A guide for reading Unusual Whales Periscope charts, which show options-market data such as dealer positioning and expected price reactions. It focuses on chart elements including Gamma, Charm, Vanna, GEX, and 0DTE options.

Use it when analysing Periscope charts, 0DTE straddle breakeven cones, or the MM hedge reaction Excel decoder. The input does not specify further operations.

It helps interpret specialised chart labels, coloured bars, heat maps, and breakeven lines that are difficult to understand without options-market context.

How cobriensr/Options-Strike-Calculator configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to cobriensr/Options-Strike-Calculator. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/cobriensr/Options-Strike-Calculator/main/.claude/skills/periscope/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/cobriensr/Options-Strike-Calculator

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/cobriensr/options-strike-calculator/periscope/github.svg)](https://agentmods.dev/skills/cobriensr/options-strike-calculator/periscope)

Your own site

<a href="https://agentmods.dev/skills/cobriensr/options-strike-calculator/periscope"><img src="https://agentmods.dev/badge/skills/cobriensr/options-strike-calculator/periscope/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/cobriensr/options-strike-calculator/periscope"><img src="https://agentmods.dev/badge/skills/cobriensr/options-strike-calculator/periscope.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 444 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 10,526 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

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	$0.00444	$0.10526
Opus 5.5	$0.00178	$0.04210
Sonnet 5.5	$0.00089	$0.02105
Haiku 4.5	$0.00044	$0.01053

Measured 8d ago against content hash e079180146e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

periscope 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 8d 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.

.claude/skills/periscope/SKILL.md · 479 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

4 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.

Changes

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.

8d ago Changed · -2 lines e079180146e7
2mo ago First seen · 481 lines · 444 tokens per session scan A 4067a2714d71

Subscribe to this mod's changes

periscope is a skill published in the GitHub repository cobriensr/Options-Strike-Calculator (22 stars, last pushed today), licensed AGPL-3.0. It adds 444 tokens to every session and 10,526 once invoked, about $0.0018 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.

0dte Analytics and metrics Finance and fintech anthropic black-scholes claude fintech machine-learning

periscope next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
periscopecobriensr/Options-Strike-Calculator	Skill	22	today	AGPL-3.0	A	444	Claude Code
liter-llm-running-the-proxyxberg-io/liter-llm	Skill	264	yesterday	MIT	A	45	Claude Code
fintech-expertpersonamanagmentlayer/pcl	Skill	44	11d ago	Apache-2.0	A	73	Claude Code
alphacouncil-agentZhao73/alphacouncil-agent	Skill	3	1mo ago	MIT	A	58	Claude Code
alphacouncil-method-lensesZhao73/alphacouncil-agent	Skill	3	1mo ago	MIT	A	100	Claude Code, Codex
public-equity-investingZhao73/alphacouncil-agent	Skill	3	1mo ago	MIT	A	121	Claude Code
investment-bankingZhao73/alphacouncil-agent	Skill	3	1mo ago	MIT	A	88	Claude Code

Options-Strike-Calculator: Skill for Claude Code