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API marketplace

The home for your next API connection.

Discover APIs for your next product, or publish your own for teams to find and subscribe. Explore services for airlines, business data, communications, and more.

Try:

Airline APIsSample Data

SkyStatus

by Northwind Air Data

Track live flight status and gate changes across 900 airports.

99.99% uptime (example)From $29/mo (example, not a real price)

GET /v1/flights/AA118/status

Sample Data

{
  "flight": "AA118",
  "status": "in_air",
  "departure": { "airport": "JFK", "gate": "B41" },
  "arrival":   { "airport": "LHR", "eta": "07:12Z" },
  "updated_at": "2026-09-06T05:41:00Z"
}

Browse by use case

Start from the problem you're solving, not the vendor list.

Passenger airplane flying above the clouds

Airline APIs

Flight status, schedules, fares and booking flows for travel products.

Business Data

Company records, KYB checks, firmographics and enrichment feeds.

Communication applications on a phone screen

Communications

SMS, email, voice and push delivery with global reach.

Featured APIs

Sample listings showing what a live catalog entry looks like.

View all APIs

Airline APIs

SkyStatus

by Northwind Air Data

Track live flight status and gate changes across 900 airports.

From $29/mo

Airline APIs

FareLink Booking

by Meridian Travel Tech

Search fares and issue tickets from a single booking endpoint.

Usage based

Business Data

RegistryIQ

by Atlas Business Data

Verify a company's legal identity before onboarding it.

From $79/mo

Analytics dashboard with business charts

Business Data

FirmoGraph

by Cobalt Insights

Enrich a domain with size, industry and funding signals.

From $49/mo

Communications

Sendwave SMS

by Wavelength Comms

Deliver one-time codes and alerts to 180 countries.

$0.004 / message

Artificial intelligence network visualization

Communications

InboxRelay

by Postmark Labs

Send transactional email with per-message delivery events.

Free tier

Spotlight

Airline APIs: status vs. booking

Travel products usually need both, but they behave very differently. Know which one you're buying.

Flight status

Read-only feeds updated every 30–60 seconds
Gate, delay, diversion and baggage-belt events
Webhook push or polling, no ticketing agreement needed
Priced per lookup or by monitored flight

Booking

Transactional: search, hold, price and issue tickets
Requires accreditation and settlement setup
Stateful sessions with strict timeouts on fare holds
Priced per segment or per issued ticket

For API providers

Three steps from endpoint to listing.

Step 1
Create profile
Add your company, support contact and verification details.
Step 2
Add API details
Import an OpenAPI spec, set plans, rate limits and auth method.
Step 3
Submit listing
We review docs and reliability, then your API goes live in the catalog.

Evaluate before subscribing

Every listing shows the shape of the response, how auth works and what each plan allows — before you enter a card.

Sample Data

Response schema

flight: string
status: "scheduled" | "in_air" | "landed"
departure.gate: string | null
arrival.eta: string (ISO 8601)

The home for your next API connection.

SkyStatus