exstruct: Skill for Codex

.agents/skills/adr-reviewer/SKILL.md

adr-reviewer is a skill for Codex from harumiWeb/exstruct. It costs 66 tokens per session (614 once invoked), scanned A, original, BSD-3-Clause.

A review process for checking whether an Architecture Decision Record (ADR) makes a sound design decision and is supported by the project’s code, tests, and specifications.

In plain words
What is it for?
It helps review an ADR after automated lint checks, compare it with related decisions and specifications, verify its claims, and identify design or safety risks.
Why use it?
It catches duplicated or conflicting decisions, weak evidence, missing rollout or compatibility details, and choices that require human ownership before the ADR is merged.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: installed under .agents/ (shared by several agents).

This is harumiWeb/exstruct's own configuration. It tells Codex how to work on exstruct itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything exstruct configures →

Reuse

Borrowing it

Nothing to install: this file belongs to harumiWeb/exstruct. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/harumiWeb/exstruct/main/.agents/skills/adr-reviewer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/harumiWeb/exstruct

Made for: Codex.

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-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/skills/harumiweb/exstruct/adr-reviewer/github.svg)](https://agentmods.dev/skills/harumiweb/exstruct/adr-reviewer)
Your own site
<a href="https://agentmods.dev/skills/harumiweb/exstruct/adr-reviewer"><img src="https://agentmods.dev/badge/skills/harumiweb/exstruct/adr-reviewer/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-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/skills/harumiweb/exstruct/adr-reviewer"><img src="https://agentmods.dev/badge/skills/harumiweb/exstruct/adr-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 614 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 $0.00066 $0.00614
Opus 5.5 $0.00026 $0.00246
Sonnet 5.5 $0.00013 $0.00123
Haiku 4.5 $0.00007 $0.00061

Measured 2mo ago against content hash 5e39ef81bf5e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

adr-reviewer 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 2mo 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.

.agents/skills/adr-reviewer/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADR Reviewer

Review the policy decision, not just the document shape.

Read

  1. dev-docs/agents/adr-governance.md
  2. dev-docs/agents/adr-criteria.md
  3. dev-docs/agents/adr-workflow.md
  4. dev-docs/specs/adr-review.md
  5. The target ADR draft
  6. Related ADRs, relevant public docs under docs/ when public API / CLI / MCP contracts are in scope, internal specs, tests, src paths, and issue / PR context
  7. Existing adr-linter findings for the current draft

Workflow

  1. Confirm the current draft has no unresolved adr-linter high / medium findings. Only proceed with design review after that precondition is met.
  2. Read the ADR draft and identify the single policy question it is trying to resolve.
  3. Check whether the draft overlaps with, contradicts, or should supersede an existing ADR or spec.
  4. Verify that the cited Tests, Code, and Related specs actually support the claims being made, and include relevant public docs/ pages in scope when the ADR touches public API / CLI / MCP contracts.
  5. Review whether compatibility, rollout, fallback, migration, or safety consequences are covered when relevant.
  6. Detect human-owned decisions that AI should not settle, including public API break judgment, security or license calls, major directory reorganization, or unresolved product/spec direction.
  7. Return one verdict:
    • ready
    • revise
    • escalate

Output Contract

Return findings first, ordered by severity, and include:

  • verdict
  • scope
    • draft
    • related ADRs
    • public docs
    • specs
    • src
    • tests
    • issue / PR context
  • findings

Each finding should include:

  • type
    • decision-gap
    • scope-conflict
    • evidence-risk
    • rollout-gap
    • ownership-escalation
  • severity
  • summary
  • why it matters
  • suggested revision
  • evidence
    • draft
    • related sources

Also include top-level:

  • open questions
  • residual risks

Read the full file on GitHub · 70 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 2mo ago First seen · 70 lines · 66 tokens per session scan A 5e39ef81bf5e

Subscribe to this mod's changes

adr-reviewer is a skill published in the GitHub repository harumiWeb/exstruct (204 stars, last pushed 26d ago), licensed BSD-3-Clause. It adds 66 tokens to every session and 614 once invoked, about $0.0003 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 2026-08-30.

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