deterministic-core SKILL.md skillA
deterministic-core from annatchijova/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add annatchijova/skills/deterministic-core@git:20260708.f31c428Pins git:20260708.f31c428 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- annatchijova/skills
- Path
deterministic-core/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260708.f31c428, committed Jul 8, 2026
- Size
- 5,544 bytes
- Repository stars
- 9
- License
- a license file GitHub does not identify
Keep any consequential output path reproducible bit-for-bit and tamper-evident — no floats in the decision path, canonical typed serialization, SHA-256 sealing, and a determinism check. Use this whenever you build or review code that produces a verdict, score, decision, risk number, classification, or any result that will be audited, sealed, hashed, or relied on as evidence; whenever a hash changes between runs and shouldn't; whenever floating-point arithmetic sits anywhere near a result that…
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
# Deterministic Core Some outputs only need to be approximately right. Others are load-bearing: a verdict, a score that decides an action, a number that goes into evidence. For those, "approximately reproducible" is a defect. If the same input can produce two different sealed results — across runs, machines, or dict orderings — the result cannot be defended as evidence, and the seal proves nothing. This skill is the discipline that makes a decision path reproducible bit-for-bit and tamper-evident. There are four rules. They compound: each one is load-bearing for the seal. ## Rule 1 — No float in the decision path Floating point is not deterministic enough for a load-bearing result. The same sum can differ by ordering, by platform, and by compiler; `0.1 + 0.2 != 0.3`. Any float in the path that produces a sealed number is a reproducibility violation waiting to surface on a different machine. Use exact arithmetic in the decision path: - `fractions.Fraction` for ratios, weights, likelihoods, and accumulations — exact, ordering-independent, and serializable as `numerator/denominator`. - integers where the quantity is genuinely integral (counts, indices). …
Read the whole file at its exact version.
How to install
mdr add annatchijova/skills/deterministic-core@sha256:2056c7de242734d2The line at the top of this page pins the label git:20260708.f31c428, 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_isc2ijth3rmiz2e4)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 8, 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 (5544 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
annatchijova/skills · 9 stars · license a license file GitHub does not identify · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_isc2ijth3rmiz2e4 GET https://markdownregistry.com/api/v1/resolve?ref=annatchijova/skills/deterministic-core GET https://markdownregistry.com/api/v1/blob/2056c7de242734d283db0325395777a0f8acf4d12df7b9ff392dadadaf843d1c
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.