AI Agent Skills by Confluent is a collection of skills for building Kafka producers, Flink applications, and real-time data-streaming pipelines. Developers use it with coding assistants when creating applications and pipelines on Confluent. The catalogue entries are its skills, plugin, and instruction.
Borrowing it
Nothing to install: this file belongs to confluentinc/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/confluentinc/agent-skills/main/CLAUDE.mdgit clone --depth 1 https://github.com/confluentinc/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/confluentinc/agent-skills/claude-md)<a href="https://agentmods.dev/instructions/confluentinc/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/confluentinc/agent-skills/claude-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/confluentinc/agent-skills/claude-md"><img src="https://agentmods.dev/badge/instructions/confluentinc/agent-skills/claude-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 | $0.01219 | $0.01219 |
| Opus 5.5 | $0.00488 | $0.00488 |
| Sonnet 5.5 | $0.00244 | $0.00244 |
| Haiku 4.5 | $0.00122 | $0.00122 |
Grade A, and why
agent-skills 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
Repository purpose
This repo packages a collection of AI agent skills for streaming/data-platform work on Confluent (Kafka producers/consumers, Kafka Streams, Schema Registry, Flink-based CDC to Tableflow). It is distributed as:
- A Claude Code plugin via
.claude-plugin/(marketplaceconfluent-agent-skills, pluginstreaming-skills-plugin). - A Cursor plugin via
.cursor-plugin/. - The
npx skills add confluentinc/agent-skillsCLI for other agents.
The "code" in this repo is mostly markdown — skill prompts, reference material, and eval definitions. There is no application to build or run.
Skill anatomy
Every skill lives under skills/<skill-name>/ with this layout:
skills/<skill-name>/
├── SKILL.md # Frontmatter (name, description) + body. Description gates triggering.
├── evals/evals.json # Prompts + expectations used to score the skill
├── references/ # Lazy-loaded markdown the SKILL.md tells the agent to read on demand
└── scripts/ # (optional) shell helpers the skill can invoke
Architectural conventions to preserve when editing:
- Lazy-load references. SKILL.md bodies are deliberately short and route the agent to
references/<topic>.mdonly when needed. Do not inline the contents of reference files into SKILL.md, and do not have SKILL.md instruct the agent to read all references upfront — see the explicit warning at the top ofskills/kafka-streams-programming/SKILL.md. New reference files should be reachable from a decision/mode section in SKILL.md, not loaded preemptively. - The
description:field is the trigger. It must include positive trigger phrases and explicit "Do NOT trigger for…" exclusions where adjacent skills could fight over the same prompt (see the kafka-streams and CDC-tableflow descriptions for the pattern). When adding/renaming a skill, audit neighboring skills' descriptions for overlap. - Mode detection. Larger skills (e.g.
kafka-streams-programming) branch internally into Build / Architect / Debug modes. Keep that table-driven structure when extending — don't fork mode logic into separate skills.
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.
- 2mo ago First seen · 80 lines · 1,219 tokens per session scan A f7a52a4707e5
agent-skills CLAUDE.md is an instructions file published in the GitHub repository confluentinc/agent-skills (61 stars, last pushed 11d ago), licensed Apache-2.0. It adds 1,219 tokens to every session, about $0.0049 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.
agent-skills CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agent-skills CLAUDE.mdconfluentinc/agent-skills | Instructions file | 61 | 11d ago | Apache-2.0 | A | 1,219 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |