agentmods.dev

agent-conventions

agent-conventions is a skill for Claude Code from wyattowalsh/agents. It costs 35 tokens per session (999 once invoked), scanned A, original, MIT.

A rule checker and scaffolding guide for AI agent definition files. It validates required metadata and keeps agent indexes up to date when agents are created or changed.

In plain words
What is it for?
Use it when creating or modifying agents, checking their frontmatter, generating a new agent file, or validating agent conventions.
Why use it?
It reduces configuration mistakes and keeps agent definitions consistent across a project.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Codex.

Part of the agents plugin — 71 skills, 20 agents, 5 hooks shipped together

not rated 5repo 4d ago A scan 35 tokens original MIT

Good fit Use it when creating or modifying agents, checking their frontmatter, generating a…

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Install with agentmods
npx agentmods add skills/wyattowalsh/agents/agent-conventions
View source ↗ wyattowalsh/agents agents.w4w.dev
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.

Any agent
npx skills add wyattowalsh/agents --skill agent-conventions
Clone the repo
git clone --depth 1 https://github.com/wyattowalsh/agents

Made for: Claude Code.

Or install agents, the plugin that ships this one along with the rest of its 71 skills, 20 agents, 5 hooks.

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-conventions

README.md
[![agentmods](https://agentmods.dev/badge/skills/wyattowalsh/agents/agent-conventions.svg)](https://agentmods.dev/skills/wyattowalsh/agents/agent-conventions)
Your own site
<a href="https://agentmods.dev/skills/wyattowalsh/agents/agent-conventions"><img src="https://agentmods.dev/badge/skills/wyattowalsh/agents/agent-conventions.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 999 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 $0.00035 $0.00999
Opus 5 $0.00017 $0.00500
Sonnet 5 $0.00007 $0.00200
Haiku 4.5 $0.00003 $0.00100

Measured 6d ago against content hash 72cdfeb76126, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

agent-conventions 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 6d ago.

The scan reads SKILL.md. This mod also ships 11 executable files (scripts/asset_toolkit/__init__.py, scripts/asset_toolkit/_shared.py, scripts/asset_toolkit/common.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/agent-conventions/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Conventions

Apply these conventions when creating or modifying AI agent definitions.

Dispatch

$ARGUMENTS Action
Active (auto-invoked when working on agent files) Apply all conventions below
Empty Display convention summary
check Run validation checks only

References

File Purpose
references/readme-template.md Template for agent README.md index entries

Scaffolding

Create new agent definitions with:

python skills/agent-conventions/scripts/scaffold_agent.py <name>

Conventions

Required Frontmatter

Every agent file must include these fields in YAML frontmatter:

  • name -- kebab-case, must match filename without .md
  • description -- non-empty, describes the agent's purpose

Optional Frontmatter

  • tools -- comma-separated tool allowlist (default: all)
  • disallowedTools -- comma-separated tool denylist
  • model -- sonnet | opus | haiku | inherit (default: inherit)
  • permissionMode -- default | acceptEdits | delegate | dontAsk | bypassPermissions | plan
  • maxTurns -- integer cap on agentic turns
  • skills -- list of skills preloaded into agent context
  • mcpServers -- list of MCP servers available to this agent
  • memory -- user | project | local
  • hooks -- lifecycle hooks scoped to this agent

Memory field conventions:

  • Choose the narrowest memory scope: local for temporary insights, project for shared patterns, user for cross-project preferences
  • Keep memory entrypoint files under 200 lines — content beyond this is truncated at load time
  • Organize memory by topic (e.g., debugging.md, api-patterns.md), not chronologically
  • Use MEMORY.md as the index file; create separate topic files for detailed notes

Naming

  • All agent names use kebab-case: ^[a-z0-9][a-z0-9-]*$
  • Filename (without .md) must match the name frontmatter field exactly
  • No consecutive hyphens, no leading/trailing hyphens

Read the full file on GitHub · 120 lines

Files

What ships with it

15 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. 6d ago First seen · 120 lines · 35 tokens per session scan A 72cdfeb76126

Subscribe to this mod's changes

agent-conventions is a skill published in the GitHub repository wyattowalsh/agents (5 stars, last pushed 4d ago), licensed MIT. It adds 35 tokens to every session and 999 once invoked, about $0.0002 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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