feat(ai): add experimental callbacks in generateText#12654
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aayush-kapoor merged 30 commits intomainfrom Feb 19, 2026
Merged
feat(ai): add experimental callbacks in generateText#12654aayush-kapoor merged 30 commits intomainfrom
aayush-kapoor merged 30 commits intomainfrom
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aayush-kapoor
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Feb 18, 2026
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For future PRs, we need something like onGenerationStart/onGenerationEnd that bounds the LLM call (not the full step) |
lgrammel
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Feb 18, 2026
lgrammel
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lgrammel
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lgrammel
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Feb 19, 2026
aayush-kapoor
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Feb 19, 2026
| | undefined, | ||
| experimental_context, | ||
| }); | ||
| } catch (_ignored) { |
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future work: figure out how to log this; don't want to swallow errors
This was referenced Feb 19, 2026
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## Background as a follow up to #12654, we will introduce the same callbacks for streamText function ## Summary - added callback `experimental_onStart` that exposes the data/events that happen at the very beginning - added callback `experimental_onStepStart` - added callback `experimental_onToolCallStart` - added callback `experimental_onToolCallFinish` ## Manual Verification ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [x] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added (for bug fixes / features - run `pnpm changeset` in the project root) - [x] I have reviewed this pull request (self-review) ## Future Work - add similar callbacks for the agent loop
aayush-kapoor
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## Background as a follow up to #12654, we will introduce the same callbacks for the `ToolLoopAgent` ## Summary - added callback `experimental_onStart` that exposes the data/events that happen at the very beginning - added callback `experimental_onStepStart` - added callback `experimental_onToolCallStart` - added callback `experimental_onToolCallFinish` ## Manual Verification ## Future Work - callbacks aren't currently passed through for streaming - will need to merge #12708 first ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [x] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added (for bug fixes / features - run `pnpm changeset` in the project root) - [x] I have reviewed this pull request (self-review)
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Background
our current telemetry setup was heavily integrated with OTel. this is the first step in decoupling the telemetry from the core functions
Summary
experimental_onStartthat exposes the data/events that happen at the very beginningexperimental_onStepStartexperimental_onToolCallStartexperimental_onToolCallFinishManual Verification
Checklist
pnpm changesetin the project root)Future Work