> ## Documentation Index
> Fetch the complete documentation index at: https://docs.x84.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Health check



## OpenAPI

````yaml https://api.x84.ai/openapi.yaml get /health
openapi: 3.0.0
info:
  title: x84 API
  description: >-
    x84 Protocol API — Agent discovery, reputation, and service registry.


    ## Overview


    On-chain data indexed from the x84 Solana program, cached with 30s TTL.


    ### Agents

    Search and discover AI agents registered as Metaplex Core NFTs. Filter by
    category, owner, or active status. Each agent includes a computed reputation
    summary.


    ### Services

    MCP, A2A, API, and Web service endpoints registered per agent.


    ### Categories

    Known agent categories mapped to their on-chain tag hashes (SHA-256). Use
    category names in the `GET /agents` filter.


    ### Pagination

    All list endpoints support `page`, `limit`, `sortBy`, and `sortOrder` query
    parameters.
  version: 0.1.0
  contact: {}
servers:
  - url: https://api.x84.ai
    description: Endpoint
security: []
tags:
  - name: Agents
    description: Agent discovery, search, registration, categories, and detail
  - name: Services
    description: Service endpoints per agent
  - name: Users
    description: Authenticated user endpoints
paths:
  /health:
    get:
      tags:
        - Health
      summary: Health check
      operationId: HealthController_check
      parameters: []
      responses:
        '200':
          description: ''

````