6 changes since v2.1.317, landing in 5 of 21 prompts.
Every prompt v2.1.318 sent, compared word for word with the capture before it. Each card is one edit, with every prompt it reached; the table after them shows where each one landed.
What changed 6
1
System prompt · under “Context management”
EndConversation deferred-tool guidance removed
The system prompt no longer mentions the deferred EndConversation tool. It previously said to use it only for sustained user abuse aimed at the assistant or when the user explicitly asked for a demonstration, and to load its full guidance via ToolSearch first. This appeared in only 1 of 23 captures, so it likely applies to one specific setup.
Behind a feature flag
+0−34 words
−EndConversation (deferred tool): use only for sustained user abuse directed at the assistant, or when the user explicitly asks to see it demonstrated. Load the full guidance via ToolSearch("select:EndConversation") before using it.
2
Slash command text · under “Get Started”
Guide must note sessions left out of usage stats
A new instruction for the guide-creating slash command says that if `sessionsLeftOut` is above 0, Claude should state in one plain sentence under "How We Use Claude" that some sessions could not be tied to the creator's current sign-in, so the numbers may be incomplete. Claude must repeat that note when presenting the draft. It appeared in only 1 of 21 captures, so it likely applies to the setup that runs this command.
+55−0 words
+ If `sessionsLeftOut` is above 0, that many sessions were left out because they couldn't be tied to the way the guide creator is signed in now, so the numbers may not cover everything from this period: say so in one plain sentence under "How We Use Claude" and again when you present the draft.
3
Slash command text · under “Usage data (last 30 days)”
Usage data gains a sessionProvenance field
The usage data block for the last 30 days now includes a `sessionProvenance` field whose value is a placeholder marking artifact content authored by others. It appeared in only 1 of 21 captures, tied to the slash command that receives this usage data.
Slash command text · under “Usage data (last 30 days)”
Usage data gains a sessionsLeftOut count
The usage data block for the last 30 days now includes a `sessionsLeftOut` count, set to 0 in this capture. This is the field the new instruction checks before telling Claude to warn that the numbers may be incomplete. It appeared in only 1 of 21 captures.
+2−0 words
+ "sessionsLeftOut": 0,
5
PushNotification tool parameters · line 16
PushNotification no longer requires a status parameter
The list of required PushNotification parameters drops "status" and keeps only "message", so Claude can send a notification without supplying a status. The diff does not show whether status remains available as an optional field. This landed in 3 of 6 captures, so it may apply only to some setups.
Behind a feature flag
+0−1 words
~ "message",
− "status"
6
Appended context (skills, environment) · at “EndConversation”
EndConversation dropped from appended tool listing
The name EndConversation was removed from the appended context, so it is no longer listed there as an available deferred tool. This was seen in only 1 of 23 captures and matches the removal of the EndConversation guidance from the system prompt.
Behind a feature flag
+0−1 words
−EndConversation
Where each change landed
Every prompt the release sent, one row each. A number is a change from the list above; click it to jump there. Rows with more than one model string count them, because each model gets its own copy of the prompt.
16 prompts did not move at all: Claude Code, default, Agent SDK, default, Auto-mode classifier, Slash commands: /init, Slash commands: /security-review, Compaction: Compaction instruction, System reminders: Claude md, System reminders: Hook pretool block, System reminders: Read empty, System reminders: Read offset, System reminders: Skill run, System reminders: Todo nag, System reminders: Toolsearch deferred, Subagents: explore, Subagents: general-purpose, Subagents: plan.
Set aside as capture noise
These change on every capture by construction, so they are masked before comparing and never counted as a change.
