Axon AGENTS.md

Axon AGENTS.md is an instructions file for Codex, OpenCode from jyunming/Axon. It costs 620 tokens per session, scanned A, original, MIT.

Repository instructions for Axon, a Python project that provides code search, an API, user interfaces, and a VS Code extension. They describe its folders, commands, style rules, and tests.

In plain words
What is it for?
Use them when developing Axon, running its Python or end-to-end tests, or working on its API, command-line tools, web interface, or VS Code extension.
Why use it?
They give contributors one reference for how the project is organized and how to format, check, type-check, build, and test changes.

Instructions file for CodexOpenCode

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/jyunming/axon/agents-md
Clone the repo
git clone --depth 1 https://github.com/jyunming/Axon

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 Axon AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/jyunming/axon/agents-md.svg)](https://agentmods.dev/instructions/jyunming/axon/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/jyunming/axon/agents-md"><img src="https://agentmods.dev/badge/instructions/jyunming/axon/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 620 This file is loaded in full into every session.
When invoked 620 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 $0.00620 $0.00620
Opus 5 $0.00310 $0.00310
Sonnet 5 $0.00124 $0.00124
Haiku 4.5 $0.00062 $0.00062

Measured 3d ago against content hash 8b61ecb4043c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Axon 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 · 27 lines

How it starts

The opening of the file, as written. The whole thing — 27 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Repository Guidelines

Project Structure & Module Organization

Core code lives in src/axon/. Key areas: api_routes/ for FastAPI handlers, graph_backends/ and dynamic_graph/ for graph retrieval, code_graph.py and code_retrieval.py for code-aware RAG, and repl.py / cli.py / mcp_server.py for user-facing entry points. Tests live in tests/; VS Code extension end-to-end coverage is under tests/e2e/. The bundled extension is in integrations/vscode-axon/. Top-level docs are in docs/.

Build, Test, and Development Commands

  • pip install -e ".[dev]": install Axon with local dev tools.
  • make format: run black and ruff --fix on src/ and tests/.
  • make lint: run ruff check and black --check.
  • make type-check: run mypy src/axon/ --ignore-missing-imports.
  • make test: run the Python test suite.
  • pytest tests/test_api.py -v --no-cov: run a focused test file.
  • pytest -q tests/e2e: run end-to-end coverage; requires Node and the compiled VS Code extension.
  • axon, axon-api, axon-ui, axon-mcp: run the REPL, API server, Streamlit UI, and MCP server.

Coding Style & Naming Conventions

Use Python 3.10+ and 4-space indentation. Black and Ruff are the enforced style tools; line length is 100. Prefer type hints on public functions and keep module names snake_case. Use PascalCase for classes, snake_case for functions/tests, and descriptive test names such as test_ingest_blocks_windows_system_path.

Testing Guidelines

Pytest is the main framework. Put new tests in tests/ as test_*.py; keep one behavior per test where practical. Add regression tests for bug fixes. For surface changes, cover the narrowest layer first (unit/API/REPL) before broader e2e tests. Avoid writing to real user config or store paths; use temp directories and explicit config overrides.

Commit & Pull Request Guidelines

Recent history favors short, imperative subjects with optional scopes, for example fix(cli): add --non-interactive flag or api(query): harden dry-run. Keep commits focused. PRs should include: the behavior change, test coverage, linked issues when applicable, and screenshots/GIFs for UI or VS Code panel changes. Update docs when commands, config, APIs, or user-visible flows change.

Read the full file on GitHub · 27 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 · 27 lines · 620 tokens per session scan A 8b61ecb4043c

Subscribe to this mod's changes

Axon AGENTS.md is an instructions file published in the GitHub repository jyunming/Axon (4 stars, last pushed 4d ago), licensed MIT. It adds 620 tokens to every session, about $0.0031 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.