CheckWebsiteNow .well Known API
The .well Known API from CheckWebsiteNow — 3 operation(s) for .well known.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/checkwebsitenow-com:checkwebsitenow-com-well-known-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: Checkwebsitenow Com .well Known API
version: 1.8.0
description: 'Operations tagged .well Known across 2 of this provider''s published API definitions: checkwebsitenow-com-openapi.json, checkwebsitenow-com-openapi.yml. Each path carries the servers of the definition it was published in.'
servers:
- url: /
description: Same origin as this description
tags:
- name: .well Known
paths:
/.well-known/api-catalog:
get:
operationId: getApiCatalog
summary: API catalog (RFC 9727 linkset)
responses:
'200':
description: Linkset pointing to this OpenAPI description, the API guide and the MCP server card.
content:
application/linkset+json:
schema:
type: object
required:
- linkset
properties:
linkset:
type: array
items:
type: object
tags:
- .well Known
servers:
- url: /
description: Same origin as this description
/.well-known/ard.json:
get:
operationId: getArdManifest
summary: Agentic Resource Discovery manifest listing the MCP server card
description: 'ARD v0.91 (a proposal, 2026-08-26): successor of /.well-known/ai-catalog.json, which stays available.'
responses:
'200':
description: ARD manifest
content:
application/json:
schema:
type: object
required:
- entries
properties:
entries:
type: array
items:
type: object
required:
- identifier
- displayName
- type
- url
properties:
identifier:
type: string
displayName:
type: string
description:
type: string
type:
const: application/mcp-server-card+json
url:
type: string
format: uri
representativeQueries:
type: array
items:
type: string
tags:
- .well Known
servers:
- url: /
description: Same origin as this description
/.well-known/ai-catalog.json:
get:
operationId: getAiCatalog
summary: AI Catalog listing the MCP server card
responses:
'200':
description: AI Catalog 1.0
content:
application/ai-catalog+json:
schema:
type: object
required:
- specVersion
- entries
properties:
specVersion:
const: '1.0'
entries:
type: array
items:
type: object
tags:
- .well Known
servers:
- url: /
description: Same origin as this description
x-refined-from:
- checkwebsitenow-com-openapi.json
- checkwebsitenow-com-openapi.yml