Fern
AcquiredYC W23New York City, US · Founded 2022 · 30 employees · 4 known investors
Fern provides documentation, SDK generation, and CLI tools for APIs, built with AI features including integrated chat, MCP server support, and agent-first capabilities. The platform serves developers and AI agents consuming APIs across REST, WebSockets, and GraphQL protocols.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaSB2BOpen SourceAPIUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (W23)
Fern was founded in 2022 by Deep Singhvi.
DS
Deep SinghviinCo-Founder2021–2026Deep Singhvi is a software engineer at Fern. Previously, he worked as a software engineer at Palantir on data integration projects serving the Department of Defense and US Army.
Investors · 4
Funding
SEC filings, press & company announcements$9M disclosed across 1 round · 2025
- $9MSeries AApr 2025 · 3 sources
Bessemer Venture Partners (lead), Y Combinator (lead)
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
The YC application· Winter 2023 batch
Images
Competitors · 7
by search overlap
Postman134 shared keywordsPostman is an API platform that helps developers build, test, and manage APIs throughout their lifecycle. It serves organizations across industries, including 98% of the Fortune 500, and provides tooling for API development, quality assurance, and organizational governance.
Netezza91 shared keywordsIBM is a global technology company whose business spans enterprise software (including Red Hat, HashiCorp, and Confluent), IT infrastructure such as mainframes, servers, and storage, and IT consulting services. The company is also investing heavily in quantum computing and AI-based enterprise offerings, including its Lightwell open-source software security clearinghouse and the Anderon quantum wafer foundry.
StopLight54 shared keywordsStoplight is a collaborative platform for API design that helps teams build and manage APIs at scale. The platform serves developers and engineering teams building scalable API programs.
Gravitee Io46 shared keywordsGravitee provides a platform for managing and governing APIs, event streams, and AI agents, including agent identity and access control, MCP/A2A traffic governance, and LLM cost and risk controls. It serves enterprises seeking centralized security, observability, and governance over their API programs and AI agent deployments.
Wallarm46 shared keywordsWallarm provides an AI security and API security platform that discovers AI workloads, monitors runtime behavior, enforces policy inline, and generates continuous compliance evidence such as EU AI Act mapping. It is built for enterprises running AI on AWS, using kernel-level instrumentation to observe and protect AI agents and the APIs they call.
Moesif42 shared keywordsMoesif provides an API analytics and monetization platform for teams building API and AI products, offering usage-based billing on API calls and LLM token counts, payload debugging, quota enforcement, and usage monitoring. It is aimed at product and engineering teams that want to understand, govern, and monetize their API and AI usage.
OpenAPI Welcomes New Member Optic40 shared keywordsThe OpenAPI Initiative maintains the OpenAPI Specifications, a formal standard for describing HTTP APIs that lets developers understand API behavior, generate client code, create tests, and apply design standards. It also organizes the OAI Summit, an event held as part of DeveloperWeek.
Companies competing with Fern for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Frequently asked questions
- What does Fern do?
- Fern provides documentation, SDK generation, and CLI tools for APIs, built with AI features including integrated chat, MCP server support, and agent-first capabilities. The platform serves developers and AI agents consuming APIs across REST, WebSockets, and GraphQL protocols.
- Who founded Fern?
- Fern was founded by Deep Singhvi in 2022.
- Who are Fern's investors?
- Fern's investors include Bessemer Venture Partners, V1 VC, Y Combinator, CapitalX.
- How much funding has Fern raised?
- Fern has disclosed $9M raised across 1 round.
- Where is Fern headquartered?
- Fern is headquartered in New York City, US.