kafka-consumer-tests SKILL.md skillA
kafka-consumer-tests from testland/qa is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add testland/qa/kafka-consumer-tests@git:20260728.1bce424Pins git:20260728.1bce424 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- testland/qa
- Path
plugins/qa-async-jobs/skills/kafka-consumer-tests/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260728.1bce424, committed Jul 28, 2026
- First version recorded
- Jun 4, 2026
- Size
- 15,559 bytes
- Repository stars
- 11
- License
- MIT
Tests Apache Kafka consumer and producer logic across KafkaJS (Node.js), kafka-go (Go), and Spring Kafka (Java) - spins up a real broker via the Testcontainers Kafka module, asserts offset management and consumer-group rebalance behavior, distinguishes at-least-once from exactly-once (EOS / transactions), validates idempotent producer configuration, and routes unprocessable messages to a dead-letter topic. Use when the user works with Kafka producers or consumers in any language and needs…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# kafka-consumer-tests
## Overview
Kafka uses consumer-owned committed offsets as its delivery primitive
(unlike SQS visibility-timeout, RabbitMQ ack/nack, or BullMQ
job-state) - every test must control where the read position is. This
skill covers that model: offset management, consumer-group rebalance,
at-least-once vs exactly-once (EOS / transactions), idempotent
producer, and dead-letter routing across KafkaJS (Node.js), kafka-go
(Go), and Spring Kafka (Java).
## Step 1 - Spin up Kafka with Testcontainers
Per [testcontainers.com/modules/kafka][tc-kafka]:
[tc-kafka]: https://testcontainers.com/modules/kafka/
**Node.js / TypeScript**
```bash
npm install @testcontainers/kafka --save-dev
```
```typescript
import { KafkaContainer } from '@testcontainers/kafka';
let container: Awaited<ReturnType<KafkaContainer['start']>>;
beforeAll(async () => {
container = await new KafkaContainer('confluentinc/cp-kafka:7.2.2').start();
});
afterAll(async () => {
await container.stop();
});
function brokers(): string[] {
return [`${container.getHost()}:${container.getMappedPort(9093)}`];
}
```
Per [node.testcontainers.org/modules/kafka][node-tc-kafka], the
…Read the whole file at its exact version.
How to install
mdr add testland/qa/kafka-consumer-tests@sha256:2ea2010ea644fce5The line at the top of this page pins the label git:20260728.1bce424, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_sj2oda7e7ed3doey)
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Versions
The registry has recorded 5 versions of this file, between Jun 4, 2026 and Jul 28, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260728.1bce424 latest | 2026-07-28 | 1bce424 | 15,559 B | A | view · diff |
| git:20260724.d4db756 | 2026-07-24 | d4db756 | 17,621 B | A | view · diff |
| git:20260720.22d020c | 2026-07-20 | 22d020c | 17,782 B | A | view · diff |
| git:20260706.4e1409c | 2026-07-06 | 4e1409c | 17,794 B | A | view · diff |
| git:20260604.1250cd5 | 2026-06-04 | 1250cd5 | 17,811 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15559 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
testland/qa · 11 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_sj2oda7e7ed3doey GET https://markdownregistry.com/api/v1/resolve?ref=testland/qa/kafka-consumer-tests GET https://markdownregistry.com/api/v1/blob/2ea2010ea644fce526377606fde2153f838d848e03eba388fc72c5dde4f993d4
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