Upload Supporting Document

# Build the JSON body in a file (avoids the shell command-length limit a
# multi-MB base64 string would hit, and guarantees single-line base64).
python3 -c 'import base64,json; open("payload.json","w").write(json.dumps({"filename":"ein.pdf","data":base64.b64encode(open("ein.pdf","rb").read()).decode()}))'

curl -X POST "https://api.tracklysms.com/api/v2/business-profiles/664a1b2c3d4e5f6071829300/documents" \
  -H "X-Api-Key: trk_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d @payload.json

import base64
import requests

with open("ein.pdf", "rb") as f:
    data = base64.b64encode(f.read()).decode()

resp = requests.post(
    "https://api.tracklysms.com/api/v2/business-profiles/664a1b2c3d4e5f6071829300/documents",
    headers={"X-Api-Key": "trk_your_api_key_here"},
    json={"filename": "ein.pdf", "data": data},
)
print(resp.json()["document"]["id"])