evolve-lite:retention SKILL.md skillA
evolve-lite:retention from agenttoolkit/altk-evolve is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agenttoolkit/altk-evolve/evolve-lite:retention@git:20260723.976721aPins git:20260723.976721a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agenttoolkit/altk-evolve
- Path
platform-integrations/bob/evolve-lite/skills/evolve-lite-retention/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260723.976721a, committed Jul 23, 2026
- Size
- 4,149 bytes
- Repository stars
- 136
- License
- Apache-2.0
Apply data-retention rules to the local evolve store — flag or delete stale and unused memories and expired sessions (dry-run by default).
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
# Retention
## Overview
Runs the data-retention rules configured in `evolve.config.yaml` against the
local `.evolve/` store: private entities under `.evolve/entities/` and session
transcripts under `.evolve/trajectories/`. Rules match by entity type plus age
(`max_age_days`, from file mtime) or disuse (`max_unused_days`, from `recall`
rows in `.evolve/audit.log`), and either **flag** (a non-destructive frontmatter
marker) or **delete**. A `delete` rule on trajectories with
`cascade_derived: true` also deletes the entities derived from those sessions
(linked by their `trajectory:` frontmatter).
The script is **dry-run by default** — it never mutates anything unless
`--apply` is passed.
## Workflow
### Step 1: Require rules
Read `evolve.config.yaml`. If there is no `retention:` block with a `rules:`
list, show the user this example and stop:
```yaml
retention:
rules:
- name: stale-guidelines
entity_type: guideline
max_age_days: 90
action: flag
- name: old-sessions
entity_type: trajectory
max_age_days: 365
action: delete
cascade_derived: true
```
Each rule needs a `name` and at least one of `max_age_days` /
…Read the whole file at its exact version.
How to install
mdr add agenttoolkit/altk-evolve/evolve-lite:retention@sha256:4456d3b67054847fThe line at the top of this page pins the label git:20260723.976721a, 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_hpbxzy3cxvxwhyxy)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 23, 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 (4149 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
agenttoolkit/altk-evolve · 136 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hpbxzy3cxvxwhyxy GET https://markdownregistry.com/api/v1/resolve?ref=agenttoolkit/altk-evolve/evolve-lite:retention GET https://markdownregistry.com/api/v1/blob/4456d3b67054847f12f851a2d4461cf3710d36a37b2af1eff0313e7fe71fd075
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.