diff --git a/apidom/packages/apidom-ast/src/nodes/yaml/YamlScalar.ts b/apidom/packages/apidom-ast/src/nodes/yaml/YamlScalar.ts
index 1fff84355a..8d479cc7ea 100644
--- a/apidom/packages/apidom-ast/src/nodes/yaml/YamlScalar.ts
+++ b/apidom/packages/apidom-ast/src/nodes/yaml/YamlScalar.ts
@@ -1,6 +1,7 @@
 import stampit from 'stampit';
 
 import YamlNode from './YamlNode';
+import { YamlStyle } from './YamlStyle';
 
 interface YamlScalar extends YamlNode {
   type: 'scalar';
@@ -23,6 +24,10 @@ const YamlScalar: stampit.Stamp<YamlScalar> = stampit(YamlNode, {
   methods: {
     // @ts-ignore
     get content() {
+      if (this.style === YamlStyle.SingleQuoted) {
+        // @ts-ignore
+        return this.text.replace(/^'/, '').replace(/'$/, '');
+      }
       // @ts-ignore
       return this.text;
     },
diff --git a/apidom/packages/apidom-ast/src/transformers/tree-sitter-yaml.ts b/apidom/packages/apidom-ast/src/transformers/tree-sitter-yaml.ts
index 3b82816a23..ca5d5b0f3b 100644
--- a/apidom/packages/apidom-ast/src/transformers/tree-sitter-yaml.ts
+++ b/apidom/packages/apidom-ast/src/transformers/tree-sitter-yaml.ts
@@ -428,7 +428,7 @@ const Visitor = stampit({
         const anchor = kindNodeToYamlAnchor(node);
 
         return YamlScalar({
-          content: node.text,
+          text: node.text,
           anchor,
           tag,
           position,
@@ -445,7 +445,7 @@ const Visitor = stampit({
         const anchor = kindNodeToYamlAnchor(node);
 
         return YamlScalar({
-          content: node.text,
+          text: node.text,
           anchor,
           tag,
           position,
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/ServersVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/ServersVisitor.ts
index f6f099ac5c..523f3c28ad 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/ServersVisitor.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/ServersVisitor.ts
@@ -15,7 +15,6 @@ const ServersVisitor = stampit(ValueVisitor, SpecificationVisitor, {
     array(arrayNode) {
       arrayNode.items.forEach((item: JsonNode) => {
         if (isServerObject({}, item)) {
-          console.dir('server object');
           const element = this.nodeToElement(['document', 'objects', 'Server'], item);
           this.element.push(element);
         } else {
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts
index 0fcccdbc7c..7bb6f7de15 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts
@@ -9,7 +9,7 @@ const CallbacksVisitor = stampit(ValueVisitor, MapJsonObjectVisitor, {
   props: {
     specPath: (node: JsonNode) => {
       // eslint-disable-next-line no-nested-ternary
-      return isReferenceObject(node)
+      return isReferenceObject({}, node)
         ? ['document', 'objects', 'Reference']
         : isJsonObject(node)
         ? ['document', 'objects', 'Callback']
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/paths/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/paths/index.ts
index 21a5268b8c..9e70726728 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/paths/index.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-json/src/parser/visitors/open-api-3-1/paths/index.ts
@@ -1,11 +1,12 @@
 import stampit from 'stampit';
-import { always } from 'ramda';
+import { test, always } from 'ramda';
 
-import MapJsonObjectVisitor from '../../generics/MapJsonObjectVisitor';
+import PatternedFieldsJsonObjectVisitor from '../../generics/PatternedFieldsJsonObjectVisitor';
 import { ValueVisitor } from '../../generics';
 
-const PathsVisitor = stampit(ValueVisitor, MapJsonObjectVisitor, {
+const PathsVisitor = stampit(ValueVisitor, PatternedFieldsJsonObjectVisitor, {
   props: {
+    fieldPatternPredicate: test(/^\/(?<path>.*)$/),
     specPath: always(['document', 'objects', 'PathItem']),
     canSupportSpecificationExtensions: true,
   },
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/predicates.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/predicates.ts
index 013c76d962..812717c17e 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/predicates.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/predicates.ts
@@ -30,3 +30,27 @@ export const isServerObject = curry((options, node) => {
   }
   return hasKeys(['url'], node.content);
 });
+
+// isParameterObject :: Options -> JsonObject -> Boolean
+export const isParameterObject = curry((options, node) => {
+  if (!isYamlMapping(node)) {
+    return false;
+  }
+  return hasKeys(['name', 'in'], node.content);
+});
+
+// isReferenceObject :: Options -> JsonObject -> Boolean
+export const isReferenceObject = curry((options, node) => {
+  if (!isYamlMapping(node)) {
+    return false;
+  }
+  return hasKeys(['$ref'], node.content);
+});
+
