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/simota/agent-skills/ledgernpx skills add simota/agent-skills --skill ledgergit clone --depth 1 https://github.com/simota/agent-skillsWrote 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/simota/agent-skills/ledger)<a href="https://agentmods.dev/skills/simota/agent-skills/ledger"><img src="https://agentmods.dev/badge/skills/simota/agent-skills/ledger.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 | $0.00042 | $0.05540 |
| Opus 5 | $0.00021 | $0.02770 |
| Sonnet 5 | $0.00008 | $0.01108 |
| Haiku 4.5 | $0.00004 | $0.00554 |
Grade A, and why
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 yesterday.
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.
Copies of this mod
1 near-identical copy found in the catalogue:
- ledger — 91% identical, 14 lines differ
How it starts
The opening of the file, as written. The whole thing — 320 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Ledger
"Every cloud resource has a price. Every price deserves a question."
You are the FinOps engineer for the ecosystem. You believe cost visibility is a prerequisite for optimization, and optimization is a continuous discipline — not a one-time project. You transform IaC definitions and cloud usage patterns into actionable cost intelligence: estimates, anomalies, right-sizing recommendations, and commitment strategies. You deliver financial accountability without sacrificing engineering velocity.
Principles: Visibility before optimization · Unit economics over total spend · Automate cost governance · Commitments follow data · Waste is a defect
What ships with it
16 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.
- _common 10 B
- reference/_common 13 B
- reference/ai-gpu-cost.md 11 KB
- reference/autorun-schema.md 822 B
- reference/cloud-pricing-models.md 4.6 KB
- reference/cost-anomaly-detection.md 4.8 KB
- reference/cost-governance.md 5.4 KB
- reference/cost-tagging-strategy.md 9.5 KB
- reference/cost-visibility.md 5.5 KB
- reference/finops-framework.md 8.8 KB
- reference/greenops-sustainability.md 10 KB
- reference/handoff-formats.md 3.7 KB
- reference/iac-cost-estimation.md 4.1 KB
- reference/optimization-strategies.md 5.3 KB
- reference/reserved-savings-plans.md 8.1 KB
- reference/unit-economics.md 9.3 KB
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.
- yesterday First seen · 320 lines · 42 tokens per session scan A d07d2bc55efe
ledger is a skill published in the GitHub repository simota/agent-skills (75 stars, last pushed 2d ago), licensed MIT. It adds 42 tokens to every session and 5,540 once invoked, about $0.0002 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 2026-09-03.
Other skills, from other repositories
multi-service-orchestration
PM2 process management, backend/frontend cascade execution, parallel worktree builds, and cross-service integration testing.
dd-synthesis
Synthesize findings from multiple specialist agents into a coherent investment recommendation. Use when combining reports from 9+ specialist agents into a single decision document.
dd-report-format
Standard output format for due diligence analysis reports. Use when producing your final analysis to ensure consistency across all specialist agents.
dd-risk-scoring
Calculate weighted risk scores from specialist agent reports. Use when synthesizing multiple due diligence reports into an overall investment risk assessment.
aws-cost-analysis
Analyze AWS costs by service, account, and time period. Identifies top spenders, cost anomalies, and optimization opportunities. Use when reviewing cloud spend, preparing cost reports, or investigating unexpected charges.
check-deployment-status
Check the health and sync status of all ArgoCD applications across clusters. Identifies out-of-sync, degraded, or unhealthy deployments and provides actionable remediation steps. Use when monitoring deployments, troubleshooting sync failures, or verifying environment health after a release.