Create Agent changedapi/beta/agents/create
Nearest release: v2.1.286, 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+834added
Lines−852removed
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17
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First seen
14 Aug 2026
this site's first read of the page
Recorded edits15to this page, all time
The whole hunk
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1717
1818 - `string`
1919
20 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
20 - `"message-batches-2024-09-24"`
2121
22 - `"message-batches-2024-09-24"`
22 - `"prompt-caching-2024-07-31"`
2323
24 - `"prompt-caching-2024-07-31"`
24 - `"computer-use-2024-10-22"`
2525
26 - `"computer-use-2024-10-22"`
26 - `"computer-use-2025-01-24"`
2727
28 - `"computer-use-2025-01-24"`
28 - `"pdfs-2024-09-25"`
2929
30 - `"pdfs-2024-09-25"`
30 - `"token-counting-2024-11-01"`
3131
32 - `"token-counting-2024-11-01"`
32 - `"token-efficient-tools-2025-02-19"`
3333
34 - `"token-efficient-tools-2025-02-19"`
34 - `"output-128k-2025-02-19"`
3535
36 - `"output-128k-2025-02-19"`
36 - `"files-api-2025-04-14"`
3737
38 - `"files-api-2025-04-14"`
38 - `"mcp-client-2025-04-04"`
3939
40 - `"mcp-client-2025-04-04"`
40 - `"mcp-client-2025-11-20"`
4141
42 - `"mcp-client-2025-11-20"`
42 - `"dev-full-thinking-2025-05-14"`
4343
44 - `"dev-full-thinking-2025-05-14"`
44 - `"interleaved-thinking-2025-05-14"`
4545
46 - `"interleaved-thinking-2025-05-14"`
46 - `"code-execution-2025-05-22"`
4747
48 - `"code-execution-2025-05-22"`
48 - `"extended-cache-ttl-2025-04-11"`
4949
50 - `"extended-cache-ttl-2025-04-11"`
50 - `"context-1m-2025-08-07"`
5151
52 - `"context-1m-2025-08-07"`
52 - `"context-management-2025-06-27"`
5353
54 - `"context-management-2025-06-27"`
54 - `"model-context-window-exceeded-2025-08-26"`
5555
56 - `"model-context-window-exceeded-2025-08-26"`
56 - `"skills-2025-10-02"`
5757
58 - `"skills-2025-10-02"`
58 - `"fast-mode-2026-02-01"`
5959
60 - `"fast-mode-2026-02-01"`
60 - `"output-300k-2026-03-24"`
6161
62 - `"output-300k-2026-03-24"`
62 - `"user-profiles-2026-03-24"`
6363
64 - `"user-profiles-2026-03-24"`
64 - `"user-profiles-2026-08-18"`
6565
66 - `"user-profiles-2026-08-18"`
66 - `"user-profiles-2026-09-04"`
6767
68 - `"user-profiles-2026-09-04"`
68 - `"advisor-tool-2026-03-01"`
6969
70 - `"advisor-tool-2026-03-01"`
70 - `"managed-agents-2026-04-01"`
7171
72 - `"managed-agents-2026-04-01"`
72 - `"cache-diagnosis-2026-04-07"`
7373
74 - `"cache-diagnosis-2026-04-07"`
74 - `"dreaming-2026-04-21"`
7575
76 - `"dreaming-2026-04-21"`
76 - `"thinking-token-count-2026-05-13"`
7777
78 - `"thinking-token-count-2026-05-13"`
78 - `"server-side-fallback-2026-06-01"`
7979
80 - `"server-side-fallback-2026-06-01"`
80 - `"server-side-fallback-2026-07-01"`
8181
82 - `"server-side-fallback-2026-07-01"`
82 - `"fallback-credit-2026-06-01"`
8383
84 - `"fallback-credit-2026-06-01"`
84 - `"fallback-credit-2026-07-01"`
8585
86 - `"fallback-credit-2026-07-01"`
86 - `"agent-memory-2026-07-22"`
8787
88 - `"agent-memory-2026-07-22"`
88 - `"mid-conversation-tool-changes-2026-07-01"`
8989
90 - `"mid-conversation-tool-changes-2026-07-01"`
90 - `"compact-2026-01-12"`
9191
92 - `"compact-2026-01-12"`
92 - `"computer-use-2025-11-24"`
9393
94 - `"computer-use-2025-11-24"`
94 - `"mcp-tunnels-2026-06-22"`
9595
96 - `"mcp-tunnels-2026-06-22"`
96 - `"structured-outputs-2025-11-13"`
9797
98 - `"structured-outputs-2025-11-13"`
98 - `"task-budgets-2026-03-13"`
9999
100 - `"task-budgets-2026-03-13"`
100 - `"thinking-display-updates-2026-08-18"`
101101
102 - `"thinking-display-updates-2026-08-18"`
102 - `"ce-user-management-2026-07-13"`
103103
104 - `"ce-user-management-2026-07-13"`
104 - `"mid-conversation-output-config-2026-07-01"`
105105
106 - `"mid-conversation-output-config-2026-07-01"`
106 - `"thinking-binding-controls-2026-08-01"`
107107
108 - `"thinking-binding-controls-2026-08-01"`
108 - `"mid-conversation-system-clear-at-2026-08-21"`
