zero-inbox

zero-inbox is a skill for Claude Code, Codex from getnao/sylph. It costs 0 tokens per session (1,641 once invoked), scanned A, original, no licence file.

A workflow for triaging incoming and sent messages as part of a zero-inbox routine, the practice of keeping an email or message queue cleared.

In plain words
What is it for?
Use it to fetch incoming messages and sent messages during message triage.
Why use it?
It gives the described routine a way to fetch messages before deciding how to handle them.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/getnao/sylph/zero-inbox
Any agent
npx skills add getnao/sylph --skill zero-inbox
Clone the repo
git clone --depth 1 https://github.com/getnao/sylph

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for zero-inbox

README.md
[![agentmods](https://agentmods.dev/badge/skills/getnao/sylph/zero-inbox.svg)](https://agentmods.dev/skills/getnao/sylph/zero-inbox)
Your own site
<a href="https://agentmods.dev/skills/getnao/sylph/zero-inbox"><img src="https://agentmods.dev/badge/skills/getnao/sylph/zero-inbox.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,641 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.01641
Opus 5 $0.00000 $0.00821
Sonnet 5 $0.00000 $0.00328
Haiku 4.5 $0.00000 $0.00164

Measured 5d ago against content hash 85b304527de2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

zero-inbox 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 5d 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.

.claude/skills/zero-inbox/SKILL.md · 181 lines

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.

Read it on GitHub

Changes

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.

  1. 5d ago First seen · 181 lines · 0 tokens per session scan A 85b304527de2

Subscribe to this mod's changes

zero-inbox is a skill published in the GitHub repository getnao/sylph (195 stars, last pushed 3mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,641 tokens. 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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