53ON Xsite API

The Xsite API from 53ON — 2 operation(s) for xsite.

Operations 2

GET /xsite/packages/Search/Controllers/pst_search_providers.php Find local businesses and independent professionals near a point #
POST /xsite/packages/Mcp/Controllers/pst_mcp.php MCP endpoint. JSON-RPC 2.0, stateless streamable-http #

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OpenAPI Specification

53on-com-xsite-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: 53ON Public Xsite API
  version: 1.0.0
  summary: Directory and marketplace of local businesses and independent professionals.
  description: Public, read-only endpoints. No session and no API key required. If you speak MCP, prefer the MCP server described in /.well-known/mcp/server-card.json — it is the same data with tool descriptions attached.
  contact:
    url: https://53on.com/?p=contact
servers:
- url: https://53on.com
tags:
- name: Xsite
paths:
  /xsite/packages/Search/Controllers/pst_search_providers.php:
    get:
      operationId: searchProviders
      summary: Find local businesses and independent professionals near a point
      description: 'Returns businesses grouped in sections. IMPORTANT: without lat and lng the response is no_location — the area is otherwise derived by JavaScript from the browser IP, which an agent does not run. Send the coordinates yourself.'
      parameters:
      - name: lat
        in: query
        required: true
        schema:
          type: number
        description: Latitude of the user.
      - name: lng
        in: query
        required: true
        schema:
          type: number
        description: Longitude of the user.
      - name: q
        in: query
        required: false
        schema:
          type: string
        description: Free text. Spanish or English, synonyms resolved.
      - name: cat
        in: query
        required: false
        schema:
          type: string
        description: Service category key.
      - name: sort
        in: query
        required: false
        schema:
          type: string
          enum:
          - dist
          - rate
      - name: page
        in: query
        required: false
        schema:
          type: integer
          minimum: 1
      responses:
        '200':
          description: Businesses found.
          content:
            application/json:
              schema:
                type: object
      tags:
      - Xsite
  /xsite/packages/Mcp/Controllers/pst_mcp.php:
    post:
      operationId: mcp
      summary: MCP endpoint. JSON-RPC 2.0, stateless streamable-http
      description: 'Methods: tools/list, tools/call, ping. The initialize handshake is accepted but not required. GET returns 405 on purpose: there is no SSE stream here.'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                jsonrpc:
                  type: string
                  const: '2.0'
                id:
                  type:
                  - string
                  - integer
                  - 'null'
                method:
                  type: string
                  enum:
                  - tools/list
                  - tools/call
                  - ping
                  - initialize
                params:
                  type: object
              required:
              - jsonrpc
              - method
      responses:
        '200':
          description: JSON-RPC response.
          content:
            application/json:
              schema:
                type: object
        '405':
          description: 'GET is not supported: no SSE stream.'
      tags:
      - Xsite