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

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api/beta/sessions/threads

Nearest release: v2.1.258, 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.

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Lines+71added
Lines−13removed
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First seen 14 Aug 2026 this site's first read of the page
Recorded edits12to this page, all time

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from line 20
2020 
2121- `page: optional string`
2222 
23 Opaque pagination cursor from a previous response's next_page. Forward-only.
23 Opaque pagination cursor from a previous response's `next_page`. Forward-only.
2424 
2525### Headers
2626 
from line 30
3030 
3131 - `string`
3232 
33 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
33 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
3434 
3535 - `"message-batches-2024-09-24"`
3636 
from line 114
114114 
115115 - `"ce-user-management-2026-07-13"`
116116 
117 - `"mid-conversation-output-config-2026-07-01"`
118 
119 - `"thinking-binding-controls-2026-08-01"`
120 
121 - `"mid-conversation-system-clear-at-2026-08-21"`
122 
117123### Returns
118124 
119125- `data: optional array of BetaManagedAgentsSessionThread`
from line 160
154160 
155161 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
156162 
157 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
163 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
158164 
159165 The model that will power your agent.
160166 
161167 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
162168 
169 - `"claude-fable-5-1"`
170 
171 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
172 
163173 - `"claude-sonnet-5"`
164174 
165175 High-performance model for coding and agents
from line 883
873883 
874884 - `string`
875885 
876 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
886 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
877887 
878888 - `"message-batches-2024-09-24"`
879889 
from line 967
957967 
958968 - `"ce-user-management-2026-07-13"`
959969 
970 - `"mid-conversation-output-config-2026-07-01"`
971 
972 - `"thinking-binding-controls-2026-08-01"`
973 
974 - `"mid-conversation-system-clear-at-2026-08-21"`
975 
960976### Returns
961977 
962978- `BetaManagedAgentsSessionThread object`
from line 1013
9971013 
9981014 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
9991015 
1000 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
1016 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
10011017 
10021018 The model that will power your agent.
10031019 
10041020 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
10051021 
1022 - `"claude-fable-5-1"`
1023 
1024 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1025 
10061026 - `"claude-sonnet-5"`
10071027 
10081028 High-performance model for coding and agents
from line 1727
17071727 
17081728 - `string`
17091729 
1710 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
1730 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
17111731 
17121732 - `"message-batches-2024-09-24"`
17131733 
from line 1811
17911811 
17921812 - `"ce-user-management-2026-07-13"`
17931813 
1814 - `"mid-conversation-output-config-2026-07-01"`
1815 
1816 - `"thinking-binding-controls-2026-08-01"`
1817 
1818 - `"mid-conversation-system-clear-at-2026-08-21"`
1819 
17941820### Returns
17951821 
17961822- `BetaManagedAgentsSessionThread object`
from line 1857
18311857 
18321858 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
18331859 
1834 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
1860 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
18351861 
18361862 The model that will power your agent.
18371863 
18381864 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
18391865 
1866 - `"claude-fable-5-1"`
1867 
1868 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1869 
18401870 - `"claude-sonnet-5"`
18411871 
18421872 High-performance model for coding and agents
from line 2594
25642594 
25652595 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
25662596 
2567 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
2597 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
25682598 
25692599 The model that will power your agent.
25702600 
25712601 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
25722602 
2603 - `"claude-fable-5-1"`
2604 
2605 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
2606 
25732607 - `"claude-sonnet-5"`
25742608 
25752609 High-performance model for coding and agents
from line 4774
47404774 
