Etherscan API

naftiko: 1.0.0-alpha2
info:
  label: Etherscan API
  description: Etherscan API V2 provides unified access to blockchain data across Ethereum and 60+ EVM-compatible chains,
    including transactions, addresses, blocks, smart contracts, token transfers, and gas tracking. A single API key works
    across all supported networks.
  tags:
  - Etherscan
  - API
  created: '2026-05-06'
  modified: '2026-05-06'
capability:
  consumes:
  - type: http
    namespace: etherscan
    baseUri: https://api.etherscan.io/v2/api
    description: Etherscan API HTTP API.
    authentication:
      type: apikey
      in: query
      name: apikey
      value: '{{ETHERSCAN_TOKEN}}'
    resources:
    - name: resource
      path: /
      operations:
      - name: callapi
        method: GET
        description: Unified API endpoint
        inputParameters:
        - name: chainid
          in: query
          type: integer
          required: true
          description: Numeric chain ID (e.g. 1 for Ethereum mainnet, 56 for BNB Smart Chain, 8453 for Base).
        - name: module
          in: query
          type: string
          required: true
          description: API module (account, contract, transaction, block, stats, gastracker, token).
        - name: action
          in: query
          type: string
          required: true
          description: Action within the module (e.g. balance, txlist, tokenbalance, getabi).
        - name: address
          in: query
          type: string
          description: Ethereum address for account or token operations.
        - name: contractaddress
          in: query
          type: string
          description: Smart contract address for token or contract operations.
        - name: startblock
          in: query
          type: integer
        - name: endblock
          in: query
          type: integer
        - name: page
          in: query
          type: integer
        - name: offset
          in: query
          type: integer
        - name: sort
          in: query
          type: string
        - name: tag
          in: query
          type: string
          description: Block tag (latest, earliest, pending) or block number.
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
  exposes:
  - type: rest
    port: 8080
    namespace: etherscan-rest
    description: REST adapter for Etherscan API.
    resources:
    - path: /
      name: callapi
      operations:
      - method: GET
        name: callapi
        description: Unified API endpoint
        call: etherscan.callapi
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    port: 9090
    namespace: etherscan-mcp
    transport: http
    description: MCP adapter for Etherscan API for AI agent use.
    tools:
    - name: callapi
      description: Unified API endpoint
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: etherscan.callapi
      with:
        chainid: tools.chainid
        module: tools.module
        action: tools.action
        address: tools.address
        contractaddress: tools.contractaddress
        startblock: tools.startblock
        endblock: tools.endblock
        page: tools.page
        offset: tools.offset
        sort: tools.sort
        tag: tools.tag
      inputParameters:
      - name: chainid
        type: integer
        description: Numeric chain ID (e.g. 1 for Ethereum mainnet, 56 for BNB Smart Chain, 8453 for Base).
        required: true
      - name: module
        type: string
        description: API module (account, contract, transaction, block, stats, gastracker, token).
        required: true
      - name: action
        type: string
        description: Action within the module (e.g. balance, txlist, tokenbalance, getabi).
        required: true
      - name: address
        type: string
        description: Ethereum address for account or token operations.
      - name: contractaddress
        type: string
        description: Smart contract address for token or contract operations.
      - name: startblock
        type: integer
        description: startblock
      - name: endblock
        type: integer
        description: endblock
      - name: page
        type: integer
        description: page
      - name: offset
        type: integer
        description: offset
      - name: sort
        type: string
        description: sort
      - name: tag
        type: string
        description: Block tag (latest, earliest, pending) or block number.
      outputParameters:
      - type: object
        mapping: $.
binds:
- namespace: env
  keys:
    ETHERSCAN_TOKEN: ETHERSCAN_TOKEN