What is bump-mathlib?

A command for updating the mathlib dependency in a Lean project and repairing errors caused by the update. Mathlib is Lean’s large community library of mathematics.

Use it to update mathlib in a standalone project or mathlib itself, refresh dependencies, build the code, and resolve resulting errors.

Library updates can change names, definitions, or behavior; this workflow finds the new version and fixes the resulting build failures.

bump-mathlib — Command for Claude Code by CBirkbeck/mathlib-quality

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.

Clone the repo

git clone --depth 1 https://github.com/CBirkbeck/mathlib-quality

Made for: Claude Code.

Or install mathlib-quality, the plugin that ships this one along with the rest of its 2 skills, 24 commands, 2 hooks.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/cbirkbeck/mathlib-quality/bump-mathlib/github.svg)](https://agentmods.dev/commands/cbirkbeck/mathlib-quality/bump-mathlib)

Your own site

<a href="https://agentmods.dev/commands/cbirkbeck/mathlib-quality/bump-mathlib"><img src="https://agentmods.dev/badge/commands/cbirkbeck/mathlib-quality/bump-mathlib/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/cbirkbeck/mathlib-quality/bump-mathlib"><img src="https://agentmods.dev/badge/commands/cbirkbeck/mathlib-quality/bump-mathlib.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 2,939 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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00016	$0.02939
Opus 5.5	$0.00006	$0.01176
Sonnet 5.5	$0.00003	$0.00588
Haiku 4.5	$0.00002	$0.00294

Measured 1mo ago against content hash 3d87acd6229a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

bump-mathlib 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 1mo 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/bump-mathlib.md · 310 lines

How it starts

The opening of the file, as written. The whole thing — 310 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/bump-mathlib - Bump Mathlib and Fix Breakage

Update the mathlib dependency (or merge upstream for mathlib PRs), build, and fix all errors caused by the bump.

Usage

/bump-mathlib                    # Auto-detect context and bump to latest
/bump-mathlib <commit-or-date>   # Bump to a specific mathlib version/date

Workflow

Step 1: Detect Context

Determine whether this is:

A) A standalone project using mathlib as a dependency

Has lakefile.lean or lakefile.toml with a mathlib dependency
Check for require mathlib in lakefile

B) A mathlib PR (working directly in mathlib4)

Check: git remote -v shows leanprover-community/mathlib4
Or: current repo IS mathlib4

Report which context was detected before proceeding.

Step 2: Perform the Bump

Context A: Standalone Project

Read the current lakefile (lakefile.lean or lakefile.toml)
Find the current mathlib revision (look for require mathlib with a rev or commit hash)
Update to the target version:
- If no target specified: update to latest mathlib master
- If target specified: use that commit/tag
Run lake update mathlib to update the lockfile

# Update lake-manifest.json
lake update mathlib

Context B: Mathlib PR

Ensure upstream remote exists:

git remote -v | grep upstream || git remote add upstream https://github.com/leanprover-community/mathlib4.git

Fetch upstream:
```
git fetch upstream
```
Merge upstream master:
```
git merge upstream/master
```
If there are merge conflicts, resolve them:
- For files only modified in upstream: accept theirs
- For files modified in both: present conflicts to user for guidance
- For files only modified locally: keep ours

Step 3: Fetch Cached Artifacts (verification gate)

CRITICAL: Always fetch the Mathlib cache before building, otherwise compilation will take hours.

lake exe cache get

Read the full file on GitHub · 310 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.

1mo ago First seen · 310 lines · 16 tokens per session scan A 3d87acd6229a

Subscribe to this mod's changes

bump-mathlib is a command published in the GitHub repository CBirkbeck/mathlib-quality (35 stars, last pushed 5d ago), licensed MIT. It adds 16 tokens to every session and 2,939 once invoked, about $0.0001 per session on Opus 5.5. 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.

Scientific

verify-math

Verify a self-authored mathematical result end to end by routing claims across adversarial review, numerical falsification, symbolic or CAS checks, and Lean, then aggregating one report. Use when a theorem, proposition, conjecture, or paper-wide mathematical argument needs the appropriate combination of verification…

flonat/flonat-research · 81 tokens

bump-mathlib