exstruct: Skill for Codex

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

adr-suggester is a skill for Codex from harumiWeb/exstruct. It costs 60 tokens per session (359 once invoked), scanned A, original, BSD-3-Clause.

A decision aid for determining whether a change in ExStruct needs an ADR. An ADR, or architecture decision record, is a short document explaining an important design choice.

In plain words
What is it for?
Classifying changes as requiring, recommending, or not needing an ADR, and identifying related records and evidence.
Why use it?
It makes the documentation decision traceable by comparing the change with project rules, implementation, specifications, tests, and existing ADRs.

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-suggester/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-suggester

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/harumiweb/exstruct/adr-suggester"><img src="https://agentmods.dev/badge/skills/harumiweb/exstruct/adr-suggester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 359 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 $0.00060 $0.00359
Opus 5.5 $0.00024 $0.00144
Sonnet 5.5 $0.00012 $0.00072
Haiku 4.5 $0.00006 $0.00036

Measured 2mo ago against content hash c090a393247d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

adr-suggester 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-suggester/SKILL.md · 49 lines

What it actually says

ADR Suggester

Classify the change before drafting anything.

Read

  1. dev-docs/agents/adr-criteria.md
  2. dev-docs/agents/adr-governance.md
  3. Relevant files under dev-docs/adr/

Workflow

  1. Read the issue, PR, diff, or review comment that introduced the change.
  2. Read the relevant specs, implementation path, tests, and existing ADRs needed to justify the verdict.
  3. Map the change to one or more ExStruct design domains.
  4. Assemble an evidence triad:
    • specs contract
    • src symbol or execution path
    • tests that fix the current behavior, or an explicit note that evidence is missing
  5. Return one verdict:
    • required
    • recommended
    • not-needed
  6. If verdict is not not-needed, propose:
    • a candidate ADR title
    • existing ADRs to inspect or update
    • whether the next step is new-adr or update-existing-adr

Output Contract

Return a concise result with:

  • verdict
  • rationale
  • affected domains
  • existing ADR candidates
  • suggested next action
  • evidence triad
    • specs
    • src
    • tests

Do not draft the ADR body.

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 · 49 lines · 60 tokens per session scan A c090a393247d

Subscribe to this mod's changes

adr-suggester is a skill published in the GitHub repository harumiWeb/exstruct (204 stars, last pushed 26d ago), licensed BSD-3-Clause. It adds 60 tokens to every session and 359 once invoked, about $0.0002 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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