nw-certainty-by-construction SKILL.md skillA
nw-certainty-by-construction from nwave-ai/nwave is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nwave-ai/nwave/nw-certainty-by-construction@git:20261102.c67d57bPins git:20261102.c67d57b 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-certainty-by-construction/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261102.c67d57b, committed Nov 2, 2026
- Size
- 9,899 bytes
- Repository stars
- 633
- License
- MIT
Turn a stable layer claim (domain, application, adapter, or infrastructure) into a construction boundary so the invalid state cannot be built, and state honestly what remains unguarded. Use when a requirement says an invalid state or transition must not occur, when values need a canonical form, or when a rewrite/cache/optimisation must preserve meaning. Complements nw-fp-domain-modeling, which shows the encodings; this decides whether to encode, how strong the claim really is, and what…
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
# Certainty by Construction `nw-fp-domain-modeling` shows encodings; this decides whether a claim belongs in construction, its honest strength and the obligation left outside. Safety is exclusion only. Also establish **valid-state inhabitation**: at least one intended value has an acyclic construction path from admitted input. Public reachability (that path reaches a public observation) and liveness (eventual progress under temporal assumptions) are separate claims; construction alone does not establish either. **Layer-neutral (ADR-SSOT-002 §6a).** A claim is encoded at whichever layer it is stable, local and high-value — domain state/transition, application/ port outcome, adapter/integration failure translation, or infrastructure/ recovery policy. Which layers apply to a target derives from that target's declared `boundary`/`contract-shape`, never a hand-picked "domain-only" scope. ## Work from the claim outward 1. **State the proposition precisely.** "A `ConfirmedBooking` has an approved payment." Name its owner and its semantic equality. 2. **Draw the trust boundary.** Which inputs and writers are untrusted, where …
Read the whole file at its exact version.
How to install
mdr add nwave-ai/nwave/nw-certainty-by-construction@sha256:ce00b5f151387655The line at the top of this page pins the label git:20261102.c67d57b, 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.
[](https://markdownregistry.com/a/art_3j2kosruz4pgijka)
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Versions
The registry has recorded 1 version of this file, committed on Nov 2, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9899 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
nwave-ai/nwave · 633 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3j2kosruz4pgijka GET https://markdownregistry.com/api/v1/resolve?ref=nwave-ai/nwave/nw-certainty-by-construction GET https://markdownregistry.com/api/v1/blob/ce00b5f1513876557ae3bf014fe70dbdd4e69e237c8e046aa3d0d4153a83c80f
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.