+// isRequestBodyObject :: Options -> JsonObject -> Boolean
+export const isRequestBodyObject = curry((options, node) => {
+  if (!isYamlMapping(node)) {
+    return false;
+  }
+  return hasKeys(['content'], node.content);
+});
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/specification.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/specification.ts
index b88b421437..dd88fd84da 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/specification.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/specification.ts
@@ -34,6 +34,26 @@ import SecurityRequirementVisitor from './visitors/open-api-3-1/security-require
 import ComponentsVisitor from './visitors/open-api-3-1/components';
 import SchemasVisitor from './visitors/open-api-3-1/components/SchemasVisitor';
 import SchemaVisitor from './visitors/open-api-3-1/schema';
+import PathsVisitor from './visitors/open-api-3-1/paths';
+import PathItemVisitor from './visitors/open-api-3-1/path-item';
+import PathItem$RefVisitor from './visitors/open-api-3-1/path-item/$RefVisitor';
+import PathItemSummaryVisitor from './visitors/open-api-3-1/path-item/SummaryVisitor';
+import PathItemDescriptionVisitor from './visitors/open-api-3-1/path-item/DescriptionVisitor';
+import ParametersVisitor from './visitors/open-api-3-1/ParametersVisitor';
+import OperationVisitor from './visitors/open-api-3-1/operation';
+import OperationTagsVisitor from './visitors/open-api-3-1/operation/TagsVisitor';
+import OperationSummaryVisitor from './visitors/open-api-3-1/operation/SummaryVisitor';
+import OperationDescriptionVisitor from './visitors/open-api-3-1/operation/DescriptionVisitor';
+import OperationOperationIdVisitor from './visitors/open-api-3-1/operation/OperationIdVisitor';
+import OperationDeprecatedVisitor from './visitors/open-api-3-1/operation/DeprecatedVisitor';
+import OperationRequestBodyVisitor from './visitors/open-api-3-1/operation/RequestBodyVisitor';
+import OperationCallbacksVisitor from './visitors/open-api-3-1/operation/CallbacksVisitor';
+import ExternalDocumentationVisitor from './visitors/open-api-3-1/external-documentation';
+import ExternalDocumentationDescriptionVisitor from './visitors/open-api-3-1/external-documentation/DescriptionVisitor';
+import ExternalDocumentationUrlVisitor from './visitors/open-api-3-1/external-documentation/UrlVisitor';
+import RequestBodyVisitor from './visitors/open-api-3-1/request-body';
+import ReferenceVisitor from './visitors/open-api-3-1/reference';
+import CallbackVisitor from './visitors/open-api-3-1/callback';
 
 /**
  * Specification object allows us to have complete control over visitors
@@ -68,6 +88,9 @@ const specification = {
               $ref: '#/visitors/document/objects/Components',
             },
             security: SecurityVisitor,
+            paths: {
+              $ref: '#/visitors/document/objects/Paths',
+            },
           },
         },
         Info: {
@@ -127,6 +150,83 @@ const specification = {
             schemas: SchemasVisitor,
           },
         },
+        Paths: {
+          $visitor: PathsVisitor,
+        },
+        PathItem: {
+          $visitor: PathItemVisitor,
+          fixedFields: {
+            $ref: PathItem$RefVisitor,
+            summary: PathItemSummaryVisitor,
+            description: PathItemDescriptionVisitor,
+            get: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            put: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            post: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            delete: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            options: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            head: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            patch: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            trace: {
+              $ref: '#/visitors/document/objects/Operation',
+            },
+            servers: ServersVisitor,
+            parameters: ParametersVisitor,
+          },
+        },
+        Operation: {
+          $visitor: OperationVisitor,
+          fixedFields: {
+            tags: OperationTagsVisitor,
+            summary: OperationSummaryVisitor,
+            description: OperationDescriptionVisitor,
+            externalDocs: {
+              $ref: '#/visitors/document/objects/ExternalDocumentation',
+            },
+            operationId: OperationOperationIdVisitor,
+            parameters: ParametersVisitor,
+            requestBody: OperationRequestBodyVisitor,
+            // responses: {
+            //   $ref: '#/visitors/document/objects/Responses',
+            // },
+            callbacks: OperationCallbacksVisitor,
+            deprecated: OperationDeprecatedVisitor,
+            security: SecurityVisitor,
