Alchemy API

Enterprise Grade API for Ethereum

Jumpstart your Ethereum development with Alchemy!
Instead of running your own nodes and building your own architecture,
just plug into our API and get back to focusing on developing
your application.

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Error Reference

Alchemy API Errors

In addition to the standard Ethereum JSON-RPC error codes, the Alchemy API will return the following error codes:

Alchemy API Error Codes

Error Code Meaning
400 Bad Request -- Your request is invalid. Double-check your JSON-RPC body
401 Unauthorized -- You must authenticate your request with an API key. Contact us to request one!
429 Too Many Requests -- You've hit your rate limit. Contact us if you require a higher rate limit.
500 Internal Server Error -- We're unable to process your request right now. Get in touch with us if you see this.

Example Response

// Example 401 Error
{"error": "Must be authenticated!"}


For JSON-RPC specific errors, the Alchemy API returns a 200 with the JSON-RPC error in the JSON response.

Standard JSON-RPC Error Codes

Code Possible Return message Description
-32700 Parse error Invalid JSON was received by the server. An error occurred on the server while parsing the JSON text.
-32600 Invalid Request The JSON sent is not a valid Request object.
-32601 Method not found The method does not exist / is not available.
-32602 Invalid params Invalid method parameter(s).
-32603 Internal error Internal JSON-RPC error.
-32000 to -32099 Server error Reserved for implementation-defined server-errors.

Example Response

        "message": "Invalid params: invalid length 63, expected a 0x-prefixed, padded, hex-encoded hash with length 64."

Updated 11 months ago

Error Reference

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