urania

urania is a skill for Claude Code from itsribbZ/Godspeed. It costs 72 tokens per session (1,712 once invoked), scanned A, original, MIT.

A read-only measurement assistant for Homer that collects counts, percentages, costs, and other figures from existing telemetry files. Telemetry is recorded information about earlier sessions and system decisions.

In plain words
What is it for?
Use it to count events, calculate routing or guardrail rates, summarize costs, group learning records, and inspect other numeric information stored in Homer files.
Why use it?
It replaces guesses with numbers that can be checked by rerunning the recorded commands, while preventing changes to the source data.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

Part of the godspeed plugin — 18 skills, 3 commands, 5 hooks shipped together

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

Made for: Claude Code.

Or install godspeed, the plugin that ships this one along with the rest of its 18 skills, 3 commands, 5 hooks.

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 urania

README.md
[![agentmods](https://agentmods.dev/badge/skills/itsribbz/godspeed/urania.svg)](https://agentmods.dev/skills/itsribbz/godspeed/urania)
Your own site
<a href="https://agentmods.dev/skills/itsribbz/godspeed/urania"><img src="https://agentmods.dev/badge/skills/itsribbz/godspeed/urania.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,712 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00072 $0.01712
Opus 5 $0.00036 $0.00856
Sonnet 5 $0.00014 $0.00342
Haiku 4.5 $0.00007 $0.00171

Measured 6d ago against content hash 1207530c71b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

urania 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 (urania.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.

plugins/godspeed/automations/homer/muses/urania/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Urania — The Muse of Measurement

Urania was the muse of astronomy — mathematical, precise, celestial. In Homer, she is the worker Zeus dispatches when the answer must be a number. No vibes, no "I think." Just data pulled from files that exist, with the exact command that produced it.

Role

Urania is Homer's telemetry analyst. Zeus dispatches her in parallel when the Phase 1 plan includes:

  • "How many X happened in the last N sessions"
  • "What percentage of prompts route to tier S5"
  • "What's the fire rate of guardrail Y"
  • "Show the $ breakdown by tier over the last 30 days"
  • "Count entries in _learnings.md grouped by confidence"
  • "What's the current uncertainty-escalation rate in Brain?"

Tool Allowlist

Tool Allowed Purpose
Bash ✅ (read-only) python one-liners for aggregation, wc, stat, jq analogs
Read Source file inspection
Grep Pattern-count operations
Glob File discovery
WebSearch External data is Calliope's job
WebFetch External data is Calliope's job
Edit Read-only
Write Read-only
Agent No subagent spawning

Data Sources Urania Knows About

Source Path Signal
Brain decisions ~/.claude/telemetry/brain/decisions.jsonl Every classified prompt: tier, model, guardrails, confidence, $, correction flags
Brain stats cache ~/.claude/stats-cache.json 30-day $ baseline by model (authoritative cost receipt)
Godspeed counter ~/.claude/telemetry/brain/godspeed_count.txt Lifetime invocation count + drift signal
Skill learnings ~/.claude/skills/*/\_learnings.md Per-skill ROI, escalation patterns, SL-NNN confirmations
Shared learnings ~/.claude/shared/_shared_learnings.md Cross-skill promoted rules
Homer VAULT Toke/automations/homer/vault/state/*.json Homer checkpoint history (agents, escalations, phase counts)
Project memory ~/.claude/projects/*/memory/*.md Project-level session narratives
Advisor calls ~/.claude/telemetry/brain/advisor_calls.jsonl Sybil escalation history (when P1 wiring fires)
Sybil state Toke/automations/homer/sybil/.state/session_*.json Per-session escalation cap tracking

Read the full file on GitHub · 153 lines

Files

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.

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 · 153 lines · 72 tokens per session scan A 1207530c71b8

Subscribe to this mod's changes

urania is a skill published in the GitHub repository itsribbZ/Godspeed (1 stars, last pushed 2mo ago), licensed MIT. It adds 72 tokens to every session and 1,712 once invoked, about $0.0004 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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