API Evangelist Sector Report
The State of US Travel APIs
30 US travel organizations scored (avg 34.3) — the strongest of the four travel markets, and still a sector where the companies that own the customer publish worst. Expedia scores 8.5 and Hertz 3.5 while the OpenTravel Alliance tops the market at 58.3 and the FAA reaches 56.3. Idempotency is 1 of 30, in an industry that books, pays, changes and cancels.
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US Travel & Aviation
Grouped by Kin Score band and ranked by composite score within each, with the separate agent-readiness score alongside. Click the scores on any row to open the full facet and dimension breakdown behind both numbers, and click again to close it.
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30 providers
Developing 12 45–59.9 Real signal across most facets with visible, nameable gaps.
1
OpenTravel Alliance Developing agent native Industry Bodies & Standards
The OpenTravel Alliance is a volunteer, non-profit travel technology standards body headquartered in Melbourne, Florida, United States. Since 1999 it has pub...
Composite
58.3
Agent
75.9
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 58.3/100 · developing
Contract Quality
19.8 / 25
Developer Ergonomics
14.8 / 20
Commercial Clarity
8.9 / 20
Operational Transparency
4.4 / 13
Governance
1.6 / 12
Discoverability
8.8 / 10
Agent readiness — 76/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
7 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
2
Sabre Developing agent ready GDS & Distribution
Sabre Corporation is a leading technology provider for the global travel industry, operating one of the world's largest travel marketplaces through its Globa...
Composite
57.2
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 57.2/100 · developing
Contract Quality
18.4 / 25
Developer Ergonomics
10.4 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
3.4 / 13
Governance
10.4 / 12
Discoverability
8.8 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
3
Airbnb Developing agent native OTAs & Metasearch
Airbnb is the world's leading home-sharing and short-term rental marketplace, connecting hosts who offer accommodations and experiences with guests worldwide...
Composite
56.8
Agent
56.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 56.8/100 · developing
Contract Quality
19.0 / 25
Developer Ergonomics
4.3 / 20
Commercial Clarity
12.1 / 20
Operational Transparency
5.5 / 13
Governance
7.9 / 12
Discoverability
8.0 / 10
Agent readiness — 56/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
7 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
6 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
4
Federal Aviation Administration Developing agent native Regulators
The Federal Aviation Administration (FAA) is the United States civil aviation authority, an operating administration of the U.S. Department of Transportation...
Composite
56.3
Agent
75.9
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 56.3/100 · developing
Contract Quality
12.6 / 25
Developer Ergonomics
14.8 / 20
Commercial Clarity
13.2 / 20
Operational Transparency
5.1 / 13
Governance
0.0 / 12
Discoverability
8.8 / 10
Regulatory · Government & Public Sector
10.1 / 15
Agent readiness — 76/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
5
Tripadvisor Developing agent ready OTAs & Metasearch
Tripadvisor is the world's largest travel guidance platform, helping hundreds of millions of travelers each month find places to stay, things to do, and rest...
Composite
55.8
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 55.8/100 · developing
Contract Quality
16.7 / 25
Developer Ergonomics
6.1 / 20
Commercial Clarity
7.9 / 20
Operational Transparency
4.8 / 13
Governance
10.4 / 12
Discoverability
10.0 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
6
Oracle Hospitality Developing agent ready Hospitality Technology
Oracle Hospitality is Oracle Corporation's hotel and food-and-beverage technology line, built on the 2014 acquisition of MICROS Systems and anchored by OPERA...
Composite
54.8
Agent
48.2
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 54.8/100 · developing
Contract Quality
13.9 / 25
Developer Ergonomics
13.9 / 20
Commercial Clarity
12.1 / 20
Operational Transparency
6.8 / 13
Governance
0.0 / 12
Discoverability
8.0 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
7
Viator Developing agent native OTAs & Metasearch
Viator is a Tripadvisor company and the largest online marketplace for tours, activities and travel experiences, headquartered in the United States and listi...
Composite
52.6
Agent
80.4
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 52.6/100 · developing
Contract Quality
15.1 / 25
Developer Ergonomics
15.7 / 20
Commercial Clarity
8.9 / 20
Operational Transparency
4.1 / 13
Governance
0.0 / 12
Discoverability
8.8 / 10
Agent readiness — 80/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
9 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
8
U.S. Department of Transportation Developing agent native Regulators
The U.S. Department of Transportation (DOT) is the federal transportation regulator for the United States, the deepest travel market in the world. In aviatio...
