# Python example pip install gemini-python python -c "from gemini import packbin; packbin.unpack('data.pb', 'output.json')" If this fails with EOFError or StructError , your download is still truncated. Return to and resume again. Advanced Troubleshooting for "Top" Level Errors If you have tried the above fixes and still face issues, you are dealing with edge cases. Here is how the top 1% of developers solve them: The 403 Forbidden "Top" Fix Sometimes, Gemini blocks IP ranges. Rotate your VPN or add a Referer header:
with open("output.pb", "wb") as f: for chunk in response.iter_content(chunk_size=8192): if chunk: f.write(chunk)
response = requests.get(url, headers=headers, stream=True, verify=False, timeout=120) gemini packbin download fix top
import requests headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)'} url = "https://data.gemini.com/.../trades.pb"
curl -L -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36" \ -H "Accept-Encoding: gzip, deflate, br" \ -H "Connection: keep-alive" \ --compressed \ -o [output_filename.pb] \ [Gemini_PackBin_URL] The -H "User-Agent..." tricks the server into thinking you are Chrome. The --compressed flag tells curl to handle the Brotli/Gzip encoding that Gemini uses natively. Fix #2: The "Resume" Fix for Interrupted Downloads (Network Stability) If you lost connection at 95%, do not restart. The top fix for large PackBin files is the -C - flag. # Python example pip install gemini-python python -c
Nothing is more frustrating than a failed script, a corrupted file, or a timeout error when trying to pull historical trade data. If you are searching for the you are likely facing one of the three dreaded errors: Checksum mismatch , Partial download , or Decoding failure .
curl -C - -O [Gemini_PackBin_URL] The -C - option tells curl to automatically determine where the download stopped and resume from there. Because PackBin files are binary, a resume is safer than a re-download, provided the server supports Range headers (Gemini does). A downloaded file that won't parse is worse than no file. Gemini provides SHA-512 checksums for every PackBin file. Your download fix is incomplete without verification. Here is how the top 1% of developers
Open your terminal (Linux/Mac) or WSL2 (Windows) and run: