Write Coding Standards From File
GitHubOfficialOriginally contributed by @jhauga as prompts/write-coding-standards-from-file.prompt.md; moved into a skill by pull request #761Distributed by GitHub
- Skill
- Content generator
- Software development
- MIT
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AutoGineer summary
Written by AutoGineer from the skill’s own files, not by the author
This skill automates the creation of a coding standards and style guide document. By analyzing the syntax, indentation, naming conventions, and structural patterns within provided source files or directories, it generates a comprehensive guide tailored to the project's existing style. It supports various configuration options, including the ability to automatically detect and fix inconsistencies, integrate with existing README files, and incorporate industry-standard style guides for specific programming languages.
What it does
- Analyzes source code files to extract existing syntax, naming, and formatting patterns.
- Generates a structured coding standards document based on detected styles or predefined templates.
- Identifies and optionally fixes syntax inconsistencies across the codebase.
- Integrates generated standards directly into a project's README file.
- Fetches and incorporates external industry-standard style guides for specific languages.
- Creates a test file to verify adherence to the newly established coding standards.
When to use it
- When starting a new project and wanting to formalize coding conventions based on initial code.
- When onboarding new team members and needing a clear reference for project style.
- When cleaning up a codebase with inconsistent formatting and naming conventions.
- When you need to generate a contribution guide or style manual quickly.
Advantages
- Ensures consistency by deriving standards directly from existing project code.
- Reduces manual effort in documenting complex style guidelines.
- Supports automated enforcement through inconsistency detection and fixing.
- Highly configurable output formats and integration points.
Usage examples
- “Generate a coding standards document for the files in the /src folder and save it as CONTRIBUTING.md.”
- The agent analyzes the code in /src, identifies the prevailing style, and creates a new CONTRIBUTING.md file containing the project's coding standards.
- “Analyze main.py and fix any indentation or naming inconsistencies found.”
- The agent evaluates main.py, identifies deviations from the majority syntax, and applies fixes to align the code with the project's detected standards.
Install
Download the skill as a ZIP:
https://autogineer.com/agent-skills/github/write-coding-standards-from-file/downloadUnzip it into the cross-client skills folder of your project:
mkdir -p .agents/skills && unzip write-coding-standards-from-file.zip -d .agents/skills
Documentation by jhauga
Write Coding Standards From File
Use the existing syntax of the file(s) to establish the standards and style guides for the project. If more than one file or a folder is passed, loop through each file or files in the folder, appending the file's data to temporary memory or a file, then when complete use temporary data as a single instance; as if it were the file name to base the standards and style guideline on.
Rules and Configuration
Below is a set of quasi-configuration boolean and string[] variables. Conditions for handling true, or other values for each variable are under the level two heading ## Variable and Parameter Configuration Conditions.
Parameters for the prompt have a text definition. There is one required parameter ${fileName}, and several optional parameters ${folderName}, ${instructions}, and any [configVariableAsParameter].
Configuration Variables
addStandardsTest = false;
addToREADME = false;
addToREADMEInsertions = ["atBegin", "middle", "beforeEnd", "bestFitUsingContext"];
Default to beforeEnd.
createNewFile = true;
fetchStyleURL = true;
findInconsistencies = true;
fixInconsistencies = true;
newFileName = ["CONTRIBUTING.md", "STYLE.md", "CODE_OF_CONDUCT.md", "CODING_STANDARDS.md", "DEVELOPING.md", "CONTRIBUTION_GUIDE.md", "GUIDELINES.md", "PROJECT_STANDARDS.md", "BEST_PRACTICES.md", "HACKING.md"];
For each file in
${newFileName}, if file does not exist, use that file name andbreak, else continue to next file name of${newFileName}.
outputSpecToPrompt = false;
useTemplate = "verbose"; // or "v"
Possible values are
[["v", "verbose"], ["m", "minimal"], ["b", "best fit"], ["custom"]].Selects one of the two example templates at the bottom of prompt file under the level two heading
## Coding Standards Templates, or use another composition that is a better fit.If custom, then apply per request.
Configuration Variables as Prompt Parameters
If any of the variable names are passed to prompt as-is, or as a similar but clearly related text value, then override the default variable value with the value passed to prompt.
Prompt Parameters
fileName = The name of the file that will be analyzed in terms of: indentation, variable naming, commenting, conditional procedures, functional procedures, and other syntax related data for the coding language of the file.
folderName = The name of the folder that will be used to extract data from multiple files into one aggregated dataset that will be analyzed in terms of: indentation, variable naming, commenting, conditional procedures, functional procedures, and other syntax related data for the coding language of the files.
instructions = Additional instructions, rules, and procedures that will be provided for unique cases.
[configVariableAsParameter] = If passed will override the default state of the configuration variable. Example:
useTemplate = If passed will override the configuration
${useTemplate}default. Values are[["v", "verbose"], ["m", "minimal"], ["b", "best fit"]].
Required and Optional Parameters
fileName - required
folderName - optional
instructions - optional
[configVariableAsParameter] - optional
Variable and Parameter Configuration Conditions
${fileName}.length > 1 || ${folderName} != undefined
If true, toggle
${fixInconsistencies}to false.
