API Evangelist Reports
Measured research by Kin Lane — every company in a report named and banded on one public rubric, read from evidence a machine can check rather than from anybody's marketing, and revised on a cycle rather than published once. Every report ships a machine-readable AI data bundle, so you can interrogate the research instead of taking it on trust. Standard Reports are free. If you would rather start from the problem you are trying to solve, start there.
Trend Reports 80 $500
The State of Mobility APIs
93 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 87 (94%) pub...
The State of Biotechnology APIs
20 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 18 (90%) pub...
The State of Space and Aerospace APIs
**This market has been writing interoperability standards since 1982 and it is the second-best governed of any measured in this research.** 329 org...
The State of Weather and Geospatial APIs
The oldest API market on the public web, and the best-governed one measured anywhere in this research. 495 organisations classified; the 115 in the...
The State of Creator Economy APIs
**The most programmable industry section API Evangelist has measured.** 843 organisations classified; the 191 in the upper three bands are the larg...
The State of Gaming APIs
**There is an API market in gaming and the games are not in it.** 679 organisations carry the classification; the 66 in the upper three bands are g...
The State of Climate, Energy and Sustainability APIs
**Sustainability is not a market. It is a label applied across four of them** — environmental data, energy, carbon and ESG reporting, and the circu...
The State of HR and Workforce APIs
869 organisations carry an HR and workforce classification; this report covers the 170 in the upper three bands. **HR is the one market in this res...
The State of IoT APIs
861 organisations carry an IoT classification; this report covers the 165 in the upper three bands. **IoT has more standards than any market API Ev...
The State of Government APIs
850 organisations carry a government classification in the API Evangelist catalog; this report is about the 63 in the upper three bands — the ones ...
The State of Where the Spend Lands
146 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 79 (54%) pu...
The State of the Sales Handoff APIs
156 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 86 (55%) pu...
The State of Retention and Advocacy APIs
56 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 32 (57%) pub...
The State of Paid Media APIs — The Sell Side
104 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 40 (38%) pu...
The State of Paid Media APIs — The Buy Side
252 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 100 (40%) p...
The State of Owned Channel APIs
135 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 90 (67%) pu...
The State of Marketing Orchestration APIs
551 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 278 (50%) p...
The State of Marketing APIs
814 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 419 (51%) p...
The State of Earned and Social APIs
116 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 52 (45%) pu...
The State of Demand Capture APIs
115 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 67 (58%) pu...
The State of Content and Brand APIs
115 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 49 (43%) pu...
The State of Audience and Measurement APIs
263 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 157 (60%) p...
The State of Revenue APIs
517 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 300 (58%) p...
The State of Retention and Expansion APIs
20 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 10 (50%) pub...
The State of Quote-to-Cash APIs
23 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 15 (65%) pub...
The State of Revenue Plumbing APIs
66 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 46 (70%) pub...
The State of Pipeline and Forecast APIs
178 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 93 (52%) pu...
The State of Engagement and Outreach APIs
221 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 148 (67%) p...
The State of Data and Prospecting APIs
234 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 142 (61%) p...
The State of Conversation and Coaching APIs
122 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 56 (46%) pu...
The State of API Authentication
Forty identity, authentication and authorization providers scored on the same public rubric applied to Stripe and to every bank, insurer and teleco...
The State of Robotics & Autonomous Systems APIs
538 robotics and autonomous systems companies scored — industrial and warehouse robotics (Rockwell Automation 41.6, Inductive Automation 43.0, ABB ...
The State of API Clients
Thirty-five API clients read against the same public rubric applied to everyone else in the catalog — the client platforms that operate a hosted se...
The State of API Testing
Thirty-seven API testing tools and platforms scored on the same public rubric as everyone else in the catalog, read straight from the machine-reada...
The State of Legal & Compliance APIs
410 legal and compliance companies scored — e-signature and document automation (DocuSign 63.6, SignNow 53.3, PandaDoc 52.4, DocuSeal 57.8, Anvil 5...
The State of Education & EdTech APIs
810 education and EdTech organizations scored — learning platforms (Canvas LMS 74.6, Adobe Captivate 60.5, Pluralsight 54.0, Google Classroom 51.6,...
