mitmdump -s capture-graphql.py

capture-graphql.py

# mitmdump -s capture-graphql.py
import json
import re

from mitmproxy import http

def response(flow: http.HTTPFlow) -> None:
  if flow.request.url.endswith('/graphql'):
    payload = json.loads(flow.request.content.decode('utf-8'))
    filename = re.sub(r'[^a-zA-Z0-9]', '_', payload['operationName']) + '.graphql.txt'
    with open(filename, 'w') as f:
      json.dump(payload, fp=f, indent=2)
      f.write(f"\n\n// ==== REQUEST ====\n\n")
      f.write(f"{payload['query']}\n\n")
      f.write("// ==== RESPONSE ====\n\n")
      json.dump(json.loads(flow.response.content), fp=f, indent=2)