diff --git a/lib/internal/crypto/cfrg.js b/lib/internal/crypto/cfrg.js
index 9112dbdd3166a0..e7141c04b3f437 100644
--- a/lib/internal/crypto/cfrg.js
+++ b/lib/internal/crypto/cfrg.js
@@ -27,7 +27,6 @@ const {
 } = require('internal/crypto/util');
 
 const {
-  emitExperimentalWarning,
   lazyDOMException,
   promisify,
 } = require('internal/util');
@@ -105,7 +104,6 @@ function createCFRGRawKey(name, keyData, isPublic) {
 
 async function cfrgGenerateKey(algorithm, extractable, keyUsages) {
   const { name } = algorithm;
-  emitExperimentalWarning(`The ${name} Web Crypto API algorithm`);
 
   const usageSet = new SafeSet(keyUsages);
   switch (name) {
@@ -187,7 +185,6 @@ async function cfrgGenerateKey(algorithm, extractable, keyUsages) {
 }
 
 function cfrgExportKey(key, format) {
-  emitExperimentalWarning(`The ${key.algorithm.name} Web Crypto API algorithm`);
   return jobPromise(() => new ECKeyExportJob(
     kCryptoJobAsync,
     format,
@@ -202,7 +199,6 @@ async function cfrgImportKey(
   keyUsages) {
 
   const { name } = algorithm;
-  emitExperimentalWarning(`The ${name} Web Crypto API algorithm`);
   let keyObject;
   const usagesSet = new SafeSet(keyUsages);
   switch (format) {
@@ -319,7 +315,6 @@ async function cfrgImportKey(
 }
 
 function eddsaSignVerify(key, data, { name, context }, signature) {
-  emitExperimentalWarning(`The ${name} Web Crypto API algorithm`);
   const mode = signature === undefined ? kSignJobModeSign : kSignJobModeVerify;
   const type = mode === kSignJobModeSign ? 'private' : 'public';
 
diff --git a/lib/internal/crypto/util.js b/lib/internal/crypto/util.js
index d0f7e898d3495c..c5c214d602650d 100644
--- a/lib/internal/crypto/util.js
+++ b/lib/internal/crypto/util.js
@@ -11,6 +11,8 @@ const {
   DataViewPrototypeGetByteOffset,
   FunctionPrototypeBind,
   Number,
+  ObjectDefineProperty,
+  ObjectEntries,
   ObjectKeys,
   ObjectPrototypeHasOwnProperty,
   Promise,
@@ -63,6 +65,7 @@ const { Buffer } = require('buffer');
 
 const {
   cachedResult,
+  emitExperimentalWarning,
   filterDuplicateStrings,
   lazyDOMException,
 } = require('internal/util');
@@ -168,15 +171,6 @@ const kNamedCurveAliases = {
 
 const kAesKeyLengths = [128, 192, 256];
 
-// These are the only hash algorithms we currently support via
-// the Web Crypto API.
-const kHashTypes = [
-  'SHA-1',
-  'SHA-256',
-  'SHA-384',
-  'SHA-512',
-];
-
 const kSupportedAlgorithms = {
   'digest': {
     'SHA-1': null,
@@ -195,26 +189,18 @@ const kSupportedAlgorithms = {
     'AES-GCM': 'AesKeyGenParams',
     'AES-KW': 'AesKeyGenParams',
     'HMAC': 'HmacKeyGenParams',
-    'X25519': null,
-    'Ed25519': null,
-    'X448': null,
-    'Ed448': null,
   },
   'sign': {
     'RSASSA-PKCS1-v1_5': null,
     'RSA-PSS': 'RsaPssParams',
     'ECDSA': 'EcdsaParams',
     'HMAC': null,
-    'Ed25519': null,
-    'Ed448': 'Ed448Params',
   },
   'verify': {
     'RSASSA-PKCS1-v1_5': null,
     'RSA-PSS': 'RsaPssParams',
     'ECDSA': 'EcdsaParams',
     'HMAC': null,
-    'Ed25519': null,
-    'Ed448': 'Ed448Params',
   },
   'importKey': {
     'RSASSA-PKCS1-v1_5': 'RsaHashedImportParams',
@@ -229,17 +215,11 @@ const kSupportedAlgorithms = {
     'AES-CBC': null,
     'AES-GCM': null,
     'AES-KW': null,
-    'Ed25519': null,
-    'X25519': null,
-    'Ed448': null,
-    'X448': null,
   },
   'deriveBits': {
     'HKDF': 'HkdfParams',
     'PBKDF2': 'Pbkdf2Params',
     'ECDH': 'EcdhKeyDeriveParams',
-    'X25519': 'EcdhKeyDeriveParams',
-    'X448': 'EcdhKeyDeriveParams',
   },
   'encrypt': {
     'RSA-OAEP': 'RsaOaepParams',
@@ -270,6 +250,44 @@ const kSupportedAlgorithms = {
   },
 };
 
+const experimentalAlgorithms = {
+  'X25519': {
+    generateKey: null,
+    importKey: null,
+    deriveBits: 'EcdhKeyDeriveParams',
+  },
+  'Ed25519': {
+    generateKey: null,
+    sign: null,
+    verify: null,
+    importKey: null,
+  },
+  'X448': {
+    generateKey: null,
+    importKey: null,
+    deriveBits: 'EcdhKeyDeriveParams',
+  },
+  'Ed448': {
+    generateKey: null,
+    sign: 'Ed448Params',
+    verify: 'Ed448Params',
+    importKey: null,
+  },
+};
+
+for (const { 0: name, 1: ops } of ObjectEntries(experimentalAlgorithms)) {
+  for (const { 0: op, 1: dict } of ObjectEntries(ops)) {
+    ObjectDefineProperty(kSupportedAlgorithms[op], name, {
+      get() {
+        emitExperimentalWarning(`The ${name} Web Crypto API algorithm`);
+        return dict;
+      },
+      __proto__: null,
+      enumerable: true,
+    });
+  }
+}
+
 const simpleAlgorithmDictionaries = {
   AesGcmParams: { iv: 'BufferSource', additionalData: 'BufferSource' },
   RsaHashedKeyGenParams: { hash: 'HashAlgorithmIdentifier' },
@@ -594,7 +612,6 @@ module.exports = {
   setEngine,
   toBuf,
 
-  kHashTypes,
   kNamedCurveAliases,
   kAesKeyLengths,
   normalizeAlgorithm,