diff --git a/packages/apidom-ls/src/config/asyncapi/target-specs.ts b/packages/apidom-ls/src/config/asyncapi/target-specs.ts
new file mode 100644
index 000000000..a41e3c0dc
--- /dev/null
+++ b/packages/apidom-ls/src/config/asyncapi/target-specs.ts
@@ -0,0 +1,17 @@
+export const AsyncAPI200 = [{ namespace: 'asyncapi', version: '2.0.0' }];
+export const AsyncAPI210 = [{ namespace: 'asyncapi', version: '2.1.0' }];
+export const AsyncAPI220 = [{ namespace: 'asyncapi', version: '2.2.0' }];
+export const AsyncAPI230 = [{ namespace: 'asyncapi', version: '2.3.0' }];
+export const AsyncAPI240 = [{ namespace: 'asyncapi', version: '2.4.0' }];
+export const AsyncAPI250 = [{ namespace: 'asyncapi', version: '2.5.0' }];
+export const AsyncAPI260 = [{ namespace: 'asyncapi', version: '2.6.0' }];
+
+export const AsyncAPI2 = [
+  ...AsyncAPI200,
+  ...AsyncAPI210,
+  ...AsyncAPI220,
+  ...AsyncAPI230,
+  ...AsyncAPI240,
+  ...AsyncAPI250,
+  ...AsyncAPI260,
+];
diff --git a/packages/apidom-ls/src/config/codes.ts b/packages/apidom-ls/src/config/codes.ts
index 1846e2692..01980407c 100644
--- a/packages/apidom-ls/src/config/codes.ts
+++ b/packages/apidom-ls/src/config/codes.ts
@@ -66,6 +66,7 @@ enum ApilintCodes {
   SCHEMA_EXAMPLE_DEPRECATED,
   SCHEMA_TYPE_OPENAPI_3_0,
   SCHEMA_NULLABLE_NOT_RECOMMENDED,
+  SCHEMA_MISSING_CORE_FIELDS,
 
   DUPLICATE_KEYS = 14999,
   NOT_ALLOWED_FIELDS = 15000,
diff --git a/packages/apidom-ls/src/config/common/schema/lint/index.ts b/packages/apidom-ls/src/config/common/schema/lint/index.ts
index 5329c9f04..ebc83ab27 100644
--- a/packages/apidom-ls/src/config/common/schema/lint/index.ts
+++ b/packages/apidom-ls/src/config/common/schema/lint/index.ts
@@ -36,6 +36,10 @@ import minLengthTypeLint from './min-length--type';
 import minPropertiesNonObjectLint from './min-properties--non-object';
 import minPropertiesTypeLint from './min-properties--type';
 import minimumPatternLint from './minimum--pattern';
+import missingCoreFieldsOpenAPI2_0Lint from './missing-core-fields-openapi-2-0';
+import missingCoreFieldsOpenAPI3_0Lint from './missing-core-fields-openapi-3-0';
+import missingCoreFieldsOpenAPI3_1Lint from './missing-core-fields-openapi-3-1';
+import missingCoreFieldsAsyncAPI2Lint from './missing-core-fields-asyncapi-2';
 import multipleOfTypeLint from './multiple-of--type';
 import notTypeLint from './not--type';
 import nullableNotRecommendedLint from './nullable--not-recommended';
@@ -102,6 +106,10 @@ const schemaLints = [
   minPropertiesNonObjectLint,
   minPropertiesTypeLint,
   minimumPatternLint,
+  missingCoreFieldsOpenAPI2_0Lint,
+  missingCoreFieldsOpenAPI3_0Lint,
+  missingCoreFieldsOpenAPI3_1Lint,
+  missingCoreFieldsAsyncAPI2Lint,
   multipleOfTypeLint,
   notTypeLint,
   nullableNotRecommendedLint,
diff --git a/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-asyncapi-2.ts b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-asyncapi-2.ts
new file mode 100644
index 000000000..72a53bf6d
--- /dev/null
+++ b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-asyncapi-2.ts
@@ -0,0 +1,73 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+import { AsyncAPI2 } from '../../../asyncapi/target-specs';
+
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const missingCoreFieldsAsyncAPI2Lint: LinterMeta = {
+  code: ApilintCodes.SCHEMA_MISSING_CORE_FIELDS,
+  source: 'apilint',
+  message: 'Schema does not include any Schema Object keywords',
+  severity: DiagnosticSeverity.Hint,
+  linterFunction: 'existAnyOfFields',
+  linterParams: [
+    [
+      '$id',
+      '$schema',
+      '$comment',
+      '$ref',
+      'if',
+      'then',
+      'else',
+      'contentEncoding',
+      'contentMediaType',
+      'contains',
+      'propertyNames',
+      'const',
+      'examples',
+      'multipleOf',
+      'maximum',
+      'exclusiveMaximum',
+      'minimum',
+      'exclusiveMinimum',
+      'maxLength',
+      'minLength',
+      'pattern',
+      'additionalItems',
+      'items',
+      'maxItems',
+      'minItems',
+      'uniqueItems',
+      'patternProperties',
+      'dependencies',
+      'definitions',
+      'maxProperties',
+      'minProperties',
+      'required',
+      'properties',
+      'additionalProperties',
+      'enum',
+      'type',
+      'allOf',
+      'anyOf',
+      'oneOf',
+      'not',
+      'title',
