Borrowing it
Nothing to install: this file belongs to Krzysztof318/MailFathom. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Krzysztof318/MailFathom/main/.agents/skills/prepare-release/SKILL.mdgit clone --depth 1 https://github.com/Krzysztof318/MailFathomWrote 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/krzysztof318/mailfathom/prepare-release)<a href="https://agentmods.dev/skills/krzysztof318/mailfathom/prepare-release"><img src="https://agentmods.dev/badge/skills/krzysztof318/mailfathom/prepare-release/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/krzysztof318/mailfathom/prepare-release"><img src="https://agentmods.dev/badge/skills/krzysztof318/mailfathom/prepare-release.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- 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 | $0.00058 | $0.10615 |
| Opus 5 | $0.00029 | $0.05307 |
| Sonnet 5 | $0.00012 | $0.02123 |
| Haiku 4.5 | $0.00006 | $0.01061 |
Grade A, and why
prepare-release 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 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl --fail --silent --show-error \ The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
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 Changed · +1 lines 1768a07bf583
- 11d ago First seen · 622 lines · 58 tokens per session scan A 06102e51903c
prepare-release is a skill published in the GitHub repository Krzysztof318/MailFathom (14 stars, last pushed yesterday), licensed AGPL-3.0. It adds 58 tokens to every session and 10,615 once invoked, about $0.0003 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.
Other skills, from other repositories
sentry
Use when adding error tracking, performance monitoring, and release health to .NET applications — ASP.NET Core, MAUI, WPF, Blazor, EF Core integration. Sentry .NET SDK: cross-platform error and performance monitoring with source map support, breadcrumbs, and alerting.
backend-conventions
Backend convention reference (.NET 10 / C# 13). Auto-injected into backend-aware agents - not user-invocable.
address-review
Read PR review comments from GitHub, evaluate, address, and reply.
create-release
Create a versioned GitHub release with changelog.
add-options-class
Add a typed options/configuration class with validation.
create-issue
Create a GitHub issue with labels and optional sub-issues.