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/islambaraka90/fintech-algorithms-library/fintech-algorithmsnpx skills add IslamBaraka90/Fintech-Algorithms-Library --skill fintech-algorithmsgit clone --depth 1 https://github.com/IslamBaraka90/Fintech-Algorithms-LibraryWrote 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/islambaraka90/fintech-algorithms-library/fintech-algorithms)<a href="https://agentmods.dev/skills/islambaraka90/fintech-algorithms-library/fintech-algorithms"><img src="https://agentmods.dev/badge/skills/islambaraka90/fintech-algorithms-library/fintech-algorithms.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 | $0.00248 | $0.02857 |
| Opus 5 | $0.00124 | $0.01429 |
| Sonnet 5 | $0.00050 | $0.00571 |
| Haiku 4.5 | $0.00025 | $0.00286 |
Grade A, and why
fintech-algorithms 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.
How it starts
The opening of the file, as written. The whole thing — 224 lines — stays where its author put it; the contents beside it link to each section on GitHub.
fintech-algorithms
675 pure functions for market, financial and statistical calculations. Plain arrays and objects in, plain values out. Zero runtime dependencies, Node >= 22, ESM.
Docs: https://docs.thefintechbuilder.com · Authoritative agent guide: https://docs.thefintechbuilder.com/guides/ai-agents/
Non-negotiables
Four rules. Breaking any one produces output that looks right and is wrong.
- Never invent an import path, a function name, or a parameter. Every
subpath mirrors its docs URL exactly, which makes a plausible guess wrong in
a way that reads as correct. Look it up —
scripts/lookup.mjsor the resolution order below. If the topic does not exist, say so and stop. - Never guess a returned field name. Return-key casing is not consistent
across the library:
bollingerBandsreturnspercent_b,macdrows returnfastEma. Read the captured example output for that topic. Seereferences/pitfalls.md. - State the verification tier on any numeric claim.
verified(601 topics) means the arithmetic is replayed and asserted on every build against expected values the catalog computed with a Python implementation written alongside the TypeScript — cross-language parity, not an independent third-party figure. Say it that way if asked.contract(74 topics) means the signature and shape are checked but nothing asserts the numbers. - Analysis, not advice. These functions compute quantities. An indicator crossing is an observation about a series — not a prediction, not a signal, and never a recommendation for a specific person's money. Report what was computed, on what input, at which tier. If asked what to buy or sell, say that is a question for a licensed adviser.
The library does not fetch data
There is no HTTP client, no vendor SDK, no API key, no node:fs. If a task
needs prices, the caller supplies them. This is deliberate: vendor APIs get
rewritten every few years and algorithms do not.
What ships with it
5 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.
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 · 224 lines · 248 tokens per session scan A 8a91fad4a849
fintech-algorithms is a skill published in the GitHub repository IslamBaraka90/Fintech-Algorithms-Library (4 stars, last pushed 18d ago), licensed MIT. It adds 248 tokens to every session and 2,857 once invoked, about $0.0012 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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