Micro VC

Bullpen Capital

Bullpen Capital is a San Francisco-based venture capital firm founded in 2010 by Paul Martino, Duncan Davidson, and Richard Melmon that pioneered the "post-seed" investment category. The firm provides early-stage financing to companies that have found initial product-market fit but are overlooked by traditional investors "for no good reason" — deliberately backing unconventional founders and sectors that other firms dismiss. Bullpen typically writes checks in the range of roughly $1M-$5M, often stepping in between the seed and Series A rounds to help capital-efficient companies push toward a strong institutional raise. The firm invests across gaming, commerce, apps and services, health, consumer and lifestyle, fintech, and marketplaces, primarily in North America with select exposure in Latin America (notably Brazil and Mexico). With a portfolio of 90+ companies, Bullpen's notable investments include FanDuel, Namely, Classy, Braze, HomeLight, ipsy, SpotHero, Splitwise, and Wag.

92 portfolio companies 92 publish APIs here 14 properties
Venture CapitalPost-SeedSeedSeries AGamingFintechConsumerMarketplacesCommerceHealthNorth AmericaSan Francisco
Portfolio Strength across 91 profiled portfolio companies on the network
2 top-rated API companies 0 exemplar · 2 strong
15 agent-ready companies 1 agent-native · 14 agent-ready
Average quality of the book:
Composite emerging 18.6
Agent-Readiness human-only 10.1

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.

Bullpen Capital has 92 portfolio companies tracked on the APIs.io network, of which 92 (100%) publish APIs indexed here.

Its highest-rated API providers on the network are Ocrolus, SpotHero, Improvado, Fama, Beyond Pricing.

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.

Strong 2 Solid coverage with minor gaps
Developing 8 Usable, with meaningful gaps to close
Thin 12 Limited public surface area
Emerging 21 Early or largely undocumented
Minimal 48 Almost no public developer surface
Unrated 1 Not yet scored

Properties

Portfolio

Where the firm publishes its investments

Team

Partners and investing staff

Content

Blog, podcast, newsletter, and research

Firm

The firm itself

Source (apis.yml)

apis.yml Raw ↑
aid: bullpen-capital
name: Bullpen Capital
description: >-
  Bullpen Capital is a San Francisco-based venture capital firm founded in 2010 by Paul Martino,
  Duncan Davidson, and Richard Melmon that pioneered the "post-seed" investment category. The firm
  provides early-stage financing to companies that have found initial product-market fit but are
  overlooked by traditional investors "for no good reason" — deliberately backing unconventional
  founders and sectors that other firms dismiss. Bullpen typically writes checks in the range of
  roughly $1M-$5M, often stepping in between the seed and Series A rounds to help capital-efficient
  companies push toward a strong institutional raise. The firm invests across gaming, commerce, apps
  and services, health, consumer and lifestyle, fintech, and marketplaces, primarily in North America
  with select exposure in Latin America (notably Brazil and Mexico). With a portfolio of 90+ companies,
  Bullpen's notable investments include FanDuel, Namely, Classy, Braze, HomeLight, ipsy, SpotHero,
  Splitwise, and Wag.
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://www.bullpencap.com/favicon.ico
x-type: venture-capital
x-category: Micro VC
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.20'
tags:
  - Venture Capital
  - Post-Seed
  - Seed
  - Series A
  - Gaming
  - Fintech
  - Consumer
  - Marketplaces
  - Commerce
  - Health
  - North America
  - San Francisco
apis: []
common:
  - type: Website
    url: https://www.bullpencap.com/
  - type: Portfolio
    url: https://www.bullpencap.com/companies
  - type: Portfolio
    url: portfolio/bullpen-capital-portfolio.yml
  - type: Team
    url: https://www.bullpencap.com/team
  - type: Team
    url: team/bullpen-capital-team.yml
  - type: InvestmentThesis
    url: https://www.bullpencap.com/
  - type: Blog
    url: https://www.bullpencap.com/blog
  - type: Blog
    url: https://medium.com/bullpen-capital
  - type: News
    url: https://www.bullpencap.com/blog
  - type: Jobs
    url: https://talent.bullpencap.com/jobs
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/bullpen-capital
  - type: LinkedIn
    url: https://www.linkedin.com/company/bullpen-capital/
  - type: Twitter
    url: https://twitter.com/bullpencap
  - type: Contact
    url: mailto:hello@bullpencap.com
  - type: Features
    data:
      - "Stage: Post-seed, Seed, Series A"
      - "Typical check: ~$1M-$5M"
      - "Sectors: gaming, commerce, apps & services, health, consumer/lifestyle, fintech, marketplaces"
      - "Geography: North America, with select Latin America (Brazil, Mexico)"
      - "Portfolio: 90+ companies"
      - "Founded: 2010"
      - "HQ: San Francisco, California, USA"
    sources:
      - https://www.bullpencap.com/
      - https://www.crunchbase.com/organization/bullpen-capital
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Bullpen Capital
    url: https://www.bullpencap.com/