The State of API Documentation
Twenty-nine API documentation vendors and open source projects scored on the same public rubric as everyone else in the catalog, read straight from...
The State of Blockchain & Crypto APIs
1,141 blockchain and digital-asset companies scored — chains and layer 2s (Solana 70.0, Aptos 62.8, Algorand 58.1, Arweave 58.8, Akash, Hedera, Ava...
The State of Marketing & Advertising APIs
1,310 marketing and advertising companies scored — the buying platforms (Google Ads 59.1, Display & Video 360 61.5, Search Ads 360 61.1, Campaign M...
The State of Data & Analytics APIs
1,290 data and analytics companies scored — warehouses, lakehouses and query engines (Databricks 65.8, Azure Synapse 62.7, Amazon Redshift 53.8, Bi...
The State of Digital Health APIs
1,272 digital health companies scored — the FHIR-native backends and record networks (Medplum 69.6, Aidbox 56.1, 1upHealth 67.6, Particle Health 54...
The State of Compute & Hardware APIs
905 provider records across the compute stack scored on the same rubric as Stripe — the chip designers, foundries, EDA vendors and process-equipmen...
The State of Supply Chain APIs
1,161 supply chain and procurement companies scored — the parcel and last-mile platforms (Onfleet 70.3, parcelLab 69.5, Sendcloud 65.1, Sendle 61.8...
The State of API Management
Thirty-six API management vendors scored on the same public rubric as everyone else in the catalog, read straight from the machine-readable evidenc...
The State of Cybersecurity APIs
1,964 cybersecurity and identity companies scored — identity and access (Okta 71.4, 1Password 71.7, Auth0 67.2, WorkOS 65.5, Stytch 66.8, Kinde 69....
The State of Developer Tools APIs
2,877 developer tools and DevOps companies scored — the cloud platforms (Google Cloud Platform 81.0, the highest score in the entire catalog, Fastl...
The State of Artificial Intelligence APIs
1062 companies scored on the same rubric applied to Stripe, Twilio and GitHub — and every one of them named and banded, not a shortlist. 940 (89%) ...
The State of Canadian Travel APIs
Nine Canadian travel and aviation organizations — Air Canada and WestJet, Porter and Transat, the Crown corporation VIA Rail, the Montreal API-nati...
The State of Australian Travel APIs
Eleven Australian travel and aviation organizations — Qantas and Jetstar, Virgin Australia, Rex, the agency and TMC layer (Flight Centre, Helloworl...
The State of UK Travel APIs
Fourteen UK travel and aviation organizations, scored on the same rubric as Stripe and read straight from the machine-readable evidence. They are T...
The State of US Travel APIs
Thirty US travel and aviation organizations — Sabre in the GDS oligopoly, the carriers (United, American, Delta, Southwest, JetBlue, Alaska), the O...
The State of Canadian Energy APIs
Eighteen Canadian energy organizations — the provincial Crown corporations and investor-owned utilities (Hydro-Québec, BC Hydro, SaskPower, Manitob...
The State of UK Energy APIs
Twenty-six UK energy organizations — the suppliers (Octopus, Centrica's British Gas, EDF, E.ON Next, OVO, ScottishPower, Good Energy, Utilita), the...
The State of US Energy APIs
Sixty US energy organizations — the investor-owned utilities that bill most of the country (Duke, Southern, Dominion, Exelon, AEP, NextEra, Entergy...
The State of Australian Energy APIs
Twenty-four Australian energy organizations — the retailers bound by the Consumer Data Right (AGL, Origin, EnergyAustralia, Alinta, Red, Simply, Po...
The State of Headless APIs
One hundred and eight headless providers scored on the same rubric as Stripe, read straight from the machine-readable evidence — thirty-four headle...
The State of Canadian Real Estate APIs
Fourteen Canadian real estate organizations — CREA and REALTOR.ca with the Data Distribution Facility that syndicates member boards' listings in pl...
The State of Australian Real Estate APIs
Eighteen Australian real estate organizations — the portal duopoly (REA Group's realestate.com.au and Domain) and challenger View.com.au, PEXA's el...
