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

Messages changed

api/compliance/apps/sessions/local/messages

Nearest release: v2.1.272, published 5 hours before 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+17added
Lines−18removed
From line 59 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits8to this page, all time

The whole hunk

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5959 
6060### Headers
6161 
62- `"anthropic-version": optional string`
63 
64 The version of the Claude API you want to use.
65 
66 Read more about versioning and our version history [here](https://platform.claude.com/docs/en/api/versioning).
67 
6862- `"x-api-key": optional string`
6963 
7064### Returns
from line 204
210204 A transcript marker generated by the endpoint rather than sent by
211205 either party during the session. Marker messages indicate that the
212206 prompt history diverged from what was captured, that the request's
213 `system` field was present but is not shown, or that
214 prompt-carried history was suppressed because the session spans the
215 child organization's retention boundary and those turns cannot be
216 placed against it (the marker's text names the cause). Markers that
217 report a mismatch with captured history can result from normal request
218 or client processing, not only client modification.
207 `system` field was present but is not shown, or that earlier turns
208 that a request re-sent as history were withheld because they cannot
209 be dated against the child organization's data-retention period
210 (only for organizations with a finite retention period; the request's
211 new user input after its last assistant turn is not affected). The
212 marker's text names the cause. Markers that report a mismatch with
213 captured history can result from normal request or client processing,
214 not only client modification.
219215 
220216 - `type: "synthetic_marker"`
221217 
from line 287
291287 
292288```bash
293289curl https://api.anthropic.com/v1/compliance/apps/sessions/local/$LOCAL_SESSION_ID/messages \
290 -H 'anthropic-version: 2023-06-01' \
294291 -H "Authorization: Bearer $ANTHROPIC_COMPLIANCE_API_KEY"
295292```
296293 
from line 478
481478 A transcript marker generated by the endpoint rather than sent by
482479 either party during the session. Marker messages indicate that the
483480 prompt history diverged from what was captured, that the request's
484 `system` field was present but is not shown, or that
485 prompt-carried history was suppressed because the session spans the
486 child organization's retention boundary and those turns cannot be
487 placed against it (the marker's text names the cause). Markers that
488 report a mismatch with captured history can result from normal request
489 or client processing, not only client modification.
481 `system` field was present but is not shown, or that earlier turns
482 that a request re-sent as history were withheld because they cannot
483 be dated against the child organization's data-retention period
484 (only for organizations with a finite retention period; the request's
485 new user input after its last assistant turn is not affected). The
486 marker's text names the cause. Markers that report a mismatch with
487 captured history can result from normal request or client processing,
488 not only client modification.
490489 
491490 - `type: "synthetic_marker"`
492491