diff --git a/package-lock.json b/package-lock.json
index 2af7a44a36..e47eeb40e1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,6 +8,7 @@
             "dependencies": {
                 "@stoplight/spectral-cli": "^6.14.2",
                 "@stoplight/spectral-core": "^1.19.4",
+                "@stoplight/spectral-functions": "^1.9.3",
                 "@stoplight/spectral-ref-resolver": "^1.0.5",
                 "@stoplight/spectral-ruleset-bundler": "^1.6.1",
                 "eslint-plugin-jest": "^28.9.0",
diff --git a/package.json b/package.json
index 8744a4a3ff..ebe70edb00 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "dependencies": {
         "@stoplight/spectral-cli": "^6.14.2",
         "@stoplight/spectral-core": "^1.19.4",
+        "@stoplight/spectral-functions": "^1.9.3",
         "@stoplight/spectral-ref-resolver": "^1.0.5",
         "@stoplight/spectral-ruleset-bundler": "^1.6.1",
         "eslint-plugin-jest": "^28.9.0",
diff --git a/tools/spectral/ipa/__tests__/eachCustomMethodMustBeGetOrPost.test.js b/tools/spectral/ipa/__tests__/eachCustomMethodMustBeGetOrPost.test.js
index 369f61efcd..ec919c3e94 100644
--- a/tools/spectral/ipa/__tests__/eachCustomMethodMustBeGetOrPost.test.js
+++ b/tools/spectral/ipa/__tests__/eachCustomMethodMustBeGetOrPost.test.js
@@ -30,6 +30,28 @@ testRule('xgen-IPA-109-custom-method-must-be-GET-or-POST', [
     },
     errors: [],
   },
+  {
+    name: 'invalid methods with exception',
+    document: {
+      paths: {
+        '/d/{exampleId}:method': {
+          get: {},
+          post: {},
+          'x-xgen-IPA-exception': {
+            'xgen-IPA-109-custom-method-must-be-GET-or-POST': {},
+          },
+        },
+        '/d:method': {
+          get: {},
+          post: {},
+          'x-xgen-IPA-exception': {
+            'xgen-IPA-109-custom-method-must-be-GET-or-POST': {},
+          },
+        },
+      },
+    },
+    errors: [],
+  },
   {
     name: 'invalid methods',
     document: {
diff --git a/tools/spectral/ipa/__tests__/eachCustomMethodMustUseCamelCase.test.js b/tools/spectral/ipa/__tests__/eachCustomMethodMustUseCamelCase.test.js
new file mode 100644
index 0000000000..205a35d58e
--- /dev/null
+++ b/tools/spectral/ipa/__tests__/eachCustomMethodMustUseCamelCase.test.js
@@ -0,0 +1,84 @@
+import testRule from './__helpers__/testRule';
+import { DiagnosticSeverity } from '@stoplight/types';
+
+testRule('xgen-IPA-109-custom-method-must-use-camel-case', [
+  {
+    name: 'valid methods',
+    document: {
+      paths: {
+        '/a/{exampleId}:methodName': {},
+        '/a:methodName': {},
+      },
+    },
+    errors: [],
+  },
+  {
+    name: 'invalid methods with exception',
+    document: {
+      paths: {
+        '/b/{exampleId}:MethodName': {
+          'x-xgen-IPA-exception': {
+            'xgen-IPA-109-custom-method-must-use-camel-case': {},
+          },
+        },
+        '/b:MethodName': {
+          'x-xgen-IPA-exception': {
+            'xgen-IPA-109-custom-method-must-use-camel-case': {},
+          },
+        },
+      },
+    },
+    errors: [],
+  },
+  {
+    name: 'invalid methods',
+    document: {
+      paths: {
+        '/a/{exampleId}:MethodName': {},
+        '/a:MethodName': {},
+        '/a/{exampleId}:method_name': {},
+        '/a:method_name': {},
+        '/a/{exampleId}:': {},
+        '/a:': {},
+      },
+    },
+    errors: [
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'MethodName must use camelCase format. http://go/ipa/109',
+        path: ['paths', '/a/{exampleId}:MethodName'],
+        severity: DiagnosticSeverity.Warning,
+      },
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'MethodName must use camelCase format. http://go/ipa/109',
+        path: ['paths', '/a:MethodName'],
+        severity: DiagnosticSeverity.Warning,
+      },
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'method_name must use camelCase format. http://go/ipa/109',
+        path: ['paths', '/a/{exampleId}:method_name'],
+        severity: DiagnosticSeverity.Warning,
+      },
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'method_name must use camelCase format. http://go/ipa/109',
+        path: ['paths', '/a:method_name'],
+        severity: DiagnosticSeverity.Warning,
+      },
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'Custom method name cannot be empty or blank. http://go/ipa/109',
+        path: ['paths', '/a/{exampleId}:'],
+        severity: DiagnosticSeverity.Warning,
+      },
+      {
+        code: 'xgen-IPA-109-custom-method-must-use-camel-case',
+        message: 'Custom method name cannot be empty or blank. http://go/ipa/109',
+        path: ['paths', '/a:'],
+        severity: DiagnosticSeverity.Warning,
+      },
+    ],
+  },
+]);
diff --git a/tools/spectral/ipa/rulesets/IPA-109.yaml b/tools/spectral/ipa/rulesets/IPA-109.yaml
index 48c1645e07..5d3561f386 100644
--- a/tools/spectral/ipa/rulesets/IPA-109.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-109.yaml
@@ -3,6 +3,7 @@
 
