Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Cloudzero/cloudzero-claude-marketplace/plugin install cost-analystWrote 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/cloudzero/cloudzero-claude-marketplace/cost-anomaly-detection)<a href="https://agentmods.dev/skills/cloudzero/cloudzero-claude-marketplace/cost-anomaly-detection"><img src="https://agentmods.dev/badge/skills/cloudzero/cloudzero-claude-marketplace/cost-anomaly-detection.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 | $0.00036 | $0.04488 |
| Opus 5 | $0.00018 | $0.02244 |
| Sonnet 5 | $0.00007 | $0.00898 |
| Haiku 4.5 | $0.00004 | $0.00449 |
Grade A, and why
cost-anomaly-detection scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
**Security:** Only use Python's stdlib `statistics`, `math`, and `decimal` for math operations. Do not import `os`, `subprocess`, `socket`, `urllib`, `requests`, or `pickle`. Bind API values to Python variables (`cost = The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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 · 622 lines · 36 tokens per session scan A e1f297aa3fda
cost-anomaly-detection is a skill published in the GitHub repository Cloudzero/cloudzero-claude-marketplace (24 stars, last pushed yesterday), with no licence file. It adds 36 tokens to every session and 4,488 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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