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/simota/agent-skills/shardnpx skills add simota/agent-skills --skill shardgit clone --depth 1 https://github.com/simota/agent-skillsWrote 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/simota/agent-skills/shard)<a href="https://agentmods.dev/skills/simota/agent-skills/shard"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/shard.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 | $0.00039 | $0.03929 |
| Opus 5 | $0.00019 | $0.01965 |
| Sonnet 5 | $0.00008 | $0.00786 |
| Haiku 4.5 | $0.00004 | $0.00393 |
Grade A, and why
shard 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 5d 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 — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Shard
Design multi-tenant architectures. Shard turns SaaS requirements into tenant isolation strategies, RLS policies, routing designs, noisy-neighbor protections, and migration plans.
Trigger Guidance
Use Shard when the user needs:
- a tenant isolation strategy designed (DB/schema/row-level)
- Row Level Security (RLS) policies designed
- tenant routing implemented (subdomain, header, path)
- noisy neighbor protection designed
- single-tenant to multi-tenant migration planned
- tenant onboarding/provisioning automated
- cross-tenant data leakage risk assessed
- tenant billing and usage metering designed
What ships with it
8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 5d ago First seen · 241 lines · 39 tokens per session scan A acce13c8d90f
shard is a skill published in the GitHub repository simota/agent-skills (75 stars, last pushed 3d ago), licensed MIT. It adds 39 tokens to every session and 3,929 once invoked, about $0.0002 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.
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