Agent skill

Indicator Catalog

by facioquo in facioquo/stock-indicators-dotnet

Apache-2.0Auto-check passedBusiness, Finance & HR

Install Indicator Catalog

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a claude-code

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

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog --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/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/indicator-catalog .claude/skills/indicator-catalog && 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/

Paste into Claude Code

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .claude/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/indicator-catalog .agents/skills/indicator-catalog && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .agents/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/indicator-catalog .cursor/skills/indicator-catalog && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .cursor/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/facioquo/stock-indicators-dotnet.git --path .agents/skills/indicator-catalog

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/indicator-catalog .gemini/skills/indicator-catalog && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .gemini/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/indicator-catalog .github/skills/indicator-catalog && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .github/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-catalog --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/facioquo/stock-indicators-dotnet.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/indicator-catalog .opencode/skills/indicator-catalog && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "indicator-catalog" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-catalog into .opencode/skills/indicator-catalog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-catalog", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: indicator-catalog
GitHub stars: 1.2k
Token cost: ~1.6k tokens
SKILL.md length: 591 words
Files: 1
Skills in repo: 10
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Editing a src/Indicators//{Name}.Catalog.cs file
SKILL.md covers Listing file, Parameters, Results and Registration and shape snapshot, plus 2 more sections
Calls dotnet
Renaming an indicator parameter

What it does

Indicator Catalog is an agent skill from facioquo/stock-indicators-dotnet. Write {Name}.Catalog.cs listings with CatalogListingBuilder — parameters, results, chart panes, isRequired and isReusable rules — register them in Catalog.Listings.cs, refresh the catalog shape snapshot, and write {Name}CatalogTests. Use when creating or editing a src/Indicators//{Name}.Catalog.cs file, adding or renaming an indicator parameter or result property, editing src/Common/Catalog/Catalog.Listings.cs, or when a test under tests/Library/Common/Catalog/ fails.

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Business, Finance & HR, covering Trading and backtesting. The repository describes itself as: Stock Indicators for .NET is a C NuGet package that transforms raw equity, commodity, forex, or cryptocurrency financial market price quotes into technical indicators and trading… The licence is Apache-2.0.

When your agent uses it

Editing a src/Indicators//{Name}.Catalog.cs file
Renaming an indicator parameter
Result property
Editing src/Common/Catalog/Catalog.Listings.cs

Example prompts

“/indicator-catalog”

What it can do on your machine

Read from SKILL.md and the folder at commit e439ae4. 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
Shell commands in SKILL.md call:
- dotnet
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

Indicator Catalog loads about 1.6k tokens when it runs. Until then it costs about 128 tokens; SKILL.md has 591 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~128
When it runs · the whole SKILL.md, loaded when a task matches: ~1.6k

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 facioquo/stock-indicators-dotnet at commit e439ae4, republished under its Apache-2.0 licence (© facioquo). 591 words, ~1,624 tokens.

Download SKILL.mdSave it as .claude/skills/indicator-catalog/SKILL.md (or your agent's skills folder).

name: indicator-catalog
description: Write `{Name}.Catalog.cs` listings with `CatalogListingBuilder` — parameters, results, chart panes, `isRequired` and `isReusable` rules — register them in `Catalog.Listings.cs`, refresh the catalog shape snapshot, and write `{Name}CatalogTests`. Use when creating or editing a `src/Indicators/**/{Name}.Catalog.cs` file, adding or renaming an indicator parameter or result property, editing `src/Common/Catalog/Catalog.Listings.cs`, or when a test under `tests/Library/Common/Catalog/` fails.

Indicator catalog development

The catalog drives automated execution, code generation, and charting, so every listing must bind to a real method, parameter, and result property. The tests in tests/Library/Common/Catalog/ enforce most rules below across every listing.

