Alchemy Token Metadata API

openapi: 3.2.0
info:
  title: Alchemy Token Token Metadata API
  description: The Alchemy Token API provides comprehensive access to ERC-20 token data across EVM-compatible networks. Developers can retrieve token balances by wallet address, token metadata (name, symbol, decimals, logo), and real-time pricing data. The API supports multi-chain queries and returns standardized responses for easy integration into wallets, portfolio trackers, and DeFi applications.
  version: '1.0'
  contact:
    name: Alchemy Support
    url: https://www.alchemy.com/support
  x-generated-from: documentation
servers:
- url: https://eth-mainnet.g.alchemy.com/v2/{apiKey}
  description: Ethereum Mainnet
  variables:
    apiKey:
      default: your-api-key
      description: Your Alchemy API key.
- url: https://polygon-mainnet.g.alchemy.com/v2/{apiKey}
  description: Polygon Mainnet
  variables:
    apiKey:
      default: your-api-key
      description: Your Alchemy API key.
tags:
- name: Token Metadata
  description: Retrieve metadata for ERC-20 tokens.
paths:
  /getTokenMetadata:
    post:
      operationId: getTokenMetadata
      summary: Alchemy Get Token Metadata
      description: Returns metadata (name, symbol, decimals, logo) for a given ERC-20 token contract address. Useful for displaying token information in wallets and portfolio applications without needing to call the token contract directly.
      tags:
      - Token Metadata
      security:
      - apiKeyHeader: []
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/JsonRpcRequest'
            examples:
              GetTokenMetadataRequestExample:
                summary: Default getTokenMetadata request
                x-microcks-default: true
                value:
                  id: 1
                  jsonrpc: '2.0'
                  method: alchemy_getTokenMetadata
                  params:
                  - contractAddress: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48'
      responses:
        '200':
          description: Token metadata retrieved successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TokenMetadataResponse'
              examples:
                GetTokenMetadata200Example:
                  summary: Default getTokenMetadata 200 response
                  x-microcks-default: true
                  value:
                    id: 1
                    jsonrpc: '2.0'
                    result:
                      name: USD Coin
                      symbol: USDC
                      decimals: 6
                      logo: https://static.alchemyapi.io/images/assets/3408.png
        '400':
          description: Bad request.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/JsonRpcErrorResponse'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  schemas:
    TokenMetadataResponse:
      type: object
      title: Token Metadata Response
      description: JSON-RPC response containing token metadata.
      properties:
        id:
          type: integer
          example: 1
        jsonrpc:
          type: string
          example: '2.0'
        result:
          $ref: '#/components/schemas/TokenMetadata'
    JsonRpcErrorResponse:
      type: object
      title: JSON-RPC Error Response
      description: JSON-RPC error response envelope.
      properties:
        id:
          type: integer
          example: 1
        jsonrpc:
          type: string
          example: '2.0'
        error:
          $ref: '#/components/schemas/JsonRpcError'
    JsonRpcError:
      type: object
      title: JSON-RPC Error
      description: Error object for a failed JSON-RPC response.
      properties:
        code:
          type: integer
          description: JSON-RPC error code.
          example: -32602
        message:
          type: string
          description: Human-readable error description.
          example: Invalid params
    TokenMetadata:
      type: object
      title: Token Metadata
      description: ERC-20 token metadata including name, symbol, decimals, and logo.
      properties:
        name:
          type: string
          description: Full token name.
          example: USD Coin
        symbol:
          type: string
          description: Token ticker symbol.
          example: USDC
        decimals:
          type: integer
          description: Number of decimal places for the token.
          example: 6
        logo:
          type: string
          format: uri
          description: URL of the token logo image.
          example: https://static.alchemyapi.io/images/assets/3408.png
    JsonRpcRequest:
      type: object
      title: JSON-RPC Request
      description: Standard JSON-RPC 2.0 request envelope for Alchemy API methods.
      required:
      - id
      - jsonrpc
      - method
      - params
      properties:
        id:
          type: integer
          description: Request identifier for response correlation.
          example: 1
        jsonrpc:
          type: string
          description: JSON-RPC protocol version.
          example: '2.0'
        method:
          type: string
          description: Alchemy or Ethereum JSON-RPC method name.
          example: alchemy_getTokenBalances
        params:
          type: array
          description: Method-specific parameters array.
          items: {}
  securitySchemes:
    apiKeyHeader:
      type: apiKey
      in: header
      name: X-Alchemy-Token
      description: Alchemy API key. Also embedded in server URL path variable.