57 API Companies
That Have Listed new open positions

Merge

San Francisco, United States (2020)

The connectivity layer for AI

Belvo

Spain (2019)

Powering the next generation of financial innovators in Latin America.

Finch

San Francisco, United States (2020)

The #1 Unified API for Employment Systems

lemon.markets

Berlin, Germany (2020)

The infrastructure powering investment products.

Lokalise

Dover, United States (2017)

Speak every customer’s language: clearly, confidently, globally.

Salesforce

San Francisco, United States (1999)

We're the #1 AI CRM—where humans with agents drive customer success together.

Wordware (YC S24)

San Francisco, United States (2023)

AI Agent orchestration simplified

Vital (YC W20)

San Francisco, United States (2020)

API for at home health data. Receive data from hundreds of wearable devices and at home test kits with on...

Tyk

London, United Kingdom (2015)

Open Source #API gateway & #APImanagement platform. We're on a mission to connect every system in the wor...

emnify

Berlin, Germany (2014)

IoT connectivity with instant control.

Stream

Boulder, United States (2015)

Stream powers Chat, AI Moderation, Activity Feeds, Video & Audio for billions of global end-users.

Escape

San Francisco, United States (2020)

The only DAST that works with your modern stack and tests business logic instead of missing headers

LangChain

San Francisco, United States (2022)

LangChain is a large language model application development library

Alpaca

San Mateo, United States (2017)

Developer APIs for stocks, options and crypto trading, investing apps, and embedded fintech.

Opkit

New York, United States (2021)

Acquired by 11x • AI Phone Calls for Healthcare Providers • YC S21

Knot

New York, United States (2019)

The merchant connectivity platform. Switch cards-on-file in online merchant accounts.

Kong

San Francisco, United States (2017)

The Unified API and AI Platform. Unleash Intelligence.

RevenueCat

Brandon, United States (2017)

The world's best apps use RevenueCat to power purchases, manage customer data, and grow revenue on iOS, A...

Agave Games

Turkey (2021)

Building unique experiences to reach millions

OpenHealth Technologies

The Netherlands (2023)

The AI lab data harmonization & visualisation platform that every health organization needs.

Privy

United States (2021)

Powering crypto and stablecoin payments with powerful wallet infrastructure serving 100M+ accounts & bill...

SerpApi

Austin, United States (2017)

The best API to scrape and parse search engine results.

F11

Giessen, Germany (2014)

We are retail

Gravitee

Denver, United States (2016)

An end-to-end solution to securely manage Agentic AI, Events, and APIs, no matter the gateway, broker, or...

Flanks

Spain (2019)

Redefining the wealth management industry worldwide

vivenu

Dusseldorf, Germany (2018)

vivenu is the most flexible and advanced ticketing platform. It elevates your brand, your sales, and busi...

Craft AI

France (2015)

The first engineering tool dedicated to the industrialization of GenAI

Synthesized

London, United Kingdom (2020)

AI-Powered Test Data Automation for the Enterprise | TDM Automation | Test Data for what’s next. ™

Thryve

Berlin, Germany (2016)

Health services, insurers, and researchers rely on Thryve’s wearable API for 24/7 health data integration...

Mux

San Francisco, United States (2015)

Mux is the internet’s video infrastructure.

Treasury Prime

San Francisco, United States (2017)

Embedded banking software platform powering innovative multi-bank embedded finance solutions.

Tealium

San Diego, United States (2011)

We deliver trusted data for AI at enterprise scale

Cybrid

Toronto, Canada (2021)

Cybrid is a payments company offering the next generation of intelligent stablecoin and digital asset inf...

FrankieOne

Melbourne, Australia (2017)

Leaders in compliance, identity verification and fraud detection, helping companies onboard and protect t...

Cronofy

Nottingham, United Kingdom (2014)

Embedded scheduling technology for high-performance teams

CEQUENS

United Arab Emirates (2011)

Simple Solutions, Deeper Connections

Alpha Vantage Inc.

Boston, United States (2017)

Building the platform for the next generation of financial market participants

AssemblyAI

San Francisco, United States (2017)

Industry-leading Speech AI models to automatically recognize and understand speech.

Hydra Host

Miami, United States (2021)

A distributed marketplace for compute

Spade

New York, United States (2021)

Enriched transaction data you can build on.

StackOne

San Francisco, United States (2023)

Put your AI agent to work Integration infrastructure for AI agents. 200+ connectors, 10k+ AI actions—full...

Unit21

San Francisco, United States (2018)

The leader in AI Risk Infrastructure for fraud & AML.

Terminal (YC S23)

Toronto, Canada (2023)

Universal API for Telematics Data | Y Combinator

Zopper

Noida, India (2011)

Democratising Access To Insurance

Sieve

San Francisco, United States (2022)

Video datasets for frontier AI.

Yooz

France (2010)

Lean Financial Operations™, only with Yooz

Flinks

Toronto, Canada (2016)

The embedded finance platform for connectivity, intelligence, and payments.

Plivo

Austin, United States (2011)

AI agents to engage and delight your customers across Phone calls, Chat, WhatsApp, SMS, Email and Slack.

Agave

San Francisco, United States (2021)

API & Data Infrastructure for Construction

Fonoa

Ireland (2019)

Indirect Tax Technology for Global Businesses.

LlamaIndex

San Francisco, United States (2023)

AI agents for document OCR + workflows

EXTHAND

Belgium (2022)

Exthand, the most secure way to connect your app to banks, worldwide.

Deepgram

San Francisco, United States (2015)

Powering the Voice AI economy—trusted by 200,000+ developers to build low-latency, enterprise-grade Voice...

Retell AI

San Carlos, United States (2023)

Supercharge your call operation with Retell.

People Data Labs

San Francisco, United States (2015)

People and Company Intelligence

PolicyFly

New York, United States (2018)

All-in-one platform for insurers to distribute, quote, communicate and bind insurance.

Glazed - Elite Developers

Portugal (2011)

We’re a team of highly specialized developers that takes on the most demanding web and mobile development...