The State of UK Real Estate APIs
Twenty-four UK real estate organizations — the portal duopoly (Rightmove, Zoopla) and its agent-owned challenger OnTheMarket, the agency CRM layer ...
The State of US Real Estate APIs
Forty-five US real estate organizations — the portals (Zillow, Realtor.com, Redfin, Homes.com), the listing-data infrastructure that federates roug...
The State of Telecom APIs
Eighty-three telecom organizations worldwide — mobile network operators across every major market (AT&T, Verizon, T-Mobile, Vodafone, Deutsche Tele...
The State of Canadian Insurance APIs
Twenty Canadian insurance organizations — the P&C oligopoly (Intact, Definity, Co-operators, Desjardins, Wawanesa, CAA), the life and health trio a...
The State of Australian Insurance APIs
Twenty Australian insurance organizations — the general-insurance oligopoly (IAG, Suncorp, QBE, Youi, Budget Direct), the separately regulated priv...
The State of UK Insurance APIs
Thirty-five UK insurance organizations — the composite and specialty carriers (Aviva, Admiral, Direct Line, RSA, Hiscox, Beazley, Convex), the life...
The State of US Insurance APIs
Seventy-nine US insurance organizations — the national P&C and life carriers (State Farm, Allstate, GEICO, Travelers, MetLife, Cigna, Humana), the ...
The State of Canadian Healthcare APIs
Ten Canadian healthcare organizations — Canada Health Infoway's pan-Canadian FHIR terminology stewardship, the consolidating incumbents (TELUS Heal...
The State of Australian Healthcare APIs
Twelve Australian healthcare organizations — the Australian Digital Health Agency's My Health Record and national infrastructure, the GP-software d...
The State of UK Healthcare APIs
Thirteen UK healthcare organizations — NHS England's national FHIR API platform (PDS, GP Connect, EPS, e-Referrals), the GP-clinical duopoly (EMIS ...
The State of US Healthcare APIs
75 US healthcare companies scored on the same rubric applied to Stripe, Twilio and GitHub — every one named and banded. The most standardised marke...
The State of Canadian Payments APIs
Fourteen Canadian-headquartered payment companies — the global-scale exception Nuvei, incumbent acquirer Moneris, the API-native SMB and embedded-f...
The State of Australian Payments APIs
Twenty Australian-headquartered payment companies — ASX-listed merchant acquirers (Tyro, Zeller), the NPP-native money-movement pack (Zepto, Azupay...
The State of UK Payments APIs
Thirty-two UK-headquartered payment companies — the open-banking payment-initiation frontier (TrueLayer, Token.io, Yapily, Volt, GoCardless), card ...
The State of US Payments APIs
Sixty-eight US-headquartered payment companies — the four card networks, the acquirer/processor layer, the modern PSP and issuer-processor frontier...
The State of Canadian Banking APIs
Forty-two Canadian institutions — the Big Six, the other Schedule I and II banks, the digital arms, the crown bank, the largest credit unions and c...
The State of US Banking APIs
A hundred and thirteen US institutions — money-center banks, super-regionals and regionals, the fifteen largest credit unions, the neobanks, the ba...
The Agentic Readiness of Venture
The flagship that sits above the Portfolio Report series. Where each per-fund report answers "how good is this fund's API book?", this one answers ...
The State of UK Banking APIs
Sixty UK banks and building societies, scored on the same rubric as Stripe — read straight from the machine-readable evidence, not the marketing. T...
The State of Market Data APIs
Fifty-eight market data providers, scored on the same rubric as Stripe, with the report concentrated on the twenty-eight in the upper three bands —...
The State of Australian Banking APIs
Fifty Australian banks, scored on the same rubric as Stripe — read straight from the machine-readable evidence, not the marketing. The single findi...
The State of Spectral in API Pipelines
A census, not a survey — 1,005 public GitHub repositories running Spectral in CI, read and characterized. The finding: most teams turned the linter...
Standard Reports 12 Free
The A2A Standard
The ninth API Evangelist Standard Report, on the Agent2Agent Protocol — the Linux Foundation standard for how independent AI agents discover and de...
