joule-ledger

joule-ledger is a skill for Claude Code, Codex from RegardV/zhc-os-hermes. It costs 18 tokens per session (462 once invoked), scanned A, original, MIT.

Instructions for recording completed tasks in a Joule payroll ledger with task details and optional quality scores.

In plain words
What is it for?
Use it after ZHC tasks to add an agent name, summary, joule estimate, C score, and D score to the ledger, then verify the JSON remains valid.
Why use it?
It creates an append-only record of work and estimates the energy or effort value associated with each task.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it after ZHC tasks to add an agent name, summary, joule estimate, C score, and D score to the ledger, then verify the JSON remains valid.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/regardv/zhc-os-hermes/joule-ledger
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 RegardV/zhc-os-hermes --skill joule-ledger
Clone the repo
git clone --depth 1 https://github.com/RegardV/zhc-os-hermes

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 joule-ledger

README.md
[![agentmods](https://agentmods.dev/badge/skills/regardv/zhc-os-hermes/joule-ledger/github.svg)](https://agentmods.dev/skills/regardv/zhc-os-hermes/joule-ledger)
Your own site
<a href="https://agentmods.dev/skills/regardv/zhc-os-hermes/joule-ledger"><img src="https://agentmods.dev/badge/skills/regardv/zhc-os-hermes/joule-ledger/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.

agentmods 80×15 button for joule-ledger

Your own site · 80×15
<a href="https://agentmods.dev/skills/regardv/zhc-os-hermes/joule-ledger"><img src="https://agentmods.dev/badge/skills/regardv/zhc-os-hermes/joule-ledger.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 18 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 462 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 $0.00018 $0.00462
Opus 5.5 $0.00007 $0.00185
Sonnet 5.5 $0.00004 $0.00092
Haiku 4.5 $0.00002 $0.00046

Measured 1mo ago against content hash a337f83ddcbc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

joule-ledger 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 1mo 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.

skills/joule-ledger/SKILL.md · 68 lines

What it actually says

Joule Ledger

When to Use

After completing any ZHC task — every profile must log joules and C/D scores.

Procedure

  1. Gather: agent_name, task_summary, optional c_score (1-10), d_score (1-10).
  2. Estimate joules: (len(task_summary) * 1000) + 50000 unless /usage provides better estimate.
  3. Append entry to ~/zhc-os/ledger/joule_ledger.json:
{
  "timestamp": "<ISO8601>",
  "agent_name": "<profile name>",
  "task_summary": "<summary>",
  "joules": <number>,
  "c_score": <float>,
  "d_score": <float>
}
  1. Use terminal + Python or jq to append atomically:
python3 -c "
import json, os
from datetime import datetime
ledger = os.path.expanduser('~/zhc-os/ledger/joule_ledger.json')
with open(ledger) as f: data = json.load(f)
data.append({
  'timestamp': datetime.now().isoformat(),
  'agent_name': 'AGENT',
  'task_summary': 'TASK',
  'joules': JOULES,
  'c_score': C,
  'd_score': D
})
with open(ledger, 'w') as f: json.dump(data, f, indent=2)
print('Joule entry logged')
"

Replace AGENT, TASK, JOULES, C, D with actual values.

  1. Confirm file valid JSON after append.

Pitfalls

  • Do not overwrite ledger — append only.
  • Do not zero d_score when any risk existed.
  • Path must be ~/zhc-os/ledger/joule_ledger.json.

Verification

tail -20 ~/zhc-os/ledger/joule_ledger.json
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. 1mo ago First seen · 68 lines · 18 tokens per session scan A a337f83ddcbc

Subscribe to this mod's changes

joule-ledger is a skill published in the GitHub repository RegardV/zhc-os-hermes (2 stars, last pushed 3mo ago), licensed MIT. It adds 18 tokens to every session and 462 once invoked, about $0.0001 per session on Opus 5.5. 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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