> ## Documentation Index
> Fetch the complete documentation index at: https://docs.calibri.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Link a wallet to this account

> Attaches a verified EOA to the SIGNED-IN account, so an email or social member can trade non-custodially. Distinct from wallet login, which finds or creates an account for the wallet. Returns 409 if either the account or the wallet is already linked.



## OpenAPI

````yaml /api-reference/openapi/calibri.yaml post /api/v2/persona/resource/users/wallet
openapi: 3.1.0
info:
  title: Calibri API
  version: 1.0.0
  description: >-
    The Calibri API. Discover markets, read live books, place signed orders, and
    manage positions and account data.

    Routed by path prefix to the service that answers it — which is an
    implementation detail, not something a caller has to reason about.
servers:
  - description: Production
    url: https://calibri.io
security: []
tags:
  - name: Health
    description: Service liveness.
    x-displayName: Health
  - name: Events
    description: Discover events and their metadata.
    x-displayName: Events
  - name: Markets
    description: List markets and load market detail for trading.
    x-displayName: Markets
  - name: Series
    description: Recurring event series.
    x-displayName: Series
  - name: Tags
    description: Editorial shelves used to browse the catalogue.
    x-displayName: Tags
  - name: Market Data
    description: Order book, depth, trade tape, tickers, and candles.
    x-displayName: Market Data
  - name: Assets
    description: Underlying asset price history for price-feed markets.
    x-displayName: Assets
  - name: Community
    description: Leaderboard and platform activity.
    x-displayName: Community
  - name: Currencies
    description: Currency registry.
    x-displayName: Currencies
  - name: Trade
    description: Place, list, and cancel orders.
    x-displayName: Trade
  - name: Positions
    description: Your matched contracts.
    x-displayName: Positions
  - name: Wallet
    description: Self-custody Safe, passkey, session keys, and relay.
    x-displayName: Wallet
  - name: Rewards
    description: Maker rebates and referral earnings.
    x-displayName: Rewards
  - name: Account
    description: Balances, ledger, PnL, limits, preferences, and profile.
    x-displayName: Account
  - name: Categories
    description: Categories
    x-displayName: Categories
  - name: Other
    description: Other
    x-displayName: Other
externalDocs:
  description: ''
  url: ''
paths:
  /api/v2/persona/resource/users/wallet:
    post:
      tags:
        - Account
      summary: Link a wallet to this account
      description: >-
        Attaches a verified EOA to the SIGNED-IN account, so an email or social
        member can trade non-custodially. Distinct from wallet login, which
        finds or creates an account for the wallet. Returns 409 if either the
        account or the wallet is already linked.
      parameters: []
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/WalletLinkRequest'
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WalletLinkedEntity'
          description: ''
      security:
        - apiKey: []
components:
  schemas:
    WalletLinkRequest:
      properties:
        message:
          description: >-
            The signed SIWE message, exactly as returned by
            /sessions/web3/nonce.
          example: 'Sign in to Calibri: 8f21c4a9e0b7'
          type: string
        signature:
          description: The signature over `message`.
          example: 0x7b21…
          type: string
      required:
        - message
        - signature
      type: object
    WalletLinkedEntity:
      properties:
        wallet_address:
          description: >-
            The EOA now attached to the account. It is also written into the
            session, so the next request carries it as a JWT claim.
          example: '0xE1188438C85C98aADFf1a88f97764E607B4978C3'
          type: string
      required:
        - wallet_address
      type: object
  securitySchemes:
    apiKey:
      description: >-
        HMAC-signed API key. Send X-Auth-Apikey, X-Auth-Nonce and
        X-Auth-Signature.
      in: header
      name: X-Auth-Apikey
      type: apiKey

````

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