mcp: Instructions file for GitHub Copilot

.github/instructions/py.instructions.md

mcp py.instructions.md is an instructions file for GitHub Copilot from duplocloud/mcp. It costs 524 tokens per session, scanned A, original, MIT.

A set of rules for writing Python code, including clear names, type hints, documentation, formatting, and error handling.

In plain words
What is it for?
Use it when creating or changing Python functions, classes, algorithms, dependencies, and exception handling.
Why use it?
It gives coding agents consistent standards to follow, making Python code easier to read, maintain, and review.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is duplocloud/mcp's own configuration. It tells GitHub Copilot how to work on mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to duplocloud/mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/duplocloud/mcp/main/.github/instructions/py.instructions.md
Clone the repo
git clone --depth 1 https://github.com/duplocloud/mcp

Made for: GitHub Copilot.

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Per session 524 This file is loaded in full into every session.
When invoked 524 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found 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 $0.00524 $0.00524
Opus 5.5 $0.00210 $0.00210
Sonnet 5.5 $0.00105 $0.00105
Haiku 4.5 $0.00052 $0.00052

Measured 2mo ago against content hash 935696e78dcb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp py.instructions.md 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 2mo ago.

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.

.github/instructions/py.instructions.md · 64 lines

How it starts

The opening of the file, as written. The whole thing — 64 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Python Coding Conventions

Python Instructions

  • Write clear and concise comments for each function using Google Pydoc style.
  • Ensure functions have descriptive names and include type hints.
  • Provide docstrings following PEP 257 conventions.
  • Use the typing module for type annotations (e.g., List[str], Dict[str, int]).
  • Break down complex functions into smaller, more manageable functions.

General Instructions

  • Always prioritize readability and clarity.
  • For algorithm-related code, include explanations of the approach used.
  • Write code with good maintainability practices, including comments on why certain design decisions were made.
  • Handle edge cases and write clear exception handling.
  • For libraries or external dependencies, mention their usage and purpose in comments.
  • Use consistent naming conventions and follow language-specific best practices.
  • Write concise, efficient, and idiomatic code that is also easily understandable.

Code Style and Formatting

  • Follow the PEP 8 style guide for Python.
  • Maintain proper indentation (use 4 spaces for each level of indentation).
  • Ensure lines do not exceed 79 characters.
  • Place function and class docstrings immediately after the def or class keyword.
  • Use blank lines to separate functions, classes, and code blocks where appropriate.
  • Imports always go on top of the file, never just randomly in a function or code block.

Edge Cases and Testing

  • Always include test cases for critical paths of the application.
  • Account for common edge cases like empty inputs, invalid data types, and large datasets.
  • Include comments for edge cases and the expected behavior in those cases.
  • Write unit tests for functions and document them with docstrings explaining the test cases.

Proper Documentation

  • use google style doc guidelines for docstrings
  • do not include types because the function signature already has them
  • include the title on the first line of the docstring after the """
  • one empty line between the title and the description
  • make examples in the docstring if it is intended to be used a lot in different ways

Read the full file on GitHub · 64 lines

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. 2mo ago First seen · 64 lines · 524 tokens per session scan A 935696e78dcb

Subscribe to this mod's changes

mcp py.instructions.md is an instructions file published in the GitHub repository duplocloud/mcp (0 stars, last pushed 7mo ago), licensed MIT. It adds 524 tokens to every session, about $0.0021 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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