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apm: Instructions file for GitHub Copilot

.github/instructions/linting.instructions.md

apm linting.instructions.md is an instructions file for GitHub Copilot from microsoft/apm. It costs 952 tokens per session, scanned A, a copy of apm copilot-instructions.md, MIT.

A project linting contract that defines the checks code must pass before a push or before claiming that continuous integration (CI) is green.

In plain words
What is it for?
Run the specified Ruff, Pylint, YAML-safety, file-length, path, duplication, and authentication checks locally before pushing or publishing CI status.
Why use it?
It prevents local code from failing the same checks used by CI after a pull request is merged with the current main branch.

Instructions file for GitHub Copilot ✓ vendor

Written for GitHub Copilot: a Copilot instructions file.

This is microsoft/apm's own configuration. It tells GitHub Copilot how to work on apm 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 apm configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is && bash scripts/lint-auth-signals.sh.

not rated 4.1krepo +38 changed 1mo ago A scan 952 tokens copy · 94% MIT
View source ↗ microsoft/apm microsoft.github.io
About the project

APM is a package manager for AI-agent configuration, using a manifest to declare reusable instructions, skills, prompts, agents, hooks, plugins, and MCP components. Development teams use it to reproduce agent setups across projects and control their dependencies through policies and lockfiles, while the catalogue contains many of these agent components.

microsoft/apm · 4,133 stars · on GitHub · microsoft.github.io

Reuse

Borrowing it

Nothing to install: this file belongs to microsoft/apm. 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/microsoft/apm/main/.github/instructions/linting.instructions.md
Clone the repo
git clone --depth 1 https://github.com/microsoft/apm

Made for: GitHub Copilot.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Your own site
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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 952 This file is loaded in full into every session.
When invoked 952 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 94% copy Near-identical to another mod 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 $0.00952 $0.00952
Opus 5.5 $0.00381 $0.00381
Sonnet 5.5 $0.00190 $0.00190
Haiku 4.5 $0.00095 $0.00095

Measured 1mo ago against content hash 7ae1682c738e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

apm linting.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 1mo 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.

Origin

This is a copy

94% identical to apm copilot-instructions.md — 25 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.github/instructions/linting.instructions.md · 78 lines

How it starts

The opening of the file, as written. The whole thing — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Linting (canonical contract)

The CI Lint job is a hard gate. Mirror it locally before git push and before producing any artifact (PR body, release note, audit report) that claims CI is green.

CI-mirror commands

The Lint job runs (see .github/workflows/ci.yml):

  1. uv run --extra dev ruff check src/ tests/ \ scripts/lint_architecture_boundaries.py scripts/architecture_linter/
  2. uv run --extra dev ruff format --check src/ tests/ \ scripts/lint_architecture_boundaries.py scripts/architecture_linter/
  3. YAML I/O safety guard (rejects raw yaml.dump(..., handle) outside utils/yaml_io.py; mark approved exceptions with # yaml-io-exempt).
  4. File length guardrail (no covered Python file may exceed 2100 lines).
  5. No raw str(path.relative_to(...)) patterns -- use portable_relpath() from apm_cli.utils.paths.
  6. Code duplication guardrail (pylint R0801): uv run --extra dev python -m pylint --disable=all --enable=R0801 \ --min-similarity-lines=10 --fail-on=R0801 src/apm_cli/ \ scripts/lint_architecture_boundaries.py scripts/architecture_linter/
  7. Auth-protocol boundary check: bash scripts/lint-auth-signals.sh

All seven must succeed. CI evaluates these on the PR merge commit (HEAD merged with current main), so duplication introduced by a recent main commit can fail your PR even if your own diff is clean. Always merge main locally before running the mirror.

Local workflow

  • Auto-fix style+imports: uv run --extra dev ruff check src/ tests/ \ scripts/lint_architecture_boundaries.py scripts/architecture_linter/ --fix
  • Apply formatter: uv run --extra dev ruff format src/ tests/ \ scripts/lint_architecture_boundaries.py scripts/architecture_linter/
  • Verify the full Lint job (must all be silent / exit 0): 
    uv run --extra dev ruff check src/ tests/ \
     scripts/lint_architecture_boundaries.py scripts/architecture_linter/ \
  && uv run --extra dev ruff format --check src/ tests/ \
     scripts/lint_architecture_boundaries.py scripts/architecture_linter/ \
  && uv run --extra dev python -m pylint --disable=all --enable=R0801 \
     --min-similarity-lines=10 --fail-on=R0801 src/apm_cli/ \
     scripts/lint_architecture_boundaries.py scripts/architecture_linter/ \
  && bash scripts/lint-auth-signals.sh
    (The YAML, file-length, and relative_to guards are pure-grep one-liners from ci.yml; run them directly if you have touched those surfaces.)

Read the full file on GitHub · 78 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. 1mo ago Changed · +8 lines · +126 tokens per session 7ae1682c738e
  2. 1mo ago First seen · 70 lines · 826 tokens per session scan A 8d31137f1884

Subscribe to this mod's changes

apm linting.instructions.md is an instructions file published in the GitHub repository microsoft/apm (4,133 stars, last pushed yesterday), licensed MIT. It adds 952 tokens to every session, about $0.0038 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to apm copilot-instructions.md, differing in 25 lines, and is treated as a copy.

Claude Codeai-agentscodex-clicontext-engineeringgithub-copilotprompt-engineering
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