Agent skill

Stock Price Change

by OctagonAI in OctagonAI/skills

Retrieve stock price change statistics across multiple time periods using Octagon MCP.

MITAuto-check passedData & Analytics

Install Stock Price Change

skills CLI
$ npx skills add OctagonAI/skills --skill stock-price-change -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install OctagonAI/skills stock-price-change --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/OctagonAI/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/stock-price-change .claude/skills/stock-price-change && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
stock-price-change
GitHub stars
127
Token cost
~1.7k tokens
SKILL.md length
592 words
Files
5 (incl. references)
Skills in repo
53
Repo updated
First seen
Licence
MIT

At a glance

Retrieve stock price change statistics across multiple time periods using Octagon MCP.

  • Works in 4 steps: Identify the Stock → Execute Query via Octagon MCP → Expected Output → …
  • Analyzing short-term and long-term returns
  • SKILL.md covers Prerequisites, Workflow, Example Queries and Understanding Time Periods, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Stock Price Change is an agent skill from OctagonAI/skills. Retrieve stock price change statistics across multiple time periods using Octagon MCP. Use when analyzing short-term and long-term returns, comparing performance across timeframes, and evaluating momentum and historical growth.

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `README.md`, `marketplace.json` and `references/interpreting-results.md`).

It sits in Data & Analytics, covering Statistics and MCP servers. It works with Model Context Protocol. The repository describes itself as: A collection of Claude skills for agentic financial research by Octagon. The licence is MIT.

When your agent uses it

  • Analyzing short-term and long-term returns
  • Comparing performance across timeframes
  • Evaluating momentum and historical growth

Example prompts

  • “/stock-price-change”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Identify the Stock
  2. Execute Query via Octagon MCP
  3. Expected Output
  4. Interpret Results

What it can do on your machine

Read from SKILL.md and the folder at commit 51e938c. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are json).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Stock Price Change loads about 1.7k tokens when it runs, and up to ~4.3k if it reads all its reference files. Until then it costs about 62 tokens; SKILL.md has 592 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~1.7k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from OctagonAI/skills at commit 51e938c, republished under its MIT licence (© OctagonAI). 592 words, ~1,729 tokens.

Download SKILL.mdSave it as .claude/skills/stock-price-change/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
stock-price-change
description
Retrieve stock price change statistics across multiple time periods using Octagon MCP. Use when analyzing short-term and long-term returns, comparing performance across timeframes, and evaluating momentum and historical growth.

Stock Price Change

Retrieve comprehensive price change statistics across multiple time periods using the Octagon MCP server.

Prerequisites

Ensure Octagon MCP is configured in your AI agent (Cursor, Claude Desktop, Windsurf, etc.). See references/mcp-setup.md for installation instructions.

Workflow

1. Identify the Stock

Determine the ticker symbol for the company you want to analyze (e.g., AAPL, MSFT, GOOGL).

2. Execute Query via Octagon MCP

Use the octagon-agent tool with a natural language prompt:

Get stock price change statistics for the symbol <TICKER>.

MCP Call Format:

json
{
  "server": "octagon-mcp",
  "toolName": "octagon-agent",
  "arguments": {
    "prompt": "Get stock price change statistics for the symbol AAPL."
  }
}
3. Expected Output

The agent returns price change data across multiple timeframes:

Time PeriodPercentage Change
1 Day4.06%
5 Days4.80%
1 Month-0.37%
3 Months-0.13%
6 Months33.42%
Year-to-Date (YTD)-0.37%
1 Year18.42%
3 Years79.03%
5 Years100.02%
10 Years1,043.14%
All-Time High210,270.08%

Key Insight: Strong long-term growth with 10-year return of 1,043.14%, but recent short-term performance slightly negative.

Data Sources: octagon-stock-data-agent

4. Interpret Results

See references/interpreting-results.md for guidance on:

  • Evaluating short-term vs. long-term performance
  • Understanding momentum signals
  • Comparing to benchmarks
  • Assessing trend consistency

Example Queries

Basic Query:

Get stock price change statistics for the symbol AAPL.

Multiple Stocks:

Compare price change statistics for AAPL, MSFT, and GOOGL.

Specific Focus:

What is the 1-year and 5-year return for TSLA?

YTD Performance:

What is the year-to-date performance of NVDA?

Long-Term Growth:

What is the 10-year cumulative return for AMZN?

