNCTION = "Execute the JavaScript function and return the result. The format of request: \n\n"
+            + MARKDOWN_CODE_BLOCK_START
+            + "{\n" +
+            "  \"script\": \"Your JS Function as String\",\n" +
+            "  \"scriptType\": \"One of: update, generate, filter, switch, json, string\",\n" +
+            "  \"argNames\": [\"msg\", \"metadata\", \"type\"],\n" +
+            "  \"msg\": \"{\\\"temperature\\\": 42}\", \n" +
+            "  \"metadata\": {\n" +
+            "    \"deviceName\": \"Device A\",\n" +
+            "    \"deviceType\": \"Thermometer\"\n" +
+            "  },\n" +
+            "  \"msgType\": \"POST_TELEMETRY_REQUEST\"\n" +
+            "}"
+            + MARKDOWN_CODE_BLOCK_END
+            + "\n\n Expected result JSON contains \"output\" and \"error\".";
+
     @Autowired
     private InstallScripts installScripts;
 
@@ -110,10 +130,14 @@ public class RuleChainController extends BaseController {
     @Value("${actors.rule.chain.debug_mode_rate_limits_per_tenant.enabled}")
     private boolean debugPerTenantEnabled;
 
+    @ApiOperation(value = "Get Rule Chain (getRuleChainById)",
+            notes = "Fetch the Rule Chain object based on the provided Rule Chain Id. " + RULE_CHAIN_DESCRIPTION + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/{ruleChainId}", method = RequestMethod.GET)
     @ResponseBody
-    public RuleChain getRuleChainById(@PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
+    public RuleChain getRuleChainById(
+            @ApiParam(value = RULE_CHAIN_ID_PARAM_DESCRIPTION)
+            @PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
         checkParameter(RULE_CHAIN_ID, strRuleChainId);
         try {
             RuleChainId ruleChainId = new RuleChainId(toUUID(strRuleChainId));
@@ -123,10 +147,14 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Get Rule Chain (getRuleChainById)",
+            notes = "Fetch the Rule Chain Metadata object based on the provided Rule Chain Id. " + RULE_CHAIN_METADATA_DESCRIPTION + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/{ruleChainId}/metadata", method = RequestMethod.GET)
     @ResponseBody
-    public RuleChainMetaData getRuleChainMetaData(@PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
+    public RuleChainMetaData getRuleChainMetaData(
+            @ApiParam(value = RULE_CHAIN_ID_PARAM_DESCRIPTION)
+            @PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
         checkParameter(RULE_CHAIN_ID, strRuleChainId);
         try {
             RuleChainId ruleChainId = new RuleChainId(toUUID(strRuleChainId));
@@ -137,11 +165,18 @@ public class RuleChainController extends BaseController {
         }
     }
 
-
+    @ApiOperation(value = "Create Or Update Rule Chain (saveRuleChain)",
+            notes = "Create or update the Rule Chain. When creating Rule Chain, platform generates Rule Chain Id as [time-based UUID](https://en.wikipedia.org/wiki/Universally_unique_identifier#Version_1_(date-time_and_MAC_address). " +
+                    "The newly created Rule Chain Id will be present in the response. " +
+                    "Specify existing Rule Chain id to update the rule chain. " +
+                    "Referencing non-existing rule chain Id will cause 'Not Found' error." +
+                    "\n\n" + RULE_CHAIN_DESCRIPTION)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain", method = RequestMethod.POST)
     @ResponseBody
-    public RuleChain saveRuleChain(@RequestBody RuleChain ruleChain) throws ThingsboardException {
+    public RuleChain saveRuleChain(
+            @ApiParam(value = "A JSON value representing the rule chain.")
+            @RequestBody RuleChain ruleChain) throws ThingsboardException {
         try {
             boolean created = ruleChain.getId() == null;
             ruleChain.setTenantId(getCurrentUser().getTenantId());
@@ -175,10 +210,15 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Create Default Rule Chain",
+            notes = "Create rule chain from template, based on the specified name in the request. " +
+                    "Creates the rule chain based on the template that is used to create root rule chain. " + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/device/default", method = RequestMethod.POST)
     @ResponseBody
-    public RuleChain saveRuleChain(@RequestBody DefaultRuleChainCreateRequest request) throws ThingsboardException {
+    public RuleChain saveRuleChain(
+            @ApiParam(value = "A JSON value representing the request.")
+            @RequestBody DefaultRuleChainCreateRequest request) throws ThingsboardException {
         try {
             checkNotNull(request);
             checkParameter(request.getName(), "name");
@@ -198,10 +238,14 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Set Root Rule Chain (setRootRuleChain)",
+            notes = "Makes the rule chain to be root rule chain. Updates previous root rule chain as well. " + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/{ruleChainId}/root", method = RequestMethod.POST)
     @ResponseBody
-    public RuleChain setRootRuleChain(@PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
+    public RuleChain setRootRuleChain(
+            @ApiParam(value = RULE_CHAIN_ID_PARAM_DESCRIPTION)
+            @PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
         checkParameter(RULE_CHAIN_ID, strRuleChainId);
         try {
             RuleChainId ruleChainId = new RuleChainId(toUUID(strRuleChainId));
@@ -237,10 +281,14 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Update Rule Chain Metadata",
+            notes = "Updates the rule chain metadata. " + RULE_CHAIN_METADATA_DESCRIPTION + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/metadata", method = RequestMethod.POST)
     @ResponseBody
-    public RuleChainMetaData saveRuleChainMetaData(@RequestBody RuleChainMetaData ruleChainMetaData) throws ThingsboardException {
+    public RuleChainMetaData saveRuleChainMetaData(
+            @ApiParam(value = "A JSON value representing the rule chain metadata.")
+            @RequestBody RuleChainMetaData ruleChainMetaData) throws ThingsboardException {
         try {
             TenantId tenantId = getTenantId();
             if (debugPerTenantEnabled) {
@@ -278,15 +326,24 @@ public class RuleChainController extends BaseController {
         }
     }
 
