Venture Capital

Kleiner Perkins

Kleiner Perkins is one of Silicon Valley's oldest and most storied venture capital firms, founded in 1972 by Eugene Kleiner and Tom Perkins and headquartered on Sand Hill Road in Menlo Park, California, with additional offices in San Francisco and Shanghai. Across more than five decades and 21 venture funds plus 6 growth funds, the firm has invested over $10 billion and backed more than 900 ventures, including foundational companies such as Amazon, Google, Genentech, Electronic Arts, Juniper Networks, Intuit, Spotify, Figma, Robinhood, DoorDash, Duolingo and Databricks. Kleiner Perkins partners with founders from inception through IPO and beyond across early and growth stages, with seed rounds averaging roughly $4-5M and Series A rounds around $17-18M. In 2026 the firm announced its twenty-second venture fund, KP22, a $1B early-stage fund, alongside $2.5B in new growth funds. Current investment focus centers on artificial intelligence and AI safety, enterprise software, developer tools and infrastructure, healthcare and biotech, fintech, hardtech and autonomous systems, and cybersecurity, with a thesis that the right idea, team and partners can create an entirely new industry.

227 portfolio companies 227 publish APIs here 13 properties
Venture CapitalEarly StageGrowth EquityArtificial IntelligenceDeveloper ToolsInfrastructureEnterprise SoftwareFintechHealthcareSilicon Valley
Portfolio Strength across 97 profiled portfolio companies on the network
26 top-rated API companies 10 exemplar · 16 strong
46 agent-ready companies 2 agent-native · 44 agent-ready
Average quality of the book:
Composite thin 41.4
Agent-Readiness agent-aware 27.1

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.

Kleiner Perkins has 227 portfolio companies tracked on the APIs.io network, of which 97 (43%) publish APIs indexed here. The remaining 130 are tracked as profiles without a published API on the network.

Its highest-rated API providers on the network are EdgeSpring, Anthropic, DoorDash, DocuSign, Parallel.

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 10 Complete, well-documented, and agent-ready
Strong 16 Solid coverage with minor gaps
Developing 25 Usable, with meaningful gaps to close
Thin 26 Limited public surface area
Emerging 18 Early or largely undocumented
Minimal 2 Almost no public developer surface

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 177 portfolio companies with APIs in the catalog, backed by Kleiner Perkins, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
177
of 227 on the roster
Mean Kin Score
even vs catalog
Mean Agent Readiness
15.9
+3.1 vs catalog 12.8
Spread
–
median · σ
How the 177 split by band
Exemplar 10Strong 16Developing 25Thin 27Emerging 46Minimal 53
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Operational Transparency 19.8 13.2 +6.6 177
Developer Ergonomics 29.9 23.8 +6.1 177
Contract Quality 23.6 17.7 +5.9 177
Discoverability 60.4 58 +2.4 177
Access Clarity 28.9 26.5 +2.4 177
Contract Governance 7.6 7 +0.6 177

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) 22% 15% +7
MCP server (first-party) 20% 13% +7
Agent Skills 0% 0% 0
OAuth scopes 15% 12% +3
Security 94% 98% -4
Arazzo workflows 6% 2% +4
Governance rules 21% 18% +3

