Sessions changedapi/beta/sessions
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Lines+136added
Lines−2removed
From line
129
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14 Aug 2026
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Recorded edits32to this page, all time
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129129
130130 - `"webhooks-2026-10-07"`
131131
132 - `"admin-user-sign-out-2026-10-08"`
133
132134 - `"message-threads-2026-08-12"`
133135
134136 - `"analytics-usage-cost-2026-08-24"`
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201203
202204 Replacement model. Accepts the model string, e.g. `claude-opus-5-5`, or a `model_config` object. Omit to use the agent's model.
203205
204 - `BetaManagedAgentsModel = "claude-haiku-5-5" or "claude-sonnet-5-5" or "claude-opus-5-5" or 14 more or string`
206 - `BetaManagedAgentsModel = "claude-fable-5-2" or "claude-haiku-5-5" or "claude-sonnet-5-5" or 15 more or string`
205207
206208 The model that will power your agent.
207209
208210 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
209211
212 - `"claude-fable-5-2"`
213
214 Built for the most ambitious work in coding, enterprise workflows, and the sciences
215
210216 - `"claude-haiku-5-5"`
211217
212218 Fastest model for high-volume, real-time tasks
from line 1335
13291335
13301336 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
13311337
1338 - `"claude-fable-5-2"`
1339
1340 Built for the most ambitious work in coding, enterprise workflows, and the sciences
1341
13321342 - `"claude-haiku-5-5"`
13331343
13341344 Fastest model for high-volume, real-time tasks
from line 2865
28552865
28562866 - `"webhooks-2026-10-07"`
28572867
2868 - `"admin-user-sign-out-2026-10-08"`
2869
28582870 - `"message-threads-2026-08-12"`
28592871
28602872 - `"analytics-usage-cost-2026-08-24"`
from line 2937
29252937
29262938 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
29272939
2940 - `"claude-fable-5-2"`
2941
2942 Built for the most ambitious work in coding, enterprise workflows, and the sciences
2943
29282944 - `"claude-haiku-5-5"`
29292945
29302946 Fastest model for high-volume, real-time tasks
from line 4382
43664382
43674383 - `"webhooks-2026-10-07"`
43684384
4385 - `"admin-user-sign-out-2026-10-08"`
4386
43694387 - `"message-threads-2026-08-12"`
43704388
43714389 - `"analytics-usage-cost-2026-08-24"`
from line 4454
44364454
44374455 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
44384456
4457 - `"claude-fable-5-2"`
4458
4459 Built for the most ambitious work in coding, enterprise workflows, and the sciences
4460
44394461 - `"claude-haiku-5-5"`
44404462
44414463 Fastest model for high-volume, real-time tasks
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58635885
58645886 - `"webhooks-2026-10-07"`
58655887
5888 - `"admin-user-sign-out-2026-10-08"`
5889
58665890 - `"message-threads-2026-08-12"`
58675891
58685892 - `"analytics-usage-cost-2026-08-24"`
from line 6543
65196543
65206544 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
65216545
6546 - `"claude-fable-5-2"`
6547
6548 Built for the most ambitious work in coding, enterprise workflows, and the sciences
6549
65226550 - `"claude-haiku-5-5"`
65236551
65246552 Fastest model for high-volume, real-time tasks
from line 7978
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79517979 - `"webhooks-2026-10-07"`
79527980
7981 - `"admin-user-sign-out-2026-10-08"`
7982
79537983 - `"message-threads-2026-08-12"`
79547984
79557985 - `"analytics-usage-cost-2026-08-24"`
from line 8133
81038133
81048134 - `"thinking-binding-controls-2026-08-01"`
81058135
8106 - `"mid-conversation-system-clear-at-2026-08-21"`
8107
8108 - `"compact-2026-09-04"`
8109
8110 - `"inline-tools-2026-09-15"`
8111
8112 - `"mcp-client-2026-09-15"`
8113
8114 - `"ce-plugins-2026-09-01"`
8115
8116 - `"spend-limit-reads-2026-09-26"`
8117
8118 - `"telemetry-destinations-2026-08-11"`
8119
8120 - `"webhooks-2026-10-07"`
8121
8122 - `"message-threads-2026-08-12"`
8123
8124 - `"analytics-usage-cost-2026-08-24"`
8125
8126 - `"experimental-claude-tag-2026-10-21"`
8127
8128- `"anthropic-workspace-id": optional string`
8129
8130 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
8131
8132 Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.
8133
8134### Returns
8135
8136- `BetaManagedAgentsSession object`
8137
8138 A Managed Agents `se
8136 -
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