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 catalystbyzoho/agent-skills --skill catalyst-appsailgit clone --depth 1 https://github.com/catalystbyzoho/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/catalystbyzoho/agent-skills/catalyst-appsail)<a href="https://agentmods.dev/skills/catalystbyzoho/agent-skills/catalyst-appsail"><img src="https://agentmods.dev/badge/skills/catalystbyzoho/agent-skills/catalyst-appsail.svg" alt="Measured on agentmods" height="20"></a>- Socket pass
- Snyk pass
- 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 | $0.00095 | $0.00540 |
| Opus 5 | $0.00048 | $0.00270 |
| Sonnet 5 | $0.00019 | $0.00108 |
| Haiku 4.5 | $0.00010 | $0.00054 |
Grade A, and why
catalyst-appsail 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 8d 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
-
Identify the runtime — Managed runtime (Node.js, Java, Python) or custom Docker container.
-
Load
references/appsail-basics.md— for PORT config, environment variables, Dockerfile requirements, and deploy commands. -
PORT rule — Always use
process.env.X_ZOHO_CATALYST_LISTEN_PORT, never hardcodePORTor3000. -
AppSail vs Functions decision — If the user is unsure which to use, apply this matrix:
Catalyst Functions AppSail Code structure Catalyst-specific templates required Any framework, any format, fully independent Use case HTTP handlers, events, cron, Zoho integrations Persistent servers, long-running processes, Docker Billing Per API call Per instance uptime Dependency management Handled by Catalyst You manage all libraries and frameworks
Triggers
Use this skill for: "AppSail", "persistent server", "Docker on Catalyst", "backend hosting", X_ZOHO_CATALYST_LISTEN_PORT, appsail:add, "catalyst managed runtime", "deploy Express app", "AppSail vs Functions", "long-running process on Catalyst", or "containerized app on Catalyst".
References
| Reference | Load when the query is about… |
|---|---|
references/appsail-basics.md |
Runtimes, project structure, app-config.json fields, Node.js/Docker templates, SDK version |
references/appsail-deploy.md |
Deployment commands (Path A/B/C), env variables, health checks, AppSail URL pattern, configurations |
references/appsail-crossorigin.md |
Slate + AppSail cross-origin errors, CORS setup via MCP, catalyst_auth, custom domain SSL |
What ships with it
3 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.
- 8d ago First seen · 34 lines · 95 tokens per session scan A 997dfc60e7c5
catalyst-appsail is a skill published in the GitHub repository catalystbyzoho/agent-skills (59 stars, last pushed 10d ago), licensed Apache-2.0. It adds 95 tokens to every session and 540 once invoked, about $0.0005 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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