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.
Bullpen Capital has 92 portfolio companies tracked on the APIs.io network, of which 11 (12%) publish APIs indexed here.
Its highest-rated API providers on the network are Citus Data, Modal, SpotHero, Braze, SkyWatch.
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 1 Solid coverage with minor gaps
Developing 1 Usable, with meaningful gaps to close
Rest of Portfolio
81 further portfolio companies that don’t yet have a provider page on the network.
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Properties
Portfolio
Where the firm publishes its investments
Firm
The firm itself