How to share address book?

Sharing address books has never been easy

Arrange Data

Arrange data in the format

{
    "toId": "string"
    "book": number
    "access": "READ" | "READWRITE"
}

Generate & Sign Message

Call this API to get the message

Generate message for sharing address book

post

https://sandbox-api.fetcch.xyz/v1https://api.fetcch.xyz/v1

/address-books/request/message

Authorizations

apikeyAuth

secret-keystringRequired

Body

application/json

idintegerOptional

bookintegerRequired

tostringOptional

accessstring · enumRequiredPossible values:

pendingbooleanOptionalDefault: true

acceptedbooleanOptionalDefault: false

createdAtstring · date-timeOptional

updatedAtstring · date-timeRequired

Responses

200

Successful response

application/json

400Error

application/json

401Error

application/json

post

/address-books/request/message

HTTPcURLJavaScriptPython

POST /v1/address-books/request/message HTTP/1.1
Host: sandbox-api.fetcch.xyz
secret-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 155

{
  "id": 1,
  "book": 1,
  "to": "text",
  "access": "READ",
  "pending": true,
  "accepted": false,
  "createdAt": "2025-12-28T12:25:08.769Z",
  "updatedAt": "2025-12-28T12:25:08.769Z"
}

{
  "data": {
    "message": "text",
    "request": {
      "id": 1,
      "bookId": 1,
      "book": {
        "id": 1,
        "name": "text",
        "addresses": [
          {
            "id": 1,
            "address": "text",
            "chainType": "EVM",
            "name": "text",
            "addressBookId": 1,
            "addressBook": "[Circular Reference]"
          }
        ],
        "walletIds": [
          {
            "id": 1,
            "walletId": "text",
            "wallet": "[Circular Reference]",
            "name": "text",
            "addressBookId": 1,
            "addressBook": "[Circular Reference]",
            "createdAt": "2025-12-28T12:25:08.769Z",
            "updatedAt": "2025-12-28T12:25:08.769Z"
          }
        ],
        "ownerId": "text",
        "owner": {
          "owner": "text",
          "ownerId": "text",
          "ownerIdentity": {
            "id": "text",
            "identifier": "text",
            "providerId": "text",
            "provider": "[Circular Reference]",
            "defaultAddress": "text",
            "default": {
              "address": "text",
              "chain": {
                "id": 1,
                "name": "text",
                "symbol": "text",
                "icon": "text",
                "rpc": [
                  "text"
                ],
                "type": "EVM",
                "shortName": "text",
                "infoURL": "text",
                "chainId": 1,
                "updatedAt": "2025-12-28T12:25:08.769Z",
                "createdAt": "2025-12-28T12:25:08.769Z"
              },
              "chainId": 1,
              "isMultisig": false,
              "isSmartContractWallet": false,
              "walletId": {
                "id": 1,
                "name": "text",
                "symbol": "text",
                "icon": "text",
                "rpc": [
                  "text"
                ],
                "type": "EVM",
                "shortName": "text",
                "infoURL": "text",
                "chainId": 1,
                "updatedAt": "2025-12-28T12:25:08.769Z",
                "createdAt": "2025-12-28T12:25:08.769Z"
              },
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "secondary": "[Circular Reference]",
            "nonce": 0,
            "currentSignature": "text",
            "previousSignature": "text",
            "isContract": false,
            "syncedAt": "2025-12-28T12:25:08.769Z",
            "createdAt": "2025-12-28T12:25:08.769Z"
          },
          "createdAt": "2025-12-28T12:25:08.769Z",
          "updatedAt": "2025-12-28T12:25:08.769Z"
        },
        "requests": [
          {
            "id": 1,
            "bookId": 1,
            "book": "[Circular Reference]",
            "toId": "text",
            "to": "[Circular Reference]",
            "access": "READ",
            "pending": true,
            "accepted": false,
            "createdAt": "2025-12-28T12:25:08.769Z",
            "updatedAt": "2025-12-28T12:25:08.769Z"
          }
        ],
        "createdAt": "2025-12-28T12:25:08.769Z",
        "updatedAt": "2025-12-28T12:25:08.769Z"
      },
      "toId": "text",
      "to": {
        "owner": "text",
        "ownerId": "text",
        "ownerIdentity": {
          "id": "text",
          "identifier": "text",
          "providerId": "text",
          "provider": "[Circular Reference]",
          "defaultAddress": "text",
          "default": {
            "address": "text",
            "chain": {
              "id": 1,
              "name": "text",
              "symbol": "text",
              "icon": "text",
              "rpc": [
                "text"
              ],
              "type": "EVM",
              "shortName": "text",
              "infoURL": "text",
              "chainId": 1,
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "chainId": 1,
            "isMultisig": false,
            "isSmartContractWallet": false,
            "walletId": {
              "id": 1,
              "name": "text",
              "symbol": "text",
              "icon": "text",
              "rpc": [
                "text"
              ],
              "type": "EVM",
              "shortName": "text",
              "infoURL": "text",
              "chainId": 1,
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "updatedAt": "2025-12-28T12:25:08.769Z",
            "createdAt": "2025-12-28T12:25:08.769Z"
          },
          "secondary": "[Circular Reference]",
          "nonce": 0,
          "currentSignature": "text",
          "previousSignature": "text",
          "isContract": false,
          "syncedAt": "2025-12-28T12:25:08.769Z",
          "createdAt": "2025-12-28T12:25:08.769Z"
        },
        "createdAt": "2025-12-28T12:25:08.769Z",
        "updatedAt": "2025-12-28T12:25:08.769Z"
      },
      "access": "READ",
      "pending": true,
      "accepted": false,
      "createdAt": "2025-12-28T12:25:08.769Z",
      "updatedAt": "2025-12-28T12:25:08.769Z"
    }
  },
  "status": 1,
  "timestamp": "2025-12-28T12:25:08.769Z"
}

