List Events changedapi/beta/sessions/events/list
Nearest release: v2.1.294, published an hour after 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+83added
Lines−3removed
From line
1,475
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits20to this page, all time
The whole hunk
from line 1475, old and new numbered
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14751475
14761476 - `BetaManagedAgentsSessionThreadCreatedEvent object`
14771477
1478 Emitted when a subagent is spawned as a new thread. Written to the parent thread's output stream so clients observing the session see child creation.
1478 Emitted when a child thread is created. Written to the parent thread's output stream so clients observing the session see child creation.
14791479
14801480 - `type: "session.thread_created"`
14811481
from line 1951
19511951
19521952 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
19531953
1954 - `"claude-haiku-5-5"`
1955
1956 Fastest model for high-volume, real-time tasks
1957
19541958 - `"claude-sonnet-5-5"`
19551959
19561960 Efficient model for coding and agents
from line 2325
23212325
23222326 The server decides each tool call individually: it judges, from the tool, its input, and the session content so far, whether the call is safe to execute or high-risk, and evaluates it to allow when judged safe and to deny when judged high-risk. A call the server cannot reach a judgement on evaluates to ask.
23232327
2328 - `url_sources: BetaManagedAgentsWebFetchURLSources or null`
2329
2330 Which sources contribute URLs the tool may fetch, always in the object form. Null when not set, which allows every source.
2331
2332 - `client_tool_results: BetaManagedAgentsWebFetchURLSourceToolFilter or null`
2333
2334 Which custom tools' results contribute URLs that may be fetched. Null when not set, which allows every custom tool's results.
2335
2336 - `BetaManagedAgentsWebFetchURLSourceAll object`
2337
2338 Every URL from this source may be fetched. This is the default.
2339
2340 - `type: "all"`
2341
2342 - `BetaManagedAgentsWebFetchURLSourceNone object`
2343
2344 This source contributes no URLs that may be fetched.
2345
2346 - `type: "none"`
2347
2348 - `BetaManagedAgentsWebFetchURLSourceOnly object`
2349
2350 Only the named tools' results contribute URLs that may be fetched.
2351
2352 - `type: "only"`
2353
2354 - `tools: array of BetaManagedAgentsWebFetchURLSourceToolReference`
2355
2356 The tools whose results contribute. Between 1 and 128 entries, each with a different name. An empty list is rejected; use "none" to allow no tool's results.
2357
2358 - `type: "tool_reference"`
2359
2360 Must be "tool_reference".
2361
2362 - `name: string`
2363
2364 Name of the tool. Compared exactly, so upper and lower case letters are different.
2365
2366 minLength: 1, maxLength: 128
2367
2368 - `BetaManagedAgentsWebFetchURLSourceExcept object`
2369
2370 Every tool's results contribute URLs that may be fetched, except the named tools' results.
2371
2372 - `type: "except"`
2373
2374 - `tools: array of BetaManagedAgentsWebFetchURLSourceToolReference`
2375
2376 The tools whose results do not contribute. Between 1 and 128 entries, each with a different name. An empty list is rejected; use "all" to leave out no tool's results.
2377
2378 - `type: "tool_reference"`
2379
2380 Must be "tool_reference".
2381
2382 - `name: string`
2383
2384 Name of the tool. Compared exactly, so upper and lower case letters are different.
2385
2386 minLength: 1, maxLength: 128
2387
2388 - `server_tool_results: BetaManagedAgentsWebFetchURLSourceToolFilter or null`
2389
2390 Which of the web_search and web_fetch tools' results contribute URLs that may be fetched. Null when not set, which allows both.
2391
2392 - `user_input: BetaManagedAgentsWebFetchURLSourceUserInput or null`
2393
2394 Whether URLs in the text of user messages may be fetched. Null when not set, which allows them.
2395
2396 - `BetaManagedAgentsWebFetchURLSourceAll object`
2397
2398 Every URL from this source may be fetched. This is the default.
2399
2400 - `BetaManagedAgentsWebFetchURLSourceNone object`
2401
2402 This source contributes no URLs that may be fetched.
2403
23242404 - `allowed_domains: optional array of string`
23252405
23262406 - `blocked_domains: optional array of string`
from line 2760
26802760{
26812761 "data": [
26822762 {
2683 "id": "sevt_011CZkZGOp0iBcp4kaQSihUmy",
2763 "id": "sevt_011CZkZGPp1iBcp4kaQSihUm",
26842764 "content": [
26852765 {
26862766 "text": "Where is my order #1234?",
from line 2771
26912771 "processed_at": "2026-03-15T10:00:00Z"
26922772 },
26932773 {
2694 "id": "sevt_011CZkZHPq1jCdq5lbRTjiVnz",
2774 "id": "sevt_011CZkZHPq1jCdq5mbRTjiVn",
26952775 "content": [
26962776 {
26972777 "text": "Let me look up order #1234 for you.",
No line in this hunk matches that.