mainbranch: Skill for Claude Code

.claude/skills/mb-status/SKILL.md

mb-status is a skill for Claude Code from noontide-co/mainbranch. It costs 39 tokens per session (1,422 once invoked), scanned A, original, MIT.

A status briefing for a Main Branch business workspace. It gathers workspace facts and presents what changed, what is healthy or out of date, and what should happen next.

In plain words
What is it for?
Getting a daily briefing, checking workspace health and readiness, reviewing money and content status, finding drift, and seeing ranked next actions.
Why use it?
It removes the need to inspect repository and business checks separately. The briefing gives one consistent view of readiness, saved work, updates, and suggested actions.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions Claude Code.

This is noontide-co/mainbranch's own configuration. It tells Claude Code how to work on mainbranch 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 mainbranch configures →

Part of the mainbranch plugin — 21 skills shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to noontide-co/mainbranch. 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/noontide-co/mainbranch/main/.claude/skills/mb-status/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/noontide-co/mainbranch

Made for: Claude Code.

Or install mainbranch, the plugin that ships this one along with the rest of its 21 skills.

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 mb-status

README.md
[![agentmods](https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-status/github.svg)](https://agentmods.dev/skills/noontide-co/mainbranch/mb-status)
Your own site
<a href="https://agentmods.dev/skills/noontide-co/mainbranch/mb-status"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-status/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 mb-status

Your own site · 80×15
<a href="https://agentmods.dev/skills/noontide-co/mainbranch/mb-status"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-status.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,422 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00039 $0.01422
Opus 5 $0.00019 $0.00711
Sonnet 5 $0.00008 $0.00284
Haiku 4.5 $0.00004 $0.00142

Measured 9d ago against content hash fd5c7561a159, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mb-status 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 9d 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.

.claude/skills/mb-status/SKILL.md · 158 lines

How it starts

The opening of the file, as written. The whole thing — 158 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Status

Show the operator the deterministic Main Branch briefing without duplicating repo-health checks in prose.

CLI facts first: Run mb status --json --peek before answering, then use that JSON as the source of truth.

Shared source: The portable daily start/status workflow contract lives in workflows/mb-start-status/workflow.md. This Claude skill is the Claude Code status shell over that source.

Shared contract markers: Keep these aligned with the shared source.

Required commands:

  • mb status --json --peek
  • mb start --json
  • mb doctor repair --plan

mb doctor repair --plan is read-only. If it exits nonzero while returning plan_interpretation and actions, treat that as findings to review, not as an opaque command failure.

Required fact paths:

  • money_path
  • money_path.policy
  • money_path.policy.thresholds_declared
  • money_path.active_bets
  • money_path.active_bets.unanchored
  • money_path.active_bets.over_cap
  • money_path.objects.proof.quality
  • validation.file_contracts
  • content_strategy
  • ranked_actions
  • update
  • readiness
  • readiness.dimensions.repo_runtime
  • readiness.dimensions.business_memory
  • drift.items
  • runtime.codex_cli
  • runtime.claude_code
  • since_last_check
  • journal
  • checkpoint
  • onboarding
  • integrations
  • github
  • topology.repo_boundary
  • brain.bets
  • brain.bets.active
  • brain.bets.due_soon
  • brain.bets.overdue
  • brain.bets.exit_criteria
  • brain.bets.exit_criteria.missing
  • brain.bets.exit_criteria.triggered_failure_signals
  • brain.bets.exit_criteria.triggered_double_down_signals
  • vocabulary

Approval gates: updates_repairs_migrations, file_writes, checkpoint, provider_mutation, publishing_or_spend, customer_contact, private_data, destructive_operations, and status_marker.

Public/private boundaries: no_secrets, no_raw_provider_exports, no_customer_member_data, no_private_runtime_settings, and no_raw_finance_legal_records.

Core route: status facts first, runtime mismatch gates before business routing, one owner-facing recommendation, business language first, and explicit approval before mutating the status marker or doing durable writes.

Read the full file on GitHub · 158 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. 9d ago First seen · 158 lines · 39 tokens per session scan A fd5c7561a159

Subscribe to this mod's changes

mb-status is a skill published in the GitHub repository noontide-co/mainbranch (39 stars, last pushed 25d ago), licensed MIT. It adds 39 tokens to every session and 1,422 once invoked, about $0.0002 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 2026-08-30.