+      'description',
+      'default',
+      'format',
+      'readOnly',
+      'writeOnly',
+      'discriminator',
+      'externalDocs',
+      'deprecated',
+    ],
+    true,
+    'boolean',
+  ],
+  marker: 'key',
+  targetSpecs: [...AsyncAPI2],
+};
+
+export default missingCoreFieldsAsyncAPI2Lint;
diff --git a/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-2-0.ts b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-2-0.ts
new file mode 100644
index 000000000..10865732e
--- /dev/null
+++ b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-2-0.ts
@@ -0,0 +1,55 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+import { OpenAPI2 } from '../../../openapi/target-specs';
+
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const missingCoreFieldsOpenAPI2Lint: LinterMeta = {
+  code: ApilintCodes.SCHEMA_MISSING_CORE_FIELDS,
+  source: 'apilint',
+  message: 'Schema does not include any Schema Object keywords',
+  severity: DiagnosticSeverity.Hint,
+  linterFunction: 'existAnyOfFields',
+  linterParams: [
+    [
+      '$ref',
+      'multipleOf',
+      'maximum',
+      'exclusiveMaximum',
+      'minimum',
+      'exclusiveMinimum',
+      'maxLength',
+      'minLength',
+      'pattern',
+      'additionalItems',
+      'items',
+      'maxItems',
+      'minItems',
+      'uniqueItems',
+      'maxProperties',
+      'minProperties',
+      'required',
+      'properties',
+      'additionalProperties',
+      'enum',
+      'type',
+      'allOf',
+      'title',
+      'description',
+      'default',
+      'format',
+      'readOnly',
+      'discriminator',
+      'externalDocs',
+      'xml',
+      'example',
+    ],
+    true,
+    'boolean',
+  ],
+  marker: 'key',
+  targetSpecs: [...OpenAPI2],
+};
+
+export default missingCoreFieldsOpenAPI2Lint;
diff --git a/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-0.ts b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-0.ts
new file mode 100644
index 000000000..f7eeae5fa
--- /dev/null
+++ b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-0.ts
@@ -0,0 +1,61 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+import { OpenAPI30 } from '../../../openapi/target-specs';
+
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const missingCoreFieldsOpenAPI3_0Lint: LinterMeta = {
+  code: ApilintCodes.SCHEMA_MISSING_CORE_FIELDS,
+  source: 'apilint',
+  message: 'Schema does not include any Schema Object keywords',
+  severity: DiagnosticSeverity.Hint,
+  linterFunction: 'existAnyOfFields',
+  linterParams: [
+    [
+      '$ref',
+      'multipleOf',
+      'maximum',
+      'exclusiveMaximum',
+      'minimum',
+      'exclusiveMinimum',
+      'maxLength',
+      'minLength',
+      'pattern',
+      'additionalItems',
+      'items',
+      'maxItems',
+      'minItems',
+      'uniqueItems',
+      'maxProperties',
+      'minProperties',
+      'required',
+      'properties',
+      'additionalProperties',
+      'enum',
+      'type',
+      'allOf',
+      'anyOf',
+      'oneOf',
+      'not',
+      'title',
+      'description',
+      'default',
+      'format',
+      'readOnly',
+      'nullable',
+      'discriminator',
+      'externalDocs',
+      'writeOnly',
+      'xml',
+      'example',
+      'deprecated',
+    ],
+    true,
+    'boolean',
+  ],
+  marker: 'key',
+  targetSpecs: [...OpenAPI30],
+};
+
+export default missingCoreFieldsOpenAPI3_0Lint;
diff --git a/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-1.ts b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-1.ts
new file mode 100644
index 000000000..27160c5ae
--- /dev/null
+++ b/packages/apidom-ls/src/config/common/schema/lint/missing-core-fields-openapi-3-1.ts
@@ -0,0 +1,87 @@
+import { DiagnosticSeverity } from 'vscode-languageserver-types';
+
+import ApilintCodes from '../../../codes';
+import { LinterMeta } from '../../../../apidom-language-types';
+import { OpenAPI31 } from '../../../openapi/target-specs';
+
+// eslint-disable-next-line @typescript-eslint/naming-convention
+const missingCoreFieldsOpenAPI3_1Lint: LinterMeta = {
+  code: ApilintCodes.SCHEMA_MISSING_CORE_FIELDS,
+  source: 'apilint',
+  message: 'Schema does not include any Schema Object keywords',
+  severity: DiagnosticSeverity.Hint,
+  linterFunction: 'existAnyOfFields',
+  linterParams: [
+    [
+      '$ref',
+      '$schema',
