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 JoelLewis/finance_skills --skill settlement-clearinggit clone --depth 1 https://github.com/JoelLewis/finance_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/joellewis/finance_skills/settlement-clearing)<a href="https://agentmods.dev/skills/joellewis/finance_skills/settlement-clearing"><img src="https://agentmods.dev/badge/skills/joellewis/finance_skills/settlement-clearing/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/joellewis/finance_skills/settlement-clearing"><img src="https://agentmods.dev/badge/skills/joellewis/finance_skills/settlement-clearing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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 | $0.00135 | $0.11181 |
| Opus 5.5 | $0.00054 | $0.04472 |
| Sonnet 5.5 | $0.00027 | $0.02236 |
| Haiku 4.5 | $0.00014 | $0.01118 |
Grade A, and why
settlement-clearing 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.
How it starts
The opening of the file, as written. The whole thing — 268 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Settlement & Clearing
Core Concepts
Settlement Cycle
The settlement cycle defines the number of business days between trade date (T) and settlement date (S), during which the buyer must deliver payment and the seller must deliver securities. The settlement cycle has shortened over time to reduce counterparty risk and systemic exposure.
Current US settlement cycles:
- T+1 — US equities (exchange-listed and OTC), corporate bonds, municipal bonds, and unit investment trusts. Effective May 28, 2024, the SEC shortened the standard settlement cycle from T+2 to T+1 under amended Exchange Act Rule 15c6-1(a) (SEC Release No. 34-96930). The move to T+1 reduced the window of counterparty and market risk by approximately 50%, but imposed significant operational demands on market participants to compress post-trade processing into a single business day.
- T+0 (same-day settlement) — US government securities (Treasury bills, notes, bonds, and agency securities) settle on trade date or T+1 depending on the instrument and market convention. Options contracts settle T+0 (premium payment) for the premium, with exercise settlement following the underlying's settlement cycle. Money market instruments, including commercial paper and repurchase agreements, typically settle same-day or T+1.
- T+2 — Remains the standard settlement cycle for many international equity markets (though Europe, the UK, Canada, and others have moved or are moving to T+1). Certain cross-border transactions may still settle on a T+2 or longer basis depending on the foreign market's settlement conventions.
Settlement date calculation: Settlement dates are computed using business days, excluding weekends and market holidays. The SIFMA holiday calendar governs US fixed-income markets; exchange calendars govern equity markets. For cross-border trades, settlement date calculation must account for holidays in both the buyer's and seller's jurisdictions — a mismatch can cause unintended settlement delays.
What ships with it
1 file 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.
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.
- 1mo ago First seen · 268 lines · 135 tokens per session scan A 76927a74de87
settlement-clearing is a skill published in the GitHub repository JoelLewis/finance_skills (218 stars, last pushed 3mo ago), licensed MIT. It adds 135 tokens to every session and 11,181 once invoked, about $0.0005 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 2026-08-30.
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