---
title: "Get a specific mapping version"
method: GET
path: "/gateway/mapping-version/{gateway_topic}/{version_number}"
tags: ["Mapping Versions"]
---

# Get a specific mapping version

`GET /gateway/mapping-version/{gateway_topic}/{version_number}`

## Request

- Base URL: `https://api.quiva.ai`
- URL: `https://api.quiva.ai/gateway/mapping-version/{gateway_topic}/{version_number}`
- Auth: one of:
  - HTTP bearer
  - API key in header `x-api-key`
- TypeScript: <https://skmtc.dev/quivaworks/apis/quiva-ai-gateway-4/docs/gateway/mapping-version/:gateway_topic/:version_number/get.ts> (a function with typed inputs; its response is checked against the schema)

Retrieves information about a specific mapping version.

## Path parameters

- `gateway_topic` string, required
- `version_number` integer, required

## Query parameters

- `method` 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH' | 'OPTIONS' | 'HEAD', required
- `path` string, required

## Response `200`

Mapping version details retrieved successfully

- MappingVersionResponseWrapper
  - `body` MappingVersionResponse
    - `subject` string: Subject identifier of the mapping version
    - `resource_type` string: Type of resource that handles requests
    - `resource` string: Resource identifier that handles requests
    - `resource_version` string: Version of the resource
    - `active` boolean: Whether the mapping version is active
    - `description` string: Description of the mapping version
    - `middleware` Middleware[]: List of middleware applied to the mapping version
      - `order` integer: Execution order of the middleware
      - `resource` string: Resource identifier for the middleware function
      - `resource_type` 'function' | 'service': Type of resource the middleware points to
      - `resource_version` string: Version of the middleware resource to use
      - `type` 'pre-request' | 'post-request': When the middleware should execute
    - `exact_match` boolean: Whether the path is matched exactly
    - `attributes` string[]: Attributes for the mapping version
    - `boolean_logic` string: Boolean logic expression for request routing
    - `invocation_type` string: Type of invocation for the resource
    - `version` integer: Version number
    - `modified` integer: Unix timestamp of when the mapping version was last modified
    - `type` string: Type of the mapping version record
  - `metadata` Metadata
    - `subject` string: Subject identifier for the resource

## Other responses

- `404`: Resource not found

---

[API](https://skmtc.dev/quivaworks/apis/quiva-ai-gateway-4.md) - [All operations](https://skmtc.dev/quivaworks/apis/quiva-ai-gateway-4/llms.txt) - [OpenAPI document](https://skmtc.dev/quivaworks/apis/quiva-ai-gateway-4/revisions/4915bc3902b1?raw)