The ARD Standard
Agentic Resource Discovery is nine weeks old, and it is the first credible answer to the question every agentic protocol skipped: before your agent...
The OAuth 2.0 Standard
The seventh API Evangelist Standard Report, on the authorization framework the API economy is built on. Measured across the security schemes of 14,...
The GraphQL Standard
The twelfth API Evangelist Standard Report, and the strongest evidence base of the three published together — because unlike Arazzo and Overlay, Gr...
The OpenAPI Overlay Standard
The eleventh API Evangelist Standard Report, and the counterweight to the Arazzo report published beside it. The OpenAPI Overlay Specification desc...
The OpenID Connect Standard
The sixth API Evangelist Standard Report. OpenID Connect is the most successful identity protocol ever deployed — every Sign in with Google, every ...
The Model Context Protocol Standard
The fifth API Evangelist Standard Report, on the fastest-adopted specification in the history of APIs. MCP's first dated version shipped 2024-11-05...
The Arazzo Standard
The tenth API Evangelist Standard Report, and the first measured a different way — which is itself part of the finding. Arazzo is the OpenAPI Initi...
The JSON Schema Standard
The fourth API Evangelist Standard Report, and the largest measurement in this research line by two orders of magnitude. JSON Schema is the most wi...
The AsyncAPI Standard
The third API Evangelist Standard Report, remeasured in August 2026 — and this edition opens with the number that changed. Across 26,722 providers ...
The OpenAPI Standard
The second API Evangelist Standard Report, and the largest independent corpus of real-world OpenAPI anyone has measured: 14,257 documents published...
The CAMARA Standard
CAMARA is the only sector-wide API standard scored so far that an industry built for itself with no regulatory mandate behind it — specifications a...
Portfolio Reports 26 $750
The Sequoia Capital API Portfolio
Sequoia Capital's public portfolio resolves to 118 companies in the catalog; a 19-company core was deepened outward to 72 that ship a public API, a...
The Qiming Venture Partners API Portfolio
Qiming Venture Partners' public portfolio resolves into the catalog, and 13 of its companies ship a public API — every one scored here on the same ...
The DCVC API Portfolio
DCVC — Data Collective Venture Capital — backs hard science and hard infrastructure, and its public portfolio resolves to just 36 companies that sh...
The Bloomberg Beta API Portfolio
Bloomberg Beta is a deliberately small, early-stage fund, and its public portfolio resolves to 37 companies that ship a public API — every one scor...
The Partech API Portfolio
Partech is one of Europe's longest-running venture platforms, and of its companies that resolve into the catalog, 38 ship a public API — every one ...
The Canaan Partners API Portfolio
Canaan Partners' public portfolio resolves into the catalog, and 38 of its companies ship a public API — every one scored here on the same rubric a...
The Speedinvest API Portfolio
Speedinvest's public portfolio resolves to hundreds of companies; 56 of them ship a public API, and every one is scored here on the same rubric app...
The Seedcamp API Portfolio
Seedcamp's public portfolio resolves to a broad list of European seed and early-stage companies; 74 of them ship a public API, and every one is sco...
The Menlo Ventures API Portfolio
Menlo Ventures led the round in Anthropic — the company that authored the Model Context Protocol the entire agentic ecosystem now standardizes on. ...
The Redpoint Ventures API Portfolio
Redpoint Ventures's public portfolio resolves to 67 companies that ship a public API, and every one is scored here on the same rubric applied to St...
The Kleiner Perkins API Portfolio
Kleiner Perkins's public portfolio resolves into the catalog to 63 companies that ship a public API, and every one is scored here on the same rubri...
The Bain Capital Ventures API Portfolio
Bain Capital Ventures's portfolio resolves into the catalog, and 79 of its companies ship a public API — every one scored here on the same rubric a...
The Norwest Venture Partners API Portfolio
Norwest Venture Partners' public portfolio resolves into the catalog, and 85 of its companies ship a public API — every one scored here on the same...
