---
title: "Get schema for a single topic"
method: GET
path: "/topics/catalog/schema"
tags: ["Topics"]
---

# Get schema for a single topic

`GET /topics/catalog/schema`

Lazy-fetch schema fields for a single topic (called on tree node expand).

## Query parameters

- `topic_id` string, nullable — Kafka topic name

## Response `200`

Successful Response

- KafkaTopicSchemaRes — Schema response for a single topic.
  - `topic_id` string, required
  - `schema_fields` object[], nullable
  - `schema_type` string, nullable

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/streamkap/apis/streamkap-rest-api.md) · [All operations](https://skmtc.net/streamkap/apis/streamkap-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/streamkap/streamkap-rest-api/revisions/e9ce8221bac6/schema)