Understanding Time Periods

Short-Term Periods
PeriodUse Case
1 DayDaily momentum
5 DaysWeekly trend
1 MonthRecent performance
3 MonthsQuarterly trend
Medium-Term Periods
PeriodUse Case
6 MonthsHalf-year momentum
YTDCalendar year performance
1 YearAnnual return
Long-Term Periods
PeriodUse Case
3 YearsBusiness cycle
5 YearsMarket cycle
10 YearsSecular trend
All-TimeTotal return since inception

Return Interpretation

Performance Classification
Return (1 Year)Classification
>50%Exceptional
25-50%Very strong
10-25%Strong
0-10%Moderate
-10 to 0%Weak
<-10%Poor
Long-Term Standards
Return (10 Year)Classification
>500%Exceptional
200-500%Very strong
100-200%Strong
50-100%Moderate
0-50%Below average
<0%Poor

Momentum Analysis

Trend Consistency
PatternInterpretation
All periods positiveStrong consistent uptrend
Short negative, long positivePullback in uptrend
Short positive, long negativeBounce in downtrend
All periods negativeConsistent downtrend
Momentum Signals
SignalPattern
AcceleratingReturns increasing across periods
DeceleratingReturns decreasing across periods
StableConsistent returns across periods
ReversalSign change between periods
Example Analysis

From AAPL data:

  • 1 Day: +4.06% (strong daily)
  • 1 Month: -0.37% (slight pullback)
  • 1 Year: +18.42% (solid annual)
  • 10 Year: +1,043.14% (exceptional long-term)

Interpretation: Long-term compounder with recent consolidation.

Show full SKILL.md (223 more words)Show less

Annualized Returns

Calculation
Annualized Return = (1 + Total Return)^(1/Years) - 1
Example

From AAPL data:

  • 10-Year Return: 1,043.14%
  • Annualized: (1 + 10.4314)^(1/10) - 1 = 27.3% per year
Annualized Benchmarks
Annual ReturnRating
>25%Exceptional
15-25%Very strong
10-15%Strong
7-10%Market-like
<7%Below market

Comparison Analysis

vs. Benchmarks
BenchmarkWhat to Compare
S&P 500Market performance
Sector ETFIndustry performance
PeersCompetitive position
Alpha Calculation
Alpha = Stock Return - Benchmark Return
Example

If AAPL 1-year return is +18.42% and S&P 500 is +10%:

  • Alpha: +8.42% outperformance

Time Period Relationships

Healthy Patterns
PatternInterpretation
Long > ShortHealthy uptrend
Positive all periodsConsistent strength
Improving short-termMomentum building
Warning Patterns
PatternInterpretation
Long << ShortMean reversion risk
Long > 0, Short < 0Trend weakening
All negativeFundamental issues

All-Time High Analysis

Distance from ATH
Distance = (ATH - Current) / ATH × 100%
ATH Context
PositionInterpretation
At ATHMaximum strength
0-10% belowNear highs
10-20% belowCorrection
20-40% belowBear market
>40% belowSevere decline

Common Use Cases

Performance Summary
What are the returns for AAPL across all time periods?
Trend Analysis
Is MSFT in an uptrend or downtrend based on recent returns?
Long-Term Growth
What is the 10-year cumulative return for the FAANG stocks?
Momentum Check
Is NVDA showing positive momentum in the short-term?
Comparison
Compare 1-year returns for major tech stocks.

Analysis Tips

  1. Don't rely on one period: Use multiple timeframes.

  2. Compare to benchmarks: Returns mean more in context.

  3. Consider consistency: Smooth vs. volatile returns.

  4. Annualize long-term: For fair comparison.

  5. Watch for divergence: Short vs. long-term signals.

  6. Factor in dividends: Total return vs. price return.

Integration with Other Skills

SkillCombined Use
stock-quoteCurrent price context
stock-performanceDaily price data
stock-historical-indexvs. market returns
financial-metrics-analysisFundamentals behind returns

© OctagonAI, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (references) in skills/stock-price-change of OctagonAI/skills.

  • SKILL.md
  • README.md
  • marketplace.json
  • references/interpreting-results.md
  • references/mcp-setup.md

Open the folder on GitHubat commit 51e938c

Compare with similar skills

Stock Price Change next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Stock Price Change compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Stock Price Change this skillOctagonAI/skills127—~1.7kAutomated safety check: PassMIT
Verified Researchsweetcornna/free-search-mcp126—~1.8kAutomated safety check: PassMIT
Find Hypertable Candidatestimescale/pg-aiguide1.9k1 repos~2.6kAutomated safety check: PassApache-2.0
Openbb Data Fetchermonarchjuno/vibe-investing299—~2.9kAutomated safety check: NotesMIT
Odoo Data Quality Gateerpipe-org/mcp-odoo421—~765Automated safety check: PassMIT
Prod TelemetryUsefulSoftwareCo/executor4.1k—~1.9kAutomated safety check: PassMIT

Similar skills

  • Verified Research

    sweetcornna/free-search-mcp

    Use with the free-search MCP tools whenever a web lookup must yield facts someone will rely on: dates, deadlines, prices, prizes, fees, rules, eligibility, schedules, versions, statistics, news, or…

    126 GitHub stars~1.8k tokensUpdated 6 days ago
    Agent WorkflowsAuto-check passed
  • Find Hypertable Candidates

    timescale/pg-aiguide

    A skill your agent uses to analyze an existing PostgreSQL database and identify which tables should be converted to Timescale/TimescaleDB hypertables.

    1.9k GitHub starsUsed in 1 repo~2.6k tokens
    Data & AnalyticsAuto-check passed
  • Openbb Data Fetcher

    monarchjuno/vibe-investing

    Fetch financial, market, economic, fundamental, news, options, crypto, ETF, index, and macro data through the OpenBB Python interface instead of the OpenBB MCP server.

