nyx

nyx is a skill for Claude Code, Codex from itsribbZ/Godspeed. It costs 96 tokens per session (901 once invoked), scanned A, original, MIT.

A scheduled or on-demand audit of skill instruction files for signs that they contain unused or performative material. It creates a dated report with items to remove or investigate.

In plain words
What is it for?
Use it to scan all skill files, measure suspicious sections, count learning notes, and produce review recommendations without deleting anything.
Why use it?
It helps maintain a skill collection by identifying instructions that may be dead infrastructure or supported by claims without evidence.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: model in frontmatter; reads .claude/ paths.

Good fit Use it to scan all skill files, measure suspicious sections, count learning notes, and produce review recommendations without deleting anything.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/itsribbz/godspeed/nyx
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.

Any agent
npx skills add itsribbZ/Godspeed --skill nyx
Clone the repo
git clone --depth 1 https://github.com/itsribbZ/Godspeed

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 nyx

README.md
[![agentmods](https://agentmods.dev/badge/skills/itsribbz/godspeed/nyx.svg)](https://agentmods.dev/skills/itsribbz/godspeed/nyx)
Your own site
<a href="https://agentmods.dev/skills/itsribbz/godspeed/nyx"><img src="https://agentmods.dev/badge/skills/itsribbz/godspeed/nyx.svg" alt="Measured on agentmods" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 901 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 5.1 $0.00096 $0.00901
Opus 5 $0.00048 $0.00451
Sonnet 5 $0.00019 $0.00180
Haiku 4.5 $0.00010 $0.00090

Measured 6d ago against content hash 3088ac4b427b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

nyx 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 6d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (nyx.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

toke/automations/homer/sleep/nyx/SKILL.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nyx — The Theater Auditor

Nyx was the primordial goddess of the night in Greek myth. In Homer, she audits the skill ecosystem for dead infrastructure while the user sleeps.

Role

Nyx is a sleep-time agent (L6). She runs on-demand or on a cron schedule and scans every skill SKILL.md in ~/.claude/skills/ for theater — version-tagged sections, NEW/UPGRADE labels, long spec blocks with zero file:line receipts, and "expected fire rate" hand-waving.

Nyx does NOT delete anything. She proposes PRUNE candidates and INVESTIGATE candidates via a dated report. the user reviews and greenlights per-item deletions through the standard v4.4 deletion proposal protocol.

What Nyx scans

For each ~/.claude/skills/<name>/SKILL.md:

  1. Read the file
  2. Run Oracle.detect_theater(text) — same heuristic yesterday's manual godspeed audit used
  3. Capture: size_bytes, line_count, theater_ratio, recommendation, suspect sections
  4. Also count _learnings.md entries (indicator of actual skill fires)

Output

A dated markdown report at Toke/automations/homer/sleep/nyx/reports/nyx_audit_YYYY-MM-DD.md:

  • Summary header — skills audited, total bytes, PRUNE + INVESTIGATE counts
  • Top theater ratios table — worst 25 skills by ratio, with learning entry counts
  • PRUNE candidates section — deletion proposals ready for the user's greenlight
  • Next steps — how to act on the report

When Nyx is useful

  • After a build sprint — detect if new code landed without actual fire data
  • Before a close-session — sanity-check what shipped vs what was real
  • Weekly — track theater drift over time; healthy ecosystems shrink theater, sick ones grow it
  • After a skill upgrade — verify the upgrade didn't add dead weight

Integration with Zeus + Oracle

  • Zeus can dispatch Nyx as a maintenance task (rare — Nyx is mostly standalone)
  • Oracle provides detect_theater() — Nyx is a thin shell around Oracle's theater heuristic
  • Sleep CLI (sleep_cli.py) dispatches Nyx via sleep run nyx

Read the full file on GitHub · 64 lines

Files

What ships with it

1 file 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.

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. 6d ago First seen · 64 lines · 96 tokens per session scan A 3088ac4b427b

Subscribe to this mod's changes

nyx is a skill published in the GitHub repository itsribbZ/Godspeed (1 stars, last pushed 2mo ago), licensed MIT. It adds 96 tokens to every session and 901 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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