claude-code-marketplace: Instructions file for Codex

AGENTS.md

claude-code-marketplace AGENTS.md is an instructions file for Codex, OpenCode from netresearch/claude-code-marketplace. It costs 2,546 tokens per session, scanned A, original, MIT.

Project instructions for maintaining a marketplace that catalogs Claude Code skills and plugins. It separates the marketplace's discovery content from the implementation rules in each skill repository.

In plain words
What is it for?
Use it when editing the catalog, categories, install links, related-skill links, SEO text, or marketplace validation scripts.
Why use it?
It prevents marketplace listings, landing pages, and search-focused text from being mixed with the runtime instructions that skills follow.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions .claude-plugin; mentions Claude Code; mentions AGENTS.md.

This is netresearch/claude-code-marketplace's own configuration. It tells Codex and OpenCode how to work on claude-code-marketplace 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 claude-code-marketplace configures →

Reuse

Borrowing it

Nothing to install: this file belongs to netresearch/claude-code-marketplace. 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/netresearch/claude-code-marketplace/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/netresearch/claude-code-marketplace

Made for: Codex, OpenCode.

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.

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README.md
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Your own site
<a href="https://agentmods.dev/instructions/netresearch/claude-code-marketplace/agents-md"><img src="https://agentmods.dev/badge/instructions/netresearch/claude-code-marketplace/agents-md/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.

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Your own site · 80×15
<a href="https://agentmods.dev/instructions/netresearch/claude-code-marketplace/agents-md"><img src="https://agentmods.dev/badge/instructions/netresearch/claude-code-marketplace/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,546 This file is loaded in full into every session.
When invoked 2,546 The same file — it is already loaded in full.
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 $0.02546 $0.02546
Opus 5.5 $0.01018 $0.01018
Sonnet 5.5 $0.00509 $0.00509
Haiku 4.5 $0.00255 $0.00255

Measured 8d ago against content hash 1d5e93b86af9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-code-marketplace AGENTS.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 8d 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.

AGENTS.md · 167 lines

How it starts

The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Netresearch Claude Code Marketplace

Rules for coding agents editing netresearch/claude-code-marketplace.
They apply to marketplace maintenance only: catalog, landing pages, SEO presentation, cross-linking, and aggregation.

Precedence: rules are additive — scoped files extend this root policy, and on conflict the closest AGENTS.md to the files you're changing wins. See the scope index below.

Do not copy skill-repository quality rules here. Those live in netresearch/skill-repo-skill (skill-repo skill). Do not duplicate runtime instructions from individual SKILL.md files — the marketplace describes how skills are found and presented, not how they execute.


Commands

Task Command
Validate marketplace.json + README catalog ./scripts/validate.sh
Advisory catalog overlap report (non-blocking) python3 scripts/overlap-report.py

Scope separation (mandatory)

Layer Responsibility
This marketplace repository Public discovery hub: catalog, categories, landing/install URLs, related skills, SEO-facing copy, internal linking structure.
Each skill repository Source for skill-specific docs: README.md, SKILL.md (runtime behavior), agents/openai.yaml, examples, expected outputs, context requirements, GitHub topics/description.
SKILL.md in a skill repo Runtime behavior for the agent when the skill is loaded. Not the home for marketplace SEO metadata or extended discovery fields in YAML frontmatter.

Marketplace as canonical discovery hub

  • The Netresearch Claude Code Marketplace is the canonical public discovery hub for Netresearch Agent Skills distributed through this plugin.
  • Every listed skill must have a stable, publicly understandable presentation (what problem it solves, for whom, how to install).
  • The marketplace owns: catalog structure, categories, landing pages, installation paths, cross-links, Related Skills, and SEO-oriented listing copy (titles, summaries, indexable detail pages).
  • The marketplace does not define runtime behavior of skills. Execution semantics, triggers, and procedural detail stay in each skill repo’s SKILL.md and referenced files.

Read the full file on GitHub · 167 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. 8d ago Changed · +1 lines · +57 tokens per session 1d5e93b86af9
  2. 11d ago Changed · +43 tokens per session 44246db2e67e
  3. 1mo ago Changed · +2 lines · +20 tokens per session a4fb033490bf
  4. 1mo ago Changed · +1 lines · +118 tokens per session 2e82299b041f
  5. 2mo ago Changed · +1 lines · +60 tokens per session 99e478baf3c2
  6. 2mo ago First seen · 162 lines · 2,248 tokens per session scan A ee769358b120

Subscribe to this mod's changes

claude-code-marketplace AGENTS.md is an instructions file published in the GitHub repository netresearch/claude-code-marketplace (87 stars, last pushed 9d ago), licensed MIT. It adds 2,546 tokens to every session, about $0.0102 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 2026-08-30.

Related

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claude-code-marketplace AGENTS.md next to 6 instructions from other repositories
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deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode