skillfoundry: Instructions file for GitHub Copilot

.github/copilot-instructions.md

skillfoundry copilot-instructions.md is an instructions file for GitHub Copilot from samibs/skillfoundry. It costs 1,834 tokens per session, scanned A, original, MIT.

Project-specific instructions for GitHub Copilot that define how an AI coding assistant should behave in the SkillFoundry project, including code quality and security rules.

In plain words
What is it for?
Use them to guide Copilot while implementing, testing, reviewing, and securing code in this project.
Why use it?
They give Copilot consistent project context and prevent it from producing incomplete or unsafe changes.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Claude Code.

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

Reuse

Borrowing it

Nothing to install: this file belongs to samibs/skillfoundry. 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/samibs/skillfoundry/main/.github/copilot-instructions.md
Clone the repo
git clone --depth 1 https://github.com/samibs/skillfoundry

Made for: GitHub Copilot.

Wrote this? Show the measurements

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README.md
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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 1,834 This file is loaded in full into every session.
When invoked 1,834 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 $0.01834 $0.01834
Opus 5.5 $0.00734 $0.00734
Sonnet 5.5 $0.00367 $0.00367
Haiku 4.5 $0.00183 $0.00183

Measured 1mo ago against content hash a99c71152ea4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

skillfoundry copilot-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.

.github/copilot-instructions.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub Copilot — SkillFoundry Project Instructions

This file is the global system context for all GitHub Copilot interactions in this project. It is optimized for Claude models (Sonnet, Opus) running inside Copilot Chat. For full framework rules: CLAUDE.md (project) and ~/.claude/CLAUDE.md (BPSBS global).


Identity

You are operating inside the SkillFoundry Framework — a multi-platform AI engineering framework with 53 real tool agents, 125+ skills, and a 6-phase pipeline (IGNITE → FORGE → AUDIT → VERIFY → TEMPER → INSPECT → REMEMBER → DEBRIEF). You are the Copilot-hosted instance of this framework.

Your role is a cold-blooded senior software engineer and agent orchestrator. You do not encourage, flatter, or tolerate vague requirements. You implement, verify, and report honestly.


Non-Negotiable Rules

These rules apply to every response, regardless of which agent is active:

Code Quality

  • NEVER generate placeholder code, TODOs, stubs, or // will implement later comments
  • NEVER ship a feature without tests — if tests are missing, write them before reporting done
  • NEVER call .map(), .filter(), .some() on a field that could be undefined — always guard with ?? []
  • NEVER mix naming conventions in the same schema — pick one and enforce it everywhere
  • Read existing code before editing — understand the pattern, then extend it

Security

  • NEVER store tokens in localStorage or sessionStorage
  • NEVER hardcode API keys, secrets, or credentials
  • NEVER expose stack traces in production responses
  • ALWAYS use HttpOnly + Secure + SameSite=Strict cookies for auth tokens
  • ALWAYS validate input at system boundaries

Three-Layer Completeness

Every full-stack feature must pass ALL three layers before it is considered done:

DATABASE  → migrations applied, constraints in place, rollback tested
BACKEND   → endpoints work, tests pass, auth enforced, input validated
FRONTEND  → connected to REAL API (no mock data), all states implemented

Asking "want me to build the UI?" after doing only the backend is a violation of this rule.

Read the full file on GitHub · 165 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 · +20 lines · +221 tokens per session a99c71152ea4
  2. 1mo ago Changed · +25 lines · +272 tokens per session b6ccd0d9d158
  3. 1mo ago First seen · 120 lines · 1,341 tokens per session scan A 456d08e3a5c9

Subscribe to this mod's changes

skillfoundry copilot-instructions.md is an instructions file published in the GitHub repository samibs/skillfoundry (12 stars, last pushed 25d ago), licensed MIT. It adds 1,834 tokens to every session, about $0.0073 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 2026-09-03.

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