blueprint

A command for documenting a Lean project in Verso, a tool that publishes structured mathematical documents as interactive web pages. Each declaration gets a mathematical statement, a proof sketch, and links showing dependencies.

In plain words
What is it for?
Use it to create or update a project blueprint covering theorems, lemmas, definitions, proofs, and their dependency graph.
Why use it?
It makes a formal Lean codebase easier to read and shows which results are complete or still in progress without requiring readers to follow Lean tactics.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/cbirkbeck/mathlib-quality/blueprint
Clone the repo
git clone --depth 1 https://github.com/CBirkbeck/mathlib-quality
Per session 241 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 11,815 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00241 $0.11815
Opus 5 $0.00120 $0.05908
Sonnet 5 $0.00048 $0.02363
Haiku 4.5 $0.00024 $0.01182

Measured 2d ago against content hash 11869233ee40, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

blueprint 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 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.

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.

commands/blueprint.md · 1,119 lines

How it starts

The opening of the file, as written. The whole thing — 1,119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/blueprint — Unformalise a Lean project into a Verso blueprint

Produce or update a project's blueprint: a Verso document where every public declaration appears as a :::definition / :::theorem / :::lemma / :::proposition / :::corollary block with:

  • the mathematical statement (not the Lean type) in standard mathematical prose with KaTeX math,
  • (lean := "Qualified.Lean.Name") linking the prose statement to one or more Lean declarations,
  • {uses "label"}[] directives capturing dependency-graph edges,
  • a :::proof "label" block holding a paragraph-level mathematical sketch — not a Lean tactic transcript — with its own {uses} cross-links.

Verso auto-computes the completion status (sorry-free vs. in-progress) from the referenced Lean declarations' state. There is no \leanok directive in Verso; the graph colour comes from the declaration state directly, so the blueprint and the formal side cannot drift out of sync.

The published Verso blueprints worth eyeballing for style: verso-sphere-packing, verso-flt, verso-carleson, verso-noperthedron, verso-algebraic-combinatorics.

This skill does NOT bootstrap a verso-blueprint repo from scratch — it expects the project_template has been copied into the project (see Phase 0). It does NOT build the HTML site — that's ./scripts/ci-pages.sh, also Phase 0 / Phase 6 territory. It does the hard part: producing high-quality, mathematically faithful unformalisations.

Usage

/blueprint                              # whole project (default)
/blueprint <file.lean>                  # only this file's declarations
/blueprint --decl <Foo.bar>             # ★ only this declaration + its dependency closure
/blueprint --update                     # re-sync: add stubs for new decls, flag stale `(lean := …)`
/blueprint --check                      # author nothing; just enumerate inventory and report drift
/blueprint --migrate-from-latex [<dir>] # convert an old leanblueprint LaTeX tree (default: blueprint/src/)
                                        #   into Verso chapter files (mechanical 1:1)

Read the full file on GitHub · 1,119 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 · 1,119 lines · 241 tokens per session scan A 11869233ee40

Subscribe to this mod's changes

blueprint is a command published in the GitHub repository CBirkbeck/mathlib-quality (32 stars, last pushed 14d ago), licensed MIT. It adds 241 tokens to every session and 11,815 once invoked, about $0.0012 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.