Venture Capital

Accel

Accel is one of the world's leading venture capital firms, founded in 1983 by Arthur Patterson and Jim Swartz and headquartered in Palo Alto, California, with additional offices in San Francisco, London, and Bangalore, India. Accel describes itself as "the first partner to exceptional teams everywhere," backing founders from seed and early stage through growth worldwide. The firm invests across enterprise software and SaaS, consumer, artificial intelligence, fintech, cybersecurity, infrastructure and developer tools, security, media, and healthcare, and operates dedicated funds for the US, Europe/Israel, and India/Southeast Asia. Accel is known for its "prepared mind" investment philosophy and for backing category-defining companies including Facebook, Slack, Dropbox, Atlassian, CrowdStrike, UiPath, Qualtrics, Spotify, Flipkart, Swiggy, Freshworks, 1Password, Vercel, Scale AI, Anthropic, and Perplexity. Its portfolio spans more than 100 unicorns, dozens of IPOs, and hundreds of acquisitions. In 2024 Accel raised a $650M fund for European and Israeli startups, and in 2025 raised a fund for India and Southeast Asia. This profile tracks Accel's identity and its portfolio graph across the API Evangelist network.

764 portfolio companies 764 publish APIs here 12 properties
Venture CapitalSeedEarly StageGrowth EquityArtificial IntelligenceEnterpriseDeveloper ToolsCybersecurityFintechUnited StatesGlobal
Portfolio Strength across 316 profiled portfolio companies on the network
59 top-rated API companies 18 exemplar · 41 strong
123 agent-ready companies 17 agent-native · 106 agent-ready
Average quality of the book:
Composite thin 40.4
Agent-Readiness agent-aware 26.0

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.

Accel has 764 portfolio companies tracked on the APIs.io network, of which 317 (41%) publish APIs indexed here. The remaining 447 are tracked as profiles without a published API on the network.

Its highest-rated API providers on the network are Krux, Ada Support, Klaviyo, Anthropic, Mux.