109109
110 - `"mid-conversation-system-clear-at-2026-08-21"`
110 - `"compact-2026-09-04"`
111111
112 - `"compact-2026-09-04"`
112 - `"inline-tools-2026-09-15"`
113113
114 - `"inline-tools-2026-09-15"`
114 - `"mcp-client-2026-09-15"`
115115
116 - `"mcp-client-2026-09-15"`
117
118116- `"anthropic-workspace-id": optional string`
119117
120118 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 131
133131
134132 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
135133
136 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
134 - `"claude-sonnet-5-5"`
137135
138 The model that will power your agent.
136 Efficient model for coding and agents
139137
140 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
138 - `"claude-opus-5-5"`
141139
142 - `"claude-sonnet-5-5"`
140 Powerful intelligence for coding, knowledge work, and long-running agents
143141
144 Efficient model for coding and agents
142 - `"claude-fable-5-1"`
145143
146 - `"claude-opus-5-5"`
144 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
147145
148 Powerful intelligence for coding, knowledge work, and long-running agents
146 - `"claude-sonnet-5"`
149147
150 - `"claude-fable-5-1"`
148 Efficient model for coding and agents
151149
152 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
150 - `"claude-fable-5"`
153151
154 - `"claude-sonnet-5"`
152 Next generation of intelligence for the hardest knowledge work and coding problems
155153
156 Efficient model for coding and agents
154 - `"claude-opus-5"`
157155
158 - `"claude-fable-5"`
156 Powerful intelligence for long-running agents and coding
159157
160 Next generation of intelligence for the hardest knowledge work and coding problems
158 - `"claude-opus-4-8"`
161159
162 - `"claude-opus-5"`
160 Powerful intelligence for long-running agents and coding
163161
164 Powerful intelligence for long-running agents and coding
162 - `"claude-opus-4-7"`
165163
166 - `"claude-opus-4-8"`
164 Powerful intelligence for long-running agents and coding
167165
168 Powerful intelligence for long-running agents and coding
166 - `"claude-opus-4-6"`
169167
170 - `"claude-opus-4-7"`
168 Powerful intelligence for long-running agents and coding
171169
172 Powerful intelligence for long-running agents and coding
170 - `"claude-sonnet-4-6"`
173171
174 - `"claude-opus-4-6"`
172 Best combination of speed and intelligence
175173
176 Powerful intelligence for long-running agents and coding
174 - `"claude-haiku-4-5"`
177175
178 - `"claude-sonnet-4-6"`
176 Fastest model with near-frontier intelligence
179177
180 Best combination of speed and intelligence
178 - `"claude-haiku-4-5-20251001"`
181179
182 - `"claude-haiku-4-5"`
180 Fastest model with near-frontier intelligence
183181
184 Fastest model with near-frontier intelligence
182 - `"claude-opus-4-5"`
185183
186 - `"claude-haiku-4-5-20251001"`
184 Powerful intelligence for long-running agents and coding
187185
188 Fastest model with near-frontier intelligence
186 - `"claude-opus-4-5-20251101"`
189187
190 - `"claude-opus-4-5"`
188 Powerful intelligence for long-running agents and coding
191189
192 Powerful intelligence for long-running agents and coding
190 - `"claude-sonnet-4-5"`
193191
194 - `"claude-opus-4-5-20251101"`
192 High-performance model for agents and coding
195193
196 Powerful intelligence for long-running agents and coding
194 - `"claude-sonnet-4-5-20250929"`
197195
198 - `"claude-sonnet-4-5"`
196 High-performance model for agents and coding
199197
200 High-performance model for agents and coding
201
202 - `"claude-sonnet-4-5-20250929"`
203
204 High-performance model for agents and coding
205
206198 - `string`
207199
208200 - `BetaManagedAgentsModelConfigParams object`
from line 211
219211
220212 How hard Claude works on each inference call. Accepts a bare level string (`"high"`) or `{"type": "high"}`. On create, omitting it resolves the per-model default; on update, omitting it leaves the stored value unchanged.