+      '$id',
+      '$vocabulary',
+      '$anchor',
+      '$dynamicAnchor',
+      '$defs',
+      '$comment',
+      'if',
+      'then',
+      'else',
+      'dependentSchemas',
+      'prefixItems',
+      'contains',
+      'patternProperties',
+      'propertyNames',
+      'unevaluatedProperties',
+      'unevaluatedItems',
+      'const',
+      'maxContains',
+      'minContains',
+      'dependencies',
+      'dependentRequired',
+      'examples',
+      'contentEncoding',
+      'contentMediaType',
+      'contentSchema',
+      'definitions',
+      'multipleOf',
+      'maximum',
+      'exclusiveMaximum',
+      'minimum',
+      'exclusiveMinimum',
+      'maxLength',
+      'minLength',
+      'pattern',
+      'additionalItems',
+      'items',
+      'maxItems',
+      'minItems',
+      'uniqueItems',
+      'maxProperties',
+      'minProperties',
+      'required',
+      'properties',
+      'additionalProperties',
+      'enum',
+      'type',
+      'allOf',
+      'anyOf',
+      'oneOf',
+      'not',
+      'title',
+      'description',
+      'default',
+      'format',
+      'readOnly',
+      'discriminator',
+      'externalDocs',
+      'writeOnly',
+      'xml',
+      'example',
+      'deprecated',
+    ],
+    true,
+    'boolean',
+  ],
+  marker: 'key',
+  targetSpecs: [...OpenAPI31],
+};
+
+export default missingCoreFieldsOpenAPI3_1Lint;
diff --git a/packages/apidom-ls/src/services/validation/linter-functions.ts b/packages/apidom-ls/src/services/validation/linter-functions.ts
index efe0b2573..32fdc0826 100644
--- a/packages/apidom-ls/src/services/validation/linter-functions.ts
+++ b/packages/apidom-ls/src/services/validation/linter-functions.ts
@@ -172,6 +172,30 @@ export const standardLinterfunctions: FunctionItem[] = [
       return true;
     },
   },
+  {
+    functionName: 'existAnyOfFields',
+    function: (
+      element: Element,
+      keys: string[],
+      allowEmpty: boolean,
+      skipIfType?: string,
+    ): boolean => {
+      if (element && isObject(element)) {
+        if (skipIfType && isType(element, skipIfType)) {
+          return true;
+        }
+        if (!element.keys() || element.keys().length === 0) {
+          return allowEmpty;
+        }
+        for (const key of keys) {
+          if (element.hasKey(key)) {
+            return true;
+          }
+        }
+      }
+      return false;
+    },
+  },
   {
     functionName: 'allowedFields',
     function: (
diff --git a/packages/apidom-ls/test/fixtures/validation/asyncapi/issue3549.yaml b/packages/apidom-ls/test/fixtures/validation/asyncapi/issue3549.yaml
new file mode 100644
index 000000000..e6c09aeb8
--- /dev/null
+++ b/packages/apidom-ls/test/fixtures/validation/asyncapi/issue3549.yaml
@@ -0,0 +1,44 @@
+asyncapi: 2.1.0
+info:
+  version: '1.0.0'
+  title: missing schema keywords
+  description: 'desc'
+  license:
+    name: Apache 2.0
+    url: https://www.apache.org/licenses/LICENSE-2.0
+
+servers:
+  production:
+    url: mqtt://test.mosquitto.org
+    protocol: mqtt
+    description: Test MQTT broker
+
+channels:
+  user/signedup:
+    publish:
+      operationId: onUserSignUp
+      message:
+        $ref : '#/components/messages/UserSignedUp'
+
+components:
+  messages:
+    UserSignedUp:
+      name: userSignedUp
+      title: User signed up event
+      summary: Inform about a new user registration in the system
+      contentType: application/json
+      payload:
+        $ref: '#/components/schemas/userSignedUpPayload'
+
+  schemas:
+    userSignedUpPayload:
+      type: object
+      properties:
+        anyOf:
+          otherKey: foo
+        good:
+          otherKey: foo
+          $schema: good
+        boolFalse: false
+        boolTrue: true
+        emptyObject: {}
diff --git a/packages/apidom-ls/test/fixtures/validation/oas/issue3549.yaml b/packages/apidom-ls/test/fixtures/validation/oas/issue3549.yaml
new file mode 100644
index 000000000..766ecd1e6
--- /dev/null
+++ b/packages/apidom-ls/test/fixtures/validation/oas/issue3549.yaml
@@ -0,0 +1,24 @@
+openapi: 3.1.0
+info:
+  title: missing schema keywords
+  version: 1.0.0
+paths:
+  /a:
+    get:
+      operationId: aget
+      responses:
+        '200':
+          description: aget
+          content:
+            application/json:
+              schema:
