agent-description

agent-description is an agent for coding agents from pdugan20/claudelint. It costs 9 tokens per session (314 once invoked), scanned A, original, MIT.

A validation rule for agent descriptions written in Markdown frontmatter, the metadata block at the top of an agent file. It requires the description to contain at least 10 characters.

In plain words
What is it for?
Use it when checking agent files before they are accepted. It helps enforce clear trigger descriptions, including descriptions that use XML-style example or commentary tags.
Why use it?
It prevents descriptions that are too short to explain an agent’s purpose or when it should be used.

Agent

Part of the claudelint plugin — 15 skills, 2 commands, 15 agents, 1 hook, 2 MCP servers, 1 plugin shipped together

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.

agentmods
npx agentmods add agents/pdugan20/claudelint/agent-description
Clone the repo
git clone --depth 1 https://github.com/pdugan20/claudelint

Or install claudelint, the plugin that ships this one along with the rest of its 15 skills, 2 commands, 15 agents, 1 hook, 2 MCP servers, 1 plugin.

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 agent-description

README.md
[![agentmods](https://agentmods.dev/badge/agents/pdugan20/claudelint/agent-description.svg)](https://agentmods.dev/agents/pdugan20/claudelint/agent-description)
Your own site
<a href="https://agentmods.dev/agents/pdugan20/claudelint/agent-description"><img src="https://agentmods.dev/badge/agents/pdugan20/claudelint/agent-description.svg" alt="Measured on agentmods" height="20"></a>
Per session 9 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 314 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00009 $0.00314
Opus 5 $0.00005 $0.00157
Sonnet 5 $0.00002 $0.00063
Haiku 4.5 $0.00001 $0.00031

Measured 4d ago against content hash 72f31acfed73, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-description 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 4d 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.

website/rules/agents/agent-description.md · 55 lines

What it actually says

agent-description

Rule Details

This rule enforces a minimum length on the description field in agent markdown frontmatter. The description must be at least 10 characters. Validation is delegated to the AgentFrontmatterSchema.shape.description Zod schema. Agent descriptions may include XML-style tags like <example> and <commentary> which are conventional for trigger matching.

Incorrect

Agent description that is too short

---
name: code-review
description: Reviews
---

Correct

Descriptive agent description

---
name: code-review
description: Handles code reviews for pull requests and suggests improvements
---

How To Fix

Write a description of at least 10 characters that clearly explains what the agent does and when it should be triggered.

Options

This rule does not have any configuration options.

Resources

Version

Available since: v0.2.0

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. 4d ago First seen · 55 lines · 9 tokens per session scan A 72f31acfed73

Subscribe to this mod's changes

agent-description is an agent published in the GitHub repository pdugan20/claudelint (11 stars, last pushed 5d ago), licensed MIT. It adds 9 tokens to every session and 314 once invoked, about $0.0000 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 2026-08-30.

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