Composite
50.3
Agent
65.2
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 50.3/100 · developing
Contract Quality
12.6 / 25
Developer Ergonomics
11.7 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
6.2 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Regulatory · Government & Public Sector
10.1 / 15
Agent readiness — 65/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
7 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
9
United Airlines Developing agent ready Airlines
United Airlines is a major American airline headquartered in Chicago, Illinois. It operates one of the largest route networks in the world with hubs in Chica...
Composite
49.7
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 49.7/100 · developing
Contract Quality
16.8 / 25
Developer Ergonomics
3.9 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
2.7 / 13
Governance
10.4 / 12
Discoverability
10.0 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
10
American Express Global Business Travel Developing agent native Corporate Travel
American Express Global Business Travel (Amex GBT, NYSE GBTG, headquartered in New York) is the largest business-to-business travel platform in the world, op...
Composite
48.7
Agent
58.9
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 48.7/100 · developing
Contract Quality
15.1 / 25
Developer Ergonomics
13.9 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
5.5 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Agent readiness — 59/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
6 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
11
Cloudbeds Developing agent ready Hospitality Technology
Cloudbeds is a San Diego-based hospitality management platform for small and mid-size independent hotels, hostels, and groups, offering PMS, channel manager,...
Composite
47.8
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 47.8/100 · developing
Contract Quality
15.7 / 25
Developer Ergonomics
2.6 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
3.4 / 13
Governance
10.4 / 12
Discoverability
8.0 / 10
Regulatory · Payments
8.8 / 15
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
12
Booking Holdings Developing agent ready OTAs & Metasearch
Booking Holdings is the world's leading provider of online travel and related services, operating a portfolio of brands including Booking.com, Priceline, Ago...
Composite
46.2
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 46.2/100 · developing
Contract Quality
15.8 / 25
Developer Ergonomics
2.6 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
4.8 / 13
Governance
7.3 / 12
Discoverability
10.0 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Thin 5 30–44.9 Limited machine-readable signal beyond documentation a human can read.
13
American Airlines Thin agent aware Airlines
American Airlines is one of the world's largest airlines, operating an extensive domestic and international route network. The company's Runway developer exp...
Composite
44.5
Agent
35.7
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 44.5/100 · thin
Contract Quality
15.1 / 25
Developer Ergonomics
2.2 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
3.4 / 13
Governance
8.8 / 12
Discoverability
9.3 / 10
Agent readiness — 36/100 · agent aware
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
14
Navan Thin agent ready Corporate Travel
Navan (formerly TripActions, rebranded to Navan in February 2022) is a corporate travel, expense, and corporate card management platform. Its public develope...
Composite
43.1
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 43.1/100 · thin
Contract Quality
14.5 / 25
Developer Ergonomics
4.3 / 20
Commercial Clarity
9.5 / 20
Operational Transparency
4.8 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
15
Southwest Airlines Thin human only Airlines
Southwest Airlines is one of the world's most profitable airlines and the largest domestic air carrier in the United States by number of passengers. The comp...
Composite
37.0
Agent
6.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 37.0/100 · thin
Contract Quality
9.9 / 25
Developer Ergonomics
0.0 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
3.4 / 13
Governance
10.4 / 12
Discoverability
7.5 / 10
Agent readiness — 6/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
16
Hilton Thin agent ready Hotel Groups
Hilton is one of the largest and fastest-growing hospitality companies in the world, with a portfolio of hotel brands across luxury, full-service, focused-se...
Composite
36.7
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 36.7/100 · thin
Contract Quality
15.1 / 25
Developer Ergonomics
3.9 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
2.7 / 13
Governance
0.0 / 12
Discoverability
9.3 / 10
Agent readiness — 45/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
17
Marriott International Thin agent native Hotel Groups
Marriott International is the world's largest hotel group by room count, headquartered in Bethesda, Maryland, United States, operating and franchising roughl...
Composite
32.9
Agent
56.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 32.9/100 · thin
Contract Quality
9.4 / 25
Developer Ergonomics
6.5 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
1.4 / 13
Governance
0.0 / 12
Discoverability
8.8 / 10
Agent readiness — 56/100 · agent native
Machine-Readable Contract
18 / 18
Agentic Access Contract
15 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
3 / 3
A2A Agent Card
0 / 8
Emerging 8 15–29.9 More than an index entry but still mostly links rather than artifacts.
18
Amtrak Emerging human only Rail & Ground
Amtrak (the National Railroad Passenger Corporation) is the federally chartered operator of the United States national intercity passenger rail network, head...
