mainbranch (mb)
Engine umbrella for Main Branch — scaffolds, validates, and graphs business-as-files repos.
This package is the Python entry point. Workflows, playbooks, educational
content, and consumer-repo templates ship as bundled package data. Today, the
day-to-day "do work" surfaces are Claude Code skills and global Codex mb-*
skills grounded in the same deterministic mb facts. The mb CLI stays
runtime-agnostic by design so future adapters can operate against the same
business-as-files repo.
The source tree keeps the engine payload in one place: repo-root .claude/. During sdist/wheel builds, setup.py copies that tree into mb/_engine/.claude/ inside the build artifact so installed wheels can resolve skills, playbooks, reference materials, lenses, and educational prompts without a source checkout.
Install
pipx install mainbranch
That puts mb on your PATH. Verify:
mb --version
Subcommands
| Command | What it does |
|---|---|
mb onboard |
Human setup flow. Creates or connects a business repo, explains the local files/git/GitHub model, wires Claude Code and Codex guidance, verifies discovery, and prints the next start step. Supports --yes and --json for smoke tests. |
mb init |
Scaffold a new business repo (business folders, CLAUDE.md, AGENTS.md, CODEOWNERS, git init) and wire bundled runtime guidance. One question only: business name. |
mb doctor |
Diagnostic. Checks Claude Code, gh auth, network, librsvg, runtime wiring, and package freshness. Warns on cloud-backed finance paths and offers educational triage. |
mb status |
Daily briefing. Summarizes repo shape, install/runtime readiness, recent brain files, recent git activity, and GitHub tasks/proposals when gh is authenticated. Supports --json. |
mb start |
Runtime handoff. Verifies the current business repo, git, Claude Code, Codex guidance, and start-skill wiring, then prints the exact next step. Supports --json. |
mb validate |
Frontmatter shape check across current business repo folders, with compatibility reads for old migrated surfaces where needed. Exit 1 on any fail. |
mb graph |
Walk linked_research / linked_decisions / supersedes; emit Graphviz DOT to stdout. --open shells to dot + open. |
mb similar-bets |
Find similar past bets and offer outcomes from repo truth. |
mb checkpoint |
Plan or save a business-readable git checkpoint. |
mb update |
Refresh the Main Branch engine according to install mode and repair skill links. pipx and clone installs upgrade automatically; a uv tool install upgrades only after an explicit yes; any other wheel install gets the upgrade command printed. --check dry-runs; --json emits an envelope. |
mb pulse install |
Install an operator-owned daily pulse wrapper. |
mb leads grade |
Grade lead batches and calculate eligible-lead CPL beside raw CPL. |
mb ledger init |
Create the what's-working creative ledger structure. |
mb automation init |
Create an inspectable steered-loop automation contract. |
mb production plan |
Inspect launch/production readiness without mutating providers or repos. |
mb migrate |
Inspect and apply numbered repo schema migrations. status, --check, and --apply support --json; --check prints privacy-safe summaries by default, with full diffs behind --diff. |
mb connect |
Connect provider credentials without committing secrets, test provider health, inspect hygiene/identity, and report repair-safe integration status. |
mb site |
Inspect site readiness for launch-adjacent workflows. |
mb issue |
Draft and open privacy-safe GitHub issues from local friction. |
mb think <topic> |
Print the /mb-think workflow invocation hint for the currently supported runtime. |
mb resolve <key> |
Resolve a reference key from the curated library, local core files, or bundled stubs. |
mb skill path <name> |
Print the on-disk path to a bundled skill. |
mb skill validate <name> |
Validate bundled skill frontmatter, local references, and line-count gates. |
mb skill link --repo <path> |
Wire or repair Claude Code skill discovery for a business repo. Future runtime adapters should get equivalent wiring commands. |
mb skill repair --repo <path> |
Detect personal Claude Code skills that shadow Main Branch and safely back up stale Main Branch symlinks with --apply. |
mb educational <topic> |
Print an educational triage file. Powers mb doctor's "tell me more" prompts. |
Users on early 0.1.x installs must bootstrap once with
pipx upgrade mainbranch before mb update exists locally. Existing business
repos should run mb skill link --repo ., then mb skill repair --repo . after
upgrading.
If you installed Main Branch as a Claude Code plugin, package updates do not
change the plugin that Claude Code has already loaded. After updating, re-add the
Main Branch plugin (claude plugin marketplace add noontide-co/mainbranch) and
restart Claude Code.
Status
Main Branch is Claude Code first with supported Codex CLI guidance through
generated AGENTS.md and global mb-* skills. mb onboard, mb status,
mb start, and mb update are public package surfaces. Cursor, OpenClaw,
Hermes, and local runtimes remain roadmap work. The schema is v1 and will
evolve. The runtime boundary decision lives at
decisions/2026-05-01-mb-cli-vs-agent-workflows-boundary.md; the engine master
decision lives at decisions/2026-04-29-mb-vip-v0-1-0-master.md.
License
MIT.
1 maintainer
Metadata
1 maintainer
Release files for mainbranch 0.6.6
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| mainbranch-0.6.6.tar.gz | 1.8 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| mainbranch-0.6.6-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 3.4 MB
Release files / mainbranch-0.6.6.tar.gz
| Download URL | mainbranch-0.6.6.tar.gz |
|---|---|
| Size | 1.8 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
eea105c4ba957c64e8273d89b754a640df2b49368052704275e0ae53cc4d04bf
|
|
BLAKE2b-256 checksum How to use checksums |
954bf6b2b4f6d721db5bcc5517c60d30a6cc900774840f234a9df64fa3d71e0d
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 11, 2026.
Transparency logRelease files / mainbranch-0.6.6-py3-none-any.whl
| Download URL | mainbranch-0.6.6-py3-none-any.whl |
|---|---|
| Size | 1.6 MB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
080f120d47c51540c08b55b6b0bf443150dd346d5742bd1bb997eff5dd3801a6
|
|
BLAKE2b-256 checksum How to use checksums |
72a9ddb64b0c8356c6c314494f6d873a2376ee00db753b6253d993bec0e4833e
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Oct 11, 2026.
Transparency log
