Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · api

browser-use-tool changed

agents-and-tools/tool-use/browser-use-tool

Nearest release: v2.1.280, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+11added
Lines−10removed
From line 12 where the diff opens
First seen 20 Aug 2026 this site's first read of the page
Recorded edits10to this page, all time

The whole hunk

from line 12, old and new numbered
/
lines
from line 12
1212 - claude-mythos-5-1
1313 - claude-fable-5
1414 - claude-mythos-5
15 - claude-opus-5-5
1516 - claude-opus-5
1617 - claude-sonnet-5
1718 - claude-opus-4-8
from line 43
4243 -H "x-api-key: $ANTHROPIC_API_KEY" \
4344 -H "anthropic-version: 2023-06-01" \
4445 -d '{
45 "model": "claude-opus-5",
46 "model": "claude-opus-5-5",
4647 "max_tokens": 2048,
4748 "tools": [
4849 {
from line 61
6061 
6162 ```bash CLI
6263 ant messages create <<'YAML'
63 model: claude-opus-5
64 model: claude-opus-5-5
6465 max_tokens: 2048
6566 tools:
6667 - type: browser_toolset_20260801
from line 75
7475 client = anthropic.Anthropic()
7576 
7677 response = client.messages.create(
77 model="claude-opus-5",
78 model="claude-opus-5-5",
7879 max_tokens=2048,
7980 tools=[{"type": "browser_toolset_20260801"}],
8081 messages=[
from line 92
9192 const client = new Anthropic();
9293 
9394 const response = await client.messages.create({
94 model: "claude-opus-5",
95 model: "claude-opus-5-5",
9596 max_tokens: 2048,
9697 tools: [{ type: "browser_toolset_20260801" }],
9798 messages: [
from line 111
110111 
111112 var parameters = new MessageCreateParams
112113 {
113 Model = Model.ClaudeOpus5,
114 Model = Model.ClaudeOpus5_5,
114115 MaxTokens = 2048,
115116 Tools = [new BrowserToolset20260801()],
116117 Messages =
from line 132
131132 client := anthropic.NewClient()
132133 
133134 response, err := client.Messages.New(context.TODO(), anthropic.MessageNewParams{
134 Model: anthropic.ModelClaudeOpus5,
135 Model: anthropic.ModelClaudeOpus5_5,
135136 MaxTokens: 2048,
136137 Tools: []anthropic.ToolUnionParam{
137138 {OfBrowserToolset20260801: &anthropic.BrowserToolset20260801Param{}},
from line 155
154155 AnthropicClient client = AnthropicOkHttpClient.fromEnv();
155156 
156157 MessageCreateParams params = MessageCreateParams.builder()
157 .model(Model.CLAUDE_OPUS_5)
158 .model(Model.CLAUDE_OPUS_5_5)
158159 .maxTokens(2048L)
159160 .addTool(BrowserToolset20260801.builder().build())
160161 .addUserMessage("Open example.com/docs and tell me how to get started.")
from line 174
173174 messages: [
174175 ['role' => 'user', 'content' => 'Open example.com/docs and tell me how to get started.'],
175176 ],
176 model: 'claude-opus-5',
177 model: 'claude-opus-5-5',
177178 tools: [
178179 ['type' => 'browser_toolset_20260801'],
179180 ],
from line 187
186187 client = Anthropic::Client.new
187188 
188189 response = client.messages.create(
189 model: "claude-opus-5",
190 model: "claude-opus-5-5",
190191 max_tokens: 2048,
191192 tools: [
192193 { type: "browser_toolset_20260801" }
from line 211
210211 "id": "msg_01HCDu4XSTLzTAcodEQ58vDo",
211212 "type": "message",
212213 "role": "assistant",
213 "model": "claude-opus-5",
214 "model": "claude-opus-5-5",
214215 "content": [
215216 {
216217 "type": "text",