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nw-formal-verification-tlaplus SKILL.md skillA

nw-formal-verification-tlaplus from nwave-ai/nwave is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add nwave-ai/nwave/nw-formal-verification-tlaplus@git:20260320.d98f3cb

Pins git:20260320.d98f3cb in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: nwave-ai/nwave
Path: nWave/skills/nw-formal-verification-tlaplus/SKILL.md
Versions recorded: 3
Latest version: git:20260320.d98f3cb, committed Mar 20, 2026
First version recorded: Mar 17, 2026
Size: 9,597 bytes
Repository stars: 633
License: MIT

TLA+ and PlusCal for specifying distributed system invariants. Decision heuristics for when formal verification adds value, key patterns, state explosion management, and alternatives comparison.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Formal Verification with TLA+

## When to Recommend Formal Verification

### Decision Tree

```
Is the system distributed or concurrent?
|
+-- No --> Complex state machine with high failure cost?
|          +-- No --> NOT cost-effective. Use property-based testing.
|          +-- Yes --> CONSIDER TLA+
|
+-- Yes --> Consensus, coordination, or distributed transactions?
|           +-- Yes --> RECOMMEND TLA+
|           +-- No --> Could concurrency bug cause data loss or safety issues?
|                      +-- Yes --> RECOMMEND TLA+
|                      +-- No --> OFFER as option
```

### Strong Indicators (Recommend)

| Domain | Why TLA+ Adds Value | Evidence |
|--------|-------------------|----------|
| Distributed consensus (Paxos, Raft) | Subtle interleaving bugs in leader election | Raft TLA+ spec ~400 lines, found implementation bugs |
| Financial distributed transactions | Atomicity violations cause monetary loss | AWS DynamoDB replication verified |
| Leader election, distributed locking | Split-brain, deadlock, stale-lock | AWS lock manager verified |
| Eventual consistency / CRDTs | Convergence proofs required | TLA+ CRDT framework verifies SEC |
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add nwave-ai/nwave/nw-formal-verification-tlaplus@sha256:25471c3404940428

The line at the top of this page pins the label git:20260320.d98f3cb, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_upzbnpimxnhpg5wa.svg)](https://markdownregistry.com/a/art_upzbnpimxnhpg5wa)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Mar 17, 2026 and Mar 20, 2026, about one every day.

version	committed	commit	size	audit
git:20260320.d98f3cb latest	2026-03-20	d98f3cb	9,597 B	A	view · diff
git:20260318.e6a0e19	2026-03-18	e6a0e19	9,575 B	A	view · diff
git:20260317.1d16147	2026-03-17	1d16147	9,566 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (9597 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

nwave-ai/nwave · 633 stars · license MIT · pushed 2026-11-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_upzbnpimxnhpg5wa
GET https://markdownregistry.com/api/v1/resolve?ref=nwave-ai/nwave/nw-formal-verification-tlaplus
GET https://markdownregistry.com/api/v1/blob/25471c3404940428a937f77a4c8c6bbf8e33258bd681156e0ece89cd1833f3d2

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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