Delivering work changedbuild-with-claude/prompt-engineering/prompting-claude-fable-5-1
Nearest release: v2.1.309, published under an hour 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+5added
Lines−6removed
From line
385
where the diff opens
First seen
1 Sep 2026
this site's first read of the page
Recorded edits12to this page, all time
The whole hunk
from line 385, old and new numbered
/
from line 385
385385 "fmt"
386386 "log"
387387
388 "github.com/anthropics/anthropic-sdk-go"
388 "github.com/anthropics/anthropic-sdk-go/v2"
389389 )
390390
391391 const batchNudge = "First privately list what you need next; then request every item " +
from line 465
465465 // turn-scoped system message. Leave earlier copies in place: the API clears them,
466466 // so the model sees only the newest one.
467467 messages = append(messages, anthropic.NewBetaUserMessage(toolResults...))
468 messages = append(messages, anthropic.BetaMessageParam{
469 Role: anthropic.BetaMessageParamRoleSystem,
470 Content: []anthropic.BetaContentBlockParamUnion{anthropic.NewBetaTextBlock(batchNudge)},
471 ClearAt: anthropic.BetaMessageParamClearAtNextUserMessage,
472 })
468 messages = append(messages, anthropic.BetaMessageParam{OfSystem: &anthropic.BetaSystemMessageParam{
469 Content: []anthropic.BetaSystemMessageParamContentUnion{{OfText: &anthropic.BetaTextBlockParam{Text: batchNudge}}},
470 ClearAt: anthropic.BetaSystemMessageParamClearAtNextUserMessage,
471 }})
473472 }
474473
475474 for _, block := range response.Content {
No line in this hunk matches that.