Borrowing it
Nothing to install: this file belongs to scylladb/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.
curl -O https://raw.githubusercontent.com/scylladb/agent-skills/main/AGENTS.mdgit clone --depth 1 https://github.com/scylladb/agent-skillsWrote 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.
[](https://agentmods.dev/instructions/scylladb/agent-skills/agents-md)<a href="https://agentmods.dev/instructions/scylladb/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/scylladb/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.
<a href="https://agentmods.dev/instructions/scylladb/agent-skills/agents-md"><img src="https://agentmods.dev/badge/instructions/scylladb/agent-skills/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.02671 | $0.02671 |
| Opus 5.5 | $0.01068 | $0.01068 |
| Sonnet 5.5 | $0.00534 | $0.00534 |
| Haiku 4.5 | $0.00267 | $0.00267 |
Grade A, and why
agent-skills AGENTS.md scanned grade A 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 yesterday.
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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **Link to the Markdown version of a docs page, not the HTML page.** Every page on `*.docs.scylladb.com` is also served as Markdown. Replace `.html` with `.md`, and use `index.md` for a directory URL. Check each link wi How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
Guidance to AI coding agents that create or edit skills in this repository. Human contributors should read CONTRIBUTING.md too.
Skills follow the Agent Skills specification. This file adds the conventions specific to this repository.
Repository layout
skills/
scylladb/ # parent skill: overview and map of the other skills
SKILL.md
scylladb-<topic>/
SKILL.md # required: frontmatter + instructions
references/ # optional: detail loaded on demand
<topic>.md
.claude-plugin/ # Claude Code plugin + marketplace manifests
.cursor-plugin/ # Cursor plugin + marketplace manifests
tests/validate-skills.sh # local validation
.github/ # CI validation of changed skills
skills/ is the only source of skill content. Both plugin manifests point at ./skills/, so never copy skill files anywhere else.
Naming
- Directory name:
scylladb-<topic>, kebab-case. Example:scylladb-vector-search. The one exception is the parent skill,scylladb(see "The parent skill" below). - The frontmatter
namemust equal the directory name exactly. name: 1-64 characters, lowercase letters, digits, and single hyphens. No leading, trailing, or double hyphens.- The skill file is always
SKILL.md(uppercase). - Reference files: kebab-case
.md, named after the topic. In skills that group references (seescylladb-data-modeling), prefix with the group:antipattern-hot-partitions.md,pattern-bucketing.md.
Frontmatter
Use only name and description. Do not add other fields unless the specification defines them and there is a clear reason.
---
name: scylladb-<topic>
description: <What the skill does, one sentence>. Use this skill when <the situations where the agent should load it>. Triggers on "<phrase>", "<phrase>", "<phrase>".
---
The description is the only part of the skill the agent sees before it decides to load the skill. Write it so that the agent loads the skill at the right time:
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.
- yesterday First seen · 164 lines · 2,671 tokens per session scan A 112f5d88c796
agent-skills AGENTS.md is an instructions file published in the GitHub repository scylladb/agent-skills (7 stars, last pushed today), licensed Apache-2.0. It adds 2,671 tokens to every session, about $0.0107 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-16.
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).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
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.
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).