Agent skill

Indicator Buffer

by facioquo in facioquo/stock-indicators-dotnet

Apache-2.0Auto-check passedBusiness, Finance & HR

Install Indicator Buffer

skills CLI

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

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

GitHub CLI

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

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-buffer -a codex

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

GitHub CLI

$ gh skill install facioquo/stock-indicators-dotnet indicator-buffer --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-buffer .agents/skills/indicator-buffer && 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-buffer" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-buffer into .agents/skills/indicator-buffer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-buffer", 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-buffer -a cursor

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

GitHub CLI

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

--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-buffer -a gemini-cli

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

GitHub CLI

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

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-buffer -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-buffer .github/skills/indicator-buffer && 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-buffer" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-buffer into .github/skills/indicator-buffer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-buffer", 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-buffer -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-buffer --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-buffer .opencode/skills/indicator-buffer && 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-buffer" agent skill from https://github.com/facioquo/stock-indicators-dotnet/tree/main/.agents/skills/indicator-buffer into .opencode/skills/indicator-buffer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "indicator-buffer", 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-buffer
GitHub stars: 1.2k
Token cost: ~1.1k tokens
SKILL.md length: 385 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}List.cs file
SKILL.md covers Increment interface, Class shape, Buffers and state and Tests, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Its {Name}BufferListTests.cs

What it does

Indicator Buffer is an agent skill from facioquo/stock-indicators-dotnet. Implement BufferList incremental indicators ({Name}List, a BufferList<TResult subclass) — increment interface choice, constructor and To{Name}List() conventions, rolling-buffer helpers, pruning and Clear() state, and the BufferList test interfaces. Use when creating or editing a src/Indicators//{Name}List.cs file or its {Name}BufferListTests.cs, when a BufferList test fails Series parity or pruning, or when a Buffer benchmark shows a list is slow.

Its SKILL.md is about 1.1k 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}List.cs file
Its {Name}BufferListTests.cs
A BufferList test fails Series parity
A Buffer benchmark shows a list is slow

Example prompts

“/indicator-buffer”

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
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
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 Buffer loads about 1.1k tokens when it runs. Until then it costs about 121 tokens; SKILL.md has 385 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~121
When it runs · the whole SKILL.md, loaded when a task matches: ~1.1k

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). 385 words, ~1,113 tokens.

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

name: indicator-buffer
description: Implement BufferList incremental indicators (`{Name}List`, a `BufferList<TResult>` subclass) — increment interface choice, constructor and `To{Name}List()` conventions, rolling-buffer helpers, pruning and `Clear()` state, and the BufferList test interfaces. Use when creating or editing a `src/Indicators/**/{Name}List.cs` file or its `{Name}BufferListTests.cs`, when a BufferList test fails Series parity or pruning, or when a Buffer benchmark shows a list is slow.

BufferList indicator development

A BufferList must produce results identical to the Series output for the same input. The indicator-series skill owns the full per-indicator file set and completion checklist; this skill covers only the {Name}List.cs file and its tests.

Increment interface

Pick the interface from the Series input type. Both are internal and live in src/Common/BufferLists/.

Series input	Interface	`Add` overloads to implement
`IReadOnlyList<IReusable>`	`IIncrementFromChain`	`Add(DateTime timestamp, double value)`, `Add(IReusable value)`, `Add(IReadOnlyList<IReusable> values)`
`IReadOnlyList<IBar>`	`IIncrementFromBar`	`Add(IBar bar)`, `Add(IReadOnlyList<IBar> bars)`

Route every chain overload through Add(DateTime, double) so the calculation exists once.
Pass value.Value from the IReusable overloads, or value.Hl2OrValue() where the Series defaults bars to HL2 (Alligator and Awesome, for example).
An IIncrementFromBar list has no IReusable overloads. It accepts bars and any result that is an IBar (such as HeikinAshiResult, a Bar record), but never an arbitrary IReusable result.

