openapi: 3.1.0
info:
  title: Hasura Engine HTTP APIs Graphql API
  description: 'Hasura GraphQL Engine exposes a small set of HTTP APIs in addition to its

    GraphQL endpoint. This specification documents the most commonly used

    endpoints: GraphQL queries/mutations/subscriptions, Relay GraphQL, the

    Metadata API, the Schema API, the PG Dump API, the Explain API, the

    Health Check API, the Source Health Check API, the Config API, and the

    Version API.


    Authentication: When the engine is started with HASURA_GRAPHQL_ADMIN_SECRET,

    requests must include the `x-hasura-admin-secret` header (or a valid JWT).

    Roles and session variables are passed via `x-hasura-role` and any

    `x-hasura-*` session headers.

    '
  version: 2.0.0
  contact:
    name: Hasura
    url: https://hasura.io/docs/2.0/api-reference/overview/
servers:
- url: https://my-graphql-engine.example.com
  description: Self-hosted Hasura GraphQL Engine
security:
- adminSecret: []
- bearerAuth: []
tags:
- name: Graphql
paths:
  /v1/graphql:
    post:
      summary: Execute a GraphQL query, mutation, or subscription
      description: 'Primary GraphQL endpoint. Accepts a single GraphQL operation or a

        batched array. Always returns HTTP 200; errors are returned in the

        response body.

        '
      operationId: graphql
      requestBody:
        required: true
        content:
          application/json:
            schema:
              oneOf:
              - $ref: '#/components/schemas/GraphQLRequest'
              - type: array
                items:
                  $ref: '#/components/schemas/GraphQLRequest'
      responses:
        '200':
          description: GraphQL response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GraphQLResponse'
      tags:
      - Graphql
  /v1/graphql/explain:
    post:
      summary: Explain a GraphQL query
      description: Returns the SQL plan for a given GraphQL query.
      operationId: explain
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - query
              properties:
                query:
                  $ref: '#/components/schemas/GraphQLRequest'
                user:
                  type: object
                  description: Optional session variables.
                  additionalProperties:
                    type: string
      responses:
        '200':
          description: Query plan.
          content:
            application/json:
              schema:
                type: array
                items:
                  type: object
                  additionalProperties: true
      tags:
      - Graphql
components:
  schemas:
    GraphQLRequest:
      type: object
      required:
      - query
      properties:
        query:
          type: string
          description: The GraphQL query string.
        operationName:
          type: string
          description: Name of the operation to execute, if multiple are provided.
        variables:
          type: object
          description: Variables for the GraphQL operation.
          additionalProperties: true
    GraphQLResponse:
      type: object
      properties:
        data:
          type: object
          additionalProperties: true
        errors:
          type: array
          items:
            type: object
            additionalProperties: true
        extensions:
          type: object
          additionalProperties: true
  securitySchemes:
    adminSecret:
      type: apiKey
      in: header
      name: x-hasura-admin-secret
      description: Admin secret configured via HASURA_GRAPHQL_ADMIN_SECRET.
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: JWT token, when JWT authentication is configured.