memento:decay SKILL.md skillA
memento:decay from aiyo28/memento-os is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add aiyo28/memento-os/memento:decay@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- aiyo28/memento-os
- Path
skills/memento-decay/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed May 20, 2026
- Size
- 5,207 bytes
- Repository stars
- 4
- License
- MIT
Find aged [D] artifacts whose invalidation triggers may have fired. Scans vault _context.md tables, parses the invalidates-if clause, scores decay from git log keyword search + vault contradiction + age. Emits ranked candidates with the triggering signal. User confirms → artifact marked superseded. Triggers: "decay check", "what's stale", "memento decay", "find stale decisions", "audit aged artifacts".
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# /memento:decay
Walk every `[D]` artifact past its freshness window, look for evidence the invalidation trigger has fired, and prompt the user to mark stale ones `superseded`.
## What signals drive scoring
| Signal | Weight | Source |
|--------|--------|--------|
| (a) git log keyword match | +2 per match, cap +6 | `git log --grep` on noun-phrase tokens from the invalidator |
| (b) newer artifact with overlapping terms | +3 per match | scan all `_context.md` for later `[D]`/`[I]` whose conclusion overlaps |
| (c) age past 90 days with no other signal | +1 | weak; surfaces only when (a)/(b) are silent |
Tiers:
- **LIKELY STALE** — score ≥ 3 — strong evidence; prompt user to supersede
- **REVIEW** — score 1–2 — possible drift; ask user to confirm or extend
- **AGE-ONLY** — score 0 with `--all` — surface only when explicitly requested
## How to invoke
```bash
python3 ${MEMENTO_PLUGIN_ROOT:-skills/memento-decay}/decay.py [VAULT_ROOT] \
[--age 30] [--format text|json] [--no-git] [--all]
```
- `--age N` — minimum age in days (default 30)
- `--no-git` — skip git signal (use when offline or when vault is outside any repo)
- `--all` — include candidates with score 0 (pure age)
…Read the whole file at its exact version.
How to install
mdr add aiyo28/memento-os/memento:decay@sha256:2866032edada8b2fThe line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_mcqsy5owilb7g62r)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on May 20, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5207 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
aiyo28/memento-os · 4 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_mcqsy5owilb7g62r GET https://markdownregistry.com/api/v1/resolve?ref=aiyo28/memento-os/memento:decay GET https://markdownregistry.com/api/v1/blob/2866032edada8b2f8c7d73f340c82679b9a491d043ebbba8e0b5d48a3fcde911
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.