Venture Capital

Basis Set Ventures

Basis Set Ventures is an AI-native, early-stage venture capital firm founded in 2017 by Dr. Lan Xuezhao and headquartered in the San Francisco Bay Area. The firm invests at the seed and early stages in founders building artificial intelligence across AI infrastructure, autonomous systems, molecular and materials discovery, agentic development tooling, intelligent collaboration, and automated workflows. Basis Set announced a $250M Fund IV and describes itself as "the first capital when it's just you and your vision," pairing capital with an operator-led founder concierge team. Its public portfolio page lists 51 named companies plus 17 stealth investments across four themes (Scalable Infrastructure, Intelligent Collaboration, Automated Workflows, Autonomy); portfolio companies include Path Robotics, Quince, Sakana AI, Tigris Data, Mem0, OpenArt, Cusp, Simular, Vizcom, and Entire. This is an API Evangelist network profile of the firm; Basis Set Ventures does not publish a public API, developer portal, or SDKs, so this record captures firm identity, web properties, and derived security posture rather than API artifacts.

51 portfolio companies 30 publish APIs here 12 properties
CompanyVenture CapitalArtificial IntelligenceMachine LearningSeed StageEarly StageAI InfrastructureAutonomous SystemsStartupsSeedSan Francisco
Portfolio Strength across 13 profiled portfolio companies on the network
3 top-rated API companies 1 exemplar · 2 strong
6 agent-ready companies 0 agent-native · 6 agent-ready
Average quality of the book:
Composite thin 37.8
Agent-Readiness agent-aware 23.5

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.

Basis Set Ventures has 51 portfolio companies tracked on the APIs.io network, of which 13 (25%) publish APIs indexed here. The remaining 17 are tracked as profiles without a published API on the network.

Its highest-rated API providers on the network are Drata, Flint, Assembled, Mem0, Workstream.

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 2 Solid coverage with minor gaps
Developing 6 Usable, with meaningful gaps to close
Thin 3 Limited public surface area
Minimal 1 Almost no public developer surface

Rest of Portfolio

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

BannerBeebleClearly AICuspDataLaneDataroElicitFerretDBInternet BackyardLeaping AINeionNormReflowReveSakanaSeen HealthSingle OriginSolvely.aiSpiceSpureeVerge

Scroll for all 21

Properties

Portfolio

Where the firm publishes its investments

Team

Partners and investing staff

Content

Blog, podcast, newsletter, and research

Firm

The firm itself

Other

Everything else declared in apis.yml

Cohort brief

Auto-generated

The 25 portfolio companies with APIs in the catalog, backed by Basis Set Ventures, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
25
of 30 on the roster
Mean Kin Score
even vs catalog
Mean Agent Readiness
15.4
+2.6 vs catalog 12.8
Spread
–
median · σ
How the 25 split by band
Exemplar 1Strong 2Developing 6Thin 5Emerging 6Minimal 5
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Access Clarity 40.9 26.5 +14.4 25
Developer Ergonomics 34.4 23.8 +10.6 25
Operational Transparency 19.7 13.2 +6.5 25
Discoverability 60.1 58 +2.1 25
Contract Quality 18.2 17.7 +0.5 25
Contract Governance 5.8 7 -1.2 25

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 16% 15% +1
MCP server (first-party) 20% 13% +7
Agent Skills 0% 0% 0
OAuth scopes 16% 12% +4
Security 100% 98% +2
Arazzo workflows 8% 2% +6
Governance rules 8% 18% -10

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Drata
  2. 2 Flint
  3. 3 Assembled
  4. 4 Mem0
  5. 5 Workstream
  6. 6 Rasa
  7. 7 Slope
  8. 8 Momentum
  9. 9 Thinking Machines
  10. 10 Snappr
Top by Agent Readiness
  1. 1 Flint {"score" => 56.3, "band" => "agent-ready"}
  2. 2 Drata {"score" => 53.1, "band" => "agent-ready"}
  3. 3 Momentum {"score" => 38, "band" => "agent-ready"}
  4. 4 Slope {"score" => 37.2, "band" => "agent-ready"}
  5. 5 Mem0 {"score" => 32.9, "band" => "agent-ready"}
  6. 6 Snappr {"score" => 29.4, "band" => "agent-ready"}
  7. 7 Openart {"score" => 27.3, "band" => "agent-aware"}
  8. 8 Rasa {"score" => 25.7, "band" => "agent-aware"}
  9. 9 Assembled {"score" => 23, "band" => "agent-aware"}
  10. 10 Tigris {"score" => 21.3, "band" => "agent-aware"}
This roster declares 30 members; 28 resolve to a provider in the catalog and 25 carry a score (89%). The figures above describe the scored members only.
Coverage caveat. 23 of 25 scored members had under half their catalog-attributable points satisfied at all (catalog_earned / catalog_max < 0.5). They are INCLUDED in the mean above. A large share here means the cohort mean is partly a measurement of how far our enrichment reached, not only of how these providers publish.Generated from the catalog build of 2 November 2026, across 37080 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Source (apis.yml)