+            servers: ServersVisitor,
+          },
+        },
+        ExternalDocumentation: {
+          $visitor: ExternalDocumentationVisitor,
+          fixedFields: {
+            description: ExternalDocumentationDescriptionVisitor,
+            url: ExternalDocumentationUrlVisitor,
+          },
+        },
+        RequestBody: {
+          $visitor: RequestBodyVisitor,
+          fixedFields: {},
+        },
+        Callback: {
+          $visitor: CallbackVisitor,
+          fixedFields: {},
+        },
+        Reference: {
+          $visitor: ReferenceVisitor,
+          fixedFields: {},
+        },
         SecurityRequirement: {
           $visitor: SecurityRequirementVisitor,
         },
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/AlternatingVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/AlternatingVisitor.ts
new file mode 100644
index 0000000000..50be6ed91c
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/AlternatingVisitor.ts
@@ -0,0 +1,30 @@
+import stampit from 'stampit';
+import { ifElse, always, Pred } from 'ramda';
+import { dispatch, stubUndefined } from 'ramda-adjunct';
+import { YamlMapping } from 'apidom-ast';
+
+import { BREAK } from '..';
+import SpecificationVisitor from '../SpecificationVisitor';
+
+const AlternatingVisitor = stampit(SpecificationVisitor, {
+  props: {
+    alternator: [],
+  },
+  methods: {
+    mapping(mappingNode: YamlMapping) {
+      const functions = this.alternator.map(
+        ({ predicate, specPath }: { predicate: Pred; specPath: string[] }) =>
+          ifElse(predicate, always(specPath), stubUndefined),
+      );
+      const specPath = dispatch(functions)(mappingNode);
+
+      this.element = this.nodeToElement(specPath, mappingNode);
+
+      this.maybeAddSourceMap(mappingNode, this.element);
+
+      return BREAK;
+    },
+  },
+});
+
+export default AlternatingVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/FixedFieldsYamlMappingVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/FixedFieldsYamlMappingVisitor.ts
index a08d38932f..1d12823c90 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/FixedFieldsYamlMappingVisitor.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/FixedFieldsYamlMappingVisitor.ts
@@ -45,7 +45,7 @@ const FixedFieldsYamlMappingVisitor = stampit(SpecificationVisitor, {
         const visitor = this.retrieveVisitorInstance([...specPath, 'fixedFields', keyName]);
         const keyElement = new this.namespace.elements.String(keyName);
 
-        visit(keyValuePairNode.value, visitor);
+        visit(valueNode, visitor);
 
         const memberElement = this.maybeAddSourceMap(
           keyValuePairNode,
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/index.ts
index 9a55225e49..448bbdba91 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/index.ts
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/generics/index.ts
@@ -17,7 +17,7 @@ import SpecificationVisitor from '../SpecificationVisitor';
 export const ScalarVisitor = stampit(SpecificationVisitor, {
   methods: {
     scalar(scalarNode: YamlScalar): typeof BREAK {
-      const stringElement = new this.namespace.elements.String(scalarNode.content);
+      const stringElement = this.namespace.toElement(scalarNode.content);
       this.element = this.maybeAddSourceMap(scalarNode, stringElement);
       return BREAK;
     },
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/ParametersVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/ParametersVisitor.ts
new file mode 100644
index 0000000000..a070bbe526
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/ParametersVisitor.ts
@@ -0,0 +1,34 @@
+import stampit from 'stampit';
+import { YamlSequence } from 'apidom-ast';
+
+import { BREAK } from '..';
+import SpecificationVisitor from '../SpecificationVisitor';
+import { isParameterObject, isReferenceObject } from '../../predicates';
+import { KindVisitor } from '../generics';
+
+const ParametersVisitor = stampit(KindVisitor, SpecificationVisitor, {
+  init() {
+    this.element = new this.namespace.elements.Array();
+    this.element.classes.push('parameters');
+  },
+  methods: {
+    sequence(sequenceNode: YamlSequence) {
+      sequenceNode.content.forEach((item): void => {
+        if (isParameterObject({}, item)) {
+          this.element.push(new this.namespace.elements.Parameter());
+        } else if (isReferenceObject({}, item)) {
+          this.element.push(new this.namespace.elements.Reference());
+        } else {
+          const element = this.nodeToElement(['kind'], item);
+          this.element.push(element);
+        }
+      });
+
+      this.maybeAddSourceMap(sequenceNode, this.element);
+
+      return BREAK;
+    },
+  },
+});
+