Listing file

src/Indicators/{folder}/{Name}/{Name}.Catalog.cs declares one CommonListing and one listing per supported style. src/Indicators/e-j/Ema/Ema.Catalog.cs is the reference:

csharp

public static partial class Ema
{
    internal static readonly IndicatorListing CommonListing =
        new CatalogListingBuilder()
            .WithName("Exponential Moving Average")
            .WithId("EMA")
            .WithCategory(Category.MovingAverage)
            .AddParameter<int>("lookbackPeriods", "Lookback Period", description: "Number of periods for the EMA calculation", isRequired: true, defaultValue: 20, minimum: 2, maximum: 250)
            .AddResult(nameof(EmaResult.Ema), "EMA", IndicatorResult.PricePane, ResultType.Default, isReusable: true)
            .Build();

    internal static readonly IndicatorListing SeriesListing =
        new CatalogListingBuilder(CommonListing)
            .WithStyle(Style.Series)
            .WithMethodName("ToEma")
            .Build();

    // BufferListing: Style.Buffer + "ToEmaList"; StreamListing: Style.Stream + "ToEmaHub"
}

Set .WithMethodName() only on style listings: To{Name} for Series, To{Name}List for Buffer, To{Name}Hub for Stream.
Build() derives ResultRecordType from the method name, so a method of the wrong style reports the wrong result shape.
WithId sets the UIID that names the regression baseline file ({uiid-lowercase}.standard.json) and the Catalog.Get(id, style) lookup.
Pick the Category an existing peer uses; MACD, Ichimoku, and Pivot Points are PriceTrend, and Beta and ATR are PriceCharacteristic.

Parameters

Builder method	Parameter type
`AddParameter<T>()`	`int`, `double`, `decimal`, and other primitive values; always pass `minimum` and `maximum`
`AddEnumParameter<T>()`	Enums
`AddDateParameter()`	`DateTime`
`AddSeriesParameter()`	An `IReadOnlyList<IReusable>` input, such as the comparison series of Beta, Correlation, and PRS

parameterName matches the method's parameter name exactly; a mismatch makes a catalog-bound caller silently receive the default instead of the supplied value.
Declare parameters as an unbroken run in signature order. ListingExecutor binds them positionally and picks an overload by argument count.
Set isRequired: false exactly when the C# signature gives the parameter a default, and set defaultValue equal to that C# default.
When omitting the argument instead selects a shorter overload, use isRequired: false only if the listing declares no defaultValue (VWAP startDate). If the shorter overload behaves differently from the advertised default (ToPrs(sourceEval, sourceBase) computes no PrsPercent), use isRequired: true; callers reach the shorter form with WithoutParam(name) at execution time.

Results

AddResult(dataName, displayName, chartPane, dataType, isReusable):

dataName is nameof(TResult.Property), never a string literal, so a renamed property fails the build. displayName is a literal human label.
chartPane is IndicatorResult.PricePane for a value at price level, a shared pane name (conventionally the indicator name, such as "Macd") for results with common non-price units, and null for a non-numeric result such as a pattern match.
isReusable: true marks exactly one result on an IReusable model, the property that Value returns. An ISeries model marks none. Build() throws when more than one is marked.
ResultType sets the chart form: Default, Centerline, Channel, Bar, BarStacked, or Point.

Show full SKILL.md (218 more words)Show less

Registration and shape snapshot

Register each listing inside PopulateCatalog() in src/Common/Catalog/Catalog.Listings.cs. Blocks sort alphabetically by indicator ID, are separated by a blank line, and open with a // {ID} ({Full Name}) comment, or // {Full Name} when no abbreviation is conventional. Within a block the order is Buffer, Series, Stream:

csharp

// EMA (Exponential Moving Average)
_listings.Add(Ema.BufferListing);
_listings.Add(Ema.SeriesListing);
_listings.Add(Ema.StreamListing);

// Beta
_listings.Add(Beta.SeriesListing);

Adding or changing a parameter or result changes tests/Library/TestData/catalog/shape.snapshot.txt. Regenerate it, review the diff, then rerun the test without the variable to confirm it passes; the regeneration run reports Inconclusive:

bash

UPDATE_CATALOG_SHAPE=1 dotnet test tests/Library/Tests.Indicators.csproj --filter CatalogShapeMatchesSnapshot

Tests

tests/Library/Indicators/{folder}/{Name}/{Name}CatalogTests.cs declares public class {Name}CatalogTests : TestBase in namespace Catalogging, with one {Name}{Style}_InCatalog_ReturnsAllVariants() method per style asserting Name, Uiid, Style, Category, MethodName, and the parameter and result counts. tests/Library/Indicators/t-z/Wma/WmaCatalogTests.cs is a minimal example.

The catalog-wide tests verify method binding per style, dataName and parameterName resolution, parameter order, isRequired and default agreement with the C# signature, chart panes, and the shape snapshot. They do not check names, categories, or value ranges, so keep the per-indicator test.