Class shape

src/Indicators/e-j/Ema/EmaList.cs (chain) and src/Indicators/a-b/Adx/AdxList.cs (bar) are the reference implementations.

csharp

public class EmaList : BufferList<EmaResult>, IIncrementFromChain, IEma
{
    private readonly Queue<double> _buffer;

    public EmaList(int lookbackPeriods)
    {
        Ema.Validate(lookbackPeriods);
        LookbackPeriods = lookbackPeriods;
        _buffer = new Queue<double>(lookbackPeriods);
        Name = $"EMA({lookbackPeriods})";
    }

    public EmaList(int lookbackPeriods, IReadOnlyList<IReusable> values)
        : this(lookbackPeriods) => Add(values);
}

public static partial class Ema
{
    public static EmaList ToEmaList(
        this IReadOnlyList<IReusable> source,
        int lookbackPeriods)
        => new(lookbackPeriods) { source };
}

The primary constructor validates with the Series Validate(...), stores parameters as I{Name} properties, allocates buffers, and sets Name.
The chaining constructor takes IReadOnlyList<IReusable> or IReadOnlyList<IBar> to match the interface and delegates with : this(...) => Add(...).
The To{Name}List() extension sits in the same file and uses a collection initializer.
Append results with AddInternal(...), which also enforces MaxListSize; revise an earlier result with UpdateInternal(index, ...).

Show full SKILL.md (173 more words)Show less

Buffers and state

Roll a fixed window with _buffer.Update(capacity, value) from BufferListUtilities.
Use _buffer.UpdateWithDequeue(capacity, value) to maintain a running sum. For a value-type T it returns default(T) (0), not null, when nothing was dequeued, so gate the subtraction on whether the buffer was full before the call.
Override Clear() to call base.Clear() and reset every buffer, running sum, and cached prior value.
When the list keeps history outside a capacity-bounded Queue<T> (a List<T> cache, for example), override PruneList() so that history shrinks with the list.

Tests

{Name}BufferListTests inherits BufferListTestBase and implements ITestChainBufferList for IIncrementFromChain or ITestBarBufferList for IIncrementFromBar, plus ITestCustomBufferListCache for a custom cache. Every test that produces results asserts IsExactly against the Series output. The testing-standards skill lists the required methods.

Do not do these

Do not add Add(IBar) overloads to an IIncrementFromChain list or Add(IReusable) overloads to an IIncrementFromBar list.
Do not reimplement the Series formula differently; reuse its Increment(...) kernel where one exists.
Do not grow an internal collection without bound; every buffer is capacity-limited or pruned with the list.

Files

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

Open the folder on GitHubat commit e439ae4

Compare with similar skills

Indicator Buffer 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 Buffer compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Indicator Buffer this skillfacioquo/stock-indicators-dotnet	1.2k	—	~1.1k	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

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Indicator Series
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Indicator Stream
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Questions about Indicator Buffer

What does Indicator Buffer do?

Implement BufferList incremental indicators ({Name}List, a BufferList<TResult subclass) — increment interface choice, constructor and To{Name}List() conventions, rolling-buffer helpers, pruning and…. Indicator Buffer is an agent skill from facioquo/stock-indicators-dotnet. Implement BufferList incremental indicators ({Name}List, a BufferList<TResult subclass) — increment interface choice, constructor and To{Name}List() conventions, rolling-buffer helpers, pruning and Clear() state, and the BufferList test interfaces.

When should I use Indicator Buffer?

Indicator Buffer fits situations like: editing a src/Indicators//{Name}List.cs file; its {Name}BufferListTests.cs; A BufferList test fails Series parity; A Buffer benchmark shows a list is slow.

How do I install Indicator Buffer in Claude Code?

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

How do I install Indicator Buffer in Codex?

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

Can I use Indicator Buffer 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-buffer -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-buffer, .gemini/skills/indicator-buffer, .github/skills/indicator-buffer and .opencode/skills/indicator-buffer in your project.

What does Indicator Buffer need to run?

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

Does Indicator Buffer 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 Buffer 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 Buffer use?

Indicator Buffer 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 Buffer use?

About 1.1k tokens (SKILL.md is roughly 4.5k 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 Buffer?

Skills that share tags, products or a category with Indicator Buffer: 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 Buffer?

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 Buffer

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

BufferList indicator development

Increment interface

Class shape

Buffers and state

Tests

Do not do these

Files

Compare with similar skills

Similar skills

More from facioquo/stock-indicators-dotnet

Related

Questions about Indicator Buffer