Borrowing it
Nothing to install: this file belongs to frostyard/snosi. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/frostyard/snosi/main/.github/prompts/native-ab-change.mdgit clone --depth 1 https://github.com/frostyard/snosiWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/commands/frostyard/snosi/native-ab-change)<a href="https://agentmods.dev/commands/frostyard/snosi/native-ab-change"><img src="https://agentmods.dev/badge/commands/frostyard/snosi/native-ab-change.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00000 | $0.00497 |
| Opus 5 | $0.00000 | $0.00249 |
| Sonnet 5 | $0.00000 | $0.00099 |
| Haiku 4.5 | $0.00000 | $0.00050 |
Grade A, and why
native-ab-change scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Prompt: change the native A/B path
Goal: <the native A/B behavior to add or fix>
Read first: docs/native-ab-contracts.md (the frozen source of truth for
naming, paths, and policy), docs/native-ab-capacities.md,
docs/native-ab-publication.md, and the "Native A/B" sections of CLAUDE.md.
Rules that are easy to break here:
- Product-neutral disk/boot mechanics live in
shared/outformat/ab-root/. Per-product repart definitions, sysupdate transfers, and channel settings live inshared/native-ab/channels/<product>/. Never move one into the other. mkosiaccumulates list settings (Packages=,FinalizeScripts=, …) inInclude=encounter order across the whole resolved config. The arbiter for any composition refactor is a byte-level diff ofmkosi --profile <p> summarybefore and after, normalizingSeed:,Prepare Scripts:tmpdirs, andImage Version:. Delete.mkosi-private/history/latest.jsonfirst, or the cached profile silently overrides--profile.floe-ab-rawis a permanent, never-published dev fixture. The published products arefloe-ab,snow-ab, andsnowfield-ab, and they must keep passingcheck-native-publication-guard.sh.- Enablement belongs in presets or static
/usrwants links, never in shipped/etcsymlinks or runtimesystemctl enable/disable. - The PCR signing key must be RSA-2048; the MOK key stays RSA-4096.
Validate, cheapest first:
test/native-ab-static-test.sh
test/native-ab-contracts-test.sh
check-native-publication-guard.sh
then, only if the change warrants it and the machine has root plus KVM, the
matching QEMU harness (test/native-ab-update-test.sh,
test/native-ab-components-test.sh, test/native-ab-secure-boot-test.sh,
test/native-installer-e2e-test.sh).
Finish by recording contract or capacity changes in docs/native-ab-contracts.md
/ docs/native-ab-capacities.md and summarizing them in CLAUDE.md.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- today Changed 54186fdb90ca
- yesterday First seen · 42 lines · 0 tokens per session scan A 64da2172b0cc
native-ab-change is a command published in the GitHub repository frostyard/snosi (24 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 497 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.
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