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/bromso/metapowers/ledgernpx skills add bromso/metapowers --skill ledgergit clone --depth 1 https://github.com/bromso/metapowersWrote 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/bromso/metapowers/ledger)<a href="https://agentmods.dev/skills/bromso/metapowers/ledger"><img src="https://agentmods.dev/badge/skills/bromso/metapowers/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 5.1 | $0.00011 | $0.00363 |
| Opus 5 | $0.00005 | $0.00181 |
| Sonnet 5 | $0.00002 | $0.00073 |
| Haiku 4.5 | $0.00001 | $0.00036 |
Grade A, and why
ledger scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Ledger
Post journal entries to the general ledger for "$ARGUMENTS". Organize all debits and credits by account and calculate running balances.
Prerequisites
Read .metapowers/accounting/$ARGUMENTS/02-journal.md for the journal entries.
Process
-
Set up ledger accounts:
- Create a T-account or tabular format for each account in the chart of accounts
- Include the account number, name, and normal balance side (debit or credit)
- Carry forward any opening balances from the prior period
-
Post journal entries:
- Transfer each journal entry to the appropriate ledger accounts
- Record the date, journal entry reference (JE-001, etc.), and amount
- Post debits to the debit side and credits to the credit side
- Calculate the running balance after each posting
-
Verify completeness:
- Cross-reference every journal entry to confirm it has been posted
- Check that no entries were double-posted or missed
- Ensure running balances are mathematically correct
-
Write the artifact to
.metapowers/accounting/$ARGUMENTS/03-ledger.mdwith sections:- General Ledger — each account with all postings and running balance
- Account Summary — closing balance for each account
- Cross-Reference — journal entry to ledger posting map
Output
The ledger written to .metapowers/accounting/$ARGUMENTS/03-ledger.md. Present a summary highlighting:
- Number of active accounts
- Top accounts by transaction volume
- Closing balances for key accounts
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 · 42 lines · 11 tokens per session scan A bb2cbac7877a
ledger is a skill published in the GitHub repository bromso/metapowers (1 stars, last pushed 4mo ago), licensed MIT. It adds 11 tokens to every session and 363 once invoked, about $0.0001 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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