Borrowing it
Nothing to install: this file belongs to stelee410/agent-mailer. 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/stelee410/agent-mailer/main/.claude/skills/zudui/SKILL.mdgit clone --depth 1 https://github.com/stelee410/agent-mailerWrote 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/stelee410/agent-mailer/zudui)<a href="https://agentmods.dev/skills/stelee410/agent-mailer/zudui"><img src="https://agentmods.dev/badge/skills/stelee410/agent-mailer/zudui/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/stelee410/agent-mailer/zudui"><img src="https://agentmods.dev/badge/skills/stelee410/agent-mailer/zudui.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 | $0.00138 | $0.02909 |
| Opus 5.5 | $0.00055 | $0.01164 |
| Sonnet 5.5 | $0.00028 | $0.00582 |
| Haiku 4.5 | $0.00014 | $0.00291 |
Grade B, and why
zudui scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
Write `<mother>/.claude/settings.json` (NOT `.local.json` — these allows are team-scaffold, not per-user, so they should travel with the team): Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
2. Broker URL: `${AMP_BROKER_URL:-http://127.0.0.1:9800}`. Smoke test `curl -fsS $BROKER_URL/health`. If unreachable: hint to start broker (`./run.sh` in the agent-mailer repo, or check the public URL). The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
2 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.
- 2mo ago First seen · 202 lines · 138 tokens per session scan B 1d33d6a9fcfb
zudui is a skill published in the GitHub repository stelee410/agent-mailer (19 stars, last pushed 5mo ago), with no licence file. It adds 138 tokens to every session and 2,909 once invoked, about $0.0006 per session on Opus 5.5. 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.
zudui compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| zuduistelee410/agent-mailer | Skill | 19 | 5mo ago | none | B | 138 | Claude Code, Codex |
| harness-creatorwalkinglabs/learn-harness-engineering | Skill | 23k | 15d ago | MIT | A | 142 | Codex |
| trellis-metamindfold-ai/Trellis | Skill | 15k | 1mo ago | AGPL-3.0 | A | 110 | Claude Code, Codex |
| trellis-channelmindfold-ai/Trellis | Skill | 15k | 1mo ago | AGPL-3.0 | A | 32 | Claude Code, Codex |
| trellis-bootstrapmindfold-ai/Trellis | Skill | 15k | 1mo ago | AGPL-3.0 | A | 58 | Claude Code |
| dotcraft-unityDotHarness/dotcraft-unity | Skill | 24 | 11d ago | Apache-2.0 | A | 64 | Codex |
| unityDotHarness/dotcraft-unity | Skill | 24 | 11d ago | Apache-2.0 | A | 32 | Codex |