cognitive-fab/polygraph · skills/polyvers/SKILL.md

polyvers skillA

polyvers is agent-read markdown (skill) from cognitive-fab/polygraph: Check whether a state-machine version change is safe to ship against the live fleet, and produce the migration when the shape changed. Classifies the change into compatibility lanes (shape, vocabulary, intent, semantic, migration, composition), runs the mechanical gates those lanes require against fleet snapshots — setState round-trip, cross-version stimuli replay, migration validation, and the seeded model check ("can any live state be driven to an invariant violation under the new rules") — an.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add cognitive-fab/polygraph/polyvers@git:20260718.3df769b
Exact content
mdr add cognitive-fab/polygraph/polyvers@sha256:a62fad4028261e42

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

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

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Versions

versioncommittedcommitsizeaudit
git:20260718.3df769b latest2026-07-18 3df769b 7,640 BA view · diff
git:20260718.47842792026-07-18 4784279 6,601 BA view · diff
git:20260718.cbbbe5e2026-07-18 cbbbe5e 6,473 BA view · diff
git:20260718.f506a5e2026-07-18 f506a5e 6,144 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (7640 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

cognitive-fab/polygraph · 11 stars · license Apache-2.0 · pushed 2026-09-13 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lymotfwyptybhoye
GET https://markdownregistry.com/api/v1/resolve?ref=cognitive-fab/polygraph/polyvers
GET https://markdownregistry.com/api/v1/blob/a62fad4028261e420752c38c78d1734757925cf2c9a3ca4fdab06c8dccd10536

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.