The Index Ventures API Portfolio
Index Ventures's public portfolio resolves to hundreds of companies; 98 of them ship a public API, and every one is scored here on the same rubric ...
The SoftBank Vision Fund API Portfolio
The SoftBank Vision Fund is the largest pool of growth capital ever assembled for technology; 87 of its portfolio companies ship a public API, and ...
The General Catalyst API Portfolio
General Catalyst's public portfolio resolves to hundreds of companies; 114 of them ship a public API, and every one is scored here on the same rubr...
The GV (Google Ventures) API Portfolio
GV — Alphabet's independent venture arm — resolves to a broad, later-stage, category-leader book in the catalog, and 121 of its companies ship a pu...
The Battery Ventures API Portfolio
Battery Ventures' portfolio resolves to hundreds of companies; 108 of them ship a public API, and every one is scored here on the same rubric appli...
The Bessemer Venture Partners API Portfolio
Bessemer Venture Partners' public portfolio resolves to hundreds of companies; 128 of them ship a public API, and every one is scored here on the s...
The Lightspeed API Portfolio
Lightspeed Venture Partners' public portfolio resolves to hundreds of companies; 144 of them ship a public API, and every one is scored here on the...
The Techstars API Portfolio
Techstars has run accelerator programs across dozens of cities for more than a decade, and its public portfolio resolves to 141 companies that ship...
The 500 Global API Portfolio
500 Global's public portfolio resolves to a very large book; 225 of its companies ship a public API, and every one is scored here on the same rubri...
The Accel API Portfolio
Accel's public portfolio resolves to a large set of companies; 196 of them ship a public API, and every one is scored here on the same rubric appli...
The Insight Partners API Portfolio
Insight Partners' public portfolio resolves to a large book of software companies; 214 of them ship a public API, and every one is scored here on t...
The Y Combinator API Portfolio
Y Combinator's public company list resolves to more than eight hundred companies; 190 of them ship a public API, and every one is scored here on th...
The a16z API Portfolio
Andreessen Horowitz's public investment list resolves to more than a thousand companies; 242 of them ship a public API and 241 carry a Kin Score, e...
Profile Reports 10 $1500
Workday — Profile Report
Account intelligence on Workday for the go-to-market team selling into it. Workday ranks 51st of 819 Fortune 1000 companies on AI investment — 8.1×...
Postman — Profile Report
Account intelligence on Postman for the go-to-market team selling into it. Postman ranks 188th of 932 Fortune 1000 companies on AI investment — 4.0...
Avalara — Profile Report
Account intelligence on Avalara for the go-to-market team selling into it. Avalara ranks 150th of 932 Fortune 1000 companies on AI investment — 4.6...
Oracle — Profile Report
Account intelligence on Oracle for the go-to-market team selling into it. Its public API surface scores 67.2 on the Kin Score, fourteenth in a 39-c...
Palo Alto Networks — Profile Report
Account intelligence on Palo Alto Networks for the go-to-market team selling into it. It ranks 20th of 932 Fortune 1000 companies on AI investment ...
ServiceNow — Profile Report
Account intelligence on ServiceNow for the go-to-market team selling into it. ServiceNow ranks 66th of 932 Fortune 1000 companies on AI investment ...
Adobe — Profile Report
Account intelligence on Adobe for the go-to-market team selling into it. Adobe ranks first of 932 Fortune 1000 companies on AI investment — 11.5× t...
Autodesk — Profile Report
Account intelligence on Autodesk for the go-to-market team selling into it. Autodesk is one of the strongest combined profiles in the Fortune 1000:...
Salesforce — Profile Report
Account intelligence on Salesforce for the go-to-market team selling into it — and a genuinely different profile from most Fortune 1000 accounts. S...
JPMorgan Chase — Profile Report
Account intelligence on JPMorgan Chase for the go-to-market team selling into it. The account is read from two directions and the gap between them ...
About API Evangelist Reports
These differ from a blog post or a vendor white paper in four ways: every company in the roster is named and banded rather than cherry-picked, the scores come from one public rubric you can run yourself, no sponsor steers the conclusions, and each report is a living document carrying a version and an "as of" date. Buy once and you get every future revision of that report.