press

A complete small press: everything required to turn a directory of Markdown chapters into a publishable book. One press all produces a verified 6 x 9 PDF, EPUB, single-file HTML, per-chapter reader site, stitched Markdown, plain text, DOCX, a GitHub Pages site with public downloads, and gated GitHub releases; the print pack adds a print-profile interior, a cover wrap with computed spine and EAN-13 barcode, and retail channel checklists.

Extracted from the production of Mostly Done. so the next book inherits the pipeline, the design, the editorial enforcement, and the scars.

New here? The quickstart is the canonical first-run path: a copyable walk from a blank machine to a built, verified book. Install with docs/INSTALL.md; understand the machine with the architecture, configure a book with the configuration reference, look up any artifact in the generated reference, trace every guarantee in the generated invariant ledger, see what is coming in the roadmap and what changed in the changelog; contribute with CONTRIBUTING.md.

MIT licensed, code and bundled content alike (the authoring skills, templates, and design files ship under the same terms; see LICENSE). A book you make with the press is yours entirely.

The press is maintained by one person (Clint Ecker, LGTM Systems, LLC); GOVERNANCE.md says plainly how decisions, releases, and conduct are handled, and CONTRIBUTING.md is the one command to verify a change.

Start a book

pip install -e .          # from a clone of this repo
press --version           # confirm the install; press --help lists commands
press new my-book         # scaffold a new book repository
cd my-book && git init && make all

Everything the pipeline knows about a book comes from the book's own config/ (see CLAUDE.md for the full contract). The scaffolded workflow calls this repo's reusable build at a pinned tag, which pulls a public, versioned toolchain image; a book under any account builds with no package grant and no configured secret. The pipeline pins the image so every build runs against the exact toolchain bytes the release was proven on.

Targets

• Building: pdf epub html markdown site txt docx pages source all -- press all runs the full gauntlet: editorial checks (including proving the checkers can fail), every format, source archive, Pages assembly, then structural verification of every artifact.
• Checking: check style verify verify-formats verify-pages -- check is the editorial law (source checks, checker self-test, style audit, jargon lint, registrations arithmetic, orphaned plates); the verify targets rebuild before verifying so a stale artifact can never be blessed, and verify-pages crawls the public site: every local reference must resolve, every declared download must exist and be linked, and the book's sentinels must appear on the public reading surface.
• Print pack: print verify-print coverwrap publish isbn onix pcn lookup -- a twoside interior with mirrored margins and black ink (verified from the rendered pages), a cover wrap whose spine width is computed from the interior and paper stock with a validated EAN-13 barcode, press publish kdp|ingram channel checklists, and press isbn assign to mint ISBNs from a registrant prefix you own. press onix generates the ONIX 3.0 metadata record distributors ingest; press pcn assembles the Library of Congress PrePub Book Link fields for the LCCN application. press lookup lccn|issn is an opt-in, read-only check that an already-issued LCCN or ISSN resolves to its record at the authority (never an issuance path; ordinary builds stay offline).
• Art: art cover illustrate -- press art commission submits the prompts the art-direction workflow wrote to image models (GPT Image, Gemini) at print-grade sizes, collecting candidates under art/candidates/; an author photograph at art/author-photo.jpg turns the portrait commission into an engraving of the actual author. press cover commissions the book's cover in a chosen style from the ten-style library (or one a book defines), and press illustrate commissions an in-book plate, map, diagram, or ornament -- optionally redrawn from source material an author supplies with --from. press art accept <file> --as cover|plate:<name>|logomark|portrait takes a chosen image into the book in house format.
• Operator: improve research aesthetic -- the agent workflows as shell commands, driven headlessly through the Claude Code CLI. press improve writes build/editorial-report.md and touches nothing (--apply is the deliberate hand); press research builds the table of authorities; press aesthetic prints the book's effective visual identity, and drafts from an author's description ("1970s pulp sci-fi paperback"), which every art commission then applies. For the web surfaces the stylesheet itself is the book's to own: replaces the house reader sheet entirely, and appends declarations that win the cascade on both the reader and the landing page.