← Startups in San Francisco
San Francisco APIs 5 startups

"APIs" Startups in San Francisco

Every active San Francisco startup we index that carries the "APIs" tag.

All startups in San Francisco → "APIs" startups nationwide →
Last updated
2026-09-02
Hiring right now 20% 1 of 5
Open roles 55
City San Francisco

About "APIs" startups in San Francisco

Our index currently lists 5 tech startups in San Francisco tagged "APIs" — a city×tag slice of the live directory, not every "APIs" company nationwide and not every San Francisco startup regardless of tag. 20% of this slice is hiring right now (1 of 5). Apply links on each profile go to the company's own site; we don't act as a middleman. "APIs" startups in San Francisco include Exa, Context.dev, Totalis, Unsiloed AI, and Wit.ai. Categories represented here: AI / ML, Fintech, and Dev Tools. YC batches in this slice: S21, S26, Sp26, and F25, among others. Widen the view anytime: all San Francisco startups at /startups/location/san-francisco, or every "APIs" company nationwide at /startups/tag/apis.

↑ Trending
Exa
Exa
Web search rebuilt for LLMs
Developer ToolsSearchAI
Open Jobs 55
Team 75
Founded 2021
Context.dev
Context.dev
We give AI agents realtime web context.
B2BAIAPIs
Open Jobs —
Team 1
Founded 2026
Totalis
Totalis
derivative layer for prediction markets
DeFiAPIs
Open Jobs —
Team —
Founded 2026
Unsiloed AI
Unsiloed AI
API for parsing multimodal unstructured data
Artificial IntelligenceB2BInfrastructure
Open Jobs —
Team 2
Founded 2025
Wit.ai
Wit.ai
Natural Language for Developers --Wit is an API that makes it easy…
Developer ToolsNLPAPIs
Open Jobs —
Team 11
Founded 2013
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Related startup slices

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Frequently asked questions

How many "APIs" startups are in San Francisco?

Our index currently tracks 5 active tech startups in San Francisco tagged "APIs". Counts move as scrapers discover new companies and flag shutdowns inactive.

Which "APIs" startups are based in San Francisco?

Companies on this page include Exa, Context.dev, and Totalis, plus 2 more below. Each profile links to the company's site and any open roles we scrape.

How is this different from the San Francisco startups page or the "APIs" tag page?

/startups/location/san-francisco lists every indexed startup in San Francisco across tags. /startups/tag/apis lists every "APIs" startup nationwide. This page is the intersection — only companies that resolve to both San Francisco and "APIs".

Are these San Francisco "APIs" startups hiring?

1 of the 5 companies on this page currently have open roles in our jobs index.

How often is this list updated?

Automated scrapers refresh on the same daily cadence as the rest of the directory. The last index update was 2026-09-02.