API Startups

Fellow is a social community app that facilitates online and in-person connections among users.

1 investor

Scaphold.io provides a GraphQL-based backend platform with integrated services like push notifications, analytics, and file storage for developers building mobile, web, and IoT applications.

1 investor

Sendo provides an SMS and RCS API for startups, offering lower pricing than competitors and faster deployment for text messaging features. The platform includes developer documentation, monitoring tools, and simplified 10DLC regulatory compliance.

1 investor

Skyvern automates browser-based workflows using AI and computer vision, handling tasks like logging into portals, filling forms, and extracting data without APIs or custom scripts. It serves enterprise teams and developers automating repetitive portal interactions, data extraction, and compliance processes across industries.

1 investor

Smobi is an AI-powered messaging platform that enables brands to send interactive RCS (Rich Communication Services) and SMS campaigns directly to customers' phones. The platform offers drag-and-drop campaign builders, AI-powered customer service agents, product card carousels, and event booking capabilities, designed for ecommerce, customer engagement, and customer support use cases.

1 investor

SpecCheck provides software for opticians, optical labs, and their enterprise partners to manage order communication and lab operations. The platform replaces manual processes like faxed reports and phone calls with a digital workflow.

1 investor

StableBrowse sources, labels, and enriches real-world data for machine learning model training, focusing on hard-to-find datasets including enterprise workflows, egocentric video, and agent trajectories. The company serves frontier labs and AI research teams building large-scale models.

1 investor

An API gateway that enables caching for existing fetch-based APIs without requiring code rewrites, reducing latency for development teams.

1 investor

Surge provides an SMS API for developers to add text messaging to applications. The platform emphasizes ease of use with intuitive APIs, clear documentation, and simplified carrier registration processes.

1 investor

Tesora provides AI agents that assist actuaries at property and casualty insurers, reinsurers, and managing general agents by automating data assembly, method execution, and rating deployment while keeping actuarial decision-making under human control, with deployment on the client's infrastructure and full data privacy protections.

1 investor

Tesseral is an open source platform that provides identity and access management for business software, with features including single sign-on, user provisioning, role-based access control, and audit logging. It serves organizations managing access for employees, customers, services, and AI agents.

1 investor

Ultralight is a GPU-accelerated HTML rendering toolkit that embeds modern web content in games and native applications across Windows, macOS, Linux, and game consoles. Built on a lightweight WebKit fork, it serves game developers and native app developers who need high-performance, resource-efficient HTML rendering.

1 investor

Valari provides APIs that allow technology companies in Latin America to integrate financial products into their platforms. The platform enables businesses to offer fintech services to their users without building financial infrastructure from scratch.

1 investor

Vespper builds a document infrastructure platform for regulated industries, with initial focus on pharmaceutical and clinical workflows. The platform serves regulated organizations handling sensitive documents in highly compliance-driven environments.

1 investor

Vessel is a developer-first platform that enables companies to integrate with customer-facing applications through a unified API, webhooks, and managed data pipelines. It handles authentication, permission management, rate limiting, and data synchronization across multiple third-party apps.

1 investor

Vizzly supplies analytics features that SaaS companies can embed for their own users, with the flexibility of custom development but without the associated engineering burden.

1 investor

Warrant provides an authorization service that developers use to implement access control policies in their applications, offloading permission logic to a dedicated platform so engineering teams can concentrate on product development.

1 investor

Weav provides an API that enables small businesses to integrate with financial institutions and commerce platforms.

1 investor

XKit is a Twitter management tool that provides features for tweet deletion and overall Twitter account management. The product is currently in development and aims to help users take control and enhance their Twitter experience.

1 investor