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.
npx agentmods add skills/jaredlangleycc/nightshift-os/voice-rulesnpx skills add jaredlangleycc/nightshift-os --skill voice-rulesgit clone --depth 1 https://github.com/jaredlangleycc/nightshift-osWrote 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/jaredlangleycc/nightshift-os/voice-rules)<a href="https://agentmods.dev/skills/jaredlangleycc/nightshift-os/voice-rules"><img src="https://agentmods.dev/badge/skills/jaredlangleycc/nightshift-os/voice-rules.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 | $0.00105 | $0.01835 |
| Opus 5 | $0.00053 | $0.00918 |
| Sonnet 5 | $0.00021 | $0.00367 |
| Haiku 4.5 | $0.00011 | $0.00184 |
Grade A, and why
voice-rules 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.
How it starts
The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Voice Rules
STATUS: Template. This skill becomes the user's specific voice profile after
/customize-from-assessmentruns (assessment-derived voice) and again after/capture-voiceruns (sample-derived voice). Until then, it uses safe defaults.
This skill enforces the user's voice on every piece of writing produced by other skills. It is not optional. Every skill that ships text checks against voice-rules before showing the draft.
Voice population: two sources
Voice-rules is populated from two complementary skills:
- [[customize-from-assessment]] — populates the initial voice profile from the user's assessment answers (Section 4). Runs Day 1. User-stated voice.
- [[voice-from-samples]] — extracts voice patterns from 3-5 chunks of the user's real writing. Runs after they have a corpus. Sample-derived voice, takes precedence over assessment-stated voice when they conflict.
When both have run, voice-rules contains layered signal: aspirational/stated profile from assessment AND extracted patterns from real writing. Sample-derived takes precedence on conflict; both are documented so the user can see the gap.
When this skill triggers
Every time another skill produces written output. It does not need to be invoked explicitly.
It also triggers when the user says:
- "Does this sound like me?"
- "Run voice check on this"
- "Voice-scan this"
- "Is this AI-sounding?"
The user's voice (populated by customize-from-assessment)
Voice archetype
Archetype: {{ARCHETYPE}}
One or two of: mentor, friend, challenger, curator, operator, storyteller, analyst, coach. Until customized, defaults to
operator.
Tone profile
Tone: {{TONE_PROFILE}}
Rendered as 10 word-pair ratings, e.g.,
Warm:4 · Sharp:2 · Formal:1 · Casual:4 · Playful:3 · Serious:3 · Direct:5 · Punchy:4. Until customized, defaults to balanced midpoints.
BANNED PHRASES
These phrases must not appear in any draft. If a draft contains one, rewrite before showing the user.
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.
- 5d ago First seen · 209 lines · 0 tokens per session scan A 1dcef043637b
voice-rules is a skill published in the GitHub repository jaredlangleycc/nightshift-os (3 stars, last pushed 1mo ago), licensed MIT. It adds 105 tokens to every session and 1,835 once invoked, about $0.0005 per session on Opus 5. 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 2026-08-31.
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