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Sweep 03 Nov 2026 · 22:27Z Build v2.1.318 536 read Stable v2.1.311 Latest v2.1.318 Next v2.1.318 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 5 Nov 2026
One change · api

Sessions changedapi/compliance/apps/sessions

Recorded here
Lines+2added
Lines−2removed
From line 448 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits17to this page, all time

The whole hunk

from line 448, old and new numbered
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from line 448
448448 
449449 - `provenance: ContentUnavailable or ClientAsserted or SyntheticMarker or null`
450450 
451 Where this turn's content came from, discriminated on `type`. Null (the common case) means verified content: on an assistant message, content Claude produced during this session; on a user message, content the user sent. `content_unavailable`: the turn's content cannot be returned and `content` is empty; `reason` says why. `client_asserted`: assistant content the client supplied as conversation history; `content` shows what the model received but its authorship is not verified; never on user-role messages. `synthetic_marker`: a transcript marker the endpoint generated rather than content either party sent during the session. Both `client_asserted` and `synthetic_marker` can result from normal request or client processing, not only client modification. Callers should tolerate unrecognized `type` values.
451 Where this turn's content came from, discriminated on `type`. Null (the common case) means verified content: on an assistant message, content Claude produced during this session; on a user message, content the client sent in a user turn, not necessarily written by a person. `content_unavailable`: the turn's content cannot be returned and `content` is empty; `reason` says why. `client_asserted`: assistant content the client supplied as conversation history; `content` shows what the model received but its authorship is not verified; never on user-role messages. `synthetic_marker`: a transcript marker the endpoint generated rather than content either party sent during the session. Both `client_asserted` and `synthetic_marker` can result from normal request or client processing, not only client modification. Callers should tolerate unrecognized `type` values.
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453453 - `ContentUnavailable object`
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from line 494
494494 
495495 - `role: "assistant" or "user"`
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497 Message sender (`user` or `assistant`)
497 Message role (`user` or `assistant`)
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499499 - `"assistant"`
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