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 skills add human-avatar/skills-for-humanity --skill s4h-information-redundancygit clone --depth 1 https://github.com/human-avatar/skills-for-humanityWrote 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/human-avatar/skills-for-humanity/s4h-information-redundancy)<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-information-redundancy"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-information-redundancy/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/human-avatar/skills-for-humanity/s4h-information-redundancy"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-information-redundancy.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00068 | $0.01861 |
| Opus 5 | $0.00034 | $0.00931 |
| Sonnet 5 | $0.00014 | $0.00372 |
| Haiku 4.5 | $0.00007 | $0.00186 |
Grade A, and why
s4h-information-redundancy 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 9d 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Information: Redundancy
Redundancy is the presence of more information than is strictly necessary to transmit a message. In everyday usage, "redundant" is a criticism — meaning wasteful, duplicative, bloated. Shannon's information theory revealed the other side: redundancy is also the mechanism by which messages survive noisy channels. Without redundancy, a single corrupted bit destroys the message. With the right kind of redundancy, errors are detectable and correctable.
English has roughly 75% redundancy — far more than the minimum required to convey meaning. This is not a design flaw. It's what allows us to understand messages even when words are missing, sentences are incomplete, or the channel is imperfect. The same principle appears everywhere: RAID arrays duplicate data across disks so a drive failure doesn't mean data loss; aviation uses triple-redundant systems so a single component failure doesn't mean a crash; well-structured arguments repeat their core claim in multiple forms because readers approach text non-linearly and a single statement may be missed.
The analytical task is to distinguish these two faces of redundancy. Load-bearing redundancy serves a function: fault tolerance, error correction, pattern reinforcement, or verification. Wasteful redundancy serves no function: it is repetition without purpose, bulk without benefit, duplication that increases cost without increasing robustness. The line between them is determined by the system's failure modes and the value of what it's protecting.
Shannon's coding theorems established that redundancy can be added optimally — there is a minimum amount of redundancy needed to achieve a given level of error correction. This is the basis of modern error-correcting codes. The applied insight: before eliminating redundancy, understand whether the redundancy is doing error-correction work you'd otherwise lose.
Your Process
Step 1: Identify All Instances of Redundancy Enumerate every place where information, functionality, or effort is duplicated. Be exhaustive first; classify second. Types to look for:
- Informational redundancy: the same claim, data point, or message appears in multiple places
- Structural redundancy: the same function is performed by multiple components
- Organisational redundancy: multiple teams, roles, or processes do the same work
- Communication redundancy: the same message is delivered through multiple channels or phrasings
- Temporal redundancy: something is repeated over time — regular check-ins, repeated reminders, copies of backups
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.
- 9d ago First seen · 124 lines · 68 tokens per session scan A c5c5765d9ce8
s4h-information-redundancy is a skill published in the GitHub repository human-avatar/skills-for-humanity (223 stars, last pushed 1mo ago), licensed MIT. It adds 68 tokens to every session and 1,861 once invoked, about $0.0003 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 2026-09-03.
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