+export default ParametersVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/callback/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/callback/index.ts
new file mode 100644
index 0000000000..422dc4b6d0
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/callback/index.ts
@@ -0,0 +1,16 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import { KindVisitor } from '../../generics';
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+
+const CallbackVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'Callback']),
+  },
+  init() {
+    this.element = new this.namespace.elements.Callback();
+  },
+});
+
+export default CallbackVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/DescriptionVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/DescriptionVisitor.ts
new file mode 100644
index 0000000000..5a01b32367
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/DescriptionVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const DescriptionVisitor = stampit(KindVisitor);
+
+export default DescriptionVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/UrlVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/UrlVisitor.ts
new file mode 100644
index 0000000000..6879e8a7af
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/UrlVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const UrlVisitor = stampit(KindVisitor);
+
+export default UrlVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/index.ts
new file mode 100644
index 0000000000..0ea27459d2
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/external-documentation/index.ts
@@ -0,0 +1,16 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import { KindVisitor } from '../../generics';
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+
+const ExternalDocumentationVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'ExternalDocumentation']),
+  },
+  init() {
+    this.element = new this.namespace.elements.ExternalDocumentation();
+  },
+});
+
+export default ExternalDocumentationVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts
new file mode 100644
index 0000000000..81da0285b3
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/CallbacksVisitor.ts
@@ -0,0 +1,25 @@
+import stampit from 'stampit';
+import { isYamlMapping } from 'apidom-ast';
+
+import MapYamlMappingVisitor from '../../generics/MapYamlMappingVisitor';
+import { isReferenceObject } from '../../../predicates';
+import { KindVisitor } from '../../generics';
+
+const CallbacksVisitor = stampit(KindVisitor, MapYamlMappingVisitor, {
+  props: {
+    specPath: (node: unknown) => {
+      // eslint-disable-next-line no-nested-ternary
+      return isReferenceObject({}, node)
+        ? ['document', 'objects', 'Reference']
+        : isYamlMapping(node)
+        ? ['document', 'objects', 'Callback']
+        : ['kind'];
+    },
+  },
+  init() {
+    this.element = new this.namespace.elements.Object();
+    this.element.classes.push('callbacks');
+  },
+});
+
+export default CallbacksVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DeprecatedVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DeprecatedVisitor.ts
new file mode 100644
index 0000000000..493d00d539
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DeprecatedVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const DeprecatedVisitor = stampit(KindVisitor);
+
+export default DeprecatedVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DescriptionVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DescriptionVisitor.ts
new file mode 100644
index 0000000000..5a01b32367
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/DescriptionVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const DescriptionVisitor = stampit(KindVisitor);
+
+export default DescriptionVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/OperationIdVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/OperationIdVisitor.ts
new file mode 100644
index 0000000000..711ec61648
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/OperationIdVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const OperationIdVisitor = stampit(KindVisitor);
+
+export default OperationIdVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/RequestBodyVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/RequestBodyVisitor.ts
new file mode 100644
index 0000000000..6cb4678591
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/RequestBodyVisitor.ts
@@ -0,0 +1,17 @@
+import stampit from 'stampit';
+import { T as stubTrue } from 'ramda';
+
+import { isRequestBodyObject, isReferenceObject } from '../../../predicates';
+import AlternatingVisitor from '../../generics/AlternatingVisitor';
+
+const RequestBodyVisitor = stampit(AlternatingVisitor, {
+  props: {
+    alternator: [
