bb-plugin-accounts: Instructions file for Codex

AGENTS.md

bb-plugin-accounts AGENTS.md is an instructions file for Codex, OpenCode from MGrin/bb-plugin-accounts. It costs 1,104 tokens per session, scanned B, original, MIT.

Repository instructions for an agent working on a plugin that manages Claude Max account selection and switching. They document the project layout, required commands, tests, installation checks, and decisions that the plugin intentionally makes.

In plain words
What is it for?
They are for building, testing, type-checking, and reviewing changes to this plugin according to its local conventions.
Why use it?
They give contributors the repository-specific rules needed to avoid breaking managed installs, runtime dependencies, tests, or documented behavior.

Instructions file for CodexOpenCode

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

This is MGrin/bb-plugin-accounts's own configuration. It tells Codex and OpenCode how to work on bb-plugin-accounts 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 bb-plugin-accounts configures →

Reuse

Borrowing it

Nothing to install: this file belongs to MGrin/bb-plugin-accounts. 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/MGrin/bb-plugin-accounts/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/MGrin/bb-plugin-accounts

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 bb-plugin-accounts AGENTS.md

README.md
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Your own site
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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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/mgrin/bb-plugin-accounts/agents-md"><img src="https://agentmods.dev/badge/instructions/mgrin/bb-plugin-accounts/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,104 This file is loaded in full into every session.
When invoked 1,104 The same file — it is already loaded in full.
Security scan B 1 finding. 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 $0.01104 $0.01104
Opus 5 $0.00552 $0.00552
Sonnet 5 $0.00221 $0.00221
Haiku 4.5 $0.00110 $0.00110

Measured 2d ago against content hash 19fa0d970022, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade B, and why

bb-plugin-accounts AGENTS.md scanned grade B with 1 finding 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

`sudo chown`; that message is false — it is a read denial wearing an ownership error, and
AGENTS.md · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — bb-plugin-accounts

Claude Max account usage, placement and auto-switching for bb. README.md is the user-facing document and it is where the arguments live — why selection never spends money, why outage and pickBest disagree on purpose, why thread.created is a check and not a router. Read it before changing a decision; most of what looks like an inconsistency here is a ruling, cited and dated.

Commands, all run 2026-09-09

npm install          # or: npm ci --cache "$PWD/.npmcache"  (see below)
npm test             # node --test over lib.test.ts analytics/*.test.ts app/*.test.ts — 294 tests, 0 fail
npm run typecheck    # tsc --noEmit, rc=0

The gate is those two plus .github/workflows/test.yml and .github/workflows/managed-install.yml. The last reproduces bb's managed git install — runtime dependencies only, then bb plugin build — so a module imported at runtime but parked in devDependencies builds here and fails for every real user. better-sqlite3 and hono are types-only and must stay in devDependencies.

--cache "$PWD/.npmcache" is load-bearing inside an agent sandbox. A plain npm install there fails with "Your cache folder contains root-owned files" and prescribes sudo chown; that message is false — it is a read denial wearing an ownership error, and the remedy it prints is one an agent cannot run. .bb-env-setup.sh uses the in-workspace cache for the same reason, and must never exit non-zero: bb deletes a new worktree whose setup script fails.

This plugin does not own its inputs

It is the brain and the UI. It needs a usage cache at ~/.config/claude-usage/usage.json and a claude-acct executable that can swap live credentials — both produced by mgrin's dotfiles, not by this repo. A change to that contract lands in two repos or it lands broken. There is no per-thread account: one keychain means the machine bills one slot at a time, which is why placement moves the machine and can lose the race (~750ms of margin, measured).

Read the full file on GitHub · 76 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 · 76 lines · 1,104 tokens per session scan B 19fa0d970022

Subscribe to this mod's changes

bb-plugin-accounts AGENTS.md is an instructions file published in the GitHub repository MGrin/bb-plugin-accounts (3 stars, last pushed 3d ago), licensed MIT. It adds 1,104 tokens to every session, about $0.0055 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-10.

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