finviz-screener

finviz-screener is a skill for Claude Code from mphinance/alpha-skills. It costs 87 tokens per session (3,950 once invoked), scanned A, a copy of finviz-screener, MIT.

A stock-screening helper that converts plain-language requests into FinViz filters and opens the resulting screener in Chrome. FinViz is a website for filtering stocks by financial and price-related conditions.

In plain words
What is it for?
Use it to find stocks matching criteria such as sector, company size, dividend yield, valuation, growth, insider buying, or technical conditions.
Why use it?
It removes the need to learn FinViz's filter codes or build its URLs manually. It also checks filters before opening them.

Skill for Claude Code

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

Part of the quant-skills plugin — 60 skills shipped together

Good fit Use it to find stocks matching criteria such as sector, company size, dividend yield, valuation, growth, insider buying, or technical conditions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mphinance/alpha-skills/finviz-screener
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 mphinance/alpha-skills --skill finviz-screener
Clone the repo
git clone --depth 1 https://github.com/mphinance/alpha-skills

Made for: Claude Code.

Or install quant-skills, the plugin that ships this one along with the rest of its 60 skills.

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 finviz-screener

README.md
[![agentmods](https://agentmods.dev/badge/skills/mphinance/alpha-skills/finviz-screener/github.svg)](https://agentmods.dev/skills/mphinance/alpha-skills/finviz-screener)
Your own site
<a href="https://agentmods.dev/skills/mphinance/alpha-skills/finviz-screener"><img src="https://agentmods.dev/badge/skills/mphinance/alpha-skills/finviz-screener/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 finviz-screener

Your own site · 80×15
<a href="https://agentmods.dev/skills/mphinance/alpha-skills/finviz-screener"><img src="https://agentmods.dev/badge/skills/mphinance/alpha-skills/finviz-screener.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,950 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 100% copy Near-identical to another mod 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 $0.00087 $0.03950
Opus 5.5 $0.00035 $0.01580
Sonnet 5.5 $0.00017 $0.00790
Haiku 4.5 $0.00009 $0.00395

Measured 1mo ago against content hash 045e5cc06997, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

finviz-screener 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.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/open_finviz_screener.py, scripts/tests/conftest.py, scripts/tests/test_open_finviz_screener.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.

Origin

This is a copy

100% identical to finviz-screener — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

plugins/quant-skills/skills/finviz-screener/SKILL.md · 319 lines

How it starts

The opening of the file, as written. The whole thing — 319 lines — stays where its author put it; the contents beside it link to each section on GitHub.

FinViz Screener

Overview

Translate natural-language stock screening requests into FinViz screener filter codes, build the URL, and open it in Chrome. No API key required for public screener; FINVIZ Elite is auto-detected from $FINVIZ_API_KEY for enhanced functionality.

Key Features:

  • Natural language → filter code mapping (Japanese + English)
  • URL construction with view type and sort order selection
  • Elite/Public auto-detection (environment variable or explicit flag)
  • Chrome-first browser opening with OS-appropriate fallbacks
  • Strict filter validation to prevent URL injection

When to Use This Skill

Explicit Triggers:

  • "高配当で成長している小型株を探したい"
  • "Find oversold large caps near 52-week lows"
  • "テクノロジーセクターの割安株をスクリーニングしたい"
  • "Screen for stocks with insider buying"
  • "FinVizでブレイクアウト候補を表示して"
  • "Show me high-growth small caps on FinViz"
  • "配当利回り5%以上でROE15%以上の銘柄を探して"

Implicit Triggers:

  • User describes stock screening criteria using fundamental or technical terms
  • User mentions FinViz screener or stock filtering
  • User asks to find stocks matching specific financial characteristics

When NOT to Use:

  • Deep fundamental analysis of a specific stock (use us-stock-analysis)
  • Portfolio review with holdings (use portfolio-manager)
  • Chart pattern analysis on images (use technical-analyst)
  • Earnings-based screening (use earnings-trade-analyzer or pead-screener)

Workflow

Step 1: Load Filter Reference

Read the filter knowledge base:

cat references/finviz_screener_filters.md

Step 2: Interpret User Request

Map the user's natural-language request to FinViz filter codes. Use the Common Concept Mapping table below for quick translation, and reference the full filter list for precise code selection.

Note: For range criteria (e.g., "dividend 3-8%", "P/E between 10 and 20"), use the {from}to{to} range syntax as a single filter token (e.g., fa_div_3to8, fa_pe_10to20) instead of combining separate _o and _u filters.

Read the full file on GitHub · 319 lines

Files

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.

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. 1mo ago First seen · 319 lines · 87 tokens per session scan A 045e5cc06997

Subscribe to this mod's changes

finviz-screener is a skill published in the GitHub repository mphinance/alpha-skills (28 stars, last pushed 10d ago), licensed MIT. It adds 87 tokens to every session and 3,950 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to finviz-screener, differing in 0 lines, and is treated as a copy.

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