baryon-mcp AGENTS.md

baryon-mcp AGENTS.md is an instructions file for Codex, OpenCode from combor/baryon-mcp. It costs 574 tokens per session, scanned A, original, BSD-3-Clause.

Repository instructions for coding agents and people working on baryon-mcp. They emphasize small changes, matching tests, evidence-based reasoning, and asking when requirements are unclear.

In plain words
What is it for?
Use them when editing baryon-mcp to keep changes focused, add reliable tests, explain commit decisions, and surface uncertainty.
Why use it?
They reduce unnecessary refactoring, invented problems, and changes based on guesses.

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/combor/baryon-mcp/agents-md
Clone the repo
git clone --depth 1 https://github.com/combor/baryon-mcp

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 baryon-mcp AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/combor/baryon-mcp/agents-md.svg)](https://agentmods.dev/instructions/combor/baryon-mcp/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/combor/baryon-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/combor/baryon-mcp/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 574 This file is loaded in full into every session.
When invoked 574 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 $0.00574 $0.00574
Opus 5 $0.00287 $0.00287
Sonnet 5 $0.00115 $0.00115
Haiku 4.5 $0.00057 $0.00057

Measured 2d ago against content hash dae635ca8b24, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

baryon-mcp 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 2d 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 · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md

Guidance for AI coding agents (and humans) working in this repository.

Editing guidance

  • Prefer small, focused changes with matching test updates
  • Keep scope tight; avoid broad refactors
  • Prefer small, reliable tests that fail before and pass after
  • Avoid overconfident root-cause claims
  • Do NOT invent bugs; if evidence is weak, say so and skip.
  • Anchor each suggestion to concrete evidence
  • Avoid generic advice; make each recommendation actionable and specific
  • In commit messages, explain why the change was made.
  • When a request is ambiguous, ask for clarification instead of guessing. Do not change your answer based on reactions — either stand by your reasoning or honestly say you are unsure.
1. Think Before Coding

Don't assume. Don't hide confusion. Surface tradeoffs.

Before implementing:

  • State your assumptions explicitly. If uncertain, ask.
  • If multiple interpretations exist, present them - don't pick silently.
  • If a simpler approach exists, say so. Push back when warranted.
  • If something is unclear, stop. Name what's confusing. Ask.
2. Simplicity First

Minimum code that solves the problem. Nothing speculative.

  • No features beyond what was asked.
  • No abstractions for single-use code.
  • No "flexibility" or "configurability" that wasn't requested.
  • No error handling for impossible scenarios.
  • If you write 200 lines and it could be 50, rewrite it.

Ask yourself: "Would a senior engineer say this is overcomplicated?" If yes, simplify.

3. Surgical Changes

Touch only what you must. Clean up only your own mess.

When editing existing code:

  • Don't "improve" adjacent code, comments, or formatting.
  • Don't refactor things that aren't broken.
  • Match existing style, even if you'd do it differently.
  • If you notice unrelated dead code, mention it - don't delete it.

When your changes create orphans:

  • Remove imports/variables/functions that YOUR changes made unused.
  • Don't remove pre-existing dead code unless asked.

Read the full file on GitHub · 70 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. 2d ago First seen · 70 lines · 574 tokens per session scan A dae635ca8b24

Subscribe to this mod's changes

baryon-mcp AGENTS.md is an instructions file published in the GitHub repository combor/baryon-mcp (0 stars, last pushed 17d ago), licensed BSD-3-Clause. It adds 574 tokens to every session, about $0.0029 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.