> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-apis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-apis/accessing-os-apis/os-ngd-api-tiles/technical-specification/tiles.md).

# Tiles

## GET /collections/{collectionId}/tiles/{tileMatrix}/{tileRow}/{tileCol}

> Retrieve a vector tile from a collection for Web Mercator Quad EPSG: 3857 tile matrix set.

```json
{"openapi":"3.0.1","info":{"title":"OS NGD API - Tiles","version":"v1.8"},"servers":[{"description":"NGD OGC API - Tiles server","url":"https://api.os.uk/maps/vector/ngd/ota/v1"}],"security":[{"api-key":[],"api-key-header":[],"oauth2":[]}],"components":{"securitySchemes":{"api-key":{"type":"apiKey","name":"key","in":"query"}},"schemas":{"AllCollections":{"enum":["ngd-base","asu-bdy","wtr-ctch","trn-ntwk-railway","wtr-tidalboundary"],"type":"string"},"exceptionDto":{"description":"JSON schema for exceptions based on RFC 7807","properties":{"type":{"type":"string"},"title":{"type":"string"},"status":{"type":"integer"},"detail":{"type":"string"},"instance":{"type":"string"},"code":{"type":"integer"},"description":{"type":"string"},"help":{"type":"string"}},"required":["type"],"title":"Exception Schema","type":"object"}}},"paths":{"/collections/{collectionId}/tiles/{tileMatrix}/{tileRow}/{tileCol}":{"get":{"operationId":"3857.collection.vector.getTile","parameters":[{"description":"Identifier selecting one of the scales defined in the TileMatrixSet and representing the scaleDenominator the tile.","in":"path","name":"tileMatrix","required":true,"schema":{"type":"string"}},{"description":"Row index of the tile on the selected TileMatrix.","in":"path","name":"tileRow","required":true,"schema":{"minimum":0,"type":"integer"}},{"description":"Column index of the tile on the selected TileMatrix.","in":"path","name":"tileCol","required":true,"schema":{"minimum":0,"type":"integer"}},{"description":"Local identifier of a collection","in":"path","name":"collectionId","required":true,"schema":{"$ref":"#/components/schemas/AllCollections"}}],"responses":{"200":{"content":{"application/octet-stream":{"schema":{"format":"binary","type":"string"}}},"description":"A vector tile returned as a response."},"400":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"The request was not supported."},"404":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"The requested resource does not exist on the server. For example, a path parameter had an incorrect value."},"405":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"The HTTP method requested is not supported. This endpoint only supports 'GET' requests."},"406":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"A request header value was not supported."},"500":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"A server error occurred."},"504":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/exceptionDto"}}},"description":"Gateway Timeout."}},"summary":"Retrieve a vector tile from a collection for Web Mercator Quad EPSG: 3857 tile matrix set.","tags":["Vector Tiles"]}}}}
```


---

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