221213
222 - `BetaManagedAgentsEffortLevel = "low" or "medium" or "high" or 2 more`
214 - `"low"`
223215
224 How hard Claude works on each turn. Higher levels favor reasoning depth over latency. Not all models accept every level; invalid combinations are rejected at create time.
216 Low effort. Favors latency over reasoning depth.
225217
226 - `"low"`
218 - `"medium"`
227219
228 Low effort. Favors latency over reasoning depth.
220 Medium effort. Balances latency and reasoning depth.
229221
230 - `"medium"`
222 - `"high"`
231223
232 Medium effort. Balances latency and reasoning depth.
224 High effort. Favors reasoning depth.
233225
234 - `"high"`
226 - `"xhigh"`
235227
236 High effort. Favors reasoning depth.
228 Extra-high effort. Not all models accept this level.
237229
238 - `"xhigh"`
230 - `"max"`
239231
240 Extra-high effort. Not all models accept this level.
232 Maximum effort. Favors reasoning depth over latency.
241233
242 - `"max"`
243
244 Maximum effort. Favors reasoning depth over latency.
245
246234 - `BetaManagedAgentsEffortLow object`
247235
248236 Low effort. Favors latency over reasoning depth.
from line 875
887875
888876 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
889877
890 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
878 - `"claude-sonnet-5-5"`
891879
892 The model that will power your agent.
880 Efficient model for coding and agents
893881
894 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
882 - `"claude-opus-5-5"`
895883
896 - `"claude-sonnet-5-5"`
884 Powerful intelligence for coding, knowledge work, and long-running agents
897885
898 Efficient model for coding and agents
886 - `"claude-fable-5-1"`
899887
900 - `"claude-opus-5-5"`
888 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
901889
902 Powerful intelligence for coding, knowledge work, and long-running agents
890 - `"claude-sonnet-5"`
903891
904 - `"claude-fable-5-1"`
892 Efficient model for coding and agents
905893
906 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
894 - `"claude-fable-5"`
907895
908 - `"claude-sonnet-5"`
896 Next generation of intelligence for the hardest knowledge work and coding problems
909897
910 Efficient model for coding and agents
898 - `"claude-opus-5"`
911899
912 - `"claude-fable-5"`
900 Powerful intelligence for long-running agents and coding
913901
914 Next generation of intelligence for the hardest knowledge work and coding problems
902 - `"claude-opus-4-8"`
915903
916 - `"claude-opus-5"`
904 Powerful intelligence for long-running agents and coding
917905
918 Powerful intelligence for long-running agents and coding
906 - `"claude-opus-4-7"`
919907
920 - `"claude-opus-4-8"`
908 Powerful intelligence for long-running agents and coding
921909
922 Powerful intelligence for long-running agents and coding
910 - `"claude-opus-4-6"`
923911
924 - `"claude-opus-4-7"`
912 Powerful intelligence for long-running agents and coding
925913
926 Powerful intelligence for long-running agents and coding
914 - `"claude-sonnet-4-6"`
927915
928 - `"claude-opus-4-6"`
916 Best combination of speed and intelligence
929917
930 Powerful intelligence for long-running agents and coding
918 - `"claude-haiku-4-5"`
931919
932 - `"claude-sonnet-4-6"`
920 Fastest model with near-frontier intelligence
933921
934 Best combination of speed and intelligence
922 - `"claude-haiku-4-5-20251001"`
935923
936 - `"claude-haiku-4-5"`
924 Fastest model with near-frontier intelligence
937925
938 Fastest model with near-frontier intelligence
926 - `"claude-opus-4-5"`
939927
940 - `"claude-haiku-4-5-20251001"`
928 Powerful intelligence for long-running agents and coding
941929
942 Fastest model with near-frontier intelligence
930 - `"claude-opus-4-5-20251101"`
943931
944 - `"claude-opus-4-5"`
932 Powerful intelligence for long-running agents and coding
945933
946 Powerful intelligence for long-running agents and coding
934 - `"claude-sonnet-4-5"`
947935
948 - `"claude-opus-4-5-20251101"`
936 High-performance model for agents and coding
949937
950 Powerful intelligence for long-running agents and coding
938 - `"claude-sonnet-4-5-20250929"`
951939
952 - `"claude-sonnet-4-5"`
953
954 High-performance model for agents and coding
955
956 - `"claude-sonnet-4-5-20250929"`
957
958 High-performance model for agents and coding
940 High-performance model for agents and coding
959941
960942 - `string`
961943
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