Lasm: Write formally verified web apps in Lean, deploy to Node, serverless, edge
Comments on “Lasm: Write formally verified web apps in Lean, deploy to Node, serverless, edge”
3 judges. Scored by all three judges. Only the day’s top stories get the claim check. How far stories are checked
Lasm is an open-source toolchain, released under MIT, that compiles ordinary Lean 4 programs ahead of time to WebAssembly so one codebase can ship as a Node server, serverless or edge function, WASI or Fastly module, or browser app.
Why it ranked
No. 120 of 127 with a score of 0.55. The panel rated it highest on new information (0.93) and technical depth (0.92), lowest on audience breadth (0.46). The judges disagreed most on promotional (spread 0.46), so the story is marked contested. Placed No. 120, No. 121 by score alone: the 13th Programming & dev tools story of the day (−0.080). The placement terms move stories; they are not part of the score.
- AI judgeJudge 2claude-haiku-5-5
- A substantive release of a Lean-to-Wasm toolchain with detailed deployment matrix and proofs; technically deep, early-stage project, with promotional sponsorship asks and a self-described early version.
- AI judgeJudge 3gpt-5.6-luna
- A technically detailed Lean-to-WebAssembly tool release with reproducible CI, benchmarks, deployment targets, and formal-verification examples. It is highly relevant to developers, though its README-style presentation and sponsorship appeal make it partly promotional.
Each judge wrote its line after answering the rubric, with the site and the author still hidden. Every answer behind this is in the table under Score.
Score
0.55total under rubric v2.3Contestedjudges differ by 0.46 on promotional
- Significance0.55
- Reader interest0.68
- Audience breadth0.46
- Practical relevance0.65
- Substantiated0.84
- Technical depth0.92
- New information0.93
- Counts against: Promotional0.33
- Counts against: Overclaim0.26
Each judge’s answer per question (0–1), their mean and spread, and what the question adds to the score (weight × mean).
| Question | Judge 1 | Judge 2 | Judge 3 | Mean | Spread | Weight | Contribution (weight times mean) |
|---|---|---|---|---|---|---|---|
| SignificanceHow much does this change what people in tech know or can do? | 0.54 | 0.40 | 0.72 | 0.55 | 0.32 | +0.24 | +0.133 |
| Reader interestWould a well-informed senior engineer or tech founder want to read this today, and likely pass it on? | 0.63 | 0.60 | 0.82 | 0.68 | 0.22 | +0.26 | +0.178 |
| Audience breadthHow many people who build technology does it concern? | 0.42 | 0.45 | 0.50 | 0.46 | 0.08 | +0.13 | +0.059 |
| Practical relevanceHow useful is it to someone who builds software or tech products? | 0.69 | 0.55 | 0.70 | 0.65 | 0.15 | +0.22 | +0.142 |
| SubstantiatedHow well is it backed? Consider whether it is the primary source, and whether its main claims come with data, code, a demo, a reproducible method or citations. | 0.97 | 0.70 | 0.85 | 0.84 | 0.27 | +0.05 | +0.042 |
| Technical depthHow technically substantive is it? | 0.99 | 0.80 | 0.95 | 0.92 | 0.20 | +0.05 | +0.046 |
| New informationDoes it contain information absent from the stories covered in the last 7 days (list provided)? | 0.91 | 0.90 | 0.98 | 0.93 | 0.08 | +0.05 | +0.047 |
| PromotionalIs it mainly marketing with little substance (a press release, ad or sponsored post with no real information)? A launch post that carries real news is not promotional. | 0.09 | 0.35 | 0.55 | 0.33 | 0.46 , above the contested threshold | −0.19 | −0.063 |
| OverclaimDo the headline or conclusions claim more than the body supports? | 0.29 | 0.30 | 0.20 | 0.26 | 0.10 | −0.11 | −0.029 |
| Sum of contributions | +0.555 | ||||||
| Claim-check penalty | 0.000 | ||||||
| Total, as published | 0.555 | ||||||
Spread is the highest minus the lowest judge answer. marks a spread above 0.40: the judges disagree, and the story is marked contested.
The badge for this ranking, for the author's page or anyone's: one line of HTML, and it links back here.
<a href="https://rubric.hrih.si/editions/2026-10-30/120/"><img src="https://rubric.hrih.si/badge/2026-10-30/120.svg" alt="Ranked #120 on Rubric, 30 Oct 2026" width="252" height="28"></a>Also covered by
No other coverage was clustered with this story.
Elsewhere
Elsewhere: HN 1 pts, front page
Recorded for context only, checked 30 Oct 2026, 05:47 UTC. It played no part in the ranking.