diff --git a/jambonz-app-json-validation.js b/jambonz-app-json-validation.js
index 88e39f6..b2f5f45 100644
--- a/jambonz-app-json-validation.js
+++ b/jambonz-app-json-validation.js
@@ -4,6 +4,27 @@ const _specData = require('./specs');
 const specs = new Map();
 for (const key in _specData) { specs.set(key, _specData[key]); }
 
+/* verb synonyms and shortcuts: maps alias verb names to their canonical form,
+   optionally injecting properties (e.g. vendor) into the verb data */
+const verbTransforms = new Map([
+  ['stream', {verb: 'listen'}],
+  ['s2s', {verb: 'llm'}],
+  ['openai_s2s', {verb: 'llm', properties: {vendor: 'openai'}}],
+  ['microsoft_s2s', {verb: 'llm', properties: {vendor: 'microsoft'}}],
+  ['google_s2s', {verb: 'llm', properties: {vendor: 'google'}}],
+  ['elevenlabs_s2s', {verb: 'llm', properties: {vendor: 'elevenlabs'}}],
+  ['deepgram_s2s', {verb: 'llm', properties: {vendor: 'deepgram'}}],
+  ['voiceagent_s2s', {verb: 'llm', properties: {vendor: 'voiceagent'}}],
+  ['ultravox_s2s', {verb: 'llm', properties: {vendor: 'ultravox'}}],
+]);
+
+function applyVerbTransform(name, data) {
+  const transform = verbTransforms.get(name);
+  if (!transform) return {name, data};
+  const newData = transform.properties ? {...transform.properties, ...data} : data;
+  return {name: transform.verb, data: newData};
+}
+
 function normalizeJambones(logger, obj) {
   if (!Array.isArray(obj)) {
     throw new Error('malformed jambonz payload: must be array');
@@ -13,18 +34,22 @@ function normalizeJambones(logger, obj) {
     if (typeof tdata !== 'object') throw new Error('malformed jambonz payload: must be array of objects');
     if ('verb' in tdata) {
       // {verb: 'say', text: 'foo..bar'..}
-      const name = tdata.verb;
       const o = {};
       Object.keys(tdata)
         .filter((k) => k !== 'verb')
         .forEach((k) => o[k] = tdata[k]);
+      const {name, data} = applyVerbTransform(tdata.verb, o);
       const o2 = {};
-      o2[name] = o;
+      o2[name] = data;
       document.push(o2);
     }
     else if (Object.keys(tdata).length === 1) {
       // {'say': {..}}
-      document.push(tdata);
+      const key = Object.keys(tdata)[0];
+      const {name, data} = applyVerbTransform(key, tdata[key]);
+      const o2 = {};
+      o2[name] = data;
+      document.push(o2);
     }
     else {
       logger.info(tdata, 'malformed jambonz payload: missing verb property');
diff --git a/specs.json b/specs.json
index 206d8a4..78ecd85 100644
--- a/specs.json
+++ b/specs.json
@@ -427,33 +427,6 @@
       "url"
     ]
   },
-  "stream": {
-    "properties": {
-      "id": "string",
-      "actionHook": "object|string",
-      "auth": "#auth",
-      "finishOnKey": "string",
-      "maxLength": "number",
-      "metadata": "object",
-      "mixType": {
-        "type": "string",
-        "enum": ["mono", "stereo", "mixed"]
-      },
-      "passDtmf": "boolean",
-      "playBeep": "boolean",
-      "disableBidirectionalAudio": "boolean",
-      "bidirectionalAudio": "#bidirectionalAudio",
-      "sampleRate": "number",
-      "timeout": "number",
-      "transcribe": "#transcribe",
-      "url": "string",
-      "wsAuth": "#auth",
-      "earlyMedia": "boolean"
-    },
-    "required": [
-      "url"
-    ]
-  },
   "llm": {
     "properties": {
       "id": "string",
diff --git a/test/jambonz-verb-test.js b/test/jambonz-verb-test.js
index a7e724e..443682b 100644
--- a/test/jambonz-verb-test.js
+++ b/test/jambonz-verb-test.js
@@ -1,6 +1,6 @@
 const test = require('tape');
 const logger = require('pino')({level: process.env.JAMBONES_LOGLEVEL || 'error'});
-const { validate } = require('..');
+const { validate, normalizeJambones } = require('..');
 