Composite
25.5
Agent
13.4
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 25.5/100 · emerging
Contract Quality
2.8 / 25
Developer Ergonomics
3.5 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
9.3 / 10
Regulatory · Government & Public Sector
8.1 / 15
Agent readiness — 13/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
5 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
19
Wyndham Hotels & Resorts Emerging agent aware Hotel Groups
Wyndham Hotels & Resorts, Inc. (NYSE: WH) is the world's largest hotel franchising company by number of properties, with over 8,300 affiliated hotels and app...
Composite
24.9
Agent
30.4
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 24.9/100 · emerging
Contract Quality
4.7 / 25
Developer Ergonomics
5.2 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Agent readiness — 30/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
12 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
20
Alaska Airlines Emerging agent aware Airlines
A major American airline headquartered in SeaTac, Washington, operating an extensive domestic network with service across the U.S., Mexico, Canada, and Centr...
Composite
21.5
Agent
15.2
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 21.5/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
2.6 / 20
Commercial Clarity
10.0 / 20
Operational Transparency
3.4 / 13
Governance
0.0 / 12
Discoverability
5.5 / 10
Agent readiness — 15/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
21
Enterprise Mobility Emerging agent aware Car Rental
Enterprise Mobility is the Clayton, Missouri parent of Enterprise Rent-A-Car, National Car Rental and Alamo Rent a Car, and the largest car rental provider i...
Composite
19.9
Agent
19.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 19.9/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
7.0 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
8.8 / 10
Agent readiness — 20/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
8 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
22
Delta Air Lines Emerging human only Airlines
Delta Air Lines is a major U.S. airline providing scheduled air transportation for passengers and cargo throughout the United States and across the world. De...
Composite
18.7
Agent
6.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 18.7/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
2.2 / 20
Commercial Clarity
5.8 / 20
Operational Transparency
2.7 / 13
Governance
0.0 / 12
Discoverability
8.0 / 10
Agent readiness — 6/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
7 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
23
Kayak Emerging human only OTAs & Metasearch
KAYAK is a free travel metasearch engine that searches hundreds of travel sites at once so travelers can compare and find the lowest available prices on flig...
Composite
17.3
Agent
6.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 17.3/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
1.3 / 20
Commercial Clarity
7.9 / 20
Operational Transparency
1.4 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 6/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
3 / 3
A2A Agent Card
0 / 8
24
JetBlue Emerging human only Airlines
JetBlue Airways (IATA code B6) is a New York-headquartered low-cost United States carrier flying across the U.S., Caribbean, Latin America and Europe, with h...
Composite
17.1
Agent
12.5
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 17.1/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
4.8 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
1.4 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 13/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
25
Choice Hotels Emerging human only Hotel Groups
Choice Hotels International (NYSE: CHH) is a United States hotel franchisor headquartered in North Bethesda, Maryland, operating 7,575 hotels with 656,825 ro...
Composite
16.3
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 16.3/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
1.3 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
1.4 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
Minimal 5 0–14.9 Index entry only; little beyond a description and a link.
26
HEDNA Minimal human only Industry Bodies & Standards
HEDNA (Hotel Electronic Distribution Network Association) is a not-for-profit trade association founded in 1991 and headquartered in Forest Hill, Maryland, U...
Composite
14.0
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 14.0/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.4 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
27
Expedia Minimal human only OTAs & Metasearch
Expedia is one of the world's leading travel platforms, helping travelers plan and book trips through a portfolio of brands including Expedia, Hotels.com, Vr...
Composite
8.5
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 8.5/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
1.7 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
28
Avis Budget Minimal human only Car Rental
Avis Budget Group is a leading global provider of vehicle rental and mobility solutions with brands including Avis, Budget, Budget Truck, Payless, and Zipcar.
Composite
7.9
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 7.9/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
1.7 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
5.5 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
29
Hyatt Minimal human only Hotel Groups
A global hospitality company managing and franchising luxury and upscale hotels, resorts, and vacation properties. Operates brands including Park Hyatt, Gran...
Composite
6.2
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 6.2/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.0 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
5.5 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
30
Hertz Minimal human only Car Rental
In airports around the world and rental car locations near you, get a great selection and price on rental cars, vans and trucks. Reserve your vehicle today.
Composite
3.5
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 3.5/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.0 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
3.5 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
0 / 12
Machine-Readable Auth
0 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
0 / 7
Rate-Limit Signaling
0 / 7
Typed Event Surface
0 / 6
Agent Skills
0 / 5
Well-Known Catalog
0 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8