Sign the above message by following signature guidelines mentioned here according to the chain you are using

Call API

Create address book request

post

https://sandbox-api.fetcch.xyz/v1https://api.fetcch.xyz/v1

/address-books/request

Authorizations

apikeyAuth

secret-keystringRequired

Body

application/json

idintegerOptional

signaturestringOptional

bookintegerRequired

tostringOptional

accessstring · enumRequiredPossible values:

pendingbooleanOptionalDefault: true

acceptedbooleanOptionalDefault: false

createdAtstring · date-timeOptional

updatedAtstring · date-timeRequired

Responses

200

Successful response

application/json

400Error

application/json

401Error

application/json

post

/address-books/request

HTTPcURLJavaScriptPython

POST /v1/address-books/request HTTP/1.1
Host: sandbox-api.fetcch.xyz
secret-key: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 174

{
  "id": 1,
  "signature": "text",
  "book": 1,
  "to": "text",
  "access": "READ",
  "pending": true,
  "accepted": false,
  "createdAt": "2025-12-28T12:25:08.769Z",
  "updatedAt": "2025-12-28T12:25:08.769Z"
}

{
  "data": {
    "message": "text",
    "request": {
      "id": 1,
      "bookId": 1,
      "book": {
        "id": 1,
        "name": "text",
        "addresses": [
          {
            "id": 1,
            "address": "text",
            "chainType": "EVM",
            "name": "text",
            "addressBookId": 1,
            "addressBook": "[Circular Reference]"
          }
        ],
        "walletIds": [
          {
            "id": 1,
            "walletId": "text",
            "wallet": "[Circular Reference]",
            "name": "text",
            "addressBookId": 1,
            "addressBook": "[Circular Reference]",
            "createdAt": "2025-12-28T12:25:08.769Z",
            "updatedAt": "2025-12-28T12:25:08.769Z"
          }
        ],
        "ownerId": "text",
        "owner": {
          "owner": "text",
          "ownerId": "text",
          "ownerIdentity": {
            "id": "text",
            "identifier": "text",
            "providerId": "text",
            "provider": "[Circular Reference]",
            "defaultAddress": "text",
            "default": {
              "address": "text",
              "chain": {
                "id": 1,
                "name": "text",
                "symbol": "text",
                "icon": "text",
                "rpc": [
                  "text"
                ],
                "type": "EVM",
                "shortName": "text",
                "infoURL": "text",
                "chainId": 1,
                "updatedAt": "2025-12-28T12:25:08.769Z",
                "createdAt": "2025-12-28T12:25:08.769Z"
              },
              "chainId": 1,
              "isMultisig": false,
              "isSmartContractWallet": false,
              "walletId": {
                "id": 1,
                "name": "text",
                "symbol": "text",
                "icon": "text",
                "rpc": [
                  "text"
                ],
                "type": "EVM",
                "shortName": "text",
                "infoURL": "text",
