Venture Capital

Uncork Capital

Uncork Capital is a San Francisco-based seed-stage venture capital firm founded in 2004 by Jeff Clavier, who formalized his angel portfolio into one of Silicon Valley's earliest dedicated seed funds; it operated as SoftTech VC until rebranding to Uncork Capital in 2017. Led by managing partners Jeff Clavier and Andy McLoughlin, the firm invests at the seed stage with a "first to believe" conviction style, typically targeting 10-15% ownership and writing seed checks broadly in the $1.5M-$4M range across B2B applications and SaaS, developer tooling, infrastructure and security, consumer and marketplaces, frontier tech/hardware, and AI/ML. In May 2025 the firm closed $300M in fresh capital across Uncork VIII (a $225M seed fund) and Uncork Plus IV (a $75M growth fund), bringing it to roughly $1.2B in assets under management. Across 275+ investments and 100+ outcomes, its portfolio and exits include SendGrid, Fitbit, Poshmark, Postmates, Eventbrite, LaunchDarkly, Tailscale, Front, Shippo, ClassDojo, Groq, Human Interest, Carrot Fertility, and GPTZero.

174 portfolio companies 174 publish APIs here 13 properties
Venture CapitalSeedDeveloper ToolsInfrastructureFintechArtificial IntelligenceSaaSConsumerSan FranciscoUnited States
Portfolio Strength across 174 profiled portfolio companies on the network
13 top-rated API companies 1 exemplar · 12 strong
28 agent-ready companies 2 agent-native · 26 agent-ready
Average quality of the book:
Composite emerging 22.3
Agent-Readiness human-only 12.2

Firms are ranked by cumulative portfolio strength — how many highly-rated API companies they've backed, weighted by tier across composite quality and agent-readiness. The averages below are a secondary read on the typical company in the book.

Uncork Capital has 174 portfolio companies tracked on the APIs.io network, of which 174 (100%) publish APIs indexed here.

Its highest-rated API providers on the network are SendGrid, Fitbit, Torii, Chariot, Flux.

Portfolio on the Network

Portfolio companies that publish APIs indexed on APIs.io, grouped by their API Evangelist rating. Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
Strong 12 Solid coverage with minor gaps
Developing 21 Usable, with meaningful gaps to close
Thin 22 Limited public surface area
Emerging 47 Early or largely undocumented
Minimal 71 Almost no public developer surface

Properties

Portfolio

Where the firm publishes its investments

Team

Partners and investing staff

Content

Blog, podcast, newsletter, and research

Firm

The firm itself

Other

Everything else declared in apis.yml

Source (apis.yml)

apis.yml Raw ↑
aid: uncork-capital
name: Uncork Capital
description: >-
  Uncork Capital is a San Francisco-based seed-stage venture capital firm founded
  in 2004 by Jeff Clavier, who formalized his angel portfolio into one of Silicon
  Valley's earliest dedicated seed funds; it operated as SoftTech VC until
  rebranding to Uncork Capital in 2017. Led by managing partners Jeff Clavier and
  Andy McLoughlin, the firm invests at the seed stage with a "first to believe"
  conviction style, typically targeting 10-15% ownership and writing seed checks
  broadly in the $1.5M-$4M range across B2B applications and SaaS, developer
  tooling, infrastructure and security, consumer and marketplaces, frontier
  tech/hardware, and AI/ML. In May 2025 the firm closed $300M in fresh capital
  across Uncork VIII (a $225M seed fund) and Uncork Plus IV (a $75M growth fund),
  bringing it to roughly $1.2B in assets under management. Across 275+ investments
  and 100+ outcomes, its portfolio and exits include SendGrid, Fitbit, Poshmark,
  Postmates, Eventbrite, LaunchDarkly, Tailscale, Front, Shippo, ClassDojo, Groq,
  Human Interest, Carrot Fertility, and GPTZero.
x-type: venture-capital
x-category: Venture Capital
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://uncorkcapital.com/favicon.ico
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.20'
tags:
  - Venture Capital
  - Seed
  - Developer Tools
  - Infrastructure
  - Fintech
  - Artificial Intelligence
  - SaaS
  - Consumer
  - San Francisco
  - United States
apis: []
common:
  - type: Website
    url: https://uncorkcapital.com
  - type: Portfolio
    url: https://uncorkcapital.com/companies/
  - type: Portfolio
    url: portfolio/uncork-capital-portfolio.yml
  - type: Team
    url: https://uncorkcapital.com/team/
  - type: Team
    url: team/uncork-capital-team.yml
  - type: InvestmentThesis
    url: https://uncorkcapital.com/approach/
  - type: Blog
    url: https://uncorkcapital.com/blog/
  - type: News
    url: https://uncorkcapital.com/news/
  - type: Jobs
    url: https://jobs.uncorkcapital.com
  - type: Pitch
    url: mailto:pitches@uncorkcapital.com
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/softtech-vc
  - type: LinkedIn
    url: https://www.linkedin.com/company/uncork-capital/
  - type: Twitter
    url: https://x.com/uncorkcap
  - type: Features
    data:
      - 'Stage: Seed (primary), with a Plus growth vehicle for breakout follow-on'
      - 'Typical check: $1.5M-$4M seed, targeting 10-15% ownership'
      - 'Sectors: B2B applications & SaaS, developer tooling / infrastructure & security, consumer & marketplaces, frontier tech/hardware, AI/ML'
      - 'Geography: primarily United States (Silicon Valley)'
      - 'AUM: ~$1.2B (2025, reported)'
      - 'Latest funds: Uncork VIII $225M seed + Uncork Plus IV $75M growth (May 2025, $300M total)'
      - 'Founded: 2004 (as SoftTech VC; renamed Uncork Capital 2017)'
      - 'Founders / partners: Jeff Clavier (Founder, Managing Partner), Andy McLoughlin (Managing Partner)'
      - 'HQ: San Francisco, CA'
      - 'Track record: 275+ investments, 100+ outcomes, ~$59B enterprise value'
    sources:
      - https://en.wikipedia.org/wiki/Uncork_Capital
      - https://uncorkcapital.com
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: https://apisjson.org
  - FN: Uncork Capital
    url: https://uncorkcapital.com