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omniHarness: Instructions file for GitHub Copilot

.github/copilot-instructions.md

omniHarness copilot-instructions.md is an instructions file for GitHub Copilot from archimedes-run/omniHarness. It costs 1,717 tokens per session, scanned A, a copy of deer-flow copilot-instructions.md, MIT.

Onboarding instructions for OmniHarness, a full-stack application with a Python backend, a web frontend, Docker support, and integrations for tools and MCP. They document the required versions and verified development commands.

In plain words
What is it for?
Preparing the development environment, starting local or Docker-based services, and checking backend and frontend changes.
Why use it?
They give the coding agent a reliable starting point for setting up, building, testing, and running a large repository without using incompatible tools or commands.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file. Also seen: mentions subagents.

This is archimedes-run/omniHarness's own configuration. It tells GitHub Copilot how to work on omniHarness 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 omniHarness configures →

not rated 7repo yesterday A scan 1,717 tokens copy · 91% MIT
View source ↗ archimedes-run/omniHarness archimedes.run
Reuse

Borrowing it

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

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.

agentmods badge for omniHarness copilot-instructions.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/archimedes-run/omniharness/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/archimedes-run/omniharness/copilot-instructions/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for omniHarness copilot-instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/archimedes-run/omniharness/copilot-instructions"><img src="https://agentmods.dev/badge/instructions/archimedes-run/omniharness/copilot-instructions.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,717 This file is loaded in full into every session.
When invoked 1,717 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 91% 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 $0.01717 $0.01717
Opus 5.5 $0.00687 $0.00687
Sonnet 5.5 $0.00343 $0.00343
Haiku 4.5 $0.00172 $0.00172

Measured 1mo ago against content hash faef5d6ad9d3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

omniHarness 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.

Origin

This is a copy

91% identical to deer-flow copilot-instructions.md — 38 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/copilot-instructions.md · 214 lines

How it starts

The opening of the file, as written. The whole thing — 214 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copilot Onboarding Instructions for OmniHarness

Use this file as the default operating guide for this repository. Follow it first, and only search the codebase when this file is incomplete or incorrect.

1) Repository Summary

OmniHarness is a full-stack "super agent harness".

  • Backend: Python 3.12, LangGraph + FastAPI gateway, sandbox/tool system, memory, MCP integration.
  • Frontend: Next.js 16 + React 19 + TypeScript + pnpm.
  • Local dev entrypoint: root Makefile starts backend + frontend + nginx on http://localhost:2026.
  • Docker dev entrypoint: make docker-* (mode-aware provisioner startup from config.yaml).

Current repo footprint is medium-large (backend service, frontend app, docker stack, skills library, docs).

2) Runtime and Toolchain Requirements

Validated in this repo on macOS:

  • Node.js >=22 (validated with Node 23.11.0)
  • pnpm (repo expects lockfile generated by pnpm 10; validated with pnpm 10.26.2 and 10.15.0)
  • Python >=3.12 (CI uses 3.12)
  • uv (validated with 0.7.20)
  • nginx (required for make dev unified local endpoint)

Always run from repo root unless a command explicitly says otherwise.

3) Build/Test/Lint/Run - Verified Command Sequences

These were executed and validated in this repository.

A. Bootstrap and install

  1. Check prerequisites:
make check

Observed: passes when required tools are installed.

  1. Install dependencies (recommended order: backend then frontend, as implemented by make install):
make install

B. Backend CI-equivalent validation

Run from backend/:

make lint
make test

Validated results:

  • make lint: pass (ruff check .)
  • make test: pass (277 passed, 15 warnings in ~76.6s)

CI parity:

  • .github/workflows/backend-unit-tests.yml runs on pull requests.
  • CI executes uv sync --group dev, then make lint, then make test in backend/.

C. Frontend validation

Run from frontend/.

Recommended reliable sequence:

Read the full file on GitHub · 214 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 First seen · 214 lines · 1,717 tokens per session scan A faef5d6ad9d3

Subscribe to this mod's changes

omniHarness copilot-instructions.md is an instructions file published in the GitHub repository archimedes-run/omniHarness (7 stars, last pushed yesterday), licensed MIT. It adds 1,717 tokens to every session, about $0.0069 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to deer-flow copilot-instructions.md, differing in 38 lines, and is treated as a copy.

agentharnessaiai-agentsdockermcpmultipurpose
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