semantic-compressor SKILL.md skillA
semantic-compressor from claude-world/skills-optimizer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add claude-world/skills-optimizer/semantic-compressor@v2.1.0Pins v2.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- claude-world/skills-optimizer
- Path
.claude/skills/semantic-compressor/SKILL.md- Versions recorded
- 4
- Latest version
- v2.1.0, committed Oct 21, 2026
- First version recorded
- Jan 20, 2026
- Size
- 13,111 bytes
- Repository stars
- 11
- License
- MIT
Safely reduce Claude Code skill, command, and agent Markdown while preserving behavior, frontmatter, commands, tools, triggers, security rules, errors, paths, and numerical constraints. Use only when the user explicitly invokes /semantic-compressor to scan, draft, verify, apply, benchmark, or restore a compression run.
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
# Semantic Compressor
Compress instruction files without silently changing what they can do. Treat semantic retention as the primary requirement and size reduction as a secondary optimization.
Invocation arguments: `$ARGUMENTS`
Skill directory: `${CLAUDE_SKILL_DIR}`
Project directory: `${CLAUDE_PROJECT_DIR}`
## Command contract
Interpret the arguments exactly once before taking action:
| Invocation | Behavior | Writes source files? |
|---|---|---:|
| `/semantic-compressor` or `scan` | Discover eligible files and report the exact list | No |
| `compress <path>` | Create and validate a candidate in the run workspace | No |
| `<path>` | Backward-compatible alias for `compress <path>` | No |
| `apply <path>` | Create, validate, independently review, back up, then atomically replace one file | Yes |
| `verify <original> <candidate> --inventory <inventory.json>` | Run deterministic and semantic comparison | No |
| `benchmark` | Measure bundled sample pairs from the installed skill directory | No |
| `restore <manifest>` | Verify a rollback and show exact operations | No |
| `restore <manifest> --apply` | Restore only if current and backup hashes match the manifest | Yes |
…Read the whole file at its exact version.
How to install
mdr add claude-world/skills-optimizer/semantic-compressor@sha256:3feebca4248ef68cThe line at the top of this page pins the label v2.1.0, 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_26lmpkuudb7wmjby)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jan 20, 2026 and Oct 21, 2026, about one every 91 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.1.0 latest | 2026-10-21 | b6df9cf | 13,111 B | A | view · diff |
| v2.0.0 | 2026-07-18 | f8082b5 | 11,685 B | A | view · diff |
| git:20260120.a71898c | 2026-01-20 | a71898c | 6,722 B | A | view · diff |
| git:20260120.94cdfe4 | 2026-01-20 | 94cdfe4 | 6,774 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 (13111 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
claude-world/skills-optimizer · 11 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_26lmpkuudb7wmjby GET https://markdownregistry.com/api/v1/resolve?ref=claude-world/skills-optimizer/semantic-compressor GET https://markdownregistry.com/api/v1/blob/3feebca4248ef68cbb40e48ef468cd59b92d706f434a32ae8e192c159351a85a
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.