Venture Capital

Foundry Group

Foundry Group is a Boulder, Colorado venture capital firm founded in 2007 by Brad Feld, Seth Levine, Ryan McIntyre, and Jason Mendelson. The firm invests in early-stage technology startups across the United States, organizing its work around long-lived, horizontal investment themes (such as "glue", "protocol", "distribution", and "human computer interaction") rather than narrow verticals, with a particular affinity for hardware, robotics, consumer internet, developer tools, and B2B SaaS. Foundry pioneered a "network-driven" model that operates both as a direct investor in startups and as a limited partner in a curated network of more than 40 partner venture funds. The firm manages more than $3.0B for its limited partners, has made 320+ investments and 70+ exits, and is known for radical transparency through the books, blogs, and podcasts of its partners. Notable investments include Fitbit, Zynga, SendGrid, MakerBot, Gnip, Mapbox, SeatGeek, and WHOOP. In 2022 the partners announced Foundry would not raise another fund, continuing to steward its existing funds and portfolio through their life.

110 portfolio companies 16 publish APIs here 7 properties

Venture Capital Seed Series A Early Stage Hardware Robotics Developer Tools Consumer Internet B2B SaaS Network-Driven Boulder Colorado North America

Foundry Group has 110 portfolio companies tracked on the APIs.io network, of which 16 (15%) publish APIs indexed here.

Its highest-rated API providers on the network are SendGrid, Help Scout, Fitbit, StackHawk, SeatGeek.

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

SendGrid 44 APIs 73.3

Strong 1 Solid coverage with minor gaps

Help Scout 17 APIs 62.3

Developing 5 Usable, with meaningful gaps to close

Fitbit 12 APIs 58.5 StackHawk 1 API 56.9 SeatGeek 1 API 56.2 WHOOP 1 API 49.0 Mapbox 10 APIs 46.5

Thin 6 Limited public surface area

Bolt 7 APIs 40.7 Code Climate 5 APIs 37.0 HelloSign 2 APIs 34.3 Knock 8 APIs 33.9 Inscribe 1 API 33.1 Formlabs 6 APIs 32.7

Emerging 3 Early or largely undocumented

Pantheon 1 API 28.9 JumpCloud 3 APIs 24.2 Airship 6 APIs 16.6

Rest of Portfolio

94 further portfolio companies that don’t yet have a provider page on the network.

01 AdvisorsAdMeldAdversa AIAppDirectArthur VenturesAuthentic8Avid VenturesBasis Set VenturesBlueYardBonfire VenturesBoundlessBowery CapitalBunchaButlrCakeCalibrate VenturesChingona VenturesCostanoa VenturesFerrum HealthFideoFlexPointFloatMeForerunner VenturesFounder CollectiveFreestyleGlowforgeGnipGolden VenturesHarmonixHavenlyHigh Alpha CapitalHiHelloHitchPinHomebrewHustle FundIA VenturesJonesK9 VenturesKindred VenturesLandingLeadout CapitalLemnos LabsLooking Glass FactoryLowercarbon CapitalLudlow VenturesMacroFabMakerBotMapleMatchstick VenturesMeru HealthMirielModular RoboticsMolekuleMoxxie VenturesNIFTOrion by GravityParallel DomainPilotPioneer Square LabsPlaceholderQuiqQwickRealWearRegardResolute VenturesRodeoSingleFileSK VenturesSlauson & Co.SnapprSofar OceanSovrnSpekitSpheroSpider CapitalSpringbank CollectiveStarting Line VCStellationStockTwitsSuperCircleSuzyTechstars VenturesTenOneTenTraceraTrue VenturesTwindoTwine VenturesUncork CapitalUnion Square VenturesVendastaWave CapitalWestbound Equity PartnersWholesailZynga

Scroll for all 94

Properties

Portfolio

Where the firm publishes its investments

Portfolio

Portfolio

Portfolio

Portfolio

Team

Partners and investing staff

Team

Team

Team

Team

Firm

The firm itself

Website

Website

Crunchbase

Crunchbase

LinkedIn

Source (apis.yml)

aid: foundry-group
name: Foundry Group
description: >-
  Foundry Group is a Boulder, Colorado venture capital firm founded in 2007 by Brad Feld, Seth Levine,
  Ryan McIntyre, and Jason Mendelson. The firm invests in early-stage technology startups across the
  United States, organizing its work around long-lived, horizontal investment themes (such as "glue",
  "protocol", "distribution", and "human computer interaction") rather than narrow verticals, with a
  particular affinity for hardware, robotics, consumer internet, developer tools, and B2B SaaS. Foundry
  pioneered a "network-driven" model that operates both as a direct investor in startups and as a limited
  partner in a curated network of more than 40 partner venture funds. The firm manages more than $3.0B for
  its limited partners, has made 320+ investments and 70+ exits, and is known for radical transparency
  through the books, blogs, and podcasts of its partners. Notable investments include Fitbit, Zynga,
  SendGrid, MakerBot, Gnip, Mapbox, SeatGeek, and WHOOP. In 2022 the partners announced Foundry would not
  raise another fund, continuing to steward its existing funds and portfolio through their life.
image: https://foundry.vc/favicon.ico
x-type: venture-capital
x-category: Venture Capital
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.20'
tags:
  - Venture Capital
  - Seed
  - Series A
  - Early Stage
  - Hardware
  - Robotics
  - Developer Tools
  - Consumer Internet
  - B2B SaaS
  - Network-Driven
  - Boulder
  - Colorado
  - North America
apis: []
common:
  - type: Website
    url: https://foundry.vc/
  - type: Portfolio
    url: https://foundry.vc/portfolio/
  - type: Portfolio
    url: portfolio/foundry-group-portfolio.yml
  - type: Team
    url: https://foundry.vc/team/
  - type: Team
    url: team/foundry-group-team.yml
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/foundryvc
  - type: LinkedIn
    url: https://www.linkedin.com/company/foundry-vc
  - type: Features
    data:
      - "Stage: Early stage (Seed, Series A) direct investments + limited partner in partner funds"
      - "Model: Network-driven venture capital (direct investments + LP in 40+ partner funds)"
      - "Sectors: hardware, robotics, consumer internet, developer tools, B2B SaaS"
      - "Themes: horizontal themes (glue, protocol, distribution, human computer interaction)"
      - "Geography: United States"
      - "AUM: more than $3.0B for limited partners (self-reported)"
      - "Activity: 320+ investments, 70+ exits, 75+ active portfolio companies, 40+ partner funds"
      - "Founded: 2007"
      - "HQ: Boulder, Colorado, USA"
      - "Note: In 2022 the partners announced they would not raise another fund"
    sources:
      - https://foundry.vc/
      - https://foundry.vc/portfolio/
      - https://www.crunchbase.com/organization/foundryvc
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Foundry Group
    url: https://foundry.vc/