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If the API is not responding as expected, this page helps you tell an API outage apart from an issue in your own request:

Etherscan Status

Live API uptime and incident history. Check here first.

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Rule out your own request

If the status page shows no incident, confirm the problem is not on your side.
1

Confirm the API responds

This returns the latest Ethereum block number. Replace YourApiKey and call the endpoint:
A result with a block number (in hex) means the API is up and your key is valid. An error under result points to your request or key. See Common error messages.
2

Check your usage

Confirm you are within your daily quota with the getapilimit endpoint:
The response shows the calls allowed and used for the day, so you can tell a rate-limit block from a service issue.

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Still stuck?

If calls fail across chains, your key and request are correct, and the status page shows no incident, contact us.