apis.yml Raw ↑
aid: basis-set-ventures
name: Basis Set Ventures
description: Basis Set Ventures is an AI-native, early-stage venture capital firm founded in 2017 by Dr. Lan Xuezhao and headquartered in the San Francisco Bay Area. The firm invests at the seed and early
  stages in founders building artificial intelligence across AI infrastructure, autonomous systems, molecular and materials discovery, agentic development tooling, intelligent collaboration, and automated
  workflows. Basis Set announced a $250M Fund IV and describes itself as "the first capital when it's just you and your vision," pairing capital with an operator-led founder concierge team. Its public portfolio
  page lists 51 named companies plus 17 stealth investments across four themes (Scalable Infrastructure, Intelligent Collaboration, Automated Workflows, Autonomy); portfolio companies include Path Robotics,
  Quince, Sakana AI, Tigris Data, Mem0, OpenArt, Cusp, Simular, Vizcom, and Entire. This is an API Evangelist network profile of the firm; Basis Set Ventures does not publish a public API, developer portal,
  or SDKs, so this record captures firm identity, web properties, and derived security posture rather than API artifacts.
url: https://raw.githubusercontent.com/api-evangelist/basis-set-ventures/refs/heads/main/apis.yml
x-type: venture-capital
x-source: vc-portfolio
x-backed-by:
- foundry-group
x-tier: stub
x-tier-reason: portfolio-lead
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
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-18'
image: https://cdn.prod.website-files.com/681ad1f2c3ad523e8b456421/681ad1f2c3ad523e8b45662c_favicon%20256.svg
tags:
- Company
- Venture Capital
- Artificial Intelligence
- Machine Learning
- Seed Stage
- Early Stage
- AI Infrastructure
- Autonomous Systems
- Startups
- Seed
- San Francisco
tags_raw:
- Company
- Venture Capital
- Artificial Intelligence
- Machine Learning
- Seed Stage
- Early Stage
- AI Infrastructure
- Autonomous Systems
- Startups
- Machine-Learning
- Seed
- San Francisco
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
- FN: Basis Set Ventures
  url: https://www.basisset.com
common:
- type: Website
  url: https://www.basisset.com
- type: Portfolio
  url: https://www.basisset.com/portfolio
- type: Team
  url: https://www.basisset.com/team
- type: About
  url: https://www.basisset.com/basis-set-faq
- type: Blog
  url: https://bsv.medium.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/basis-set/
- type: Twitter
  url: https://x.com/basisset
- type: YouTube
  url: https://www.youtube.com/channel/UC5xM2NJvoKLJbBDHK9sobIg
- type: DomainSecurity
  url: security/basis-set-ventures-domain-security.yml
- type: LLMsTxt
  url: llms/basis-set-ventures-llms.txt
- type: Portfolio
  url: portfolio/basis-set-ventures-portfolio.yml
- type: Jobs
  url: https://jobs.basisset.com
- type: Features
  name: Fund Facts
  data:
  - name: Stage
    value: Seed / early stage ("the first capital when it's just you and your vision")
  - name: Sectors
    value: 'AI: Scalable Infrastructure, Intelligent Collaboration, Automated Workflows, Autonomy'
  - name: Founded
    value: 2017 ("An AI-native venture fund since 2017")
  - name: Latest fund
    value: $250M Fund IV (announced on homepage)
  sources:
  - https://www.basisset.com/
  - https://basisset.com/portfolio
  updated: '2026-10-18'
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence
x-category: Venture Capital

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