Venture Capital

Lemnos Labs

Lemnos Labs, Inc. is an early-stage deeptech venture capital firm that invests at the earliest phases of hardware company formation, helping founders better understand their customer, anticipate problems, and leverage their assets. Lemnos contributes engineering, manufacturing, marketing, and financial capital alongside the check, and deliberately keeps a minimal public presence — its site is a single page that lists only the active portfolio. That portfolio spans robotics and autonomy (Built Robotics, Fort Robotics, Path Robotics, Scythe Robotics, Simbe Robotics, Petra), agricultural technology (FarmWise, Ceres Imaging), autonomous cargo aviation (Elroy Air), space data and precise positioning (Spire, Swift Navigation), simulation (Duality), video analytics (Lumeo), and physical security (Rhombus). Lemnos itself publishes no API, developer portal, SDK, or machine-readable specification; it is catalogued in the API Evangelist network as a venture-capital entity whose value to the network is its portfolio graph — several of its companies are meaningful API providers in their own right.

19 portfolio companies 8 publish APIs here 5 properties
CompanyVenture CapitalDeeptechHardwareRoboticsSeed StageInvestors
Portfolio Strength across 8 profiled portfolio companies on the network
0 top-rated API companies 0 exemplar · 0 strong
1 agent-ready companies 0 agent-native · 1 agent-ready
Average quality of the book:
Composite emerging 17.7
Agent-Readiness human-only 7.5

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.

Lemnos Labs has 19 portfolio companies tracked on the APIs.io network, of which 8 (42%) publish APIs indexed here.

Its highest-rated API providers on the network are Swift Navigation, Spire, Built Robotics, Simbe Robotics, Elroy Air.

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.

Developing 1 Usable, with meaningful gaps to close
Swift Navigation4 APIs41.7
Emerging 4 Early or largely undocumented
Spire5 APIs18.2Built Robotics15.6Simbe Robotics1 API15.5Elroy Air11.0
Minimal 3 Almost no public developer surface
FarmWise9.6Path Robotics7.7Hyphen5.0

Rest of Portfolio

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

ByteCeres ImagingDualityFort RoboticsLumeoPabellonPetraPicomesRhombusScythe RoboticsVolition

Scroll for all 11

Properties

Portfolio

Where the firm publishes its investments

Portfolio
Portfolio

Firm

The firm itself

Website
Website

Other

Everything else declared in apis.yml

DomainSecurity
DomainSecurity
 WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Source (apis.yml)

apis.yml Raw ↑ 
aid: lemnos-labs
name: Lemnos Labs
description: >-
  Lemnos Labs, Inc. is an early-stage deeptech venture capital firm that invests at
  the earliest phases of hardware company formation, helping founders better
  understand their customer, anticipate problems, and leverage their assets. Lemnos
  contributes engineering, manufacturing, marketing, and financial capital alongside
  the check, and deliberately keeps a minimal public presence — its site is a single
  page that lists only the active portfolio. That portfolio spans robotics and
  autonomy (Built Robotics, Fort Robotics, Path Robotics, Scythe Robotics, Simbe
  Robotics, Petra), agricultural technology (FarmWise, Ceres Imaging), autonomous
  cargo aviation (Elroy Air), space data and precise positioning (Spire, Swift
  Navigation), simulation (Duality), video analytics (Lumeo), and physical security
  (Rhombus). Lemnos itself publishes no API, developer portal, SDK, or
  machine-readable specification; it is catalogued in the API Evangelist network as a
  venture-capital entity whose value to the network is its portfolio graph — several
  of its companies are meaningful API providers in their own right.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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://lemnos.vc/lemnos-anvil-logo-transp.png
url: https://raw.githubusercontent.com/api-evangelist/lemnos-labs/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- foundry-group
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Venture Capital
- Deeptech
- Hardware
- Robotics
- Seed Stage
- Investors
tags_raw:
- Company
- Venture Capital
- Deeptech
- Hardware
- Robotics
- Seed Stage
- Investors
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://lemnos.vc
- type: Portfolio
  url: portfolio/lemnos-labs-portfolio.yml
- type: DomainSecurity
  url: security/lemnos-labs-domain-security.yml
- type: WellKnown
  url: well-known/lemnos-labs-well-known.yml
- type: LLMsTxt
  url: llms/lemnos-labs-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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