Create free-tier account and API key

curl --request POST \
  --url https://api.0xarchive.io/v1/web3/signup \
  --header 'Content-Type: application/json' \
  --data '
{
  "message": "<string>",
  "signature": "0x..."
}
'

{
  "api_key": "0xa_live_abc123...",
  "tier": "free",
  "wallet_address": "<string>"
}

POST

https://api.0xarchive.io

web3

signup

Create free-tier account and API key

curl --request POST \
  --url https://api.0xarchive.io/v1/web3/signup \
  --header 'Content-Type: application/json' \
  --data '
{
  "message": "<string>",
  "signature": "0x..."
}
'

{
  "api_key": "0xa_live_abc123...",
  "tier": "free",
  "wallet_address": "<string>"
}

Body

application/json

message

string

required

The SIWE message from the challenge endpoint

signature

string

required

Hex-encoded signature from personal_sign (0x-prefixed)

Example:

"0x..."

Response

Account created and API key returned

api_key

string

The generated API key

Example:

"0xa_live_abc123..."

tier

string

Account tier

Example:

"free"

wallet_address

string

The wallet address that owns this key

Last modified on June 27, 2026

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