+
+    @ApiOperation(value = "Get Rule Chains (getRuleChains)",
+            notes = "Returns a page of Rule Chains owned by tenant. " + RULE_CHAIN_DESCRIPTION + PAGE_DATA_PARAMETERS)
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChains", params = {"pageSize", "page"}, method = RequestMethod.GET)
     @ResponseBody
     public PageData<RuleChain> getRuleChains(
+            @ApiParam(value = PAGE_SIZE_DESCRIPTION, required = true)
             @RequestParam int pageSize,
+            @ApiParam(value = PAGE_NUMBER_DESCRIPTION, required = true)
             @RequestParam int page,
+            @ApiParam(value = RULE_CHAIN_TYPE_DESCRIPTION, allowableValues = RULE_CHAIN_TYPES_ALLOWABLE_VALUES)
             @RequestParam(value = "type", required = false) String typeStr,
+            @ApiParam(value = RULE_CHAIN_TEXT_SEARCH_DESCRIPTION)
             @RequestParam(required = false) String textSearch,
+            @ApiParam(value = SORT_PROPERTY_DESCRIPTION, allowableValues = RULE_CHAIN_SORT_PROPERTY_ALLOWABLE_VALUES)
             @RequestParam(required = false) String sortProperty,
+            @ApiParam(value = SORT_ORDER_DESCRIPTION, allowableValues = SORT_ORDER_ALLOWABLE_VALUES)
             @RequestParam(required = false) String sortOrder) throws ThingsboardException {
         try {
             TenantId tenantId = getCurrentUser().getTenantId();
@@ -301,10 +358,14 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Delete rule chain (deleteRuleChain)",
+            notes = "Deletes the rule chain. Referencing non-existing rule chain Id will cause an error. Referencing rule chain that is used in the device profiles will cause an error.")
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/{ruleChainId}", method = RequestMethod.DELETE)
     @ResponseStatus(value = HttpStatus.OK)
-    public void deleteRuleChain(@PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
+    public void deleteRuleChain(
+            @ApiParam(value = RULE_CHAIN_ID_PARAM_DESCRIPTION)
+            @PathVariable(RULE_CHAIN_ID) String strRuleChainId) throws ThingsboardException {
         checkParameter(RULE_CHAIN_ID, strRuleChainId);
         try {
             RuleChainId ruleChainId = new RuleChainId(toUUID(strRuleChainId));
@@ -347,10 +408,15 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Get latest input message (getLatestRuleNodeDebugInput)",
+            notes = "Gets the input message from the debug events for specified Rule Chain Id. " +
+                    "Referencing non-existing rule chain Id will cause an error. ")
     @PreAuthorize("hasAnyAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleNode/{ruleNodeId}/debugIn", method = RequestMethod.GET)
     @ResponseBody
-    public JsonNode getLatestRuleNodeDebugInput(@PathVariable(RULE_NODE_ID) String strRuleNodeId) throws ThingsboardException {
+    public JsonNode getLatestRuleNodeDebugInput(
+            @ApiParam(value = RULE_CHAIN_ID_PARAM_DESCRIPTION)
+            @PathVariable(RULE_NODE_ID) String strRuleNodeId) throws ThingsboardException {
         checkParameter(RULE_NODE_ID, strRuleNodeId);
         try {
             RuleNodeId ruleNodeId = new RuleNodeId(toUUID(strRuleNodeId));
@@ -373,10 +439,15 @@ public class RuleChainController extends BaseController {
         }
     }
 
