axiom-verify

Verify Lean 4 proofs via the Axiom Axle API.

155|24|Updated Feb 14, 2026
One-click install
npx skills add https://github.com/workersio/spec --skill axiom-verify
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: axiom-verify
Source: https://github.com/workersio/spec/tree/main/plugins/axiom/skills/axiom-verify
Command: npx skills add https://github.com/workersio/spec --skill axiom-verify

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Verify and transform Lean 4 proofs using the Axiom (Axle) API. Use when the user works with Lean 4 code, formal mathematics, Mathlib theorems, or mentions axiom, axle, lean verify, proof verification, formal proof, or theorem checking -- even if they don't explicitly say "axiom" but are clearly working with Lean proofs that need machine verification.

Core Features & Use Cases

  • Cloud-based verification: check, verify_proof, and repair_proofs against a Mathlib-enabled Lean environment without local setup.
  • Automated transformations: normalize, extract_theorems, and repair_proofs to repair and tidy proofs.
  • CI-ready workflows: integrate with your Lean project pipelines to ensure proofs stay valid across upgrades and dependencies.

Quick Start

Provide Lean source code and a formal statement to verify against the Axle API, then review the verification results.

Frequently Asked Questions about axiom-verify

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I verify Lean 4 proofs without installing Lean locally?

Cloud-based Lean 4 proof verification uses the Axiom Axle API to validate formal statements and Mathlib theorems remotely, eliminating the need for a local Lean installation.

Can I repair and normalize Lean proofs using a cloud API?

Yes, you can repair and normalize Lean proofs using the Axiom Axle API, which applies automated transformations to tidy and fix proofs within a Mathlib-enabled Lean environment.

Do I need an Axle API key to check Mathlib theorems?

Yes, verifying Mathlib theorems through this cloud-based proof verification requires an Axle API key along with a Lean environment such as lean-4.28.0.

What is the best way to integrate formal proof verification into a CI pipeline?

Integrating Lean proof verification into CI pipelines involves calling the Axle API endpoints to check and validate proofs, ensuring theorems stay valid across dependency upgrades and project changes.

Does proof verification work with Lean source files and formal statements?

Yes, cloud-based proof verification works directly with Lean source files and formal statements by applying Axle API endpoints to transform, validate, and repair proofs referencing Mathlib.

Why does cloud-based theorem checking require a specific Lean environment?

Cloud-based theorem checking requires a specific Lean environment like lean-4.28.0 to ensure formal statements and Mathlib dependencies compile correctly during the Axle API validation process.