What is er-server AGENTS.md?

Project instructions for EarthRanger, a Django web application for wildlife conservation and operational monitoring. They describe its apps, technologies, and overall architecture.

They support work on accounts, events, animal tracking, mapping, sensor data, background jobs, APIs, reports, and tests using the project's documented tools.

They help an agent understand where features belong in a large system that handles animals, patrols, alerts, maps, sensors, and reports.

How PADAS/er-server configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to PADAS/er-server. 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/PADAS/er-server/develop/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/PADAS/er-server

Made for: Codex, OpenCode.

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/padas/er-server/agents-md/github.svg)](https://agentmods.dev/instructions/padas/er-server/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/padas/er-server/agents-md"><img src="https://agentmods.dev/badge/instructions/padas/er-server/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/padas/er-server/agents-md"><img src="https://agentmods.dev/badge/instructions/padas/er-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 992 This file is loaded in full into every session.

When invoked 992 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.

Model	Per session	Once invoked
Fable 5.1	$0.00992	$0.00992
Opus 5.5	$0.00397	$0.00397
Sonnet 5.5	$0.00198	$0.00198
Haiku 4.5	$0.00099	$0.00099

Measured 2mo ago against content hash 17bf8bb120d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

er-server 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 · 100 lines

How it starts

The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

description: globs: alwaysApply: true

Project Overview

EarthRanger (DAS - Domain Awareness System) is a Django-based web application for wildlife conservation and domain awareness. This is a multi-tenant system that tracks wildlife, manages events, handles patrols, and provides real-time monitoring capabilities.

Architecture Overview

Architecture Documentation

Django Apps Structure

accounts/ - User management, permissions, and authentication
activity/ - Events, patrols, and alerting system
observations/ - Animal tracking, GPS data, and subject management
mapping/ - GIS integration, spatial data, and map services
sensors/ - IoT device handlers and data ingestion
analyzers/ - Real-time analysis (geofencing, proximity, immobility detection)
tracking/ - Source plugins for various GPS/telemetry providers
reports/ - Report generation and data distribution
utils/ - Shared utilities and common functionality

Key Technologies

Django 3.2
Django REST Framework (for API development)
python 3.10
pytest for unittesting
Celery (for background tasks)
Redis (for caching and task queues)
PostgreSQL 16
Docker and Kubernetes for deployment

Multi-Tenant Architecture

This system is multi-tenant aware. Most models have a das_tenant field that isolates data between tenants.

Key considerations:

Data isolation at the database level
Tenant context in requests and background tasks
Tenant-specific configurations and permissions
Cross-tenant queries require special authorization

Configuration

Settings Structure

das_server/settings.py - Base settings
das_server/local_settings_docker.py - Local development and prod overrides
Environment variables configured via .env file for local overrides

Key Environment Variables

DJANGO_SETTINGS_MODULE - Points to settings module
Database configuration via django-environ
DEBUG and DEV flags for development mode

Read the full file on GitHub · 100 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.

2mo ago First seen · 100 lines · 992 tokens per session scan A 17bf8bb120d6

Subscribe to this mod's changes

er-server AGENTS.md is an instructions file published in the GitHub repository PADAS/er-server (13 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 992 tokens to every session, about $0.0040 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.

er-server AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
er-server AGENTS.mdPADAS/er-server	Instructions file	13	3mo ago	Apache-2.0	A	992	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

er-server: Instructions file for Codex