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kaitai_struct_awkward_runtime AGENTS.md

kaitai_struct_awkward_runtime AGENTS.md is an instructions file for Codex, OpenCode from det-lab/kaitai_struct_awkward_runtime. It costs 995 tokens per session, scanned A, original, MIT.

A guide for a Python package that works with Kaitai Struct, a tool that turns binary-data descriptions into code for reading files or network formats. It covers the package, generated C++ test files, compiled libraries, compiler setup, and tests.

In plain words
What is it for?
Use it when installing dependencies, updating the Python runtime, working with Kaitai schemas, compiling C++ test artifacts, running tests, or checking code quality.
Why use it?
It explains the several languages and build tools involved, reducing setup mistakes when changing the parser or its generated-code tests.

Instructions file for CodexOpenCode

not rated 2 3d ago A scan 995 tokens original MIT
View the source file det-lab/kaitai_struct_awkward_runtime
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/det-lab/kaitai_struct_awkward_runtime/agents-md
Clone the repo
git clone --depth 1 https://github.com/det-lab/kaitai_struct_awkward_runtime

Made for: Codex, OpenCode.

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README.md
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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 $0.00995 $0.00995
Opus 5 $0.00498 $0.00498
Sonnet 5 $0.00199 $0.00199
Haiku 4.5 $0.00100 $0.00100

Measured 3d ago against content hash 88dfab438888, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

kaitai_struct_awkward_runtime 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 3d 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 · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure & Module Organization

  • src/awkward_kaitai/: Python package (runtime, builder, reader, data). Public API lives here.
  • tests/: Pytest suite (test_*.py) plus JSON fixtures.
  • example_data/schemas/: Kaitai .ksy schemas used to generate C++ sources.
  • test_artifacts/: Generated .cpp files and compiled .so libraries (build outputs).
  • kaitai_struct_compiler/: Kaitai Struct compiler submodule (Scala/SBT build).
  • docs/, mkdocs.yml: Documentation site content and configuration.

Setup & Dependencies

  • Initialize submodules first: git submodule update --init --recursive.
  • Toolchain: Java + SBT for the compiler, CMake + C++ toolchain for building shared libs, Python 3.8+.
  • Kaitai compiler requirement: kaitai-struct-compiler 0.11+ with the awkward target.

Build, Test, and Development Commands

  • pip install -e . installs the package in editable mode.
  • nox -s lint runs pre-commit hooks across the repo.
  • nox -s pylint runs pylint on the package.
  • nox -s tests runs the pytest suite.
  • make test builds C++ test artifacts and runs all tests.
  • make compile_test testcase=hello_world rebuilds a single schema and runs its test.
  • make clean removes local/, build/, and test_artifacts/ outputs.

Makefile Workflow (Detailed)

  • Prereqs: Java + SBT for kaitai_struct_compiler/, plus a working C++ toolchain and Python env.
  • make cpp builds Scala compiler jars (via SBT) and generates test_artifacts/*.cpp from example_data/schemas/*.ksy.
  • make test runs the full pipeline: compile compiler → generate C++ → build shared libs test_artifacts/lib*.so → pytest.
  • make compile_test testcase=<name> is the fast loop for a single schema (<name> must match a file in example_data/schemas/).
  • make clean wipes generated artifacts and SBT build products; rerun make test after cleaning.

Coding Style & Naming Conventions

  • Python formatting and linting are enforced by pre-commit (Black, Ruff, mypy, codespell).
  • Indentation is 4 spaces; keep line length flexible (Ruff ignores E501).
  • Tests are named tests/test_*.py (enforced by pre-commit).
  • Prefer from __future__ import annotations for new modules (Ruff isort rule).

Read the full file on GitHub · 61 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. 3d ago First seen · 61 lines · 995 tokens per session scan A 88dfab438888

Subscribe to this mod's changes

kaitai_struct_awkward_runtime AGENTS.md is an instructions file published in the GitHub repository det-lab/kaitai_struct_awkward_runtime (2 stars, last pushed 3d ago), licensed MIT. It adds 995 tokens to every session, about $0.0050 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.

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