                "chainId": 1,
                "updatedAt": "2025-12-28T12:25:08.769Z",
                "createdAt": "2025-12-28T12:25:08.769Z"
              },
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "secondary": "[Circular Reference]",
            "nonce": 0,
            "currentSignature": "text",
            "previousSignature": "text",
            "isContract": false,
            "syncedAt": "2025-12-28T12:25:08.769Z",
            "createdAt": "2025-12-28T12:25:08.769Z"
          },
          "createdAt": "2025-12-28T12:25:08.769Z",
          "updatedAt": "2025-12-28T12:25:08.769Z"
        },
        "requests": [
          {
            "id": 1,
            "bookId": 1,
            "book": "[Circular Reference]",
            "toId": "text",
            "to": "[Circular Reference]",
            "access": "READ",
            "pending": true,
            "accepted": false,
            "createdAt": "2025-12-28T12:25:08.769Z",
            "updatedAt": "2025-12-28T12:25:08.769Z"
          }
        ],
        "createdAt": "2025-12-28T12:25:08.769Z",
        "updatedAt": "2025-12-28T12:25:08.769Z"
      },
      "toId": "text",
      "to": {
        "owner": "text",
        "ownerId": "text",
        "ownerIdentity": {
          "id": "text",
          "identifier": "text",
          "providerId": "text",
          "provider": "[Circular Reference]",
          "defaultAddress": "text",
          "default": {
            "address": "text",
            "chain": {
              "id": 1,
              "name": "text",
              "symbol": "text",
              "icon": "text",
              "rpc": [
                "text"
              ],
              "type": "EVM",
              "shortName": "text",
              "infoURL": "text",
              "chainId": 1,
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "chainId": 1,
            "isMultisig": false,
            "isSmartContractWallet": false,
            "walletId": {
              "id": 1,
              "name": "text",
              "symbol": "text",
              "icon": "text",
              "rpc": [
                "text"
              ],
              "type": "EVM",
              "shortName": "text",
              "infoURL": "text",
              "chainId": 1,
              "updatedAt": "2025-12-28T12:25:08.769Z",
              "createdAt": "2025-12-28T12:25:08.769Z"
            },
            "updatedAt": "2025-12-28T12:25:08.769Z",
            "createdAt": "2025-12-28T12:25:08.769Z"
          },
          "secondary": "[Circular Reference]",
          "nonce": 0,
          "currentSignature": "text",
          "previousSignature": "text",
          "isContract": false,
          "syncedAt": "2025-12-28T12:25:08.769Z",
          "createdAt": "2025-12-28T12:25:08.769Z"
        },
        "createdAt": "2025-12-28T12:25:08.769Z",
        "updatedAt": "2025-12-28T12:25:08.769Z"
      },
      "access": "READ",
      "pending": true,
      "accepted": false,
      "createdAt": "2025-12-28T12:25:08.769Z",
      "updatedAt": "2025-12-28T12:25:08.769Z"
    }
  },
  "status": 1,
  "timestamp": "2025-12-28T12:25:08.769Z"
}

Websockets & Webhooks

Coming soon...