    299 GitHub stars~2.9k tokensUpdated 5 mo ago
    Data & AnalyticsAuto-check: notes
  • Odoo Data Quality Gate

    erpipe-org/mcp-odoo

    Audit an Odoo database's data quality with evidence before trusting AI answers, importing, or migrating — duplicates, missing required values, orphaned references, format anomalies — and drive…

    421 GitHub stars~765 tokensUpdated 1 mo ago
    Data & AnalyticsAuto-check passed
  • Prod Telemetry

    UsefulSoftwareCo/executor

    Query Executor's production telemetry — Axiom traces (executor-cloud dataset), prod Postgres via PlanetScale, PostHog product analytics — through the Executor MCP.

    4.1k GitHub stars~1.9k tokensUpdated today
    Data & AnalyticsAuto-check passed
  • Sub2sub

    mekoand/sub2sub

    Review first-use settings, check or install updates, open local management, troubleshoot and report problems, query task statistics or quota, share a node, connect with an invitation, delegate or…

    114 GitHub stars~5.1k tokensUpdated yesterday
    Data & AnalyticsAuto-check passed

More from OctagonAI/skills

All 53 skills in this repo
  • Analyst Estimates

    OctagonAI/skills

    Retrieve analyst financial estimates including Revenue and EPS projections with low/high ranges and analyst coverage.

    127 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed
  • Balance Sheet

    OctagonAI/skills

    Retrieve detailed balance sheet statement data including Total Assets, Current Assets, Non-Current Assets, Liabilities, Equity, and Net Debt for public companies.

    127 GitHub stars~1k tokensUpdated 4 mo ago
    Auto-check passed
  • Balance Sheet Growth

    OctagonAI/skills

    Retrieve year-over-year growth in balance sheet items including Total Assets, Total Liabilities, Shareholders Equity, Cash, and Inventories.

    127 GitHub stars~940 tokensUpdated 4 mo ago
    Auto-check passed
  • Batch Market Cap

    OctagonAI/skills

    Retrieve market capitalization data for multiple companies at once using Octagon MCP.

    127 GitHub stars~1.6k tokensUpdated 4 mo ago
    Auto-check passed
  • Cash Flow Growth

    OctagonAI/skills

    Retrieve year-over-year growth in cash flow metrics including Operating Cash Flow, Free Cash Flow, and Net Cash Flow.

    127 GitHub stars~862 tokensUpdated 4 mo ago
    Auto-check passed
  • Cash Flow Statement

    OctagonAI/skills

    Retrieve real-time or historical cash flow statement data including Net Income, Operating Cash Flow, Investing Cash Flow, Financing Cash Flow, Free Cash Flow, and Cash Position for public companies.

    127 GitHub stars~1k tokensUpdated 4 mo ago
    Auto-check passed

Questions about Stock Price Change

What does Stock Price Change do?

Retrieve stock price change statistics across multiple time periods using Octagon MCP. Stock Price Change is an agent skill from OctagonAI/skills. Retrieve stock price change statistics across multiple time periods using Octagon MCP.

When should I use Stock Price Change?

Stock Price Change fits situations like: analyzing short-term and long-term returns; comparing performance across timeframes; evaluating momentum and historical growth.

How do I install Stock Price Change in Claude Code?

Run `npx skills add OctagonAI/skills --skill stock-price-change -a claude-code`. Or copy the skill folder (skills/stock-price-change in OctagonAI/skills) into .claude/skills/stock-price-change in your project. Claude Code loads it when a task matches its description.

How do I install Stock Price Change in Codex?

Run `npx skills add OctagonAI/skills --skill stock-price-change -a codex`. Or copy the skill folder (skills/stock-price-change in OctagonAI/skills) into .agents/skills/stock-price-change in your project. Codex loads it when a task matches its description.

Can I use Stock Price Change in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add OctagonAI/skills --skill stock-price-change -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/stock-price-change, .gemini/skills/stock-price-change, .github/skills/stock-price-change and .opencode/skills/stock-price-change in your project.

What does Stock Price Change need to run?

SKILL.md names no scripts, command-line tools or credentials: Stock Price Change is instructions for the agent only.

Does Stock Price Change access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Stock Price Change safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Stock Price Change use?

Stock Price Change is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Stock Price Change use?

About 1.7k tokens (SKILL.md is roughly 6.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.6k tokens, read only when the agent opens those files.

What are the alternatives to Stock Price Change?

Skills that share tags, products or a category with Stock Price Change: Verified Research (sweetcornna/free-search-mcp, 126 stars), Find Hypertable Candidates (timescale/pg-aiguide, 1.9k stars), Openbb Data Fetcher (monarchjuno/vibe-investing, 299 stars) and Odoo Data Quality Gate (erpipe-org/mcp-odoo, 421 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Stock Price Change?

OctagonAI (a GitHub organization) maintains it in OctagonAI/skills, which has 127 GitHub stars. The repository holds 53 skills in this directory. The repository was last updated on June 5, 2026.

Source: OctagonAI/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.