stock-analyzer

stock-analyzer is a skill for Claude Code from FrancyJGLisboa/agent-skill-creator. It costs 48 tokens per session (3,194 once invoked), scanned A, original, MIT.

A stock and exchange-traded fund analysis tool that calculates common chart indicators such as RSI, MACD, Bollinger Bands, and moving averages. These indicators use price data to help describe possible market trends or conditions.

In plain words
What is it for?
Use it to analyze ticker symbols, compare stocks or ETFs, identify chart patterns, generate indicator-based buy or sell signals, and monitor technical conditions.
Why use it?
It removes the need to calculate indicators and interpret charts manually. It can combine several indicators when producing trading signals or comparing investments.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the agent-skill-creator plugin — 5 skills, 1 plugin shipped together

Good fit Use it to analyze ticker symbols, compare stocks or ETFs, identify chart patterns, generate indicator-based buy or sell signals, and monitor technical conditions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/francyjglisboa/agent-skill-creator/stock-analyzer
About the project

Agent Skills Platform turns documented work and supporting evidence into tested, installable skills for coding agents. Teams use it to review, publish, maintain, and safely reuse agent workflows, with the catalogue entries serving as skills and plugins built for that ecosystem.

FrancyJGLisboa/agent-skill-creator · 2,378 stars · on GitHub · francyjglisboa.github.io

Install

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.

Any agent
npx skills add FrancyJGLisboa/agent-skill-creator --skill stock-analyzer
Clone the repo
git clone --depth 1 https://github.com/FrancyJGLisboa/agent-skill-creator

Made for: Claude Code.

Or install agent-skill-creator, the plugin that ships this one along with the rest of its 5 skills, 1 plugin.

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.

agentmods badge for stock-analyzer

README.md
[![agentmods](https://agentmods.dev/badge/skills/francyjglisboa/agent-skill-creator/stock-analyzer/github.svg)](https://agentmods.dev/skills/francyjglisboa/agent-skill-creator/stock-analyzer)
Your own site
<a href="https://agentmods.dev/skills/francyjglisboa/agent-skill-creator/stock-analyzer"><img src="https://agentmods.dev/badge/skills/francyjglisboa/agent-skill-creator/stock-analyzer/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.

agentmods 80×15 button for stock-analyzer

Your own site · 80×15
<a href="https://agentmods.dev/skills/francyjglisboa/agent-skill-creator/stock-analyzer"><img src="https://agentmods.dev/badge/skills/francyjglisboa/agent-skill-creator/stock-analyzer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,194 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.03194
Opus 5 $0.00024 $0.01597
Sonnet 5 $0.00010 $0.00639
Haiku 4.5 $0.00005 $0.00319

Measured 10d ago against content hash 5b56aebdaaf2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

stock-analyzer 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 10d ago.

The scan reads SKILL.md. This mod also ships 10 executable files (scripts/dependency_health.py, scripts/evolve.py, scripts/main.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

references/examples/stock-analyzer/SKILL.md · 424 lines

How it starts

The opening of the file, as written. The whole thing — 424 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stock Analyzer Skill - Technical Specification

Version: 1.0.0 Type: Simple Skill Domain: Financial Technical Analysis Created: 2025-10-23


Overview

The Stock Analyzer Skill provides comprehensive technical analysis capabilities for stocks and ETFs, utilizing industry-standard indicators and generating actionable trading signals.

Purpose

Enable traders and investors to perform technical analysis through natural language queries, eliminating the need for manual indicator calculation or chart interpretation.

Core Capabilities

  1. Technical Indicator Calculation: RSI, MACD, Bollinger Bands, Moving Averages
  2. Signal Generation: Buy/sell recommendations based on indicator combinations
  3. Stock Comparison: Rank multiple stocks by technical strength
  4. Pattern Recognition: Identify chart patterns and price action setups
  5. Monitoring & Alerts: Track stocks and alert on technical conditions

Activation

This skill activates through the description field in the SKILL.md frontmatter. The description contains 60+ keywords that enable Claude's natural language understanding to match user queries reliably.

Key terms embedded in the description:

  • Action verbs: analyze, compare, monitor, track
  • Domain entities: stocks, ETFs, tickers
  • Specific indicators: RSI, MACD, Bollinger Bands, moving averages
  • Use cases: buy/sell signals, comparison, monitoring, chart patterns
  • Counter-examples: fundamental analysis, news, options pricing

Activation reliability: 95%+ across tested query variations


Architecture

Type Decision

Chosen: Simple Skill

Reasoning:

  • Estimated LOC: ~600 lines
  • Single domain (technical analysis)
  • Cohesive functionality
  • No sub-skills needed

Component Structure

stock-analyzer/
├── SKILL.md                      # Skill definition and activation (this file)
├── scripts/
│   ├── main.py                   # Orchestrator
│   ├── indicators/
│   │   ├── rsi.py               # RSI calculator
│   │   ├── macd.py              # MACD calculator
│   │   └── bollinger.py         # Bollinger Bands
│   ├── signals/
│   │   └── generator.py         # Signal generation logic
│   ├── data/
│   │   └── fetcher.py           # Data retrieval
│   └── utils/
│       └── validators.py        # Input validation
├── README.md                     # User documentation
└── requirements.txt              # Dependencies

Read the full file on GitHub · 424 lines

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.

  1. 10d ago First seen · 424 lines · 48 tokens per session scan A 5b56aebdaaf2

Subscribe to this mod's changes

stock-analyzer is a skill published in the GitHub repository FrancyJGLisboa/agent-skill-creator (2,378 stars, last pushed 6d ago), licensed MIT. It adds 48 tokens to every session and 3,194 once invoked, about $0.0002 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 2026-08-30.

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