I get blockfrost.utils.ApiError: {'status_code': 400, 'error': 'Bad Request', 'message': 'Invalid address for this network or malformed address format.'} when using pycardano and this code

# Create a BlockFrost chain context
context = BlockFrostChainContext(
    "Project_id", base_url=ApiUrls.mainnet.value)

Same problem if I use API url directly

Is it a Pycardano issue or blockfrost?

1 Answer 1


The error is pretty clear:

Invalid address for this network or malformed address format

Can you show us more of your code?

  • thanks for quick reply. I found the error.
    – Mik_A
    Commented Sep 27, 2023 at 10:01

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