47414775 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
47424776 
4743 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
4777 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
47444778 
47454779 The model that will power your agent.
47464780 
47474781 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
47484782 
4783 - `"claude-fable-5-1"`
4784 
4785 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
4786 
47494787 - `"claude-sonnet-5"`
47504788 
47514789 High-performance model for coding and agents
from line 5520
54825520 
54835521 - `string`
54845522 
5485 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
5523 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
54865524 
54875525 - `"message-batches-2024-09-24"`
54885526 
from line 5604
55665604 
55675605 - `"ce-user-management-2026-07-13"`
55685606 
5607 - `"mid-conversation-output-config-2026-07-01"`
5608 
5609 - `"thinking-binding-controls-2026-08-01"`
5610 
5611 - `"mid-conversation-system-clear-at-2026-08-21"`
5612 
55695613#### Returns
55705614 
55715615- `data: optional array of BetaManagedAgentsSessionEvent`
from line 7082
70387082 
70397083 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
70407084 
7041 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
7085 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
70427086 
70437087 The model that will power your agent.
70447088 
70457089 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
70467090 
7091 - `"claude-fable-5-1"`
7092 
7093 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
7094 
70477095 - `"claude-sonnet-5"`
70487096 
70497097 High-performance model for coding and agents
from line 7806
77587806 
77597807 - `string`
77607808 
7761 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
7809 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
77627810 
77637811 - `"message-batches-2024-09-24"`
77647812 
from line 7890
78427890 
78437891 - `"ce-user-management-2026-07-13"`
78447892 
7893 - `"mid-conversation-output-config-2026-07-01"`
7894 
7895 - `"thinking-binding-controls-2026-08-01"`
7896 
7897 - `"mid-conversation-system-clear-at-2026-08-21"`
7898 
78457899#### Returns
78467900 
78477901- `BetaManagedAgentsStreamSessionThreadEvents = BetaManagedAgentsUserMessageEvent or BetaManagedAgentsUserInterruptEvent or BetaManagedAgentsUserToolConfirmationEvent or 34 more`
from line 9266
92129266 
92139267 The id of the `agent.tool_use` event this result corresponds to, which can be found in the last `session.status_idle` [event's](https://platform.claude.com/docs/en/api/beta/sessions/events/list#beta_managed_agents_session_requires_action.event_ids) `stop_reason.event_ids` field.
92149268 
9215 - `type: "user.tool_result"`
9216 
9217 - `content: optional array of BetaManagedAgentsTextBlock or BetaManagedAgentsImageBlock or BetaManagedAgentsDocumentBlock or BetaManagedAgentsSearchResultBlock`
9218 
9219 The result content returned by the tool.
9220 
9221 - `BetaManagedAgentsTextBlock object`
9222 
9223 Regular text content.
9224 
9225 - `BetaManagedAgentsImageBlock object`
9226 
9227 Image content specified directly as base64 data or as a reference via a URL.
9228 
9229 - `BetaManagedAgentsDocumentBlock object`
9230 
9231 Document content, either specified directly as base64 data, as text, or as a reference via a URL.
9232 
9233 - `BetaManagedAgentsSearchResultBlock object`
9234 
9235 A block containing a web search result.
9236 
9237 - `is_error: optional boolean or null`
9238 
9239 Whether the tool execution resulted in an error.
9240 
9241 - `processed_at: optional string or null`
9242 
9243 A timestamp in RFC 3339 format
9244 
9245 format: date-time
9246 
9247 - `session_thread_id: optional string or null`
9248 
9249 Routes this result to a subagent thread. Copy from the `agent.tool_use` event's `session_thread_id`.
9250 
9251 - `BetaManagedAgentsSessionThreadStatusRescheduledEvent object`
9252 
9253 A session thread hit a transient error and is retrying automatically. Emitted on the thread's own stream and cross-posted to the primary stream for child threads.
9254 
9255 - `id: string`
9256 
9257 Unique identifier for this event.
9258 
9259 - `agent_name: string`
9260 
9261 Name of the agent the thread runs.
9262 
9263 - `processed_at: string`
9264 
9265 A timestamp in RFC 3339 format
9266 
9267 format: date-time
9268 
9269 - `session_thread_id: string`
9270 
9271 Public sthr_ ID of the thread that is retrying.
9272 
9273 - `type: "session.thread_status_rescheduled"`
9274 
9275 - `BetaManagedAgentsSessionUpdatedEvent object`
9276 
9277 Emit
9269 - `type: