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 skills add PostOakLabs/ainumbers --skill cecl-quarter-closegit clone --depth 1 https://github.com/PostOakLabs/ainumbersWrote 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/postoaklabs/ainumbers/cecl-quarter-close)<a href="https://agentmods.dev/skills/postoaklabs/ainumbers/cecl-quarter-close"><img src="https://agentmods.dev/badge/skills/postoaklabs/ainumbers/cecl-quarter-close/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.
<a href="https://agentmods.dev/skills/postoaklabs/ainumbers/cecl-quarter-close"><img src="https://agentmods.dev/badge/skills/postoaklabs/ainumbers/cecl-quarter-close.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00040 | $0.00496 |
| Opus 5.5 | $0.00016 | $0.00198 |
| Sonnet 5.5 | $0.00008 | $0.00099 |
| Haiku 4.5 | $0.00004 | $0.00050 |
Grade A, and why
cecl-quarter-close 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 15d 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
CECL quarter close
Close the CECL quarter locally with helmd and prove the allowance rollforward.
Prompt
Close the quarter's CECL allowance where the numbers never leave your machine.
- helmd catalog.search for the CECL allowance pack; record the workflow id and manifest digest.
- helmd workflow.dry_run the pack against this quarter's synthetic loan tape. Fix any gate failure before the real run.
- helmd workflow.run the pack. Poll helmd artifact.get for the execution_hash and per-step digests.
- helmd artifact.verify the run against the manifest digest. State pass/fail.
- Cross-check one number on the public worker: find_tool for the allowance or amortization tool, run the same rollforward input remotely, and compare hashes. If they differ, your local pack and the published kernel have drifted; quote both.
- build_session_receipt over the local run and the remote cross-check; give me the ledger link.
- Write the close note for the controller: the allowance figure, the manifest digest it came from, the cross-check result, and the ledger link. If a named tool is not in your tool list, call call_tool with { "name": "", "arguments": { … } }. It runs the same validation and returns the same receipt.
How to run
Connect an MCP-capable host to https://mcp.ainumbers.co/mcp, then give the prompt above to the assistant.
Use synthetic inputs only. Never paste personal or production data.
Verify what came back
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.
- 15d ago Changed e735fe66270b
- 19d ago First seen · 39 lines · 40 tokens per session scan A 92074c3b2d35
cecl-quarter-close is a skill published in the GitHub repository PostOakLabs/ainumbers (11 stars, last pushed yesterday), licensed MIT. It adds 40 tokens to every session and 496 once invoked, about $0.0002 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 2026-09-27.
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