agentmods.dev

agent-smith CLAUDE.md

agent-smith CLAUDE.md is an instructions file for coding agents from supernova-labs/agent-smith. It costs 462 tokens per session, scanned A, original, MIT.

Repository instructions for Agent Smith, a shared skill distributed to Claude Code, Codex, and Cursor. They define how its plugin packages, marketplace listings, versions, indexes, and validation must agree.

In plain words
What is it for?
Use them when developing, packaging, validating, or releasing Agent Smith plugins and their marketplace entries.
Why use it?
They keep the same skill source and metadata consistent across different coding-agent systems. They also ensure unavailable runtime tests are reported accurately instead of being treated as passed.

Instructions file

not rated 9 1mo ago A scan 462 tokens original MIT
View the source file supernova-labs/agent-smith
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 instructions/supernova-labs/agent-smith/claude-md
Clone the repo
git clone --depth 1 https://github.com/supernova-labs/agent-smith

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-smith CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/supernova-labs/agent-smith/claude-md.svg)](https://agentmods.dev/instructions/supernova-labs/agent-smith/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/supernova-labs/agent-smith/claude-md"><img src="https://agentmods.dev/badge/instructions/supernova-labs/agent-smith/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 462 This file is loaded in full into every session.
When invoked 462 The same file — it is already loaded in full.
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 $0.00462 $0.00462
Opus 5 $0.00231 $0.00231
Sonnet 5 $0.00092 $0.00092
Haiku 4.5 $0.00046 $0.00046

Measured 4d ago against content hash a1a6c9f3d522, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

agent-smith CLAUDE.md 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.

CLAUDE.md · 43 lines

How it starts

The opening of the file, as written. The whole thing — 43 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent Smith — Development Guide

This repository distributes the same Agent Smith skill to Claude Code, Codex, and Cursor.

Invariants

  • agent-smith/skills/agent-smith/ is the single canonical skill source.
  • Root marketplace manifests for Claude, Codex, and Cursor all resolve to agent-smith/.
  • Native plugin manifests live under agent-smith/ and consume the same skill tree.
  • All plugin manifests must agree on name and version.
  • agent-smith/skills/agent-smith/SKILL.md must use portable frontmatter and stay below 500 lines.
  • Harness-specific formats belong in references, templates, or manifests rather than the shared workflow.
  • .agent-smith/index.json uses schema 2.0 and must cover every component/target pair.
  • Validation must report unavailable runtime smoke tests as not run, not passed.

Important paths

  • .claude-plugin/marketplace.json — Claude marketplace catalog
  • .agents/plugins/marketplace.json — Codex marketplace catalog
  • .cursor-plugin/marketplace.json — Cursor marketplace catalog
  • agent-smith/ — installable plugin package shared by all catalogs
  • agent-smith/skills/agent-smith/SKILL.md — portable workflow
  • agent-smith/skills/agent-smith/references/ — architecture and harness references
  • agent-smith/skills/agent-smith/scripts/ — deterministic inspection, migration, and validation
  • agent-smith/skills/agent-smith/references/templates/ — portable and harness-specific templates
  • tests/ — isolated repository fixtures and regression tests

Validation

bash agent-smith/skills/agent-smith/scripts/validate.sh
python3 -m unittest discover -s tests -v

For runtime verification, load or install the repository separately in Claude Code, Codex, and Cursor. Authentication-dependent checks are release requirements but must remain distinct from structural validation.

Releases

  • Keep all three plugin manifest versions synchronized.
  • Update CHANGELOG.md for every release.
  • Validate the repository before tagging.
  • Record structural and runtime results for all targets.

Read the full file on GitHub · 43 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. 4d ago First seen · 43 lines · 462 tokens per session scan A a1a6c9f3d522

Subscribe to this mod's changes

agent-smith CLAUDE.md is an instructions file published in the GitHub repository supernova-labs/agent-smith (9 stars, last pushed 1mo ago), licensed MIT. It adds 462 tokens to every session, about $0.0023 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.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,104 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,182 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,345 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens

next.js AGENTS.md

Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens