mom-rebuild

Original：🇺🇸 English

Translated

Rebuild this project's MOM vault from scratch over the full captured history. Use after switching synthesis engines, recovering from a corrupted vault, or when the user explicitly asks to rebuild or regenerate memory from the beginning.

18installs

Sourcemomhq/mom

Added on2026-07-12

NPX Install

npx skill4agent add momhq/mom mom-rebuild

SKILL.md Content

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Rebuild discards the synthesized vault and re-creates it from offset 0 over the entire captured history. It is heavier than a fold — use it deliberately. For routine end-of-session saves, use

/mom-fold

instead.

Preflight

Check that

mom

is on PATH:

bash

command -v mom

If it is missing, tell the user MOM is not installed and ask permission to install it:

text

MOM is not installed. Install it now with Homebrew?
  brew install momhq/tap/mom
Source: https://github.com/momhq/mom

If the user agrees, run that command. If the user declines, stop. Do not install MOM without explicit permission.

Confirm a project is bound:

bash

test -f .mom-project.yaml

If it is missing, the directory is unbound — there is nothing to rebuild. Tell the user to bind first with

/mom-project

, then stop.

Run

Confirm with the user before rebuilding — it regenerates the whole vault from scratch (human-authored content in CLAUDE.md is preserved; synthesized vault files are replaced) and runs the LLM engine over all history, so it can be slow.

On confirmation:

bash

mom vault rebuild

Append

--engine <auto|claude|codex|pi>

only if the user named a specific engine. When it finishes, run

mom vault status

and report the watermark, file count, and engine used.

Rules

Always confirm before rebuilding — it is a full regeneration over all captured history.
For routine saves use
```
/mom-fold
```
; reserve rebuild for engine changes or recovery from a corrupted vault.
CLI flag surface — never invent flags. Before using any flag, run
```
mom vault rebuild --help
```
and confirm it appears.

Postflight (version hint)

Any

mom ...

command may print a banner to stderr like:

MOM 0.40.1 available. Run `brew upgrade mom` or `mom self-update`

If you see that line, finish the task first, then add one short line at the end of your reply suggesting the upgrade. Do not run the upgrade yourself.

mom-rebuild

NPX Install

Tags

SKILL.md Content

Preflight

Run

Rules

Postflight (version hint)