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.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add confluentinc/agent-skills --skill kafka-schema-registrygit 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/skills/confluentinc/agent-skills/kafka-schema-registry)<a href="https://agentmods.dev/skills/confluentinc/agent-skills/kafka-schema-registry"><img src="https://agentmods.dev/badge/skills/confluentinc/agent-skills/kafka-schema-registry/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/skills/confluentinc/agent-skills/kafka-schema-registry"><img src="https://agentmods.dev/badge/skills/confluentinc/agent-skills/kafka-schema-registry.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 | $0.00077 | $0.02271 |
| Opus 5 | $0.00039 | $0.01136 |
| Sonnet 5 | $0.00015 | $0.00454 |
| Haiku 4.5 | $0.00008 | $0.00227 |
Grade A, and why
kafka-schema-registry 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 11d 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.
This is a copy
97% identical to kafka-schema-registry — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kafka Schema Registry Skill
Scan a project to identify Kafka applications, extract schemas, generate Terraform for Schema Registry registration, and produce a comprehensive analysis report.
When to Use
Invoke this skill when:
- A user asks to analyze a project for Kafka usage in order to add event schemas or integrate Schema Registry
- A user wants to extract schemas from Kafka producers
- A user wants Terraform to register schemas to Schema Registry
- A user wants to audit Kafka producer/consumer configurations
Deliverables
This skill produces 3 outputs in the target project:
schema-report.md— Full analysis report with findings, risks, and upgrade recommendationsschemas/— Extracted schema files (Avro, JSON Schema, Protobuf) with PII taggingterraform/— Terraform configs using Confluent provider to register schemas
Optional: Code Migration Assistance
If the user asks for their application code to be updated to integrate Schema Registry, use the Code Migration Reference to update the code with proper Schema Registry integration patterns.
High-Level Workflow
Phase 0: Initialize
- Check for existing
schema.yamlandschemas/directory manually - Note any existing schema infrastructure in the report
Phase 1: Project Scan & Kafka Detection
- Find build files — Search for
pom.xml,build.gradle,requirements.txt,package.json, etc. - Detect Kafka dependencies — Look for
spring-kafka,confluent-kafka,kafkajs, etc. - Find producers & consumers — Grep for
KafkaTemplate,Producer(,producer.send, etc. - Extract topic names — From string literals, config properties, YAML files
- Identify serializers — Find
value.serializer,KafkaAvroSerializer, custom serializers - Build app catalog — Compile findings: app name, language, role, topics, serializer, category
Detailed patterns: Detection Patterns Reference
What ships with it
49 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- evals/evals.json 13 KB
- evals/mock-repos/acme-services/billing-service/pom.xml 477 B
- evals/mock-repos/acme-services/billing-service/src/main/java/com/acme/billing/Invoice.java 533 B
- evals/mock-repos/acme-services/inventory-service/requirements.txt 24 B
- evals/mock-repos/acme-services/inventory-service/src/producer.py 343 B runs code
- evals/mock-repos/acme-services/reporting-service/src/consumer.py 255 B runs code
- evals/mock-repos/acme-services/user-service/pom.xml 471 B
- evals/mock-repos/acme-services/user-service/src/main/java/com/acme/users/UserEvent.java 477 B
- evals/mock-repos/api-gateway/.env.example 96 B
- evals/mock-repos/api-gateway/package.json 148 B
- evals/mock-repos/api-gateway/src/middleware.js 395 B runs code
- evals/mock-repos/api-gateway/src/server.js 712 B runs code
- evals/mock-repos/ecommerce-platform/analytics-service/requirements.txt 44 B
- evals/mock-repos/ecommerce-platform/analytics-service/src/analytics_producer.py 676 B runs code
- evals/mock-repos/ecommerce-platform/notification-service/package.json 108 B
- evals/mock-repos/ecommerce-platform/notification-service/src/notification-producer.js 700 B runs code
- evals/mock-repos/ecommerce-platform/order-service/pom.xml 652 B
- evals/mock-repos/ecommerce-platform/order-service/src/main/java/com/ecommerce/orders/OrderEvent.java 1.1 KB
- evals/mock-repos/ecommerce-platform/order-service/src/main/java/com/ecommerce/orders/OrderProducer.java 980 B
- evals/mock-repos/go-kafka-producer/go.mod 97 B
- evals/mock-repos/go-kafka-producer/producer.go 1.7 KB
- evals/mock-repos/legacy-event-publisher/requirements.txt 20 B
- evals/mock-repos/legacy-event-publisher/src/event_publisher.py 1.2 KB runs code
- evals/mock-repos/notification-service/Models/UserNotification.cs 1.1 KB
- evals/mock-repos/notification-service/NotificationProducer.cs 1.2 KB
- evals/mock-repos/notification-service/NotificationService.csproj 294 B
- evals/mock-repos/order-processor/config.yaml 125 B
- evals/mock-repos/order-processor/requirements.txt 62 B
- evals/mock-repos/order-processor/src/models.py 396 B runs code
- evals/mock-repos/order-processor/src/producer.py 1.2 KB runs code
- evals/mock-repos/payment-service/pom.xml 1.1 KB
- evals/mock-repos/payment-service/src/main/java/com/example/payment/model/PaymentEvent.java 1.9 KB
- evals/mock-repos/payment-service/src/main/java/com/example/payment/producer/PaymentProducer.java 718 B
- evals/mock-repos/payment-service/src/main/resources/application.properties 237 B
- evals/mock-repos/streams-processor/pom.xml 840 B
- evals/mock-repos/streams-processor/src/main/java/com/example/streams/StreamsApp.java 1.2 KB
- evals/mock-repos/streams-processor/src/main/resources/application.properties 200 B
- evals/mock-repos/transaction-system/order-service/pom.xml 470 B
- evals/mock-repos/transaction-system/order-service/src/main/java/com/tx/orders/OrderCreatedEvent.java 691 B
- evals/mock-repos/transaction-system/order-service/src/main/java/com/tx/orders/OrderProducer.java 569 B
- evals/mock-repos/transaction-system/payment-service/pom.xml 472 B
- evals/mock-repos/transaction-system/payment-service/src/main/java/com/tx/payments/PaymentProcessedEvent.java 1.0 KB
- evals/mock-repos/transaction-system/payment-service/src/main/java/com/tx/payments/PaymentProducer.java 603 B
- references/categorization.md 4.4 KB
- references/code-migration.md 21 KB
- references/detection-patterns.md 5.0 KB
- references/report-template.md 6.4 KB
- references/schema-inference.md 8.0 KB
- references/terraform-templates.md 7.7 KB
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.
- 11d ago First seen · 247 lines · 77 tokens per session scan A 5cd9503c0b2e
kafka-schema-registry is a skill published in the GitHub repository confluentinc/agent-skills (56 stars, last pushed 8d ago), licensed Apache-2.0. It adds 77 tokens to every session and 2,271 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 97% identical to kafka-schema-registry, differing in 15 lines, and is treated as a copy.
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