catalyst-stratus

catalyst-stratus is a skill for Claude Code, Codex from catalystbyzoho/claude-plugin. It costs 88 tokens per session (393 once invoked), scanned A, original, Apache-2.0.

A guide for using Catalyst Stratus, an object-storage service for saving and retrieving files through its own software interface.

In plain words
What is it for?
Use it to upload, download, delete, or share files with signed URLs, and to set up multipart uploads for large files.
Why use it?
It helps developers choose the right upload method and handle large files and user-facing file links correctly.

Skill for Claude CodeCodex

Part of the claude-plugin plugin — 16 skills, 1 command, 1 hook, 1 MCP server shipped together

Install

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.

agentmods
npx agentmods add skills/catalystbyzoho/claude-plugin/catalyst-stratus
Any agent
npx skills add catalystbyzoho/claude-plugin --skill catalyst-stratus
Clone the repo
git clone --depth 1 https://github.com/catalystbyzoho/claude-plugin

Made for: Claude Code, Codex.

Or install claude-plugin, the plugin that ships this one along with the rest of its 16 skills, 1 command, 1 hook, 1 MCP server.

Wrote 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.

agentmods badge for catalyst-stratus

README.md
[![agentmods](https://agentmods.dev/badge/skills/catalystbyzoho/claude-plugin/catalyst-stratus.svg)](https://agentmods.dev/skills/catalystbyzoho/claude-plugin/catalyst-stratus)
Your own site
<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>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 393 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured 6d ago against content hash b61c595ad593, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

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.

skills/catalyst-stratus/SKILL.md · 24 lines

What it actually says

How It Works

  1. Bucket naming — Bucket names are globally unique. Use {app-name}-{project-id-prefix} pattern to avoid collisions.
  2. Load references/stratus-basics.md — for upload/download/delete patterns, the 250 GB single-upload limit, signed URL generation, and multipart setup.
  3. 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.
  4. 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
Files

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.

Changes

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.

  1. 6d ago First seen · 24 lines · 88 tokens per session scan A b61c595ad593

Subscribe to this mod's changes

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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