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/catalystbyzoho/claude-plugin/catalyst-stratusnpx skills add catalystbyzoho/claude-plugin --skill catalyst-stratusgit clone --depth 1 https://github.com/catalystbyzoho/claude-pluginWrote 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/catalystbyzoho/claude-plugin/catalyst-stratus)<a href="https://agentmods.dev/skills/catalystbyzoho/claude-plugin/catalyst-stratus"><img src="https://agentmods.dev/badge/skills/catalystbyzoho/claude-plugin/catalyst-stratus.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 | $0.00088 | $0.00393 |
| Opus 5 | $0.00044 | $0.00197 |
| Sonnet 5 | $0.00018 | $0.00079 |
| Haiku 4.5 | $0.00009 | $0.00039 |
Grade A, and why
catalyst-stratus 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.
What it actually says
How It Works
- Bucket naming — Bucket names are globally unique. Use
{app-name}-{project-id-prefix}pattern to avoid collisions. - Load
references/stratus-basics.md— for upload/download/delete patterns, the 250 GB single-upload limit, signed URL generation, and multipart setup. - Large files — Multipart upload is recommended (not required) for files ≥ 100 MB. Single-shot upload supports up to 250 GB per object. Load the multipart section of
stratus-basics.md. - Signed URLs — For user-facing direct downloads/uploads, generate a signed URL server-side and return it to the client.
Triggers
Use this skill for: "Stratus", "object storage", "file storage", "upload file", "download file", "signed URL", "pre-signed URL", "multipart upload", putObject, getObject, "bucket", "Stratus bucket", "store files on Catalyst", "Stratus vs File Store", "250GB limit", or "file download link".
References
| Reference | Load when the query is about… |
|---|---|
references/stratus-basics.md |
Upload/download/delete, 250GB single-shot limit, multipart (recommended for ≥100 MB), signed URLs, busboy upload pattern, bucket naming rules |
What ships with it
1 file 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.
- 6d ago First seen · 24 lines · 88 tokens per session scan A b61c595ad593
catalyst-stratus is a skill published in the GitHub repository catalystbyzoho/claude-plugin (0 stars, last pushed 24d ago), licensed Apache-2.0. It adds 88 tokens to every session and 393 once invoked, about $0.0004 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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