Do not do these

Do not call .WithMethodName() on CommonListing.
Do not write a dataName as a string literal where nameof can reach the member.
Do not mark isReusable: true on an ISeries model or on more than one result.
Do not set isRequired: false with a defaultValue the C# signature does not apply when the argument is omitted.
Do not hand-edit shape.snapshot.txt; regenerate it.

Files

Just SKILL.md in .agents/skills/indicator-catalog of facioquo/stock-indicators-dotnet.

Open the folder on GitHubat commit e439ae4

Compare with similar skills

Indicator Catalog 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.

Indicator Catalog compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Indicator Catalog this skillfacioquo/stock-indicators-dotnet	1.2k	—	~1.6k	Automated safety check: Pass	Apache-2.0	today
Tushare Datazillionare/zillionare	319	2 repos	~2.3k	Automated safety check: Pass	None	today
Tradingview MCPatilaahmettaner/tradingview-mcp	5k	—	~1.3k	Automated safety check: Pass	MIT	today
Digital Oraclekomako-workshop/digital-oracle	870	—	~5.9k	Automated safety check: Pass	MIT	2 mo ago
Fintoolsecond-state/fintool	316	1 repos	~5.9k	Automated safety check: Pass	None	4 mo ago
Polyclawchainstacklabs/polyclaw	360	1 repos	~2k	Automated safety check: Pass	Apache-2.0	5 mo ago

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More from facioquo/stock-indicators-dotnet

All 10 skills in this repo

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Indicator Stream
facioquo/stock-indicators-dotnet
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Questions about Indicator Catalog

What does Indicator Catalog do?

Write {Name}.Catalog.cs listings with CatalogListingBuilder — parameters, results, chart panes, isRequired and isReusable rules — register them in Catalog.Listings.cs, refresh the catalog shape…. Indicator Catalog is an agent skill from facioquo/stock-indicators-dotnet.cs, refresh the catalog shape snapshot, and write {Name}CatalogTests.

When should I use Indicator Catalog?

Indicator Catalog fits situations like: editing a src/Indicators//{Name}.Catalog.cs file; renaming an indicator parameter; result property; editing src/Common/Catalog/Catalog.Listings.cs.

How do I install Indicator Catalog in Claude Code?

Run `npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a claude-code`. Or copy the skill folder (.agents/skills/indicator-catalog in facioquo/stock-indicators-dotnet) into .claude/skills/indicator-catalog in your project. Claude Code loads it when a task matches its description.

How do I install Indicator Catalog in Codex?

Run `npx skills add facioquo/stock-indicators-dotnet --skill indicator-catalog -a codex`. Or copy the skill folder (.agents/skills/indicator-catalog in facioquo/stock-indicators-dotnet) into .agents/skills/indicator-catalog in your project. Codex loads it when a task matches its description.

Can I use Indicator Catalog 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 facioquo/stock-indicators-dotnet --skill indicator-catalog -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/indicator-catalog, .gemini/skills/indicator-catalog, .github/skills/indicator-catalog and .opencode/skills/indicator-catalog in your project.

What does Indicator Catalog need to run?

Going by SKILL.md and its folder, Indicator Catalog needs the command-line tools its instructions call (dotnet).

Does Indicator Catalog 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 Indicator Catalog 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 Indicator Catalog use?

Indicator Catalog is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Indicator Catalog use?

About 1.6k tokens (SKILL.md is roughly 6.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Indicator Catalog?

Skills that share tags, products or a category with Indicator Catalog: Tushare Data (zillionare/zillionare, 319 stars), Tradingview MCP (atilaahmettaner/tradingview-mcp, 5k stars), Digital Oracle (komako-workshop/digital-oracle, 870 stars) and Fintool (second-state/fintool, 316 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Indicator Catalog?

facioquo (a GitHub organization) maintains it in facioquo/stock-indicators-dotnet, which has 1,247 GitHub stars. The repository holds 10 skills in this directory. The repository was last updated on October 7, 2026.

Source: facioquo/stock-indicators-dotnet on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Indicator Catalog

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Indicator catalog development

Listing file

Parameters

Results

Registration and shape snapshot

Tests

Do not do these

Files

Compare with similar skills

Similar skills

More from facioquo/stock-indicators-dotnet

Related

Questions about Indicator Catalog