Blocktorch Hardhat API

openapi: 3.0.3
info:
  title: Blocktorch Forking Hardhat API
  description: Manage Hardhat fork instances dynamically through Blocktorch's managed Hardhat forking service. Through this API, users can create and delete Hardhat instances programmatically, providing a seamless integration for continuous development and testing of dApps against forked EVM chains.
  version: 1.0.0
  contact:
    name: Blocktorch
    email: contact@blocktorch.xyz
    url: https://docs.blocktorch.xyz
  x-apievangelist-generated: '2026-07-18'
  x-apievangelist-method: searched
  x-apievangelist-source: https://docs.blocktorch.xyz/concepts/data-sources/local-forks/hardhat-forking-api.md
servers:
- url: https://c6yaznpyf4.execute-api.us-east-1.amazonaws.com/prod/api
  description: Production (AWS API Gateway)
security:
- ApiKeyAuth: []
tags:
- name: Hardhat
  description: Manage managed Hardhat fork instances.
paths:
  /hardhat/{projectId}:
    post:
      operationId: createHardhatInstance
      summary: Create a managed Hardhat instance
      description: Create a new managed Hardhat fork instance for the given project. The request body provides the Ethereum provider URL the fork is created against. On success the API returns the instanceId of the new fork.
      tags:
      - Hardhat
      parameters:
      - name: projectId
        in: path
        required: true
        description: The Blocktorch project the Hardhat instance belongs to.
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateHardhatRequest'
      responses:
        '200':
          description: Hardhat instance created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateHardhatResponse'
        '400':
          description: Bad request.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
  /hardhat/{projectId}/{chainId}:
    delete:
      operationId: deleteHardhatInstance
      summary: Delete a managed Hardhat instance
      description: Delete the managed Hardhat fork instance identified by the project and chain id. Returns a confirmation message on success.
      tags:
      - Hardhat
      parameters:
      - name: projectId
        in: path
        required: true
        description: The Blocktorch project the Hardhat instance belongs to.
        schema:
          type: string
      - name: chainId
        in: path
        required: true
        description: The chain id of the Hardhat instance to delete.
        schema:
          type: string
      responses:
        '200':
          description: Hardhat instance deleted.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Message'
        '400':
          description: Bad request.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Message:
      type: object
      properties:
        message:
          type: string
          description: Confirmation message.
    CreateHardhatResponse:
      type: object
      properties:
        instanceId:
          type: string
          description: Identifier of the created Hardhat fork instance.
        message:
          type: string
          description: Confirmation message.
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message describing why the request failed.
    CreateHardhatRequest:
      type: object
      required:
      - providerUrl
      properties:
        providerUrl:
          type: string
          description: The Ethereum provider URL the Hardhat fork is created against.
          format: uri
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key created on the Settings page of your Blocktorch project dashboard. Include it in the header of every request.