+                type: object
+                properties: 
+                  anyOf:
+                    otherKey: foo
+                  good:
+                    otherKey: foo
+                    $dynamicAnchor: good
+                  boolFalse: false
+                  boolTrue: true
+                  emptyObject: {}
diff --git a/packages/apidom-ls/test/openapi-json.ts b/packages/apidom-ls/test/openapi-json.ts
index 619542fe8..0a7833374 100644
--- a/packages/apidom-ls/test/openapi-json.ts
+++ b/packages/apidom-ls/test/openapi-json.ts
@@ -509,6 +509,13 @@ describe('apidom-ls', function () {
         code: 7030101,
         source: 'apilint',
       },
+      {
+        range: { start: { line: 30, character: 10 }, end: { line: 30, character: 14 } },
+        message: 'Schema does not include any Schema Object keywords',
+        severity: 4,
+        code: 10072,
+        source: 'apilint',
+      },
       {
         range: { start: { line: 185, character: 20 }, end: { line: 190, character: 7 } },
         message: 'parameters must be an array',
diff --git a/packages/apidom-ls/test/openapi-yaml.ts b/packages/apidom-ls/test/openapi-yaml.ts
index 6f7b093db..c76946d68 100644
--- a/packages/apidom-ls/test/openapi-yaml.ts
+++ b/packages/apidom-ls/test/openapi-yaml.ts
@@ -517,6 +517,13 @@ describe('apidom-ls-yaml', function () {
         code: 7030101,
         source: 'apilint',
       },
+      {
+        range: { start: { line: 28, character: 8 }, end: { line: 28, character: 10 } },
+        message: 'Schema does not include any Schema Object keywords',
+        severity: 4,
+        code: 10072,
+        source: 'apilint',
+      },
       {
         range: { start: { line: 128, character: 6 }, end: { line: 132, character: 0 } },
         message: 'parameters must be an array',
diff --git a/packages/apidom-ls/test/validate.ts b/packages/apidom-ls/test/validate.ts
index 227ba6609..b1b9efbaa 100644
--- a/packages/apidom-ls/test/validate.ts
+++ b/packages/apidom-ls/test/validate.ts
@@ -3696,4 +3696,63 @@ describe('apidom-ls-validate', function () {
 
     languageService.terminate();
   });
+
+  it('oas / yaml - schema should have at least one Schema core keyword - issue #3549', async function () {
+    const validationContext: ValidationContext = {
+      comments: DiagnosticSeverity.Error,
+      maxNumberOfProblems: 100,
+      relatedInformation: false,
+    };
+
+    const spec = fs
+      .readFileSync(path.join(__dirname, 'fixtures', 'validation', 'oas', 'issue3549.yaml'))
+      .toString();
+    const doc: TextDocument = TextDocument.create('foo://bar/issue3549.yaml', 'yaml', 0, spec);
+
+    const languageService: LanguageService = getLanguageService(contextNoSchema);
+
+    const result = await languageService.doValidation(doc, validationContext);
+    const expected: Diagnostic[] = [
+      {
+        range: { start: { line: 16, character: 18 }, end: { line: 16, character: 23 } },
+        message: 'Schema does not include any Schema Object keywords',
+        severity: 4,
+        code: 10072,
+        source: 'apilint',
+      },
+    ];
+    assert.deepEqual(result, expected as Diagnostic[]);
+
+    languageService.terminate();
+  });
+
+  it('asyncapi / yaml - schema should have at least one Schema core keyword - issue #3549', async function () {
+    const validationContext: ValidationContext = {
+      comments: DiagnosticSeverity.Error,
+      maxNumberOfProblems: 100,
+      relatedInformation: false,
+    };
+
+    const spec = fs
+      .readFileSync(path.join(__dirname, 'fixtures', 'validation', 'asyncapi', 'issue3549.yaml'))
+      .toString();
+    const doc: TextDocument = TextDocument.create('foo://bar/issue3549.yaml', 'yaml', 0, spec);
+
+    const languageService: LanguageService = getLanguageService(contextNoSchema);
+
+    const result = await languageService.doValidation(doc, validationContext);
+    const expected: Diagnostic[] = [
+      {
+        range: { start: { line: 36, character: 8 }, end: { line: 36, character: 13 } },
+        message: 'Schema does not include any Schema Object keywords',
+        severity: 4,
+        code: 10072,
+        source: 'apilint',
+      },
+    ];
+    console.log(JSON.stringify(result, null, 2));
+    assert.deepEqual(result, expected as Diagnostic[]);
+
+    languageService.terminate();
+  });
 });