${addToREADME} == true
Insert the coding standards into the
README.mdinstead of outputting to the prompt or creating a new file.If true, toggle both
${createNewFile}and${outputSpecToPrompt}to false.
${addToREADMEInsertions} == "atBegin"
If
${addToREADME}is true, then insert the coding standards data at the beginning of theREADME.mdfile after the title.
${addToREADMEInsertions} == "middle"
If
${addToREADME}is true, then insert the coding standards data at the middle of theREADME.mdfile, changing the standards title heading to match that of theREADME.mdcomposition.
${addToREADMEInsertions} == "beforeEnd"
If
${addToREADME}is true, then insert the coding standards data at the end of theREADME.mdfile, inserting a new line after the last character, then inserting the data on a new line.
${addToREADMEInsertions} == "bestFitUsingContext"
If
${addToREADME}is true, then insert the coding standards data at the best fitting line of theREADME.mdfile in regards to the context of theREADME.mdcomposition and flow of data.
${addStandardsTest} == true
Once the coding standards file is complete, write a test file to ensure the file or files passed to it adhere to the coding standards.
${createNewFile} == true
Create a new file using the value, or one of the possible values, from
${newFileName}.If true, toggle both
${outputSpecToPrompt}and${addToREADME}to false.
${fetchStyleURL} == true
Additionally use the data fetched from the links nested under level three heading
### Fetch Linksas context for creating standards, specifications, and styling data for the new file, prompt, orREADME.md.For each relevant item in
### Fetch Links, run#fetch ${item}.
${findInconsistencies} == true
Evaluate syntax related to indentations, line-breaks, comments, conditional and function nesting, quotation wrappers i.e.
'or"for strings, etc., and categorize.For each category, make a count, and if one item does not match the majority of the count, then commit to temporary memory.
Depending on the status of
${fixInconsistencies}, either edit and fix the low count categories to match the majority, or output to prompt inconsistencies stored in temporary memory.
${fixInconsistencies} == true
Edit and fix the low count categories of syntax data to match the majority of corresponding syntax data using inconsistencies stored in temporary memory.
typeof ${newFileName} == "string"
If specifically defined as a
string, create a new file using the value from${newFileName}.
typeof ${newFileName} != "string"
If NOT specifically defined as a
string, but instead anobjector an array, create a new file using a value from${newFileName}by applying this rule:For each file name in
${newFileName}, if file does not exist, use that file name andbreak, else continue to the next.
${outputSpecToPrompt} == true
Output the coding standards to the prompt instead of creating a file or adding to README.
If true, toggle both
${createNewFile}and${addToREADME}to false.
${useTemplate} == "v" || ${useTemplate} == "verbose"
Use data under the level three heading
### "v", "verbose"as guiding template when composing the data for coding standards.
${useTemplate} == "m" || ${useTemplate} == "minimal"
Use data under the level three heading
### "m", "minimal"as guiding template when composing the data for coding standards.
${useTemplate} == "b" || ${useTemplate} == "best"
Use either the data under the level three heading
### "v", "verbose"or### "m", "minimal", depending on the data extracted from${fileName}, and use the best fit as guiding template when composing the data for coding standards.
${useTemplate} == "custom" || ${useTemplate} == "<ANY_NAME>"
Use the custom prompt, instructions, template, or other data passed as guiding template when composing the data for coding standards.
if ${fetchStyleURL} == true
Depending on the programming language, for each link in list below, run #fetch (URL), if programming language is ${fileName} == [<Language> Style Guide].
Fetch Links
Coding Standards Templates
"m", "minimal"
```markdown
## 1. Introduction
* **Purpose:** Briefly explain why the coding standards are being established (e.g., to improve code quality, maintainability, and team collaboration).
* **Scope:** Define which languages, projects, or modules this specification applies to.
## 2. Naming Conventions
* **Variables:** `camelCase`
* **Functions/Methods:** `PascalCase` or `camelCase`.
* **Classes/Structs:** `PascalCase`.
* **Constants:** `UPPER_SNAKE_CASE`.
## 3. Formatting and Style
* **Indentation:** Use 4 spaces per indent (or tabs).
* **Line Length:** Limit lines to a maximum of 80 or 120 characters.
* **Braces:** Use the "K&R" style (opening brace on the same line) or the "Allman" style (opening brace on a new line).
* **Blank Lines:** Specify how many blank lines to use for separating logical blocks of code.
## 4. Commenting
* **Docstrings/Function Comments:** Describe the function's purpose, parameters, and return values.
* **Inline Comments:** Explain complex or non-obvious logic.
* **File Headers:** Specify what information should be included in a file header, such as author, date, and file description.
## 5. Error Handling
* **General:** How to handle and log errors.
* **Specifics:** Which exception types to use, and what information to include in error messages.
## 6. Best Practices and Anti-Patterns
* **General:** List common anti-patterns to avoid (e.g., global variables, magic numbers).
* **Language-specific:** Specific recommendations based on the project's programming language.
