What is kafka-backup CLAUDE.md?

A CLAUDE.md development guide for OSO Kafka Backup & Restore, a Rust tool that saves and restores Apache Kafka data.

Use it when developing the Kafka backup project, especially work involving cloud or local backups, point-in-time recovery, or consumer-group offsets.

It gives an AI coding assistant project context, including the problems the repository solves, its layout, and how to build and test it.

How osodevops/kafka-backup configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to osodevops/kafka-backup. 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/osodevops/kafka-backup/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/osodevops/kafka-backup

Made for: Claude Code.

Wrote this? Show the measurements

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README.md

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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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Per session 3,666 This file is loaded in full into every session.

When invoked 3,666 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.

Model	Per session	Once invoked
Fable 5.1	$0.03666	$0.03666
Opus 5.5	$0.01466	$0.01466
Sonnet 5.5	$0.00733	$0.00733
Haiku 4.5	$0.00367	$0.00367

Measured 24d ago against content hash cc090b1c2bcc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

kafka-backup 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 24d 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 · 432 lines

How it starts

The opening of the file, as written. The whole thing — 432 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md - Development Guide for OSO Kafka Backup & Restore

This document provides context for AI-assisted development on this project.

Project Overview

OSO Kafka Backup & Restore is a high-performance, production-grade tool written in Rust for backing up and restoring Apache Kafka topics to cloud storage or local filesystem. It supports point-in-time recovery (PITR) with millisecond precision and handles consumer group offset recovery across different clusters.

Key Problems Solved

Durable backup of Kafka topics to S3, Azure Blob, GCS, or local filesystem
Disaster recovery with exact data fidelity
Point-in-time restore (PITR) with millisecond precision
Consumer group offset recovery across different clusters (offset space discontinuity problem)
Deployment-agnostic: works on bare metal, VM, Docker, Kubernetes

Repository Structure

kafka-backup/
├── Cargo.toml                    # Workspace root
├── crates/
│   ├── kafka-backup-core/        # Core library (no K8s dependencies)
│   │   └── src/
│   │       ├── lib.rs            # Module exports
│   │       ├── backup/           # Backup engine
│   │       ├── restore/          # Restore engine + offset handling
│   │       ├── kafka/            # Kafka protocol client
│   │       ├── storage/          # Multi-backend storage abstraction
│   │       ├── segment/          # Record batching & serialization
│   │       ├── offset_store/     # SQLite-based offset tracking
│   │       ├── config.rs         # Configuration structures
│   │       ├── manifest.rs       # Backup manifest & reports
│   │       ├── compression.rs    # Compression algorithms
│   │       ├── error.rs          # Error types
│   │       ├── circuit_breaker.rs
│   │       ├── health.rs
│   │       └── metrics/          # Prometheus metrics
│   └── kafka-backup-cli/         # Binary CLI wrapper
│       └── src/
│           ├── main.rs           # CLI entry point
│           └── commands/         # Command implementations
├── config/                       # Config templates
└── docs/                         # Comprehensive documentation

Read the full file on GitHub · 432 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.

24d ago Changed · +1 lines · +34 tokens per session cc090b1c2bcc
2mo ago Changed · +2 lines · +51 tokens per session 23be3deebf82
2mo ago First seen · 429 lines · 3,581 tokens per session scan A c739da545c81

Subscribe to this mod's changes

kafka-backup CLAUDE.md is an instructions file published in the GitHub repository osodevops/kafka-backup (50 stars, last pushed 2d ago), licensed MIT. It adds 3,666 tokens to every session, about $0.0147 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.

gitops kafka kafka-backup kafka-client kafka-cluster kafka-consumer

kafka-backup CLAUDE.md next to 6 instructions from other repositories
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kafka-backup: Instructions file for Claude Code