 test("validate correct verbs", async (t) => {
 
@@ -664,6 +664,36 @@ test("validate correct verbs", async (t) => {
         }
       ]
     },
+    {
+      "verb": "s2s",
+      "vendor": "openai",
+      "llmOptions": {
+        "model": "gpt-4o-realtime"
+      }
+    },
+    {
+      "verb": "openai_s2s",
+      "llmOptions": {
+        "model": "gpt-4o-realtime"
+      }
+    },
+    {
+      "verb": "google_s2s",
+      "llmOptions": {
+        "model": "gemini-2.0-flash"
+      }
+    },
+    {
+      "verb": "elevenlabs_s2s",
+      "llmOptions": {
+        "agentId": "agent-123"
+      }
+    },
+    {
+      "verb": "stream",
+      "url": "wss://myrecorder.example.com/calls",
+      "mixType": "stereo"
+    },
     {
       "verb": "pipeline",
       "stt": {
@@ -728,6 +758,110 @@ test('invalid test', async (t) => {
   } catch(err) {
     t.ok(1 == 1,'successfully validate verbs');
   }
-  
+
   t.end();
-})
\ No newline at end of file
+});
+
+test('verb synonyms: stream is synonym for listen', async (t) => {
+  // "verb" format
+  const result1 = normalizeJambones(logger, [
+    {"verb": "stream", "url": "wss://example.com/calls", "mixType": "stereo"}
+  ]);
+  t.equal(Object.keys(result1[0])[0], 'listen', 'stream verb is rewritten to listen');
+  t.equal(result1[0].listen.url, 'wss://example.com/calls', 'data is preserved');
+
+  // object-key format
+  const result2 = normalizeJambones(logger, [
+    {"stream": {"url": "wss://example.com/calls"}}
+  ]);
+  t.equal(Object.keys(result2[0])[0], 'listen', 'stream key is rewritten to listen');
+
+  // validate passes
+  try {
+    validate(logger, [{"verb": "stream", "url": "wss://example.com/calls"}]);
+    t.pass('stream verb validates successfully');
+  } catch (err) {
+    t.fail('stream verb should validate: ' + err);
+  }
+  t.end();
+});
+
+test('verb synonyms: s2s is synonym for llm', async (t) => {
+  const result = normalizeJambones(logger, [
+    {"verb": "s2s", "vendor": "openai", "llmOptions": {"model": "gpt-4o"}}
+  ]);
+  t.equal(Object.keys(result[0])[0], 'llm', 's2s verb is rewritten to llm');
+  t.equal(result[0].llm.vendor, 'openai', 'vendor is preserved');
+  t.equal(result[0].llm.llmOptions.model, 'gpt-4o', 'llmOptions preserved');
+
+  try {
+    validate(logger, [{"verb": "s2s", "vendor": "openai", "llmOptions": {"model": "gpt-4o"}}]);
+    t.pass('s2s verb validates successfully');
+  } catch (err) {
+    t.fail('s2s verb should validate: ' + err);
+  }
+  t.end();
+});
+
+test('vendor shortcuts: openai_s2s injects vendor', async (t) => {
+  const result = normalizeJambones(logger, [
+    {"verb": "openai_s2s", "llmOptions": {"model": "gpt-4o-realtime"}}
+  ]);
+  t.equal(Object.keys(result[0])[0], 'llm', 'openai_s2s is rewritten to llm');
+  t.equal(result[0].llm.vendor, 'openai', 'vendor is injected');
+  t.equal(result[0].llm.llmOptions.model, 'gpt-4o-realtime', 'llmOptions preserved');
+
+  try {
+    validate(logger, [{"verb": "openai_s2s", "llmOptions": {"model": "gpt-4o-realtime"}}]);
+    t.pass('openai_s2s validates successfully');
+  } catch (err) {
+    t.fail('openai_s2s should validate: ' + err);
+  }
+  t.end();
+});
+
+test('vendor shortcuts: all vendors work', async (t) => {
+  const vendors = [
+    'openai', 'microsoft', 'google', 'elevenlabs', 'deepgram', 'voiceagent', 'ultravox'
+  ];
+  for (const vendor of vendors) {
+    const verbName = `${vendor}_s2s`;
+    const result = normalizeJambones(logger, [
+      {"verb": verbName, "llmOptions": {}}
+    ]);
+    t.equal(Object.keys(result[0])[0], 'llm', `${verbName} rewrites to llm`);
+    t.equal(result[0].llm.vendor, vendor, `${verbName} injects vendor=${vendor}`);
+  }
+  t.end();
+});
+
+test('vendor shortcuts: object-key format works', async (t) => {
+  const result = normalizeJambones(logger, [
+    {"google_s2s": {"llmOptions": {"model": "gemini-2.0-flash"}}}
+  ]);
+  t.equal(Object.keys(result[0])[0], 'llm', 'google_s2s key is rewritten to llm');
+  t.equal(result[0].llm.vendor, 'google', 'vendor is injected');
+  t.equal(result[0].llm.llmOptions.model, 'gemini-2.0-flash', 'llmOptions preserved');
+  t.end();
+});
+
+test('vendor shortcuts: explicit vendor in data overrides injected vendor', async (t) => {
+  const result = normalizeJambones(logger, [
+    {"verb": "openai_s2s", "vendor": "custom", "llmOptions": {}}
+  ]);
+  t.equal(result[0].llm.vendor, 'custom', 'explicit vendor takes precedence');
+  t.end();
+});
+
+test('non-synonym verbs are unchanged', async (t) => {
+  const result = normalizeJambones(logger, [
+    {"verb": "say", "text": "hello"}
+  ]);
+  t.equal(Object.keys(result[0])[0], 'say', 'say verb is not transformed');
+
+  const result2 = normalizeJambones(logger, [
+    {"llm": {"vendor": "openai", "llmOptions": {}}}
+  ]);
+  t.equal(Object.keys(result2[0])[0], 'llm', 'llm verb is not transformed');
+  t.end();
+});
\ No newline at end of file