# Upstream helpers for monte-carlo-performance-diagnosis

The files listed below were recovered from [monte-carlo-data/mc-agent-toolkit](https://github.com/monte-carlo-data/mc-agent-toolkit) at commit `f1ea90fa2b7fa1ece98e52a45d887c609f2a8de6`. The repository ID is `1166903665`.

They retain the upstream **Apache-2.0** license reproduced in [UPSTREAM-LICENSE.txt](UPSTREAM-LICENSE.txt). This notice applies to the listed support files; it does not replace the license metadata of other catalog files. Preserve the upstream license and this attribution when redistributing them.

License wording is unchanged; text-only trailing whitespace and EOF blank lines are normalized. Original license: https://github.com/monte-carlo-data/mc-agent-toolkit/blob/f1ea90fa2b7fa1ece98e52a45d887c609f2a8de6/LICENSE

| Local file | Original upstream path | Original Git blob SHA | Import changes |
| --- | --- | --- | --- |
| `references/investigation-tiers.md` | `skills/performance-diagnosis/references/investigation-tiers.md` | `9f6f97218fab64eef59c02f4c7ee8469f6205dd6` | text-only trailing whitespace and EOF blank lines normalized |
| `references/query-analysis.md` | `skills/performance-diagnosis/references/query-analysis.md` | `6fd04bbb2f27ff291993362e25f7456f3bf9eed8` | text-only trailing whitespace and EOF blank lines normalized |

AAS review 2026-10-23: qualified causal/percentile and billed-cost interpretations in both reference files; original attribution retained.