+      { predicate: isRequestBodyObject({}), specPath: ['document', 'objects', 'RequestBody'] },
+      { predicate: isReferenceObject({}), specPath: ['document', 'objects', 'Reference'] },
+      { predicate: stubTrue, specPath: ['kind'] },
+    ],
+  },
+});
+
+export default RequestBodyVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/SummaryVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/SummaryVisitor.ts
new file mode 100644
index 0000000000..486de6038c
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/SummaryVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const SummaryVisitor = stampit(KindVisitor);
+
+export default SummaryVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/TagsVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/TagsVisitor.ts
new file mode 100644
index 0000000000..37ca59760e
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/TagsVisitor.ts
@@ -0,0 +1,20 @@
+import stampit from 'stampit';
+import { YamlSequence } from 'apidom-ast';
+
+import SpecificationVisitor from '../../SpecificationVisitor';
+import { KindVisitor } from '../../generics';
+
+const TagsVisitor = stampit(KindVisitor, SpecificationVisitor, {
+  methods: {
+    sequence(sequenceNode: YamlSequence) {
+      // @ts-ignore
+      const result = KindVisitor.compose.methods.sequence.call(this, sequenceNode);
+
+      this.element.classes.push('tags');
+
+      return result;
+    },
+  },
+});
+
+export default TagsVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/index.ts
new file mode 100644
index 0000000000..36962f0685
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/operation/index.ts
@@ -0,0 +1,16 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+import { KindVisitor } from '../../generics';
+
+const OperationVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'Operation']),
+  },
+  init() {
+    this.element = new this.namespace.elements.Operation();
+  },
+});
+
+export default OperationVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/$RefVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/$RefVisitor.ts
new file mode 100644
index 0000000000..45720b9429
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/$RefVisitor.ts
@@ -0,0 +1,21 @@
+import stampit from 'stampit';
+import { YamlScalar } from 'apidom-ast';
+
+import SpecificationVisitor from '../../SpecificationVisitor';
+import { BREAK } from '../..';
+import { KindVisitor } from '../../generics';
+
+const $RefVisitor = stampit(KindVisitor, SpecificationVisitor, {
+  methods: {
+    scalar(scalarNode: YamlScalar) {
+      const { content } = scalarNode;
+      const refElement = new this.namespace.elements.Ref(content);
+      refElement.path = content;
+      this.element = this.maybeAddSourceMap(scalarNode, refElement);
+
+      return BREAK;
+    },
+  },
+});
+
+export default $RefVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/DescriptionVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/DescriptionVisitor.ts
new file mode 100644
index 0000000000..5a01b32367
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/DescriptionVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const DescriptionVisitor = stampit(KindVisitor);
+
+export default DescriptionVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/SummaryVisitor.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/SummaryVisitor.ts
new file mode 100644
index 0000000000..486de6038c
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/SummaryVisitor.ts
@@ -0,0 +1,7 @@
+import stampit from 'stampit';
+
+import { KindVisitor } from '../../generics';
+
+const SummaryVisitor = stampit(KindVisitor);
+
+export default SummaryVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/index.ts
new file mode 100644
index 0000000000..158f5bbd66
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/path-item/index.ts
@@ -0,0 +1,28 @@
+import stampit from 'stampit';
+import { StringElement } from 'minim';
+import { always } from 'ramda';
+import { isOperationElement, OperationElement } from 'apidom-ns-openapi3-1';
+
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+import { KindVisitor } from '../../generics';
+
+const PathItemVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor).init(
+  function PathItemVisitor() {
+    this.element = new this.namespace.elements.PathItem();
+    this.specPath = always(['document', 'objects', 'PathItem']);
+
+    this.mapping = {
+      leave() {
+        this.element
+          .filter(isOperationElement)
+          .forEach((operationElement: OperationElement, httpMethodElementCI: StringElement) => {
+            const httpMethod = httpMethodElementCI.toValue().toUpperCase();
+            const httpMethodElementCS = new this.namespace.elements.String(httpMethod);