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 18 Complete, well-documented, and agent-ready
Strong 41 Solid coverage with minor gaps
Developing 105 Usable, with meaningful gaps to close
Lightrun1 API54.2Transcend1 API54.1Ledger Investing1 API53.6SmallStep1 API52.9ConductorOne1 API52.6Invoca1 API52.6Avito25 APIs52.3H Company1 API52.2Luciq1 API52.0ProjectDiscovery1 API52.0Podium24 APIs51.8Responsys2 APIs51.8GoCardless1 API51.7TrustArc2 APIs51.6Wallapop3 APIs51.5Qriously4 APIs51.4Sprig1 API50.9Qualtrics3 APIs50.6Campfire1 API50.3Primer2 APIs50.2ChargeBee1 API49.9Lightdash1 API49.9Axonius1 API49.8Sumo Logic1 API49.7Narvar1 API49.1Airmeet1 API49.0Sysdig2 APIs49.0Flipturn1 API48.6Leap10 APIs48.6UserTesting2 APIs48.6Folk1 API48.4MindTickle2 APIs48.3Spotify1 API48.3Val Town1 API48.3Facilio1 API48.2Twenty2 APIs47.8Aptly1 API47.6Sonatype1 API47.5CaptivateIQ1 API47.2Opal6 APIs47.2Ando1 API46.5Scale1 API46.3Gopuff1 API46.299designs1 API46.0Teya4 APIs46.0PagerDuty1 API45.9ServiceChannel2 APIs45.8Filigran2 APIs45.7Sense1 API45.7Process Street1 API45.6MyFitnessPal1 API45.5Discord3 APIs45.3Higgsfield1 API45.2Tracebit1 API45.2vlt1 API45.2Cycognito1 API45.0Dealer Dot Com7 APIs44.8Orum1 API44.8Assembly AI1 API44.7Carto1 API44.3Segment4 APIs44.3Vox Media1 API44.1Axle Energy1 API43.9Pred1 API43.8SingleStore2 APIs43.8Spreadshirt1 API43.7Securden1 API43.6Rasa2 APIs43.5Dropbox2 APIs43.4Freshworks6 APIs43.3Skydio1 API43.3Middesk1 API43.1Napkin.AI1 API43.1Imperva2 APIs42.8Zoca6 APIs42.8Commercetools3 APIs42.6DriveWealth1 API42.5Miro1 API42.5Supabase5 APIs42.5Monzo1 API42.3Tines1 API42.3Circle1 API42.0Nuvemshop1 API41.9Zenoti1 API41.9SeatGeek1 API41.6Strapi3 APIs41.6Melio1 API41.3Monte Carlo1 API41.3Testsigma1 API41.2Altinity1 API41.1Mason6 APIs41.1Braintree2 APIs40.8Bird Scooters1 API40.7VSCO1 API40.6Veza1 API40.4Spyne1 API40.2Varonis Systems1 API40.2Conduktor1 API40.1Cognite2 APIs39.9Pave Bank1 API39.7Productiv1 API39.7Facebook21 APIs39.6Tailscale1 API39.5Deliveroo9 APIs39.4Fin1 API39.4
Thin 98 Limited public surface area
Chainalysis12 APIs39.2Synthesia1 API39.2Acko1 API39.1Gloat1 API39.1Hopin1 API39.1Qwilt3 APIs39.1Split2 APIs39.0Chronicle1 API38.8Deepnote1 API38.7Public1 API38.4Tweed1 API38.3Medigo1 API38.1Atrato1 API37.9Checkr1 API37.8Vectra1 API37.6Demisto1 API37.4Sorare1 API37.4Propeller Aero1 API37.3ReadMe.io3 APIs37.2Tracxn2 APIs37.2Xendit1 API37.2Eagle Eye Networks1 API37.1Sapiom1 API37.1Amobee1 API37.0Cursor1 API36.8Ola Cabs5 APIs36.8CareStack1 API36.7Bryter3 APIs36.6Polar1 API36.6Qlik69 APIs36.6Bird6 APIs36.3EdgeDB3 APIs36.3Doctor Droid1 API35.5Pismo1 API35.2Cyera1 API35.1Plex Systems5 APIs34.9Stairwell1 API34.6Gamma1 API34.5GoFundMe1 API34.5Noosh2 APIs34.5Flipkart1 API34.4Instana1 API34.3Nuitee1 API34.2Scratchpad1 API34.1Juspay1 API33.8Trulia2 APIs33.8Fever1 API33.1Recraft1 API33.0Jifflenow1 API32.9Tenderly6 APIs32.9PeopleDoc9 APIs32.6WyzAnt1 API32.5Rows1 API32.4Guru1 API32.2Yodlee1 API32.1DecisionLink8 APIs31.9Tessian1 API31.7Zomentum1 API31.6BetterCloud5 APIs31.5Corelight1 API31.5Dovetail1 API31.5Vinculum2 APIs31.2Despegar6 APIs31.1Funding Circle1 API31.1Nory1 API30.8SimpliVity1 API30.7Eder Labs1 API30.3FalconX1 API30.0Raycast1 API30.0Amagi2 APIs29.8Rhythms1 API29.7Illumio1 API29.6Ironclad1 API29.6ClockWise1 API29.5Code 421 API29.4Personio1 API29.4Styra1 API29.4Elements1 API28.9Legendary1 API28.8Smashgg1 API28.7Whimsical1 API28.6Radar1 API28.5Spendflo1 API28.5Veriff15 APIs28.2Nansen1 API28.1Centaur Labs1 API28.0OzForex1 API28.0Credgenics1 API27.9Kevin.1 API27.9FRVR1 API27.7Lookout1 API27.7Snaptrude1 API27.7Centrify1 API27.2Packlink6 APIs27.1RapidCanvas1 API27.1WIBMO1 API27.1Akridata1 API26.6Payfit1 API26.5
Emerging 50 Early or largely undocumented
Minimal 4 Almost no public developer surface
Unrated 1 Not yet scored

Properties

Portfolio

Where the firm publishes its investments

Team

Partners and investing staff

Content

Blog, podcast, newsletter, and research

Firm

The firm itself

Cohort brief

Auto-generated

The 653 portfolio companies with APIs in the catalog, backed by Accel, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
653
of 764 on the roster
Mean Kin Score
25.3
+0.9 vs catalog 24.4
Mean Agent Readiness
13.2
+0.5 vs catalog 12.7
Spread
0–89.3
median 18.5 · σ 19
How the 653 split by band
Exemplar 18Strong 41Developing 106Thin 109Emerging 184Minimal 195
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Access Clarity 29.9 27.2 +2.7 653
Operational Transparency 16.4 14.4 +2 653
Developer Ergonomics 25.2 23.8 +1.4 653
Discoverability 61.7 61.5 +0.2 653
Contract Governance 6.5 6.6 -0.1 653
Contract Quality 20.1 20.4 -0.3 653

