What is agent-skills AGENTS.md?

Repository instructions in an AGENTS.md file for the MaterializeInc/agent-skills project. They describe the project, its folders, its skills, and how agents should work with them.

Orienting an agent in the repository, finding its structure and available skills, and following the project’s agent instructions.

They give coding agents the project-specific context and working rules needed to make appropriate changes.

How MaterializeInc/agent-skills configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to MaterializeInc/agent-skills. 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/MaterializeInc/agent-skills/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/MaterializeInc/agent-skills

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/materializeinc/agent-skills/agents-md/github.svg)](https://agentmods.dev/instructions/materializeinc/agent-skills/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/materializeinc/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/materializeinc/agent-skills/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/materializeinc/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/materializeinc/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,497 This file is loaded in full into every session.

When invoked 2,497 The same file — it is already loaded in full.

Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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	$0.02497	$0.02497
Opus 5.5	$0.00999	$0.00999
Sonnet 5.5	$0.00499	$0.00499
Haiku 4.5	$0.00250	$0.00250

Measured 7d ago against content hash e31562a668a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

agent-skills AGENTS.md scanned grade B with 1 finding 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 7d 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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

ls ~/.claude/skills/mz-docs/SKILL.md

AGENTS.md · 227 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

7d ago Changed · -19 lines · -250 tokens per session e31562a668a9
1mo ago Changed · +16 tokens per session 1c99a8fd6726
1mo ago Changed · +1 lines · +42 tokens per session fb3c7d2fcec9
1mo ago Changed · +7 lines · +229 tokens per session 34e998249610
1mo ago Changed · +3 lines · +168 tokens per session 037531252a32
2mo ago Changed · +4 lines · +82 tokens per session 2bfda33e0cad
2mo ago First seen · 231 lines · 2,210 tokens per session scan B ba89cdad5582

Subscribe to this mod's changes

agent-skills AGENTS.md is an instructions file published in the GitHub repository MaterializeInc/agent-skills (3 stars, last pushed yesterday), with no licence file. It adds 2,497 tokens to every session, about $0.0100 per session on Opus 5.5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

agent-skills AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
agent-skills AGENTS.mdMaterializeInc/agent-skills	Instructions file	3	yesterday	none	B	2,497	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,649	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
vscode ai-customization.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	1,907	GitHub Copilot

agent-skills: Instructions file for Codex