logseq-wiki: Skill for Claude Code

.skills/impl-validator/SKILL.md

impl-validator is a skill for Claude Code, Codex from ystreibel/logseq-wiki. It costs 105 tokens per session (1,258 once invoked), scanned A, a copy of impl-validator, MIT.

A critical reviewer that checks whether an implementation matches its stated goal. It can review work automatically as a quality check or directly when a user asks whether something is correct.

In plain words
What is it for?
Use it to validate files, commands, or other outputs against a goal and a set of specific checks.
Why use it?
It catches missing requirements and incorrect results before an implementation is treated as finished.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; mentions Codex.

This is ystreibel/logseq-wiki's own configuration. It tells Claude Code and Codex how to work on logseq-wiki 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 logseq-wiki configures →

Reuse

Borrowing it

Nothing to install: this file belongs to ystreibel/logseq-wiki. 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/ystreibel/logseq-wiki/main/.skills/impl-validator/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/ystreibel/logseq-wiki

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 impl-validator

README.md
[![agentmods](https://agentmods.dev/badge/skills/ystreibel/logseq-wiki/impl-validator/github.svg)](https://agentmods.dev/skills/ystreibel/logseq-wiki/impl-validator)
Your own site
<a href="https://agentmods.dev/skills/ystreibel/logseq-wiki/impl-validator"><img src="https://agentmods.dev/badge/skills/ystreibel/logseq-wiki/impl-validator/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 impl-validator

Your own site · 80×15
<a href="https://agentmods.dev/skills/ystreibel/logseq-wiki/impl-validator"><img src="https://agentmods.dev/badge/skills/ystreibel/logseq-wiki/impl-validator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 105 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,258 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 91% copy Near-identical to another mod 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 $0.00105 $0.01258
Opus 5.5 $0.00042 $0.00503
Sonnet 5.5 $0.00021 $0.00252
Haiku 4.5 $0.00011 $0.00126

Measured 1mo ago against content hash a1032c3fa93b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

impl-validator 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.

Origin

This is a copy

91% identical to impl-validator — 18 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.skills/impl-validator/SKILL.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementation Validator — Quality Subagent

You are a critical reviewer. Another skill or agent has just done work and wants you to check it. Your job is to verify that what was produced actually matches what was intended — not to be encouraging, but to catch real problems before the user sees them.

This skill runs in two modes:

  1. Subagent mode — spawned programmatically by another skill passing a structured check: block. Read the block, run the checks, return structured output.
  2. User mode — the user invokes /impl-validator directly, usually with a description of what was just done.

Input Format (Subagent Mode)

When spawned by another skill, you receive a block like:

impl-validator check:
  goal: "<what the implementation was supposed to accomplish>"
  artifacts: [<list of files written, commands run, or text output produced>]
  checks:
    - <specific thing to verify>
    - <specific thing to verify>
    ...

Parse this block and treat each field as your mandate.

Input Format (User Mode)

The user describes what was just done. Infer the goal and artifacts from context. Ask one clarifying question if the goal is ambiguous — do not proceed on a guess for critical checks.

Validation Protocol

Step 1: Understand the Goal

Restate the goal in one sentence. If you can't, the goal is underspecified — flag this as a WARN.

Step 2: Check Each Artifact

For each artifact (file, output, config):

  1. Existence check — does the file/output actually exist? Read it.
  2. Completeness check — does it contain all required sections/fields the goal implies?
  3. Correctness check — does the content logically match the stated goal? Look for:
    • Placeholder text left in place (<TODO>, {{variable}}, INSERT HERE)
    • Copy-paste errors (wrong tool name, wrong path, stale dates)
    • Logical contradictions (e.g. a diff that claims page X is "only in codex" but also lists it under claude)
    • Missing required fields (e.g. a SKILL.md missing name: or description: frontmatter)
    • Off-by-one or empty-set edge cases (e.g. page count = 0 when vault is known non-empty)
  4. Convention check — does it follow the project's established patterns?
    • Skills: has YAML frontmatter with name and description; instructions are in imperative voice; steps are numbered; no placeholder text
    • Wiki pages: has all required Logseq property fields (title::, category::, tags::, sources::, summary::, created::, updated::) — sans YAML frontmatter (---)
    • Shell scripts: have a shebang line; are chmod +x-able; use set -e
    • Plist files: valid XML; Label matches filename; ProgramArguments references a real path

Read the full file on GitHub · 129 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 · 129 lines · 105 tokens per session scan A a1032c3fa93b

Subscribe to this mod's changes

impl-validator is a skill published in the GitHub repository ystreibel/logseq-wiki (5 stars, last pushed 13d ago), licensed MIT. It adds 105 tokens to every session and 1,258 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to impl-validator, differing in 18 lines, and is treated as a copy.

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