 functions:
   - eachCustomMethodMustBeGetOrPost
+  - eachCustomMethodMustUseCamelCase
 
 rules:
   xgen-IPA-109-custom-method-must-be-GET-or-POST:
@@ -12,3 +13,11 @@ rules:
     given: '$.paths[*]'
     then:
       function: 'eachCustomMethodMustBeGetOrPost'
+
+  xgen-IPA-109-custom-method-must-use-camel-case:
+    description: 'The custom method must use camelCase format. http://go/ipa/109'
+    message: '{{error}} http://go/ipa/109'
+    severity: warn
+    given: '$.paths[*]'
+    then:
+      function: 'eachCustomMethodMustUseCamelCase'
diff --git a/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustBeGetOrPost.js b/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustBeGetOrPost.js
index bb7be025da..fa14929c6f 100644
--- a/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustBeGetOrPost.js
+++ b/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustBeGetOrPost.js
@@ -1,5 +1,7 @@
 import { isCustomMethod } from './utils/resourceEvaluation.js';
+import { hasException } from './utils/exceptions.js';
 
+const RULE_NAME = 'xgen-IPA-109-custom-method-must-be-GET-or-POST';
 const ERROR_MESSAGE = 'The HTTP method for custom methods must be GET or POST.';
 const ERROR_RESULT = [{ message: ERROR_MESSAGE }];
 const VALID_METHODS = ['get', 'post'];
@@ -11,6 +13,10 @@ export default (input, opts, { path }) => {
 
   if (!isCustomMethod(pathKey)) return;
 
+  if (hasException(input, RULE_NAME)) {
+    return;
+  }
+
   //Extract the keys which are equivalent of the http methods
   let keys = Object.keys(input);
   const httpMethods = keys.filter((key) => HTTP_METHODS.includes(key));
diff --git a/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustUseCamelCase.js b/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustUseCamelCase.js
new file mode 100644
index 0000000000..d027d78f67
--- /dev/null
+++ b/tools/spectral/ipa/rulesets/functions/eachCustomMethodMustUseCamelCase.js
@@ -0,0 +1,25 @@
+import { getCustomMethodName, isCustomMethod } from './utils/resourceEvaluation.js';
+import { hasException } from './utils/exceptions.js';
+import { casing } from '@stoplight/spectral-functions';
+
+const RULE_NAME = 'xgen-IPA-109-custom-method-must-use-camel-case';
+
+export default (input, opts, { path }) => {
+  // Extract the path key (e.g., '/a/{exampleId}:method') from the JSONPath.
+  let pathKey = path[1];
+
+  if (!isCustomMethod(pathKey)) return;
+
+  if (hasException(input, RULE_NAME)) {
+    return;
+  }
+
+  let methodName = getCustomMethodName(pathKey);
+  if (methodName.length === 0 || methodName.trim().length === 0) {
+    return [{ message: 'Custom method name cannot be empty or blank.' }];
+  }
+
+  if (casing(methodName, { type: 'camel', disallowDigits: true })) {
+    return [{ message: `${methodName} must use camelCase format.` }];
+  }
+};
diff --git a/tools/spectral/ipa/rulesets/functions/utils/resourceEvaluation.js b/tools/spectral/ipa/rulesets/functions/utils/resourceEvaluation.js
index 0c7d61e0e1..fe65ad4f97 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/resourceEvaluation.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/resourceEvaluation.js
@@ -6,6 +6,10 @@ export function isCustomMethod(path) {
   return path.includes(':');
 }
 
+export function getCustomMethodName(path) {
+  return path.split(':')[1];
+}
+
 /**
  * Checks if a resource is a singleton resource ({@link https://docs.devprod.prod.corp.mongodb.com/ipa/113 IPA-113}) based on the paths for the
  * resource. The resource may have custom methods. Use {@link getResourcePaths} to get all paths of a resource.