adr-sync

adr-sync is a skill for Claude Code from open-horizon-labs/repo-native-alignment. It costs 30 tokens per session (984 once invoked), scanned A, original, MIT.

A command for connecting Architecture Decision Records (ADRs)—documents that explain important design choices—to executable checks.

In plain words
What is it for?
Use it to add validation references to ADRs, compile their validation manifests, and report missing checks.
Why use it?
It makes ADR claims checkable and shows when the repository has no real test or audit for a claim, without inventing evidence.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Part of the rna-mcp plugin — 6 skills, 1 command shipped together

Good fit Use it to add validation references to ADRs, compile their validation manifests, and report missing checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/open-horizon-labs/repo-native-alignment/adr-sync
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add open-horizon-labs/repo-native-alignment --skill adr-sync
Clone the repo
git clone --depth 1 https://github.com/open-horizon-labs/repo-native-alignment

Made for: Claude Code.

Or install rna-mcp, the plugin that ships this one along with the rest of its 6 skills, 1 command.

Wrote 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.

agentmods badge for adr-sync

README.md
[![agentmods](https://agentmods.dev/badge/skills/open-horizon-labs/repo-native-alignment/adr-sync/github.svg)](https://agentmods.dev/skills/open-horizon-labs/repo-native-alignment/adr-sync)
Your own site
<a href="https://agentmods.dev/skills/open-horizon-labs/repo-native-alignment/adr-sync"><img src="https://agentmods.dev/badge/skills/open-horizon-labs/repo-native-alignment/adr-sync/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for adr-sync

Your own site · 80×15
<a href="https://agentmods.dev/skills/open-horizon-labs/repo-native-alignment/adr-sync"><img src="https://agentmods.dev/badge/skills/open-horizon-labs/repo-native-alignment/adr-sync.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 984 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00984
Opus 5.5 $0.00012 $0.00394
Sonnet 5.5 $0.00006 $0.00197
Haiku 4.5 $0.00003 $0.00098

Measured 1mo ago against content hash c0bb288d7b89, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

adr-sync 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 1mo ago.

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.

plugin/skills/adr-sync/SKILL.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR Sync

Translate ADR prose into executable validation declarations and verify that ADRs are actually wired to real checks.

Arguments

$ARGUMENTS may be a single ADR path or a directory. Default to docs/ADRs/ when omitted.

Examples:

  • /rna-mcp:adr-sync docs/ADRs/001-event-bus-extraction-pipeline.md
  • /rna-mcp:adr-sync docs/ADRs

Goal

Make ADRs mechanically checkable without introducing a second source of truth.

The ADR markdown stays canonical. This skill:

  • adds or updates thin frontmatter validation declarations
  • points them directly at real repo executables
  • runs the repo-native ADR compile/check path
  • reports gaps where no real executable exists yet

Valid executable references

Prefer normal test-suite checks first:

  • exact cargo test names as reported by cargo test -- --list
  • exact built-in ADR audit names when the claim is a code-shape constraint
  • exact smoke fixture paths only when you need a repo-native delivery scenario

Use exact script paths only as a fallback when a claim genuinely cannot be expressed as a normal test or built-in audit yet.

Do not invent opaque evidence IDs or a registry layer in the ADR source. Do not fabricate validations that do not exist.

Process

1. Inspect the ADR(s)

  • Read the ADR markdown and current frontmatter
  • Extract the concrete claims that should be checkable
  • Look for existing validations already present in the repo:
    • exact cargo test -- --list names
    • built-in ADR audits via repo-native-alignment adr audit <name>
    • smoke fixtures under .github/fixtures/ only when a repo-native delivery check is required
    • scripts under .github/scripts/ or scripts/ only if no honest test or audit exists yet

2. Add/update frontmatter only where mapping is honest

Expected shape:

---
id: 001-event-bus-extraction-pipeline
status: implemented
validate:
  cargo_tests:
    - exact::cargo::test_name
  audits:
    - exact_audit_name
  smoke:
    - .github/fixtures/smoke

Read the full file on GitHub · 121 lines

Changes

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.

  1. 1mo ago First seen · 121 lines · 30 tokens per session scan A c0bb288d7b89

Subscribe to this mod's changes

adr-sync is a skill published in the GitHub repository open-horizon-labs/repo-native-alignment (6 stars, last pushed 1mo ago), licensed MIT. It adds 30 tokens to every session and 984 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-31.

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