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 Salesforce
  2. 2 Anthropic
  3. 3 Doordash
  4. 4 Docusign
  5. 5 Parallel
  6. 6 Google
  7. 7 Instacart
  8. 8 Profound
  9. 9 IBM
  10. 10 Enphase Energy
Top by Agent Readiness
  1. 1 Parallel {"score" => 66.1, "band" => "agent-ready"}
  2. 2 Databricks {"score" => 58.9, "band" => "agent-ready"}
  3. 3 Nooks {"score" => 58.7, "band" => "agent-ready"}
  4. 4 Profound {"score" => 58.2, "band" => "agent-ready"}
  5. 5 Figma {"score" => 57.8, "band" => "agent-ready"}
  6. 6 Huntress {"score" => 56.5, "band" => "agent-ready"}
  7. 7 Reevo {"score" => 56.5, "band" => "agent-ready"}
  8. 8 Granola {"score" => 54.8, "band" => "agent-ready"}
  9. 9 Salesforce {"score" => 54.7, "band" => "agent-ready"}
  10. 10 Brex {"score" => 53, "band" => "agent-ready"}
This roster declares 227 members; 223 resolve to a provider in the catalog and 177 carry a score (79%). The figures above describe the scored members only.
Coverage caveat. 151 of 177 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: kleiner-perkins
name: Kleiner Perkins
description: >-
  Kleiner Perkins is one of Silicon Valley's oldest and most storied venture
  capital firms, founded in 1972 by Eugene Kleiner and Tom Perkins and
  headquartered on Sand Hill Road in Menlo Park, California, with additional
  offices in San Francisco and Shanghai. Across more than five decades and 21
  venture funds plus 6 growth funds, the firm has invested over $10 billion and
  backed more than 900 ventures, including foundational companies such as Amazon,
  Google, Genentech, Electronic Arts, Juniper Networks, Intuit, Spotify, Figma,
  Robinhood, DoorDash, Duolingo and Databricks. Kleiner Perkins partners with
  founders from inception through IPO and beyond across early and growth stages,
  with seed rounds averaging roughly $4-5M and Series A rounds around $17-18M. In
  2026 the firm announced its twenty-second venture fund, KP22, a $1B early-stage
  fund, alongside $2.5B in new growth funds. Current investment focus centers on
  artificial intelligence and AI safety, enterprise software, developer tools and
  infrastructure, healthcare and biotech, fintech, hardtech and autonomous
  systems, and cybersecurity, with a thesis that the right idea, team and partners
  can create an entirely new industry.
x-type: venture-capital
x-category: Venture Capital
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://www.kleinerperkins.com/brand-assets/
created: '2026-07-17'
modified: '2026-10-06'
specificationVersion: '0.23'
tags:
  - Venture Capital
  - Early Stage
  - Growth Equity
  - Artificial Intelligence
  - Developer Tools
  - Infrastructure
  - Enterprise Software
  - Fintech
  - Healthcare
  - Silicon Valley
apis: []
common:
  - url: https://www.kleinerperkins.com/feed/
    type: BlogRSS
  - type: Website
    url: https://www.kleinerperkins.com
  - type: Portfolio
    url: https://www.kleinerperkins.com/partnerships/
  - type: Portfolio
    url: portfolio/kleiner-perkins-portfolio.yml
  - type: Team
    url: https://www.kleinerperkins.com/people/
  - type: Team
    url: team/kleiner-perkins-team.yml
  - type: InvestmentThesis
    url: https://www.kleinerperkins.com/perspectives/
  - type: Blog
    url: https://www.kleinerperkins.com/perspectives/
  - type: About
    url: https://www.kleinerperkins.com/about/
  - type: LinkedIn
    url: https://www.linkedin.com/company/kleinerperkins/
  - type: Twitter
    url: https://x.com/kleinerperkins
  - type: YouTube
    url: https://www.youtube.com/@KleinerPerkinsVideos
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/kleiner-perkins-caufield-byers
  - type: Features
    data:
      - 'Stage: Early stage (seed, Series A) through growth'
      - 'Typical check: seed rounds avg ~$4-5M; Series A rounds avg ~$17-18M'
      - 'Sectors: AI & AI safety, enterprise software, developer tools & infrastructure, healthcare & biotech, fintech, hardtech, cybersecurity'
      - 'Geography: United States (Silicon Valley) with global reach; offices in Menlo Park, San Francisco, Shanghai'
      - 'AUM: over $10B invested across 21 venture + 6 growth funds; KP22 = $1B (2026) + $2.5B growth funds (2026)'
      - 'Founded: 1972'
      - 'HQ: Menlo Park, California (Sand Hill Road)'
      - 'Ventures backed: 900+'
    sources:
      - https://www.kleinerperkins.com/about/
      - https://en.wikipedia.org/wiki/Kleiner_Perkins
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
    url: https://apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Kleiner Perkins
    url: https://www.kleinerperkins.com

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  • cohort_statsPRO — the portfolio as a scored cohort.
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  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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