Uploading files and URLs

Felt supports a myriad of formats, both as files and hosted URLs, up to a limit of 5GB. Check out the full list in our Help Center.

Uploading a URL

The easiest way of uploading data into a Felt map via the API is to import from a URL. Here's an example importing all the recent earthquakes from the USGS' live GeoJSON feed:

# Your API token and map ID should look like this:

curl -L \
  -X POST \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer ${FELT_API_TOKEN}" \
  "https://felt.com/api/v2/maps/${MAP_ID}/upload" \
  -d '{"import_url":"https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_hour.geojson", "name": "USGS Earthquakes"}'

Like maps, layers also have unique identifiers. Make sure to take note of them for subsequent calls, like styling a layer or removing it.

Uploading a file

Uploading a file is a single function call using the felt-python library.

Files aren't uploaded to the Felt app — instead, they're uploaded directly to Amazon S3. Therefore, creating a layer from a file on your computer is a two-step process:

1. Request an upload via the Felt API

Perform a POST request to receive an S3 presigned URL which you can later upload your files to:

r = requests.post(
        "Authorization": f"Bearer {api_token}",
        "Content-Type": "application/json",
    json={"name": "My new layer"},
assert r.ok
layer_id = r.json()["layer_id"]

presigned_upload = r.json()

2. Upload your file(s) to Amazon s3

# This code is a continuation of the previous Python code block
# and assumes you already have a "presigned_upload" variable

file_name = "<YOUR_FILE_WITH_EXTENSION>" # Example: regions.geojson

url = presigned_upload["url"]
presigned_attributes = presigned_upload["presigned_attributes"]
# A 204 response indicates that the upload was successful
with open(file_name, "rb") as file_obj:
    output = requests.post(
        # Order is important, file should come at the end
        files={**presigned_attributes, "file": file_obj},

Monitoring progress

You can check the upload status of a layer by querying it:

curl -L \
  "https://felt.com/api/v2/maps/${MAP_ID}/layers/{LAYER_ID}" \
  -H "Authorization: Bearer ${YOUR_API_TOKEN}"

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