ca-prune SKILL.md skillA
ca-prune from arbiterforge/codearbiter is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add arbiterforge/codearbiter/ca-prune@git:20260805.e24f9ecPins git:20260805.e24f9ec in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- arbiterforge/codearbiter
- Path
plugins/ca-pi/skills/ca-prune/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260805.e24f9ec, committed Aug 5, 2026
- First version recorded
- Jul 24, 2026
- Size
- 6,499 bytes
- Repository stars
- 152
- License
- AGPL-3.0
Trim transcript clutter to extend session lifetime — analyze, prune a copy, or toggle the after-each-turn service. Dry-run by default; gains land at resume/compaction, not the current turn.
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
# /ca-prune — session transcript pruner Long sessions die when their semantic history fills the context window with bulk: oversized tool outputs, thinking blocks, MCP/shell noise, stale file reads, and host-specific sidecars. The shared policy trims that bulk at safe quiescence boundaries while each host codec preserves its native integrity model and the K most recent tool-bearing turns verbatim. Claude keeps byte-safe JSONL serialization; Pi uses semantic entries and returns a native custom-compaction result. Gains land at the host's next native resume/restart or compaction boundary, not by mutating the running session's active file. **Pi-native compaction** is event-driven and never rewrites an active Pi session file. ## Argument `$ARGUMENTS` is one of: - `status` (default) — report cumulative reduction and service state for this session from `~/.codearbiter/prune-state.json`, and whether `CODEARBITER_PRUNE` is `on`/`dry`/`off`. When the service has run in `dry` mode, every would-be prune is also recorded — one JSONL row per decision, across all sessions — to the shared data-collection log …
Read the whole file at its exact version.
How to install
mdr add arbiterforge/codearbiter/ca-prune@sha256:8949caa6008bb305The line at the top of this page pins the label git:20260805.e24f9ec, 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_k5jrile5inhj4zwb)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jul 24, 2026 and Aug 5, 2026, about one every 12 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260805.e24f9ec latest | 2026-08-05 | e24f9ec | 6,499 B | A | view · diff |
| git:20260724.a3a2df2 | 2026-07-24 | a3a2df2 | 6,424 B | A | view |
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 (6499 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
arbiterforge/codearbiter · 152 stars · license AGPL-3.0 · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_k5jrile5inhj4zwb GET https://markdownregistry.com/api/v1/resolve?ref=arbiterforge/codearbiter/ca-prune GET https://markdownregistry.com/api/v1/blob/8949caa6008bb305ac8f26a434c5d6585f5d7c1ee111a7709737661772b5a08d
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.