Borrowing it
Nothing to install: this file belongs to jyunming/Axon. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/jyunming/Axon/main/AGENTS.mdgit clone --depth 1 https://github.com/jyunming/AxonWrote 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.
[](https://agentmods.dev/instructions/jyunming/axon/agents-md)<a href="https://agentmods.dev/instructions/jyunming/axon/agents-md"><img src="https://agentmods.dev/badge/instructions/jyunming/axon/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.
<a href="https://agentmods.dev/instructions/jyunming/axon/agents-md"><img src="https://agentmods.dev/badge/instructions/jyunming/axon/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00685 | $0.00685 |
| Opus 5.5 | $0.00274 | $0.00274 |
| Sonnet 5.5 | $0.00137 | $0.00137 |
| Haiku 4.5 | $0.00068 | $0.00068 |
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 28d 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.
How it starts
The opening of the file, as written. The whole thing — 29 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/.
Before adding new functionality, check docs/CAPABILITIES.md — a curated catalog of the reusable functions/classes already built per subsystem, kept specifically so new work extends or builds on existing capabilities instead of duplicating them. CLAUDE.md is the fuller repo-conventions reference this file summarizes.
Build, Test, and Development Commands
pip install -e ".[dev]": install Axon with local dev tools.make format: runblackandruff --fixonsrc/andtests/.make lint: runruff checkandblack --check.make type-check: runmypy 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-mcp: run the REPL, API server (which also serves the web GUI at /gui/), 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.
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.
- 28d ago Changed · +2 lines · +62 tokens per session 1daac2877afd
- 1mo ago Changed · +3 tokens per session a6c96da55198
- 1mo ago First seen · 27 lines · 620 tokens per session scan A 8b61ecb4043c
Axon AGENTS.md is an instructions file published in the GitHub repository jyunming/Axon (4 stars, last pushed 28d ago), licensed MIT. It adds 685 tokens to every session, about $0.0027 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 2026-08-31.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.