feat: spill oversized tool results to tape - #278
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| @hookspec | ||
| def provide_tape_sidecars(self) -> list[TapeSidecar]: | ||
| """Provide capabilities backed by sibling tapes mounted on every session tape.""" | ||
| raise NotImplementedError |
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This can be implemented multiple times, no need to return a list
| continue | ||
| result.append(filename) | ||
| return result | ||
| return sorted(file.stem for file in self._directory.glob("*.jsonl")) |
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This will count in archives as well, maybe give sidecars some special marks in the filename
| """Runtime context passed to tools that opt into context.""" | ||
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| tape: Tape | ||
| tape: Any |
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Summary
Store oversized string tool results in a sibling spill tape and keep only a bounded preview in the session tape. Models retrieve stored content in bounded pages with
spill.read, so large payloads remain available without expanding later model contexts.Tape sidecars are mounted through the new
provide_tape_sidecarshook. The builtinSpillStoreis the first provider and reuses the activeTapeStore, so SQLite and other storage plugins need no changes. The main tape handles fork, merge, archive, and reset for every mounted sidecar; sidecar failures do not block it.Spill configuration belongs to its plugin through
spill.thresholdorBUB_SPILL_THRESHOLD. Setting the threshold to0stops new spills while leaving existing handles readable.Checks
uv run ruff check .uv run ruff format --check .uv run mypy srcmake test(293 passed)