+
+    @ApiOperation(value = "Test JavaScript function",
+            notes = TEST_JS_FUNCTION + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChain/testScript", method = RequestMethod.POST)
     @ResponseBody
-    public JsonNode testScript(@RequestBody JsonNode inputParams) throws ThingsboardException {
+    public JsonNode testScript(
+            @ApiParam(value = "Test JS request. See API call description above.")
+            @RequestBody JsonNode inputParams) throws ThingsboardException {
         try {
             String script = inputParams.get("script").asText();
             String scriptType = inputParams.get("scriptType").asText();
@@ -436,10 +507,13 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Export Rule Chains", notes = "Exports all tenant rule chains as one JSON." + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChains/export", params = {"limit"}, method = RequestMethod.GET)
     @ResponseBody
-    public RuleChainData exportRuleChains(@RequestParam("limit") int limit) throws ThingsboardException {
+    public RuleChainData exportRuleChains(
+            @ApiParam(value = "A limit of rule chains to export.", required = true)
+            @RequestParam("limit") int limit) throws ThingsboardException {
         try {
             TenantId tenantId = getCurrentUser().getTenantId();
             PageLink pageLink = new PageLink(limit);
@@ -449,10 +523,15 @@ public class RuleChainController extends BaseController {
         }
     }
 
+    @ApiOperation(value = "Import Rule Chains", notes = "Imports all tenant rule chains as one JSON." + TENANT_AUTHORITY_PARAGRAPH)
     @PreAuthorize("hasAuthority('TENANT_ADMIN')")
     @RequestMapping(value = "/ruleChains/import", method = RequestMethod.POST)
     @ResponseBody
-    public void importRuleChains(@RequestBody RuleChainData ruleChainData, @RequestParam(required = false, defaultValue = "false") boolean overwrite) throws ThingsboardException {
+    public void importRuleChains(
+            @ApiParam(value = "A JSON value representing the rule chains.")
+            @RequestBody RuleChainData ruleChainData,
+            @ApiParam(value = "Enables overwrite for existing rule chains with the same name.")
+            @RequestParam(required = false, defaultValue = "false") boolean overwrite) throws ThingsboardException {
         try {
             TenantId tenantId = getCurrentUser().getTenantId();
             List<RuleChainImportResult> importResults = ruleChainService.importTenantRuleChains(tenantId, ruleChainData, RuleChainType.CORE, overwrite);
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/DefaultRuleChainCreateRequest.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/DefaultRuleChainCreateRequest.java
index cbabe39938..e9a7bba35d 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/DefaultRuleChainCreateRequest.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/DefaultRuleChainCreateRequest.java
@@ -15,17 +15,21 @@
  */
 package org.thingsboard.server.common.data.rule;
 
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 
 import java.io.Serializable;
 
+@ApiModel
 @Data
 @Slf4j
 public class DefaultRuleChainCreateRequest implements Serializable {
 
     private static final long serialVersionUID = 5600333716030561537L;
 
+    @ApiModelProperty(position = 1, required = true, value = "Name of the new rule chain", example = "Root Rule Chain")
     private String name;
 
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/NodeConnectionInfo.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/NodeConnectionInfo.java
index 119af4ce4f..981fbb85dd 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/NodeConnectionInfo.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/NodeConnectionInfo.java
@@ -15,14 +15,20 @@
  */
 package org.thingsboard.server.common.data.rule;
 
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 
 /**
  * Created by ashvayka on 21.03.18.
  */
+@ApiModel
 @Data
 public class NodeConnectionInfo {
+    @ApiModelProperty(position = 1, required = true, value = "Index of rule node in the 'nodes' array of the RuleChainMetaData. Indicates the 'from' part of the connection.")
     private int fromIndex;
+    @ApiModelProperty(position = 2, required = true, value = "Index of rule node in the 'nodes' array of the RuleChainMetaData. Indicates the 'to' part of the connection.")
     private int toIndex;
+    @ApiModelProperty(position = 3, required = true, value = "Type of the relation. Typically indicated the result of processing by the 'from' rule node. For example, 'Success' or 'Failure'")
     private String type;
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChain.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChain.java
index da84f15427..6cfa13a867 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChain.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChain.java
@@ -17,6 +17,8 @@ package org.thingsboard.server.common.data.rule;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.databind.JsonNode;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.extern.slf4j.Slf4j;
@@ -28,6 +30,7 @@ import org.thingsboard.server.common.data.id.RuleNodeId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.validation.NoXss;
 