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) 14% 11% +3
MCP server (first-party) 18% 13% +5
Agent Skills 0% 0% 0
OAuth scopes 13% 12% +1
Security 97% 96% +1
Arazzo workflows 3% 2% +1
Governance rules 12% 13% -1

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 89.3
  2. 2 Ada 83.1
  3. 3 Klaviyo 79.1
  4. 4 Anthropic 77.8
  5. 5 Mux 77.7
  6. 6 CData 75.8
  7. 7 Squarespace 73.9
  8. 8 Microsoft Azure 73.3
  9. 9 Merge 72
  10. 10 Snyk 71.6
Top by Agent Readiness
  1. 1 CData 66.5
  2. 2 Webflow 61.8
  3. 3 Algolia 61.5
  4. 4 Perplexity 60.4
  5. 5 Checkly 60
  6. 6 Ando 59.2
  7. 7 G2 57.7
  8. 8 Dash0 57.7
  9. 9 Poggio Labs 57.7
  10. 10 Campfire 57.7
This roster declares 764 members; 737 resolve to a provider in the catalog and 653 carry a score (89%). The figures above describe the scored members only.Generated from the catalog build of 22 September 2026, across 27674 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: accel
name: Accel
description: >-
  Accel is one of the world's leading venture capital firms, founded in 1983 by
  Arthur Patterson and Jim Swartz and headquartered in Palo Alto, California,
  with additional offices in San Francisco, London, and Bangalore, India. Accel
  describes itself as "the first partner to exceptional teams everywhere,"
  backing founders from seed and early stage through growth worldwide. The firm
  invests across enterprise software and SaaS, consumer, artificial
  intelligence, fintech, cybersecurity, infrastructure and developer tools,
  security, media, and healthcare, and operates dedicated funds for the US,
  Europe/Israel, and India/Southeast Asia. Accel is known for its "prepared
  mind" investment philosophy and for backing category-defining companies
  including Facebook, Slack, Dropbox, Atlassian, CrowdStrike, UiPath, Qualtrics,
  Spotify, Flipkart, Swiggy, Freshworks, 1Password, Vercel, Scale AI, Anthropic,
  and Perplexity. Its portfolio spans more than 100 unicorns, dozens of IPOs,
  and hundreds of acquisitions. In 2024 Accel raised a $650M fund for European
  and Israeli startups, and in 2025 raised a fund for India and Southeast Asia.
  This profile tracks Accel's identity and its portfolio graph across the API
  Evangelist network.
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/accel.png
tags:
  - Venture Capital
  - Seed
  - Early Stage
  - Growth Equity
  - Artificial Intelligence
  - Enterprise
  - Developer Tools
  - Cybersecurity
  - Fintech
  - United States
  - Global
url: >-
  https://raw.githubusercontent.com/api-evangelist/accel/refs/heads/main/apis.yml
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.23'
apis: []
common:
  - type: Website
    url: https://www.accel.com/
  - type: Portfolio
    url: https://www.accel.com/companies
  - type: Portfolio
    url: portfolio/accel-portfolio.yml
  - type: Team
    url: https://www.accel.com/team
  - type: Team
    url: team/accel-team.yml
  - type: News
    url: https://www.accel.com/news
  - type: Podcast
    url: https://www.accel.com/podcasts
  - type: Jobs
    url: https://jobs.accel.com/
  - type: Contact
    url: https://www.accel.com/contact-us
  - type: LinkedIn
    url: https://www.linkedin.com/company/accel-vc/
  - type: Twitter
    url: https://x.com/accel
  - type: Crunchbase
    url: https://www.crunchbase.com/organization/accel
  - type: Features
    data:
      - "Stage: Seed, Early (Series A), Growth"
      - "Sectors: enterprise software & SaaS, consumer, AI, fintech, cybersecurity, infrastructure & developer tools, security, media, healthcare"
      - "Geography: Global (United States, Europe, Israel, India, Southeast Asia)"
      - "AUM: ~$20B+ (third-party estimate, not firm-published)"
      - "Founded: 1983"
      - "Founders: Arthur Patterson, Jim Swartz"
      - "HQ: Palo Alto, CA"
      - "Offices: Palo Alto, San Francisco, London, Bangalore"
      - "Recent funds: $650M Europe/Israel (2024); India/Southeast Asia fund (2025)"
    sources:
      - https://www.accel.com/
      - https://en.wikipedia.org/wiki/Accel_(company)
    updated: '2026-07-17'
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
  - FN: APIs.json
    url: http://apisjson.org
  - FN: Accel
    url: https://www.accel.com/

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