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Approve Signature

Changed on

Submit approval for a signature to sign a message or typed data.

API scope required: wallets:signatures.create

post/2025-06-09/wallets/{walletLocator}/signatures/{signatureId}/approvals

Request

  • Base URL: https://staging.crossmint.com/api
  • URL: https://staging.crossmint.com/api/2025-06-09/wallets/{walletLocator}/signatures/{signatureId}/approvals
  • Auth: none declared. Required headers: X-API-KEY

Path parameters

walletLocatorstring required

A wallet locator can be of the format:

  • <walletAddress>
  • email:<email>:<chainType>[:<walletType>][:alias:<alias>] (walletType defaults to 'smart')
  • userId:<userId>:<chainType>[:<walletType>][:alias:<alias>] (white label user example)
  • phoneNumber:<phoneNumber>:<chainType>[:<walletType>][:alias:<alias>]
  • twitter:<handle>:<chainType>[:<walletType>][:alias:<alias>]
  • x:<handle>:<chainType>[:<walletType>][:alias:<alias>]
  • me:<chainType>[:<walletType>][:alias:<alias>] (Use when calling from the client side with a client API key)
  • chainType[:<walletType>]:alias:<alias>
signatureIdstring required

Headers

X-API-KEYstring required

API key required for authentication

Request body

Example request

{
  "approvals": [
    {
      "signature": {
        "r": "0x1234...",
        "s": "0x5678..."
      }
    }
  ]
}

Response

The signature has been successfully approved.

idstring required

Unique identifier for the signature

type'message' | 'typed-data' | 'auth-entries' required

The type of signature

chainType'evm' | 'solana' | 'aptos' | 'sui' | 'stellar' required

The blockchain type of the wallet

walletType'smart' | 'mpc' required

The wallet type (smart or mpc)

status'awaiting-approval' | 'pending' | 'failed' | 'success' required

Current status of the signature

errorunknown
outputSignaturestring

The wallet's output signature of the request

Changes

  • 3983c72e453aRevision changes
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      removed the astar-zkevm enum value from the // response property for the response status

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      removed the base-goerli enum value from the // response property for the response status

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      removed the base-goerli enum value from the // response property for the response status

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      removed the coti enum value from the // response property for the response status

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      removed the coti enum value from the // response property for the response status

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      removed the coti-testnet enum value from the // response property for the response status

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      removed the coti-testnet enum value from the // response property for the response status

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      removed the ethereum-goerli enum value from the // response property for the response status

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      removed the ethereum-goerli enum value from the // response property for the response status

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      removed the hedera enum value from the // response property for the response status

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      removed the hedera enum value from the // response property for the response status

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      removed the hedera-testnet enum value from the // response property for the response status

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      removed the hedera-testnet enum value from the // response property for the response status

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      removed the lightlink enum value from the // response property for the response status

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      removed the lightlink-pegasus enum value from the // response property for the response status

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      removed the mode-sepolia enum value from the // response property for the response status

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      removed the plume-testnet enum value from the // response property for the response status

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      removed the plume-testnet enum value from the // response property for the response status

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      removed the polygon-mumbai enum value from the // response property for the response status

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      removed the polygon-mumbai enum value from the // response property for the response status

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      removed the rari enum value from the // response property for the response status

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      removed the rari enum value from the // response property for the response status

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      removed the rari-testnet enum value from the // response property for the response status

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      removed the rari-testnet enum value from the // response property for the response status

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      removed the soneium enum value from the // response property for the response status

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      removed the soneium enum value from the // response property for the response status

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      removed the soneium-minato-testnet enum value from the // response property for the response status

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      removed the soneium-minato-testnet enum value from the // response property for the response status

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      removed the u2u-nebulas enum value from the // response property for the response status

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      removed the u2u-nebulas enum value from the // response property for the response status

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      removed the u2u-solaris enum value from the // response property for the response status

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      removed the u2u-solaris enum value from the // response property for the response status

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      removed the viction enum value from the // response property for the response status

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      removed the viction enum value from the // response property for the response status

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      removed the viction-testnet enum value from the // response property for the response status

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      removed the viction-testnet enum value from the // response property for the response status

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      removed the world-chain enum value from the // response property for the response status

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      removed the world-chain enum value from the // response property for the response status

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      removed the world-chain-sepolia enum value from the // response property for the response status

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      removed the world-chain-sepolia enum value from the // response property for the response status

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      removed the xai enum value from the // response property for the response status

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      removed the xai enum value from the // response property for the response status

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      removed the xai-sepolia-testnet enum value from the // response property for the response status

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      removed the xai-sepolia-testnet enum value from the // response property for the response status

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      removed the zenchain-testnet enum value from the // response property for the response status

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      removed the zenchain-testnet enum value from the // response property for the response status

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      removed the zora-goerli enum value from the // response property for the response status

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      removed the zora-goerli enum value from the // response property for the response status

  • 19493bf640a4Revision changes
    • warning

      added the new arc enum value to the // response property for the response status

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      added the new arc enum value to the // response property for the response status

    • warning

      added the new celo enum value to the // response property for the response status

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      added the new celo enum value to the // response property for the response status

    • warning

      added the new celo-sepolia enum value to the // response property for the response status

    • warning

      added the new celo-sepolia enum value to the // response property for the response status