+@ApiModel
 @Data
 @EqualsAndHashCode(callSuper = true)
 @Slf4j
@@ -35,13 +38,20 @@ public class RuleChain extends SearchTextBasedWithAdditionalInfo<RuleChainId> im
 
     private static final long serialVersionUID = -5656679015121935465L;
 
+    @ApiModelProperty(position = 3, required = true, value = "JSON object with Tenant Id.", readOnly = true)
     private TenantId tenantId;
     @NoXss
+    @ApiModelProperty(position = 4, required = true, value = "Rule Chain name", example = "Humidity data processing")
     private String name;
+    @ApiModelProperty(position = 5, value = "Rule Chain type. 'EDGE' rule chains are processing messages on the edge devices only.", example = "A4B72CCDFF33")
     private RuleChainType type;
+    @ApiModelProperty(position = 6, value = "JSON object with Rule Chain Id. Pointer to the first rule node that should receive all messages pushed to this rule chain.")
     private RuleNodeId firstRuleNodeId;
+    @ApiModelProperty(position = 7, value = "Indicates root rule chain. The root rule chain process messages from all devices and entities by default. User may configure default rule chain per device profile.")
     private boolean root;
+    @ApiModelProperty(position = 8, value = "Reserved for future usage.")
     private boolean debugMode;
+    @ApiModelProperty(position = 9, value = "Reserved for future usage. The actual list of rule nodes and their relations is stored in the database separately.")
     private transient JsonNode configuration;
 
     @JsonIgnore
@@ -75,6 +85,21 @@ public class RuleChain extends SearchTextBasedWithAdditionalInfo<RuleChainId> im
         return name;
     }
 
+    @ApiModelProperty(position = 1, value = "JSON object with the Rule Chain Id. " +
+            "Specify this field to update the Rule Chain. " +
+            "Referencing non-existing Rule Chain Id will cause error. " +
+            "Omit this field to create new rule chain." )
+    @Override
+    public RuleChainId getId() {
+        return super.getId();
+    }
+
+    @ApiModelProperty(position = 2, value = "Timestamp of the rule chain creation, in milliseconds", example = "1609459200000", readOnly = true)
+    @Override
+    public long getCreatedTime() {
+        return super.getCreatedTime();
+    }
+
     public JsonNode getConfiguration() {
         return SearchTextBasedWithAdditionalInfo.getJson(() -> configuration, () -> configurationBytes);
     }
@@ -82,4 +107,5 @@ public class RuleChain extends SearchTextBasedWithAdditionalInfo<RuleChainId> im
     public void setConfiguration(JsonNode data) {
         setJson(data, json -> this.configuration = json, bytes -> this.configurationBytes = bytes);
     }
+
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainConnectionInfo.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainConnectionInfo.java
index 6b1646b8f1..68efc565be 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainConnectionInfo.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainConnectionInfo.java
@@ -16,16 +16,23 @@
 package org.thingsboard.server.common.data.rule;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import org.thingsboard.server.common.data.id.RuleChainId;
 
 /**
  * Created by ashvayka on 21.03.18.
  */
+@ApiModel
 @Data
 public class RuleChainConnectionInfo {
+    @ApiModelProperty(position = 1, required = true, value = "Index of rule node in the 'nodes' array of the RuleChainMetaData. Indicates the 'from' part of the connection.")
     private int fromIndex;
+    @ApiModelProperty(position = 2, required = true, value = "JSON object with the Rule Chain Id.")
     private RuleChainId targetRuleChainId;
+    @ApiModelProperty(position = 3, required = true, value = "JSON object with the additional information about the connection.")
     private JsonNode additionalInfo;
+    @ApiModelProperty(position = 4, required = true, value = "Type of the relation. Typically indicated the result of processing by the 'from' rule node. For example, 'Success' or 'Failure'")
     private String type;
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainData.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainData.java
index 912120e0ad..8df7f24eba 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainData.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainData.java
@@ -15,13 +15,18 @@
  */
 package org.thingsboard.server.common.data.rule;
 
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 
 import java.util.List;
 
