
Boston Seed Capital
37 Walnut Street Suite 110, Wellesley Hills, Massachusetts, 02481, United States
Overview
Boston Seed Capital provides seed-stage funding for internet-enabled businesses. Boston Seed Capital's experience is in internet-enabled, consumer, B2B SAAS, and the supporting services marketplaces. It was founded in 2010 and headquartered in Boston, Massachusetts.
- Total investments
- 70
- Lead investments
- 13
- Investments · 12mo
- 3
- Active investors
- 6
Sector focus
- E-Commerce
- FinTech
- Marketplace
- SaaS
Investment portfolio
- EnFi
Participated · Series A · Feb 2026
EnFi builds agent-based AI technology that automates the full commercial lending lifecycle, from initial deal screening through portfolio monitoring. The company’s agents act as virtual co-workers for banks, private credit funds, credit unions, and fintech lenders, and can be deployed in 60–90 days, expanding the capacity of credit professionals while strengthening risk oversight and accelerating credit decisions. Management positions the offering as “agentic human infrastructure,” augmenting rather than replacing human judgment. To date, EnFi has secured $22.5 million in venture funding, including its newly announced Series A round. The fresh capital will be used to scale the core technology, hire additional staff, and accelerate go-to-market initiatives. CEO and co-founder Joshua Summers emphasizes that demand for credit is outpacing the available human talent pool, making EnFi’s capacity-expanding solution increasingly attractive to lenders.
- Boomband
Led · Seed · Feb 2026
Boomband is building a human-first hiring platform that centers on 360-degree “Dossiers” for job seekers and AI-generated “Job Signals” for employers, eliminating traditional resumes and cold applications. Its real-time discovery engine, the Arena, matches “Players” (candidates) and “Scouts” (companies) based on mutual alignment rather than keyword filters. Founded by Monster.com creator Jeff Taylor, the company aims to solve industry pain points like applicant overload and candidate ghosting. Boomband will launch publicly in March 2026, beginning in New England with early corporate partners such as UWill, Leader Bank, CRH, Zus Health, Rochester Electronics, and South Shore Health. The platform targets sectors including tech, healthcare, financial services, and manufacturing. Backed by $4.0 million in seed funding, Boomband plans to expand nationwide later in 2026. The company is currently enrolling early adopters on its website.
- Splash Sports
Participated · Series B · Oct 2025
Splash Sports operates a real-money, peer-to-peer gaming platform that empowers fans to act as commissioners and run contests such as Survivor, Pick ’Em, PGA Major Tiers, and the daily QuickPicks "More or Less" game. Available in 44 U.S. states, Washington D.C., and Canada, the service emphasizes social competition and community engagement for both private groups and public audiences. The company originated through the acquisition of RunYourPool and OfficeFootballPool and now partners with media outlets, professional leagues, teams, athletes, and influencers to deepen fan interaction. During the 2023 NFL kickoff, Splash guaranteed more than $6.4 million in contest prizes, a 500 percent increase from the previous year, highlighting rapid growth in user engagement. New funding will expand the product suite, accelerate marketing efforts, and support additional partnerships, particularly within its fast-growing golf vertical. Future plans also include scaling across additional U.S. sports seasons and exploring new entertainment-based gaming formats.
- Patented.ai
Led · Seed · Jun 2023
Patented.ai is an AI-first intellectual property software provider based in San Francisco that builds tools to safeguard IP and prevent sensitive data leakage into large language models. Its flagship product, LLM Shield, proactively filters data before it is sent to LLMs to block personal identifying information, trade secrets and other sensitive material. The company launched a personal version of LLM Shield offering free on-device sensitive-data checks and the same multi-layered security features as the enterprise product. Patented.ai raised $4M in a pre-seed funding round and intends to use the proceeds to continue improving LLM Shield’s enterprise capabilities, disseminate resources to prevent AI data loss, and develop additional AI-powered software to protect intellectual property. The company was founded by Wayne Chang.
- Rithmm
Led · Seed · Jun 2023
Rithmm builds an AI-driven sports-betting platform that lets users create customized analytical models to generate recommended picks, predicted outcomes, win probabilities, and expected values. The platform leverages machine learning and AI algorithms to deliver personalized recommendations and predictive analysis for bettors. Rithmm already offers products for the NBA, WNBA, NCAA Basketball, and NCAA Football, and is launching an NFL product to complement those offerings. The company is led by CEO Megan Lanham and is based in Boston. Rithmm intends to use its recent funding to accelerate expansion, launch the NFL product, further enhance platform capabilities, and invest in talent acquisition and marketing. No operating metrics were disclosed in the article.