Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/justmichael-80/mastervault/delta-skillnpx skills add JustMichael-80/MasterVault --skill delta-skillgit clone --depth 1 https://github.com/JustMichael-80/MasterVaultWrote 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/justmichael-80/mastervault/delta-skill)<a href="https://agentmods.dev/skills/justmichael-80/mastervault/delta-skill"><img src="https://agentmods.dev/badge/skills/justmichael-80/mastervault/delta-skill.svg" alt="Measured on agentmods" 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 | $0.00010 | $0.00029 |
| Opus 5 | $0.00005 | $0.00015 |
| Sonnet 5 | $0.00002 | $0.00006 |
| Haiku 4.5 | $0.00001 | $0.00003 |
Grade A, and why
delta-skill 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 6d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- gamma-skill — 92% identical, 2 lines differ
What it actually says
Fixture skill for installer discovery tests. Not a real skill.
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.
- 6d ago First seen · 6 lines · 10 tokens per session scan A b922c31d964c
delta-skill is a skill published in the GitHub repository JustMichael-80/MasterVault (12 stars, last pushed 24d ago), licensed MIT. It adds 10 tokens to every session and 29 once invoked, about $0.0001 per session on Opus 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 2026-08-30.
Other skills, from other repositories
memorb-conventions
Base layer conventions for the memOrb vault: path resolution, folder structure, naming rules, YAML frontmatter schema, orb layouts. Prerequisite for every write skill. Triggers: path, folder structure, naming, frontmatter, schema, 路徑, 資料夾結構, 命名, 模板, frontmatter, schema.
dream-studio
The dream studio: once a month, use the Memory Commit Journal in memorbs/log.md to select source orbs, find recurring themes, propose new Core orbs and new or revised Belief orbs, refresh the current-state narrative on each Island, and finally rotate the journal. Sole executor of Evaluate, the last step of the…
island-reclamation
The full procedure for adding an Island (a domain of long-term responsibility or interest): first agree with the user on what the Island is and at what level to name it, then pick a folder structure, then get the first batch of files confirmed — and only then create anything, finishing with a memory-layer sync.…
memorb-lint
Wiki Lint workflow: a health check over the memory vault that surfaces contradictions, stale pages, orphans, missing pages, broken wikilinks, and bare internal paths. Offer to run it before dream-studio or after manual moves/renames. Triggers: tidy up memory, check the second brain, health check, fix links, moved…
writing-memorb-skills
Meta skill for adding or changing any sub-skill in this vault. Governs naming, frontmatter, structure, the registration checklist, and testing. Triggers: add a skill, write a skill, modify a skill, turn this into a skill, we keep doing this by hand, 新增 skill, 寫一個 skill, 修改 skill, 固化流程, 這個流程以後常做.
memorb-domain-query
Use when querying companies, employees, or contacts by email address, domain name, or company name, or when integrating Outlook/M365 email collection and company email status checks.