FDC3

FDC3 Application API

The Application API from FDC3 — 5 operation(s) for application.

GitHub OpenAPI

Operations 5

GET /v2/apps/{appId} Retrieve an application definition #
GET /v2/apps Retrieve all application definitions #
GET /v1/apps/{appId} Retrieve an application definition #
POST /v1/apps Create a new application definition #
GET /v1/apps/search Retrieve a list of applications based on parameters provided. #

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/fdc3/refs/heads/main/openapi/fdc3-application-api-openapi.yml

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.
All 92 tools →

Call it yourself

curl for this page
This API 
curl "https://apis.io/api/v1/apis/fdc3-application-api"
All apis 
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

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.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

fdc3-application-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: FDC3 Directory Application API
  version: '2.0'
  description: Application Directory specification providing both interface definition and objects necessary to construct an application directory service.
  x-logo:
    url: /img/fdc3-logo-2019-color.png
    altText: FDC3 logo
servers:
- url: /appd
security:
- bearerAuth: []
tags:


# --- truncated at 32 KB (40 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/fdc3/refs/heads/main/openapi/fdc3-application-api-openapi.yml