Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/nel-neru/LibrAIumnpx agentmods add skills/nel-neru/libraium/source-command-format-syncWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/nel-neru/libraium/source-command-format-sync)<a href="https://agentmods.dev/skills/nel-neru/libraium/source-command-format-sync"><img src="https://agentmods.dev/badge/skills/nel-neru/libraium/source-command-format-sync/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/nel-neru/libraium/source-command-format-sync"><img src="https://agentmods.dev/badge/skills/nel-neru/libraium/source-command-format-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00025 | $0.00828 |
| Opus 5.5 | $0.00010 | $0.00331 |
| Sonnet 5.5 | $0.00005 | $0.00166 |
| Haiku 4.5 | $0.00003 | $0.00083 |
Grade A, and why
source-command-format-sync scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 50 lines — stays where its author put it; the contents beside it link to each section on GitHub.
source-command-format-sync
Use this skill when the user asks to run the migrated source command format-sync.
Command Template
The LibrAIum data format is deliberately dual-implemented: the Rust core (desktop app) and the Node MCP server each parse, validate, and serialize the same files. After ANY change to the entry format, slugify, URL normalization, duplicate detection, or category master shape, run this synchronization procedure.
1. Identify what changed and mirror it
Walk this mapping and make the counterpart change on the other side:
| Concern | Rust | Node |
|---|---|---|
Frontmatter schema, field defaults (status: active, source: manual, stars: 0, optional-field omission) |
src-tauri/src/models.rs (EntryMeta) |
mcp-server/lib/store.js (parseEntry consumers, summarize defaults) |
Frontmatter split/parse/serialize (BOM handling, --- fences, body trimming, trailing newline) |
src-tauri/src/frontmatter.rs |
mcp-server/lib/store.js (splitFrontmatter, parseEntry, serializeEntry) |
slugify (allowed charset [a-z0-9-_.], / → -, lowercase, trim -) |
src-tauri/src/store.rs (slugify) |
mcp-server/lib/store.js (slugify) |
GitHub URL normalization (http/https/bare/git@ forms, .git, trailing /, /tree/...) |
src-tauri/src/store.rs (normalize_github_url) |
mcp-server/lib/store.js (normalizeGithubUrl) |
Duplicate detection (case-insensitive full_name) and entry id (<category>/<slug>) |
src-tauri/src/store.rs (find_duplicate, list_entries) |
mcp-server/lib/store.js (findDuplicate, listEntries, saveNewEntry) |
Both sides must accept, reject, and produce identical results. Where the change touches parsing, check the reject cases too (missing opening ---, unterminated frontmatter) — error behavior must match even if error text differs.
2. Add a fixture for the new shape
Add a fixture covering the new format shape to tests/fixtures/format/. Follow the naming pattern already used there (valid inputs that must round-trip, and invalid inputs both sides must reject). The conformance runner picks fixtures up automatically. Also extend the unit tests nearest the change (frontmatter::tests / store::tests in Rust) if the fixture alone can't express it.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 50 lines · 25 tokens per session scan A 8ee0588b3023
source-command-format-sync is a skill published in the GitHub repository nel-neru/LibrAIum (0 stars, last pushed 15d ago), licensed MIT. It adds 25 tokens to every session and 828 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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