Laying out the streets…STEP 1 OF 3

h5i · Office #50,153

Build and formally verify web apps with Rust and Lean 4

In the Building and consuming APIs neighborhood (Developer). In town since 24 Oct 2026.

Nobody has claimed this office yet. Tablif records every new product and gives it an office; when its owner claims it, the lights go on.

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What Tablif read on h5i's site

h5i describes itself as: “h5i: Rust Web Framework with Lean 4 Verification”

What it is

Calls itself “web framework”.

  • Calls itself: web framework
“…h5i: Rust Web Framework with Lean 4 Verification”
“…web framework”

Where it puts itself

Claims “The verifiable web framework for Rust”.

  • Superlative claim: The verifiable web framework for Rust
“The verifiable web framework for Rust”

Who it sells to

Sells to developers. Built for teams. Made for Rust developers.

  • Sells to: developers
  • Company size: teams
  • Made for: Rust developers
“It's designed for Rust developers and teams building AI-generated or security-critical applications.”

How it runs

A web app. AI is a side feature.

  • Kind: web
  • AI role: a side feature
“Web Framework Crate”
“It's designed for Rust developers and teams building AI-generated or security-critical applications.”

What it works with

Names Aeneas, Axum and 2 more on its pages.

  • Names: Aeneas · Axum · Charon · +1
“Aeneas extracts a Rust application kernel into Lean definitions for theorems such as authorized.”
“…h5i is a Rust web framework built on Axum”

What it offers as proof

Live, no waitlist. Claims “700+ stars”. Publishes docs and a blog.

  • Number claimed: 700+ stars
“Get Started with h5i”
“700+ stars”

Sources

Tablif read these pages, last on 24 Oct 2026. Everything above is what the product says about itself; Tablif does not verify every claim.

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