APIFuseAPIFuseDocs

Getting started

  • Overview
  • Quickstart

Authentication

  • Managed keys
  • Scopes

Errors

  • Error model
  • Retries

Webhooks

  • Overview
  • Signatures

API reference

  • Amazon Japan
  • Baemin Provider
  • Bithumb
  • Buyee
  • CatchTable Restaurant Search and Reservations
  • Charan Commerce
  • Daangn public listings
  • Daiso Product and Store Data
  • Danawa price comparison
  • Demaecan
  • Ekitan
  • Goodchoice Domestic Lodging
  • Google Flights
  • Han River Water Level
  • Hot Pepper Gourmet provider
  • Hyundai Card
  • Incheon Airport Flights
  • Jalan
  • Japan National Diet Minutes
  • Japan Disaster Alerts
  • Japan EDINET Filings
  • Japan e-Gov Law
  • Japan e-Stat
  • Japan gBizINFO
  • Japan GSI Geocoding
  • Japan e-Gov Open Data
  • Japan Post ZIP
  • Japan Public Holidays
  • JMA Weather
  • KakaoMap Place Search and Directions
  • Kakao T Taxi Dispatch
  • KakaoTalk Native Messaging
  • Korea Address Search
  • AirKorea Real-time Air Pollution
  • Korea Animal Hospital
  • Korea Apartment Rent Prices
  • Korea Apartment Sale Prices
  • Korea Bid Notices
  • Korea Box Office
  • Korea Building Register
  • Korea Bus Arrival
  • Korea Business Verify
  • Korea Camping
  • Korea DART Corporate Finance
  • DART Corporate Info
  • Korea Culture Events
  • Korea Disaster Alert
  • Korea Emergency Hospital
  • Korea ETF
  • Korea EV Charger
  • Korea Exchange Rate
  • Korea Expressway Traffic
  • Korea Finance Products
  • Korea Fuel Price
  • Korea Heritage
  • Korea Holiday
  • Korea Hospital Info
  • Korea Intercity Bus
  • Korea Land Price
  • Korea MFDS Drug Safety
  • Korea MFDS Food Safety
  • Korea Household Waste Disposal Guide
  • Korea National Law Search and Lookup
  • Korea NEIS School Meals
  • Carrier List and Delivery Tracking
  • Korea Parking Lots
  • Korea Performance
  • Korea Pharmacy
  • Korea Population
  • Korea Stock Index
  • Korea Stock Price
  • Korea Store Registry
  • Korea Stray Animals
  • Korea Tour
  • Korea Train Schedule
  • Korea Weather Forecast Data
  • Korea Weather Forecast
  • Korea Welfare Service
  • K-Startup
  • LH Housing Notices
  • Market Kurly product data
  • Mercari
  • Modu Parking
  • Naver Blog Search
  • Naver Flight API
  • Naver Local
  • Naver Map
  • Naver News Search
  • NHK Program Guide
  • NOL Stays
  • Ohouse Store and Contents
  • Rakuten Books
  • Rakuten Ichiba
  • Rakuten Recipe
  • Rakuten Travel
  • SEC EDGAR Filings
  • Seoul Bike
  • Seoul Live Crowd Density
  • Seoul Subway Arrivals
  • Shinhan Bank
  • Shinhan Card
  • Skiplagged
  • Steam Store
  • SUUMO
  • Swing Taxi
  • Tabelog
  • TableCheck
  • Upbit
  • Visit Japan Web
  • Weverse Provider
  • Yahoo! Shopping (Japan)
  • Yogiyo
  • ZOZOTOWN

Guides

  • APIFuse Docs
  • Getting started
  • Authentication and Connections
  • Playground
  • OpenAPI and schemas
  • MCP endpoint
  • Developer MCP guide
  • Schema bundles
  • Next.js App Router integration
  • FastAPI integration
  • Error Handling
  • FAQ
  • Resources

Changelog

  • Changelog
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Guides

FastAPI integration

Call APIFuse from a server-side FastAPI application.

Use APIFuse from FastAPI routes that run on your server. Store the APIFuse API key in server configuration and validate both incoming request data and APIFuse responses.

1. Add typed models

Use Pydantic models from a schema bundle, or define models that match the operation schema from the API reference.

2. Call the gateway

py
import os

import httpx
from fastapi import APIRouter, Response

router = APIRouter()


@router.post("/places")
async def places(input_payload: dict) -> dict | Response:
    api_key = os.environ["APIFUSE_API_KEY"]

    async with httpx.AsyncClient(timeout=15.0) as client:
        response = await client.post(
            "https://api.apifuse.com/v1/kakaomap/search",
            headers={"Authorization": f"Bearer {api_key}"},
            json=input_payload,
        )

    if response.status_code >= 400:
        # Preserve the APIFuse error verdict (status and body bytes) instead
        # of collapsing every failure into one status. HTTPException would
        # nest the body under {"detail": ...} and hide the code / retryable /
        # source fields documented in the Error Handling guide.
        return Response(
            content=response.content,
            status_code=response.status_code,
            # Serve as JSON regardless of upstream Content-Type so an
            # unexpected non-JSON body can never render as same-origin HTML;
            # keep the retry and correlation headers the guide relies on.
            media_type="application/json",
            headers={
                key: value
                for key, value in {
                    "Retry-After": response.headers.get("retry-after"),
                    "X-Request-Id": response.headers.get("x-request-id"),
                }.items()
                if value is not None
            },
        )

    return response.json()

3. Return application data

Shape the APIFuse response into the data your product needs before returning it to browser or mobile clients.