+@ApiModel
 @Data
 public class RuleChainData {
 
+    @ApiModelProperty(position = 1, required = true, value = "List of the Rule Chain objects.", readOnly = true)
     List<RuleChain> ruleChains;
+    @ApiModelProperty(position = 2, required = true, value = "List of the Rule Chain metadata objects.", readOnly = true)
     List<RuleChainMetaData> metadata;
 }
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainMetaData.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainMetaData.java
index 33a4aaa6bb..0b069d7889 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainMetaData.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChainMetaData.java
@@ -16,6 +16,8 @@
 package org.thingsboard.server.common.data.rule;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import org.thingsboard.server.common.data.id.RuleChainId;
 
@@ -25,17 +27,23 @@ import java.util.List;
 /**
  * Created by igor on 3/13/18.
  */
+@ApiModel
 @Data
 public class RuleChainMetaData {
 
+    @ApiModelProperty(position = 1, required = true, value = "JSON object with Rule Chain Id.", readOnly = true)
     private RuleChainId ruleChainId;
 
+    @ApiModelProperty(position = 2, required = true, value = "Index of the first rule node in the 'nodes' list")
     private Integer firstNodeIndex;
 
+    @ApiModelProperty(position = 3, required = true, value = "List of rule node JSON objects")
     private List<RuleNode> nodes;
 
+    @ApiModelProperty(position = 4, required = true, value = "List of JSON objects that represent connections between rule nodes")
     private List<NodeConnectionInfo> connections;
 
+    @ApiModelProperty(position = 5, required = true, value = "List of JSON objects that represent connections between rule nodes and other rule chains.")
     private List<RuleChainConnectionInfo> ruleChainConnections;
 
     public void addConnectionInfo(int fromIndex, int toIndex, String type) {
diff --git a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleNode.java b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleNode.java
index 6d88ad6adc..a44595dcfa 100644
--- a/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleNode.java
+++ b/common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleNode.java
@@ -17,6 +17,8 @@ package org.thingsboard.server.common.data.rule;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.databind.JsonNode;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.extern.slf4j.Slf4j;
@@ -25,6 +27,7 @@ import org.thingsboard.server.common.data.SearchTextBasedWithAdditionalInfo;
 import org.thingsboard.server.common.data.id.RuleChainId;
 import org.thingsboard.server.common.data.id.RuleNodeId;
 
+@ApiModel
 @Data
 @EqualsAndHashCode(callSuper = true)
 @Slf4j
@@ -32,10 +35,15 @@ public class RuleNode extends SearchTextBasedWithAdditionalInfo<RuleNodeId> impl
 
     private static final long serialVersionUID = -5656679015121235465L;
 
+    @ApiModelProperty(position = 3, value = "JSON object with the Rule Chain Id. ", readOnly = true)
     private RuleChainId ruleChainId;
+    @ApiModelProperty(position = 4, value = "Full Java Class Name of the rule node implementation. ", example = "com.mycompany.iot.rule.engine.ProcessingNode")
     private String type;
+    @ApiModelProperty(position = 5, value = "User defined name of the rule node. Used on UI and for logging. ", example = "Process sensor reading")
     private String name;
+    @ApiModelProperty(position = 6, value = "Enable/disable debug. ", example = "false")
     private boolean debugMode;
+    @ApiModelProperty(position = 7, value = "JSON with the rule node configuration. Structure depends on the rule node implementation.", dataType = "com.fasterxml.jackson.databind.JsonNode")
     private transient JsonNode configuration;
     @JsonIgnore
     private byte[] configurationBytes;
@@ -75,4 +83,25 @@ public class RuleNode extends SearchTextBasedWithAdditionalInfo<RuleNodeId> impl
         setJson(data, json -> this.configuration = json, bytes -> this.configurationBytes = bytes);
     }
 
+    @ApiModelProperty(position = 1, value = "JSON object with the Rule Node Id. " +
+            "Specify this field to update the Rule Node. " +
+            "Referencing non-existing Rule Node Id will cause error. " +
+            "Omit this field to create new rule node." )
+    @Override
+    public RuleNodeId getId() {
+        return super.getId();
+    }
+
+    @ApiModelProperty(position = 2, value = "Timestamp of the rule node creation, in milliseconds", example = "1609459200000", readOnly = true)
+    @Override
+    public long getCreatedTime() {
+        return super.getCreatedTime();
+    }
+
+    @ApiModelProperty(position = 8, value = "Additional parameters of the rule node. Contains 'layoutX' and 'layoutY' properties for visualization.", dataType = "com.fasterxml.jackson.databind.JsonNode")
+    @Override
+    public JsonNode getAdditionalInfo() {
+        return super.getAdditionalInfo();
+    }
+
 }