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 tellmefrankie/news-engine --skill ev-calculatorgit clone --depth 1 https://github.com/tellmefrankie/news-engineWrote 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/tellmefrankie/news-engine/ev-calculator)<a href="https://agentmods.dev/skills/tellmefrankie/news-engine/ev-calculator"><img src="https://agentmods.dev/badge/skills/tellmefrankie/news-engine/ev-calculator/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/tellmefrankie/news-engine/ev-calculator"><img src="https://agentmods.dev/badge/skills/tellmefrankie/news-engine/ev-calculator.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 | $0.00000 | $0.00812 |
| Opus 5 | $0.00000 | $0.00406 |
| Sonnet 5 | $0.00000 | $0.00162 |
| Haiku 4.5 | $0.00000 | $0.00081 |
Grade A, and why
ev-calculator 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 11d 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Expected Value Calculator (Free)
Calculate expected value for stock positions using scenario-based modeling. Combines options data, earnings history, and short interest to size positions with mathematical discipline.
What it does
For each position, builds probability-weighted scenarios:
- Bull case: Catalyst-driven upside (earnings beat, sector rotation, short squeeze)
- Base case: Normal trading range continuation
- Bear case: Downside risks (earnings miss, macro shock, sector rotation out)
Weights scenarios by:
- Options sentiment (real calls vs puts, excluding lottery)
- Historical earnings surprise patterns
- Short interest level and squeeze potential
- Sector momentum
Usage
Calculate expected value for my portfolio:
- RXRX: 500 shares @ $3.26, stop-loss $2.85
- KTOS: 200 shares @ $56.99, stop-loss $52.00
- TEM: 100 shares @ $48.46, stop-loss $49.75
Use 3 scenarios (bull/base/bear) with probabilities.
Include confidence level and data quality assessment.
Example Output
=== EV Analysis — 2026-05-13 ===
RXRX $3.26 | Position: $1,630
Bull (30%): $4.80 → +47.2% → EV: +$770
Base (45%): $3.40 → +4.3% → EV: +$63
Bear (25%): $2.85 → -12.6% → EV: -$205
─────────────────────────────────
Weighted EV: +$628 (+38.5%) [HIGH confidence]
Note: Options P/C 0.38 supports bull case. 84% lottery calls stripped.
KTOS $56.99 | Position: $11,398
Bull (35%): $68.00 → +19.3% → EV: +$770
Base (40%): $58.50 → +2.6% → EV: +$121
Bear (25%): $52.00 → -8.8% → EV: -$249
─────────────────────────────────
Weighted EV: +$642 (+5.6%) [MEDIUM confidence]
Note: Sector (defense) momentum positive. IV elevated at 170%.
TEM $48.46 | Position: $4,846
Bull (25%): $56.00 → +15.6% → EV: +$188
Base (40%): $49.00 → +1.1% → EV: +$22
Bear (35%): $49.75 → +2.7% → EV: STOP
─────────────────────────────────
Weighted EV: -$41 (-0.8%) [LOW confidence]
⚠️ BELOW STOP-LOSS — review position
Confidence Levels
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.
- 11d ago First seen · 78 lines · 0 tokens per session scan A 3f3b139d3991
ev-calculator is a skill published in the GitHub repository tellmefrankie/news-engine (1 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 812 tokens. 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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