hvir: Skill for Claude Code

.claude/skills/hvir-implement-issue/SKILL.md

hvir-implement-issue is a skill for Claude Code, Codex from jarmak-personal/hvir. It costs 81 tokens per session (2,283 once invoked), scanned A, original, MIT.

A controlled workflow for implementing one already-approved hvir GitHub issue in an existing codebase.

In plain words
What is it for?
Use it for issue-based code or documentation work that crosses features, touches established seams, or might duplicate existing behavior.
Why use it?
It checks the issue, product rules, architecture, ownership, and verification requirements before code is changed.

Skill for Claude CodeCodex

Written for Claude Code and Codex: installed under .claude/, but also agents/openai.yaml present. Also seen: mentions AGENTS.md.

This is jarmak-personal/hvir's own configuration. It tells Claude Code and Codex how to work on hvir 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 hvir configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jarmak-personal/hvir. 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/jarmak-personal/hvir/main/.claude/skills/hvir-implement-issue/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/jarmak-personal/hvir

Made for: Claude Code, 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 hvir-implement-issue

README.md
[![agentmods](https://agentmods.dev/badge/skills/jarmak-personal/hvir/hvir-implement-issue/github.svg)](https://agentmods.dev/skills/jarmak-personal/hvir/hvir-implement-issue)
Your own site
<a href="https://agentmods.dev/skills/jarmak-personal/hvir/hvir-implement-issue"><img src="https://agentmods.dev/badge/skills/jarmak-personal/hvir/hvir-implement-issue/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 hvir-implement-issue

Your own site · 80×15
<a href="https://agentmods.dev/skills/jarmak-personal/hvir/hvir-implement-issue"><img src="https://agentmods.dev/badge/skills/jarmak-personal/hvir/hvir-implement-issue.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,283 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 $0.00081 $0.02283
Opus 5 $0.00041 $0.01141
Sonnet 5 $0.00016 $0.00457
Haiku 4.5 $0.00008 $0.00228

Measured today against content hash ed36151b9856, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

hvir-implement-issue 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.

.claude/skills/hvir-implement-issue/SKILL.md · 190 lines

How it starts

The opening of the file, as written. The whole thing — 190 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implement an hvir issue

Implement the governing issue without allowing its proposed solution to bypass hvir's product constraints or architecture. Spend real effort on ownership and decomposition before editing; raise material concerns while they are still cheap to resolve.

Require an aligned issue

Start from an issue number plus its current, aligned problem statement, desired outcome, and acceptance criteria. If no governing issue exists, stop and use hvir-create-issue before implementation. Run a large epic through hvir-implement-epic, which coordinates independently deliverable child issues instead of producing one giant implementation pull request.

Read AGENTS.md, docs/design.md, the relevant CONTRIBUTING.md sections and ADRs, and the governing issue. Reuse unchanged context already read in this interaction; a correction needs the changed requirement, source, and evidence, not repeated onboarding. Resolve these questions before changing files:

  • What user or contributor outcome is being implemented?
  • Is the issue aligned with the current product boundaries and accepted decisions?
  • Which requirements are settled, and which comments are still exploratory?
  • Is a new or superseding ADR required before implementation?
  • Is this issue small enough for one focused pull request?

If an answer could materially change product behavior, ownership, authority, or scope, surface it and pause for alignment. Otherwise state the assumption and continue.

Select the delivery path and isolated worktree

Supply credentials through the environment described in docs/project-management.md. Plan the complete startup, review the result, then apply a freshly recomputed plan:

npm run issue:start -- --issue <number> --json
npm run issue:start -- --issue <number> --apply --json

The command refreshes/prunes remote refs, reads the normalized issue, parent, expected base, deterministic branch and worktree, planning state, and open PRs, conservatively reconciles prior workflow-owned issue worktrees, creates or reuses the selected worktree, and prepares locked dependencies. Planning changes only remote-tracking refs. Apply retains partial or ambiguous state with reasons and never mutates Project membership or Kind. Successful apply sets Status to In Progress through its existing owner.

Read the full file on GitHub · 190 lines

Files

What ships with it

3 files 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. today Changed · +4 lines ed36151b9856
  2. 9d ago First seen · 186 lines · 81 tokens per session scan A 784a2cbc5bf9

Subscribe to this mod's changes

hvir-implement-issue is a skill published in the GitHub repository jarmak-personal/hvir (2 stars, last pushed today), licensed MIT. It adds 81 tokens to every session and 2,283 once invoked, about $0.0004 per session on Opus 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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