examples: add gpt-oss browser example

Author: ParthSareen

examples/README.md

@@ -30,6 +30,7 @@ See [ollama/docs/api.md](https://github.com/ollama/ollama/blob/main/docs/api.md)
  #### gpt-oss
 - [gpt-oss-tools.py](gpt-oss-tools.py) - Using tools with gpt-oss
 - [gpt-oss-tools-stream.py](gpt-oss-tools-stream.py) - Using tools with gpt-oss, with streaming enabled
+- [gpt-oss-tools-browser.py](gpt-oss-tools-browser.py) - Using browser tools with gpt-oss
 
 
 ### Multimodal with Images - Chat with a multimodal (image chat) model

examples/gpt-oss-tools-browser.py

@@ -0,0 +1,180 @@
+# /// script
+# requires-python = ">=3.11"
+# dependencies = [
+#     "gpt-oss",
+#     "ollama",
+# ]
+# ///
+
+import asyncio
+import json
+from typing import Optional
+
+from gpt_oss.tools.simple_browser import ExaBackend, SimpleBrowserTool
+from openai_harmony import Author, Role, TextContent
+from openai_harmony import Message as HarmonyMessage
+
+from ollama import Client
+
+_backend = ExaBackend(source='web')
+_browser_tool = SimpleBrowserTool(backend=_backend)
+
+
+def heading(text):
+  print(text)
+  print('=' * (len(text) +3))
+
+
+async def _browser_search_async(query: str, topn: int = 10, source: str | None = None) -> str:
+  # map Ollama message to Harmony format
+  harmony_message = HarmonyMessage(
+    author=Author(role=Role.USER),
+    content=[TextContent(text=json.dumps({'query': query, 'topn': topn}))],
+    recipient='browser.search',
+  )
+
+  result_text: str = ''
+  async for response in _browser_tool._process(harmony_message):
+    if response.content:
+      for content in response.content:
+        if isinstance(content, TextContent):
+          result_text += content.text
+  return result_text or f'No results for query: {query}'
+
+
+async def _browser_open_async(id: int | str = -1, cursor: int = -1, loc: int = -1, num_lines: int = -1, *, view_source: bool = False, source: str | None = None) -> str:
+  payload = {
+    'id': id,
+    'cursor': cursor,
+    'loc': loc,
+    'num_lines': num_lines,
+    'view_source': view_source,
+    'source': source
+  }
+
+  harmony_message = HarmonyMessage(
+    author=Author(role=Role.USER),
+    content=[TextContent(text=json.dumps(payload))],
+    recipient='browser.open',
+  )
+
+  result_text: str = ''
+  async for response in _browser_tool._process(harmony_message):
+    if response.content:
+      for content in response.content:
+        if isinstance(content, TextContent):
+          result_text += content.text
+  return result_text or f'Could not open: {id}'
+
+
+async def _browser_find_async(pattern: str, cursor: int = -1) -> str:
+  payload = {'pattern': pattern, 'cursor': cursor}
+
+  harmony_message = HarmonyMessage(
+    author=Author(role=Role.USER),
+    content=[TextContent(text=json.dumps(payload))],
+    recipient='browser.find',
+  )
+
+  result_text: str = ''
+  async for response in _browser_tool._process(harmony_message):
+    if response.content:
+      for content in response.content:
+        if isinstance(content, TextContent):
+          result_text += content.text
+  return result_text or f'Pattern not found: {pattern}'
+
+
+def browser_search(query: str, topn: int = 10, source: Optional[str] = None) -> str:
+  return asyncio.run(_browser_search_async(query=query, topn=topn, source=source))
+
+
+def browser_open(id: int | str = -1, cursor: int = -1, loc: int = -1, num_lines: int = -1, *, view_source: bool = False, source: Optional[str] = None) -> str:
+  return asyncio.run(_browser_open_async(id=id, cursor=cursor, loc=loc, num_lines=num_lines, view_source=view_source, source=source))
+
+
+def browser_find(pattern: str, cursor: int = -1) -> str:
+  return asyncio.run(_browser_find_async(pattern=pattern, cursor=cursor))
+
+
+model = 'gpt-oss:20b'
+
+# Schema definitions for each browser tool
+browser_search_schema = {
+  'type': 'function',
+  'function': {
+    'name': 'browser.search',
+  },
+}
+
+browser_open_schema = {
+  'type': 'function',
+  'function': {
+    'name': 'browser.open',
+  },
+}
+
+browser_find_schema = {
+  'type': 'function',
+  'function': {
+    'name': 'browser.find',
+  },
+}
+
+available_tools = {
+  'browser.search': browser_search,
+  'browser.open': browser_open,
+  'browser.find': browser_find,
+}
+
+
+prompt = 'What is Ollama?'
+print('You: ', prompt, '\n')
+messages = [{'role': 'user', 'content': prompt}]
+
+client = Client()
+while True:
+  response = client.chat(
+    model=model,
+    messages=messages,
+    tools=[browser_search_schema, browser_open_schema, browser_find_schema],
+    options={'num_ctx': 8192} # 8192 is the recommended lower limit for the context window
+  )
+
+  if hasattr(response.message, 'thinking') and response.message.thinking:
+    heading('Thinking')
+    print(response.message.thinking.strip() + '\n')
+
+  if hasattr(response.message, 'content') and response.message.content:
+    heading('Assistant')
+    print(response.message.content.strip() + '\n')
+
+  # add message to chat history
+  messages.append(response.message)
+
+  if response.message.tool_calls:
+    for tool_call in response.message.tool_calls:
+      tool_name = tool_call.function.name
+      args = tool_call.function.arguments or {}
+      function_to_call = available_tools.get(tool_name)
+      if not function_to_call:
+        print(f'Unknown tool: {tool_name}')
+        continue
+
+      try:
+        result = function_to_call(**args)
+        heading(f'Tool: {tool_name}')
+        if args:
+          print(f'Arguments: {args}')
+        print(result[:200])
+        if len(result) > 200:
+          print('... [truncated]')
+        print()
+        messages.append({'role': 'tool', 'content': result, 'tool_name': tool_name})
+      except Exception as e:
+        err = f'Error from {tool_name}: {e}'
+        print(err)
+        messages.append({'role': 'tool', 'content': err, 'tool_name': tool_name})
+  else:
+    # break on no more tool calls
+    break