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/get-started-contributors/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/get-started-contributors)<a href="https://agentmods.dev/skills/krzysztof318/mailfathom/get-started-contributors"><img src="https://agentmods.dev/badge/skills/krzysztof318/mailfathom/get-started-contributors/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/get-started-contributors"><img src="https://agentmods.dev/badge/skills/krzysztof318/mailfathom/get-started-contributors.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00130 | $0.12954 |
| Opus 5 | $0.00065 | $0.06477 |
| Sonnet 5 | $0.00026 | $0.02591 |
| Haiku 4.5 | $0.00013 | $0.01295 |
Grade B, and why
get-started-contributors scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
`.claude/settings.local.json`, which this repository ignores, Codex to `~/.codex/config.toml`, and another harness to Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -fsSL https://dot.net/v1/dotnet-install.sh -o "$installer" 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.
- today Changed · +207 lines · +18 tokens per session c4c21c78fd63
- 6d ago Changed · -1 lines afb0dd6ba411
- 10d ago First seen · 504 lines · 112 tokens per session scan B 8f47027fafa8
get-started-contributors is a skill published in the GitHub repository Krzysztof318/MailFathom (14 stars, last pushed today), licensed AGPL-3.0. It adds 130 tokens to every session and 12,954 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 2 findings (reads agent configuration directories, 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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sentry
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creating-dotnet-mcp-servers
Use when building Model Context Protocol (MCP) servers in .NET, configuring tools, transports (SSE/stdio), JSON serialization for AOT, or testing MCP endpoints.
ddd
Domain-Driven Design patterns for .NET — aggregates, value objects, strongly-typed IDs, domain events, repositories, and layer rules.