baron: Instructions file for Codex

AGENTS.md

baron AGENTS.md is an instructions file for Codex, OpenCode from loncadev/baron. It costs 529 tokens per session, scanned A, original, Apache-2.0.

Project instructions that require coding agents to track work through Baron, a shared layer for issues and source control, rather than directly through a vendor's tools.

In plain words
What is it for?
Guide agents through creating, starting, moving, listing, synchronizing, finishing, and merging work items with Baron.
Why use it?
They give agents consistent work states and commands across providers, avoiding provider-specific assumptions and untracked changes.

Instructions file for CodexOpenCode

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

This is loncadev/baron's own configuration. It tells Codex and OpenCode how to work on baron itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything baron configures →

Reuse

Borrowing it

Nothing to install: this file belongs to loncadev/baron. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/loncadev/baron/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/loncadev/baron

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 baron AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/loncadev/baron/agents-md/github.svg)](https://agentmods.dev/instructions/loncadev/baron/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/loncadev/baron/agents-md"><img src="https://agentmods.dev/badge/instructions/loncadev/baron/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.

agentmods 80×15 button for baron AGENTS.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/loncadev/baron/agents-md"><img src="https://agentmods.dev/badge/instructions/loncadev/baron/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 529 This file is loaded in full into every session.
When invoked 529 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00529 $0.00529
Opus 5.5 $0.00212 $0.00212
Sonnet 5.5 $0.00106 $0.00106
Haiku 4.5 $0.00053 $0.00053

Measured 2mo ago against content hash bdeab5d7fd7e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

baron 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 2mo 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 · 29 lines

What it actually says

Work tracking — route through Baron

Track work through Baron, not raw provider writes: it normalizes issues and source control across providers behind one contract, so speak its abstract vocabulary, never a vendor's native states.

  • Roles, not native states. Move work by role: backlog → ready → in_progress → in_review → done, plus blocked. Say "move it to in_progress", never "set the state to Active" — Baron maps the role to the provider.
  • Type roles this policy maps: initiative, epic, story, task, bug, subtask. Asking for one it does not map is an error, not a degrade — that list is what issue.create accepts here.
  • Tools: baron_issue_* (create / get / update / transition / comment / assign / link / query), baron_scm_* (branch / PR), baron_recipe_run, and baron_learning_* / baron_followup_* for durable decisions and follow-ups.
  • Daily loop — prefer the skills: /baron:task-new (create), /baron:task-start <id> (cut the canonical branch, move to in_progress, assign you), /baron:task-finish (draft PR), /baron:task-land (undraft + merge — never gh/az), /baron:task-move, /baron:task-list, /baron:task-sync. Each item's canonical branch is Baron-derived — use it verbatim, never invent one.
  • Reading/exploring a provider natively is fine, but make every work-item change through Baron so the role mapping, gap policy, and knowledge loop apply.

On this project (provider: github): roles ride labels (Baron provisions in-progress / in-review / done); sprints are NOT available — sprint queries degrade to empty. That empty is expected here, not a bug; parent/child is emulated via a parent:<id> label. Where a capability is missing Baron negotiates it (error / emulate / degrade) and logs it — an empty or emulated result from a degraded capability is expected behavior, not a silent failure to report as a bug.

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. 2mo ago First seen · 29 lines · 529 tokens per session scan A bdeab5d7fd7e

Subscribe to this mod's changes

baron AGENTS.md is an instructions file published in the GitHub repository loncadev/baron (1 stars, last pushed 23d ago), licensed Apache-2.0. It adds 529 tokens to every session, about $0.0021 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.

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