A command that runs markdownlint, a checker for common Markdown formatting problems, on selected files or project directories.

Use it to check all project documentation or specific files, then report violations and suggest the command for automatically fixable problems.

It finds documentation formatting issues consistently instead of requiring manual inspection.

lint — Command for Claude Code by tslateman/duet

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.

Clone the repo

git clone --depth 1 https://github.com/tslateman/duet

Made for: Claude Code.

Or install duet, the plugin that ships this one along with the rest of its 27 skills, 6 commands, 1 agent.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/tslateman/duet/lint/github.svg)](https://agentmods.dev/commands/tslateman/duet/lint)

Your own site

<a href="https://agentmods.dev/commands/tslateman/duet/lint"><img src="https://agentmods.dev/badge/commands/tslateman/duet/lint/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/tslateman/duet/lint"><img src="https://agentmods.dev/badge/commands/tslateman/duet/lint.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 233 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.

Model	Per session	Once invoked
Fable 5.1	$0.00010	$0.00233
Opus 5.5	$0.00004	$0.00093
Sonnet 5.5	$0.00002	$0.00047
Haiku 4.5	$0.00001	$0.00023

Measured 1mo ago against content hash b964132a4fa4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

lint 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.

commands/lint.md · 40 lines

What it actually says

Lint

Context

Markdownlint config: !cat .markdownlint.json

Your Task

Run markdownlint on the target files and report results.

Arguments

${ARGUMENTS:-} — Three usage patterns:

No arguments — Lint all markdown files in the project
File path(s) — Lint specific files
Directory — Lint all .md files in that directory

Workflow

Determine targets:
- If arguments provided, use them
- Otherwise, lint commands/**/*.md and skills/**/*.md
Run markdownlint:
```
npx markdownlint-cli [targets]
```
Report results:
- If clean, report "No lint issues found"
- If violations found, group by file and list each issue
- For fixable issues, suggest npx markdownlint-cli --fix [file]

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.

1mo ago First seen · 40 lines · 10 tokens per session scan A b964132a4fa4

Subscribe to this mod's changes

lint is a command published in the GitHub repository tslateman/duet (1 stars, last pushed 1mo ago), licensed MIT. It adds 10 tokens to every session and 233 once invoked, about $0.0000 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.

Claude Code Git and workflow Productivity claude-code-plugin slash-commands workflow

quick

Quick execution mode for ad-hoc tasks without full workflow overhead.

nyldn/claude-octopus · 12 tokens

audit-release

Diagnose release-readiness against the Starter Series quality bar — matched starter, version-vs-last-tag drift, CHANGELOG drift vs merged PRs, and publish-workflow kind. Read-only.

starter-series/create-starter · 39 tokens

recap

Time-windowed "where was I?" — git commits, session notes, and files touched in the last N hours or days. Use after stepping away for a few hours or days. Not for cold starts after a long absence (use /tools:brief) or live development checks (use /tools:status).

gf-labs/claude-toolbox · 63 tokens

lint