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

# Chains

> Get all supported blockchain networks.

**Cost:** Free (0 credits)

**Get your API key:** [Dev Portal](https://data.octav.fi)



## OpenAPI

````yaml /openapi.json get /chains
openapi: 3.0.0
info:
  title: Octav API
  description: >-
    Comprehensive blockchain data API for portfolio management, transactions,
    and DeFi analytics
  version: 1.0.0
  contact:
    name: Octav Support
    url: https://octav.fi
    email: info@octav.fi
servers:
  - url: https://api.octav.fi/v1
    description: Production API
security:
  - bearerAuth: []
tags:
  - name: Portfolio
    description: Portfolio and holdings endpoints
  - name: Virtual Users
    description: Virtual user management and portfolio endpoints (Pro only)
  - name: Nav
    description: Net Asset Value endpoints
  - name: Wallet
    description: Wallet information endpoints
  - name: Transactions
    description: Transaction history endpoints
  - name: Approvals
    description: Token approval endpoints
  - name: Tokens
    description: Token data endpoints
  - name: Airdrops
    description: Airdrop eligibility endpoints
  - name: Sync
    description: Data synchronization endpoints
  - name: Status
    description: Status check endpoints
  - name: Credits
    description: Credit balance endpoints
  - name: Chains
    description: Blockchain network and protocol endpoints
  - name: Contract Protocol
    description: Resolve a contract address to its DeFi protocol
  - name: Beacon Validators
    description: >-
      Ethereum beacon chain validator endpoints — details, rewards, withdrawals,
      and deposits (mainnet only)
paths:
  /chains:
    get:
      tags:
        - Chains
      summary: Chains
      description: |-
        Get all supported blockchain networks.

        **Cost:** Free (0 credits)

        **Get your API key:** [Dev Portal](https://data.octav.fi)
      operationId: getChains
      parameters: []
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  properties:
                    chainId:
                      type: string
                      description: Blockchain network ID (e.g. "1" for Ethereum)
                    key:
                      type: string
                      description: Short identifier used in API requests (e.g. "ethereum")
                    name:
                      type: string
                      description: Human-readable chain name (e.g. "Ethereum")
                    symbol:
                      type: string
                      description: Native token symbol (e.g. "ETH")
                    color:
                      type: string
                      description: Hex color code for UI display (e.g. "#627EEA")
                    imgSmall:
                      type: string
                      description: URL to small chain icon
                    imgLarge:
                      type: string
                      description: URL to large chain icon
                    explorerTokenUrl:
                      type: string
                      description: Block explorer URL template for tokens
                    explorerTransactionUrl:
                      type: string
                      description: Block explorer URL template for transactions
                    explorerAddressUrl:
                      type: string
                      description: Block explorer URL template for addresses
                    blockscoutExplorerAddressUrl:
                      type: string
                      nullable: true
                      description: >-
                        Blockscout explorer URL for addresses (null if
                        unavailable)
                    blockscoutExplorerTokenUrl:
                      type: string
                      nullable: true
                      description: Blockscout explorer URL for tokens (null if unavailable)
                    blockscoutExplorerTransactionUrl:
                      type: string
                      nullable: true
                      description: >-
                        Blockscout explorer URL for transactions (null if
                        unavailable)
                    isPortfolioSupported:
                      type: boolean
                      description: Whether portfolio tracking is supported on this chain
                    isTransactionsSupported:
                      type: boolean
                      description: Whether transaction history is supported on this chain
        '401':
          description: Unauthorized — invalid or missing Bearer token
        '429':
          description: Too Many Requests — rate limit exceeded
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
      security:
        - bearerAuth: []
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````