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Sweep 28 Aug 2026 ยท 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

One change

Agents

api/beta/agents

first seen The page's own history The capture it came from

Nearest release: v2.1.238, published under 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.

api/beta/agents Changed · +27 / -15 lines

from line 19
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 65
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 93
 
 - `model: BetaManagedAgentsModel or BetaManagedAgentsModelConfigParams`
 
-  Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison), e.g. `claude-opus-4-6`, or a `model_config` object for additional configuration control
+  Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison), e.g. `claude-opus-5`, or a `model_config` object for additional configuration control
 
   - `BetaManagedAgentsModel = "claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more or string`
 
from line 904
     -H 'anthropic-beta: managed-agents-2026-04-01' \
     -H "X-Api-Key: $ANTHROPIC_API_KEY" \
     -d '{
-          "model": "claude-sonnet-4-6",
+          "model": "claude-opus-5",
           "name": "My First Agent",
           "description": "A general-purpose starter agent.",
           "metadata": {
from line 938
     "foo": "bar"
   },
   "model": {
-    "id": "claude-sonnet-4-6",
+    "id": "claude-opus-5",
     "effort": {
       "type": "low"
     },
from line 1031
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 1077
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 1507
         "foo": "bar"
       },
       "model": {
-        "id": "claude-sonnet-4-6",
+        "id": "claude-opus-5",
         "effort": {
           "type": "low"
         },
from line 1591
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 1637
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 2061
     "foo": "bar"
   },
   "model": {
-    "id": "claude-sonnet-4-6",
+    "id": "claude-opus-5",
     "effort": {
       "type": "low"
     },
from line 2136
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 2182
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 2234
 
 - `model: optional BetaManagedAgentsModel or BetaManagedAgentsModelConfigParams`
 
-  Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison), e.g. `claude-opus-4-6`, or a `model_config` object for additional configuration control. Omit to preserve. Cannot be cleared.
+  Model identifier. Accepts the [model string](https://platform.claude.com/docs/en/about-claude/models/overview#latest-models-comparison), e.g. `claude-opus-5`, or a `model_config` object for additional configuration control. Omit to preserve. Cannot be cleared.
 
   - `BetaManagedAgentsModel = "claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more or string`
 
from line 3050
     "foo": "bar"
   },
   "model": {
-    "id": "claude-sonnet-4-6",
+    "id": "claude-opus-5",
     "effort": {
       "type": "low"
     },
from line 3125
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 3171
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 3596
     "foo": "bar"
   },
   "model": {
-    "id": "claude-sonnet-4-6",
+    "id": "claude-opus-5",
     "effort": {
       "type": "low"
     },
from line 5779
 
   - `string`
 
-  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 30 more`
+  - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 31 more`
 
     - `"message-batches-2024-09-24"`
 
from line 5825
 
     - `"user-profiles-2026-03-24"`
 
+    - `"user-profiles-2026-08-18"`
+
     - `"advisor-tool-2026-03-01"`
 
     - `"managed-agents-2026-04-01"`
from line 6255
         "foo": "bar"
       },
       "model": {
-        "id": "claude-sonnet-4-6",
+        "id": "claude-opus-5",
         "effort": {
           "type": "low"
         },