+            operationElement.setMetaProperty('httpMethod', httpMethodElementCS);
+          });
+      },
+    };
+  },
+);
+
+export default PathItemVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/paths/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/paths/index.ts
new file mode 100644
index 0000000000..26c85adf23
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/paths/index.ts
@@ -0,0 +1,18 @@
+import stampit from 'stampit';
+import { test, always } from 'ramda';
+
+import PatternedFieldsYamlMappingVisitor from '../../generics/PatternedFieldsYamlMappingVisitor';
+import { KindVisitor } from '../../generics';
+
+const PathsVisitor = stampit(KindVisitor, PatternedFieldsYamlMappingVisitor, {
+  props: {
+    fieldPatternPredicate: test(/^\/(?<path>.*)$/),
+    specPath: always(['document', 'objects', 'PathItem']),
+    canSupportSpecificationExtensions: true,
+  },
+  init() {
+    this.element = new this.namespace.elements.Paths();
+  },
+});
+
+export default PathsVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/reference/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/reference/index.ts
new file mode 100644
index 0000000000..2569216cd1
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/reference/index.ts
@@ -0,0 +1,16 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+import { KindVisitor } from '../../generics';
+
+const ReferenceVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'Reference']),
+  },
+  init() {
+    this.element = new this.namespace.elements.Reference();
+  },
+});
+
+export default ReferenceVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/request-body/index.ts b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/request-body/index.ts
new file mode 100644
index 0000000000..dedce051b8
--- /dev/null
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/src/parser/visitors/open-api-3-1/request-body/index.ts
@@ -0,0 +1,16 @@
+import stampit from 'stampit';
+import { always } from 'ramda';
+
+import FixedFieldsYamlMappingVisitor from '../../generics/FixedFieldsYamlMappingVisitor';
+import { KindVisitor } from '../../generics';
+
+const RequestBodyVisitor = stampit(KindVisitor, FixedFieldsYamlMappingVisitor, {
+  props: {
+    specPath: always(['document', 'objects', 'RequestBody']),
+  },
+  init() {
+    this.element = new this.namespace.elements.RequestBody();
+  },
+});
+
+export default RequestBodyVisitor;
diff --git a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/test/fixtures/sample-api.yaml b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/test/fixtures/sample-api.yaml
index 642a577806..2b562f79ab 100644
--- a/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/test/fixtures/sample-api.yaml
+++ b/apidom/packages/apidom-parser-adapter-openapi3-1-yaml/test/fixtures/sample-api.yaml
@@ -61,5 +61,73 @@ security:
   - petstore_auth:
       - write:pets
       - read:pets
+paths:
+  /users:
+    summary: path item summary
+    description: path item description
+    get:
+      tags:
+        - tag1
+        - tag2
+      summary: Returns a list of users.
+      description: Optional extended description in CommonMark or HTML.
+      externalDocs:
+        description: Find more info here
+        url: https://example.com
+      operationId: getUserList
+      parameters:
+        name: userId
+        in: query
+        description: ID of the user
+        required: true
+      requestBody:
+        content: {}
+      responses:
+        200:
+          description: A JSON array of user names
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  type: string
+        201:
+          description: A response
+          content:
+            application/json:
+              schema:
+                $ref: #/components/schemas/User
+        xxx:
+          key: val
+      callbacks:
+        myCallback:
+          '{$request.query.queryUrl}':
+            post:
+              requestBody:
+                description: Callback payload
+                content:
+                  application/json:
+                    schema:
+                      $ref: #/components/schemas/User
+              responses:
+                200:
+                  description: callback successfully processed
+      deprecated: true
+      security:
+        - {}
+        - petstore_auth:
+            - write:pets
+            - read:pets
+      servers:
+        - url: http://api.example.com/v3
+          description: Redundant server description, e.g. redundant server
+    servers:
+      - url: http://api.example.com/v2
+        description: Redundant server description, e.g. redundant server
+    parameters:
+      name: userId
+      in: query
+      description: ID of the user
+      required: true
 ...
 prop: value