## 7. Examples
* Provide a small code example demonstrating the correct application of the rules.
* Provide a small code example of an incorrect implementation and how to fix it.
## 8. Contribution and Enforcement
* Explain how the standards are to be enforced (e.g., via code reviews).
* Provide a guide for contributing to the standards document itself.
```"v", verbose"
```markdown
# Style Guide
This document defines the style and conventions used in this project.
All contributions should follow these rules unless otherwise noted.
## 1. General Code Style
- Favor clarity over brevity.
- Keep functions and methods small and focused.
- Avoid repeating logic; prefer shared helpers/utilities.
- Remove unused variables, imports, code paths, and files.
## 2. Naming Conventions
Use descriptive names. Avoid abbreviations unless well-known.
| Item | Convention | Example |
|-----------------|----------------------|--------------------|
| Variables | `lower_snake_case` | `buffer_size` |
| Functions | `lower_snake_case()` | `read_file()` |
| Constants | `UPPER_SNAKE_CASE` | `MAX_RETRIES` |
| Types/Structs | `PascalCase` | `FileHeader` |
| File Names | `lower_snake_case` | `file_reader.c` |
## 3. Formatting Rules
- Indentation: **4 spaces**
- Line length: **max 100 characters**
- Encoding: **UTF-8**, no BOM
- End files with a newline
### Braces (example in C, adjust for your language)
```c
if (condition) {
do_something();
} else {
do_something_else();
}
```
### Spacing
- One space after keywords: `if (x)`, not `if(x)`
- One blank line between top-level functions
## 4. Comments & Documentation
- Explain *why*, not *what*, unless intent is unclear.
- Keep comments up-to-date as code changes.
- Public functions should include a short description of purpose and parameters.
Recommended tags:
```text
TODO: follow-up work
FIXME: known incorrect behavior
NOTE: non-obvious design decision
```
## 5. Error Handling
- Handle error conditions explicitly.
- Avoid silent failures; either return errors or log them appropriately.
- Clean up resources (files, memory, handles) before returning on failure.
## 6. Commit & Review Practices
### Commits
- One logical change per commit.
- Write clear commit messages:
```text
Short summary (max ~50 chars)
Optional longer explanation of context and rationale.
```
### Reviews
- Keep pull requests reasonably small.
- Be respectful and constructive in review discussions.
- Address requested changes or explain if you disagree.
## 7. Tests
- Write tests for new functionality.
- Tests should be deterministic (no randomness without seeding).
- Prefer readable test cases over complex test abstraction.
## 8. Changes to This Guide
Style evolves.
Propose improvements by opening an issue or sending a patch updating this document.
```Files
- ATTRIBUTION.mdAdded by AutoGineer1.2 KiB
- LICENSELicence file added by AutoGineer1.0 KiB
- SKILL.md15.0 KiB
ATTRIBUTION.md
Attribution
This folder is an unmodified copy of the Agent Skill "write-coding-standards-from-file", distributed by AutoGineer (https://autogineer.com/agent-skills).
Commit: 797337f33f73e35d08d82f840e21c4b8c4932d88
Originally contributed by: @jhauga (https://github.com/jhauga) as prompts/write-coding-standards-from-file.prompt.md (history: https://github.com/github/awesome-copilot/commits/9efb8cd3885ad3a445e11de2b6cc7ab3abcbdef6/prompts/write-coding-standards-from-file.prompt.md); moved into a skill by pull request #761 (https://github.com/github/awesome-copilot/pull/761)
Publisher: GitHub (https://github.com/github)
Licence: MIT License (https://github.com/github/awesome-copilot/blob/797337f33f73e35d08d82f840e21c4b8c4932d88/LICENSE)
Licence evidence: repository licence LICENSE
Retrieved: 2026-11-07
The skill's own files are unmodified copies. AutoGineer is not affiliated with or endorsed by the author or the publisher.
Files added by AutoGineer
ATTRIBUTION.md: this file, written by AutoGineer
LICENSE: copied from LICENSE
Requirements and compatibility
Written for: GitHub Copilot
Works with: Claude Code, Claude apps, OpenAI Codex, GitHub Copilot, Cursor, Gemini CLI, Kiro, OpenCode, Goose, Amp, Roo Code, JetBrains Junie, Factory Droid, Devin (ex-Windsurf), Mistral Vibe, OpenHands, Letta
“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.
Needs: Names Copilot tools, Needs Python, Needs Node.js
Security
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Attribution and licence
- Originally contributed by
@jhaugaas prompts/write-coding-standards-from-file.prompt.mdmoved into a skill by pull request #761
- Publisher
- GitHub (Official)
- Distributed by
- GitHub
- Source
- github/awesome-copilot · skills/write-coding-standards-from-file · commit 797337f
- Licence
- MIT License (redistribution allowed)
- LICENSE (added by AutoGineer from LICENSE)
- ATTRIBUTION.md (written by AutoGineer)
- Synced
- Contributors
- Jrc356, jhauga, krushideep
AutoGineer is not affiliated with or endorsed by jhauga or GitHub.
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