Foundry-Local-Lab: Instructions file for Codex

AGENTS.md

Foundry-Local-Lab AGENTS.md is an instructions file for Codex, OpenCode from microsoft-foundry/Foundry-Local-Lab. It costs 2,289 tokens per session, scanned A, original, MIT.

Project instructions for a workshop that teaches developers to build AI applications with Foundry Local, a tool that runs language models on a device through an OpenAI-compatible API.

In plain words
What is it for?
Use it when editing the workshop guides or runnable Python, JavaScript, and C# examples, including the local creative-writer application and its browser interface.
Why use it?
It gives coding agents the workshop structure, supported languages, application layout, and details needed to work consistently with its labs and examples.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md; mentions Codex.

This is microsoft-foundry/Foundry-Local-Lab's own configuration. It tells Codex and OpenCode how to work on Foundry-Local-Lab 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 Foundry-Local-Lab configures →

Reuse

Borrowing it

Nothing to install: this file belongs to microsoft-foundry/Foundry-Local-Lab. 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-foundry/Foundry-Local-Lab/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/microsoft-foundry/Foundry-Local-Lab

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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Per session 2,289 This file is loaded in full into every session.
When invoked 2,289 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 $0.02289 $0.02289
Opus 5.5 $0.00916 $0.00916
Sonnet 5.5 $0.00458 $0.00458
Haiku 4.5 $0.00229 $0.00229

Measured 2mo ago against content hash 090fb7836d45, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Foundry-Local-Lab AGENTS.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.

AGENTS.md · 154 lines

How it starts

The opening of the file, as written. The whole thing — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Coding Agent Instructions

This file provides context for AI coding agents (GitHub Copilot, Copilot Workspace, Codex, etc.) working in this repository.

Project Overview

This is a hands-on workshop for building AI applications with Foundry Local — a lightweight runtime that downloads, manages, and serves language models entirely on-device via an OpenAI-compatible API. The workshop includes step-by-step lab guides and runnable code samples in Python, JavaScript, and C#.

Repository Structure

├── labs/                              # Markdown lab guides (Parts 1–13)
├── python/                            # Python code samples (Parts 2–6, 8–9, 11)
├── javascript/                        # JavaScript/Node.js code samples (Parts 2–6, 8–9, 11)
├── csharp/                            # C# / .NET 9 code samples (Parts 2–6, 8–9, 11)
├── zava-creative-writer-local/        # Part 7 capstone app + Part 12 UI (Python/JS/C#)
│   ├── ui/                            # Shared browser UI (vanilla HTML/CSS/JS)
│   └── src/
│       ├── api/                       # Python FastAPI multi-agent service (serves UI)
│       ├── javascript/                # Node.js CLI + HTTP server (server.mjs)
│       ├── csharp/                    # .NET console multi-agent app
│       └── csharp-web/                # .NET ASP.NET Core minimal API (serves UI)
├── samples/audio/                     # Part 9 sample WAV files + generator script
├── images/                            # Diagrams referenced by lab guides
├── README.md                          # Workshop overview and navigation
├── KNOWN-ISSUES.md                    # Known issues and workarounds
├── package.json                       # Root devDependency (mermaid-cli for diagrams)
└── AGENTS.md                          # This file

Language & Framework Details

Python

  • Location: python/, zava-creative-writer-local/src/api/
  • Dependencies: python/requirements.txt, zava-creative-writer-local/src/api/requirements.txt
  • Key packages: foundry-local-sdk, openai, agent-framework-foundry-local, fastapi, uvicorn
  • Min version: Python 3.9+
  • Run: cd python && pip install -r requirements.txt && python foundry-local.py

Read the full file on GitHub · 154 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 · 154 lines · 2,289 tokens per session scan A 090fb7836d45

Subscribe to this mod's changes

Foundry-Local-Lab AGENTS.md is an instructions file published in the GitHub repository microsoft-foundry/Foundry-Local-Lab (124 stars, last pushed 6mo ago), licensed MIT. It adds 2,289 tokens to every session, about $0.0092 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 2026-08-30.

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