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.
curl -O https://raw.githubusercontent.com/noontide-co/mainbranch/main/.claude/skills/mb-bet/SKILL.mdgit clone --depth 1 https://github.com/noontide-co/mainbranchWrote 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/skills/noontide-co/mainbranch/mb-bet)<a href="https://agentmods.dev/skills/noontide-co/mainbranch/mb-bet"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-bet/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/skills/noontide-co/mainbranch/mb-bet"><img src="https://agentmods.dev/badge/skills/noontide-co/mainbranch/mb-bet.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00047 | $0.02899 |
| Opus 5 | $0.00023 | $0.01450 |
| Sonnet 5 | $0.00009 | $0.00580 |
| Haiku 4.5 | $0.00005 | $0.00290 |
Grade A, and why
mb-bet 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 11d 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 — 371 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Bet
Shared source: The portable workflow contract lives in
workflows/mb-bet/workflow.md. This Claude skill is the Claude Code shell over
that source.
Shared contract markers: Keep these aligned with the shared source.
Required commands:
mb status --json --peekmb start --jsonmb doctor repair --planmb validate --cross-refs --jsonmb checkpoint --plan --jsonmb similar-bets "<thesis>" --repo . --jsonmb books exposure --repo . --bet bets/YYYY-MM-DD-slug.md --jsonmb books exposure --repo . --active --json
Required fact paths:
money_pathmoney_path.objects.proof.qualityvalidation.file_contractscontent_strategyranked_actionsupdatereadinessdrift.itemsbrain.betsbrain.bets.activebrain.bets.due_soonbrain.bets.overduebrain.bets.exit_criteriarelationship_health.sections.betsrelationship_health.gapscheckpoint.pendingcheckpoint.pending.blockersbooksruntime.codex_cliruntime.claude_code
Approval gates: updates_repairs_migrations, file_writes, checkpoint,
provider_mutation, publishing_or_spend, customer_contact, private_data,
destructive_operations, structured_collection, and
public_issue_or_proposal.
Public/private boundaries: no_secrets, no_raw_provider_exports,
no_raw_transcripts, no_customer_member_data,
no_private_runtime_settings, no_private_dms_or_gated_communities,
no_raw_finance_legal_records, and no_raw_ledger_rows.
Core flow: Bet is a time-boxed wager, not an offer or push. Preserve new,
update, close, list, and narrate modes.
Marker phrase: new, update, close, list, and narrate.
Keep bets/YYYY-MM-DD-slug.md and the strict contract for typed links and
reverse linked_bets; aggregate exposure privacy; public-safe narration;
mb validate --cross-refs; checkpoint plan; and the Codex support boundary of
read-only planning until runtime smoke proves lifecycle writes.
Business bets are hub nodes in bets/. They connect decisions, research,
pushes, logs, documents, and outcomes without replacing any of them. Legacy
campaigns/ records may still be linked for old repos, but new coordinated
work uses pushes/.
A bet is not an offer. An offer is a durable thing the business sells. A bet is
a time-boxed operating hypothesis with appetite, target, deadline, evidence,
and a verdict. A successful bet may graduate into an offer, workflow, content
pillar, push, or decision; a failed bet should be closed with learning.
For the full offer/bet/push/proof routing rubric, use
.claude/reference/business-primitives/offer-bet-push-proof.md.
Use /mb-bet for five modes:
new- open a bet with hypothesis, appetite, MoneyPath anchor, metric, target, deadline, and links.update- add progress and link new evidence.close- record result, verdict, learning, and follow-up links.list- summarize active bets and deadlines.narrate- draft public-safe site, community, or social copy from repo truth.
Do not publish automatically. Narration drafts are files or message drafts only.
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.
- 11d ago First seen · 371 lines · 47 tokens per session scan A 414b33f10054
mb-bet is a skill published in the GitHub repository noontide-co/mainbranch (39 stars, last pushed 27d ago), licensed MIT. It adds 47 tokens to every session and 2,899 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.
Other skills, from other repositories
alive:create-walnut
Something new is emerging. A venture, an experiment, a person entering the orbit, a life area getting serious. It needs its own walnut — its own identity, history, and future. Scaffolds the full structure, maps existing context sources, and optionally migrates files across.
alive:bundle
Create, share, and graduate bundles — the unit of focused work within a walnut. Manages the full bundle lifecycle from creation through sharing to graduation.
alive-bundle
Create, manage, and graduate bundles -- the unit of focused work within a walnut.
alive-create
Scaffold a new walnut -- venture, experiment, person, life area, project.
alive-project
Regenerate now.json projections for all walnuts (mechanical, no approval needed).
Meeting Action Extractor
Extract decisions, action items, owners, deadlines, and follow-ups from meeting transcripts — structured output for project tracking.