repeaterbook AGENTS.md

repeaterbook AGENTS.md is an instructions file for Codex, OpenCode from MicaelJarniac/repeaterbook. It costs 1,805 tokens per session, scanned A, original, MIT.

Project instructions and a code map for a Python library that retrieves and caches ham-radio repeater data from RepeaterBook.com. It describes the source files, tests, database, and documentation.

In plain words
What is it for?
Use it when navigating, modifying, testing, or documenting the RepeaterBook library, especially its API client, SQLite storage, data models, and location-based queries.
Why use it?
It gives an agent the project context and conventions needed to make changes in the right places. This reduces time spent guessing how the library is organised.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/micaeljarniac/repeaterbook/agents-md
Clone the repo
git clone --depth 1 https://github.com/MicaelJarniac/repeaterbook

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.

agentmods badge for repeaterbook AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/micaeljarniac/repeaterbook/agents-md.svg)](https://agentmods.dev/instructions/micaeljarniac/repeaterbook/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/micaeljarniac/repeaterbook/agents-md"><img src="https://agentmods.dev/badge/instructions/micaeljarniac/repeaterbook/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 1,805 This file is loaded in full into every session.
When invoked 1,805 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.01805 $0.01805
Opus 5 $0.00903 $0.00903
Sonnet 5 $0.00361 $0.00361
Haiku 4.5 $0.00180 $0.00180

Measured 5d ago against content hash a63c23b68a29, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

repeaterbook 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 5d 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 · 131 lines

How it starts

The opening of the file, as written. The whole thing — 131 lines — stays where its author put it; the contents beside it link to each section on GitHub.

PROJECT KNOWLEDGE BASE

Generated: 2026-03-05 Commit: 23eae00 Branch: main

OVERVIEW

Python library for querying and caching ham radio repeater data from RepeaterBook.com. Core stack: aiohttp (async HTTP), SQLModel (ORM), attrs (immutable config), pydantic (validation).

STRUCTURE

repeaterbook/
├── src/repeaterbook/        # Library source (6 modules, ~1100 LOC)
│   ├── __init__.py          # Public API: Repeater, RepeaterBook, exceptions
│   ├── models.py            # SQLModel ORM + TypedDicts for API JSON + query types
│   ├── services.py          # API client, HTTP fetching, JSON→model conversion
│   ├── database.py          # SQLite persistence via SQLModel/SQLAlchemy
│   ├── queries.py           # Geo-spatial query builders (square, radius, band filters)
│   ├── exceptions.py        # 5-class hierarchy: RepeaterBookError base
│   └── utils.py             # LatLon, Radius, SquareBounds helpers
├── tests/                   # Pytest suite (1:1 with src modules)
│   ├── conftest.py          # anyio_backend fixture, local aiohttp test server
│   └── integration/         # Live API tests (@pytest.mark.integration)
├── docs/                    # MkDocs Material source
├── benchmarks/              # ASV benchmarking (scaffold only)
├── playground/              # Jupyter notebooks for experimentation
└── noxfile.py               # Automation: lint, format, type-check, test, docs

WHERE TO LOOK

Task Location Notes
Add/modify repeater fields models.pyRepeater class SQLModel table + pydantic validators
Change API parsing logic services.pyjson_to_model() Handle NA vs ROW payload differences
Modify API endpoints/routing services.pyRepeaterBookAPI.urls_export() NA vs ROW smart routing
Add query filters queries.py Returns ColumnElement[bool] for SQLAlchemy
Change caching behavior services.pyfetch_json() Atomic temp→rename write pattern
Database operations database.pyRepeaterBook populate(), query()
Add new exception types exceptions.py Inherit from RepeaterBookError
Geo calculations utils.py Uses haversine library
Async test fixtures tests/conftest.py local_server() spins up ephemeral aiohttp
CI pipeline .github/workflows/ci.yml Dynamic Nox session matrix

Read the full file on GitHub · 131 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. 5d ago First seen · 131 lines · 1,805 tokens per session scan A a63c23b68a29

Subscribe to this mod's changes

repeaterbook AGENTS.md is an instructions file published in the GitHub repository MicaelJarniac/repeaterbook (3 stars, last pushed yesterday), licensed MIT. It adds 1,805 tokens to every session, about $0.0090 per session on Opus 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 2026-08-31.