API Evangelist Sector Report
The State of UK Travel APIs
14 UK travel organizations scored (avg 27.1) — the market building the alternative to GDS intermediation, and scoring below the market it is trying to replace. Duffel, the API-first booking layer built on NDC, reaches 38.8; Travelport, the GDS it exists to route around, scores 27.6; British Airways, an early NDC adopter that surcharged GDS bookings, scores 23.7. Skyscanner, the country’s best-known travel brand, scores 7.4.
Read the report →
$500
· PDF + Word, instant download
UK 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.
search
14 providers
Developing 1 45–59.9 Real signal across most facets with visible, nameable gaps.
1
TUI Group Developing agent native OTAs & Metasearch
TUI Group is the world's largest integrated leisure tourism business — a vertically integrated tour operator that owns the hotels, the cruise ships, the airl...
Composite
51.6
Agent
62.5
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 51.6/100 · developing
Contract Quality
13.0 / 25
Developer Ergonomics
13.5 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
8.2 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Agent readiness — 63/100 · 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
7 / 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
Thin 4 30–44.9 Limited machine-readable signal beyond documentation a human can read.
2
UK Civil Aviation Authority Thin agent native Regulators
The UK Civil Aviation Authority (CAA) is the United Kingdom's independent aviation regulator and a public corporation of the Department for Transport. It lic...
Composite
43.4
Agent
56.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 43.4/100 · thin
Contract Quality
15.7 / 25
Developer Ergonomics
6.5 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
3.4 / 13
Governance
1.6 / 12
Discoverability
9.3 / 10
Regulatory · Government & Public Sector
8.8 / 15
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
3
TravelPerk Thin agent ready Corporate Travel
TravelPerk is a business-travel management platform that lets companies book and manage flights, hotels, trains, and cars in one place. Its Open API gives pa...
Composite
41.0
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 41.0/100 · thin
Contract Quality
14.4 / 25
Developer Ergonomics
3.9 / 20
Commercial Clarity
7.9 / 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
4
Virgin Atlantic Thin agent aware Airlines
Virgin Atlantic Airways is a United Kingdom long-haul carrier (IATA code VS) based at London Heathrow and Manchester, operating a transatlantic joint venture...
Composite
39.6
Agent
32.1
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 39.6/100 · thin
Contract Quality
5.7 / 25
Developer Ergonomics
13.0 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
3.8 / 13
Governance
1.6 / 12
Discoverability
8.8 / 10
Agent readiness — 32/100 · 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
7 / 7
Rate-Limit Signaling
0 / 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
5
Duffel Thin agent ready Booking API Aggregators
Duffel provides a single REST API for selling travel - flights from 300+ airlines, 2M+ hotel properties (Stays), loyalty programmes, and merchant-of-record p...
Composite
38.8
Agent
44.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 38.8/100 · thin
Contract Quality
13.1 / 25
Developer Ergonomics
4.3 / 20
Commercial Clarity
7.9 / 20
Operational Transparency
3.4 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Regulatory · Payments
5.9 / 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
Emerging 5 15–29.9 More than an index entry but still mostly links rather than artifacts.
6
Heathrow Airport Emerging human only Airports & Infrastructure
Heathrow Airport Limited operates London Heathrow (IATA LHR, ICAO EGLL), the United Kingdom's principal international hub and Europe's busiest airport by pas...
Composite
28.0
Agent
12.5
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 28.0/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
9.1 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
2.1 / 13
Governance
0.0 / 12
Discoverability
10.0 / 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
7
Travelport Emerging agent aware GDS & Distribution
A global travel technology company connecting travel providers with online and offline travel agencies. Operates a commerce platform facilitating airline, ho...
Composite
27.6
Agent
38.4
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 27.6/100 · emerging
Contract Quality
12.0 / 25
Developer Ergonomics
5.2 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
10.0 / 10
Regulatory · Payments
3.9 / 15
Agent readiness — 38/100 · agent aware
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
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
8
British Airways Emerging agent aware Airlines
British Airways Plc is the United Kingdom's flag carrier, headquartered at Waterside near London Heathrow and owned since 2011 by International Consolidated ...
Composite
23.7
Agent
17.9
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 23.7/100 · emerging
Contract Quality
5.7 / 25
Developer Ergonomics
7.0 / 20
Commercial Clarity
0.0 / 20
Operational Transparency
3.1 / 13
Governance
0.0 / 12
Discoverability
8.0 / 10
Agent readiness — 18/100 · 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
0 / 7
Typed Event Surface
6 / 6
Agent Skills
0 / 5
Well-Known Catalog
4 / 4
Consent & Bot Identity
0 / 3
A2A Agent Card
0 / 8
9
Trainline Emerging human only Rail & Ground
Trainline plc is Europe's leading independent rail and coach ticket retailer and distribution platform, headquartered in London and listed on the London Stoc...
Composite
22.5
Agent
3.6
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 22.5/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
4.8 / 20
Commercial Clarity
7.4 / 20
Operational Transparency
2.1 / 13
Governance
1.6 / 12
Discoverability
6.8 / 10
Agent readiness — 4/100 · 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
0 / 3
A2A Agent Card
0 / 8
10
easyJet Emerging human only Airlines
easyJet Airline Company Limited is a British low-cost short-haul carrier registered in England (company number 03034606, registered office Hangar 89, London ...
Composite
17.0
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 17.0/100 · emerging
Contract Quality
0.0 / 25
Developer Ergonomics
0.9 / 20
Commercial Clarity
6.8 / 20
Operational Transparency
0.0 / 13
Governance
0.0 / 12
Discoverability
9.3 / 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 4 0–14.9 Index entry only; little beyond a description and a link.
11
IHG Hotels & Resorts Minimal human only Hotel Groups
InterContinental Hotels Group PLC (trading as IHG Hotels & Resorts) is a British asset-light hotel group headquartered at Windsor Dials, 1 Arthur Road, Winds...
Composite
14.5
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 14.5/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.9 / 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
12
On the Beach Minimal agent aware OTAs & Metasearch
On the Beach Group plc (LSE: OTB) is a Manchester-headquartered online travel agent and the United Kingdom's largest online short-haul beach package holiday ...
Composite
14.3
Agent
14.3
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 14.3/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
2.6 / 20
Commercial Clarity
4.2 / 20
Operational Transparency
0.7 / 13
Governance
0.0 / 12
Discoverability
6.8 / 10
Agent readiness — 14/100 · agent aware
Machine-Readable Contract
0 / 18
Agentic Access Contract
0 / 15
MCP Server
12 / 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
0 / 3
A2A Agent Card
0 / 8
13
Jet2 Minimal human only Airlines
Jet2 plc (London Stock Exchange: JET2, formerly Dart Group plc) is a British leisure travel group headquartered at Low Fare Finder House, Leeds Bradford Airp...
Composite
9.3
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 9.3/100 · minimal
Contract Quality
0.0 / 25
Developer Ergonomics
0.4 / 20
Commercial Clarity
2.1 / 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
14
Skyscanner Minimal human only OTAs & Metasearch
Skyscanner is an Edinburgh, Scotland–headquartered global travel marketplace that helps travellers compare flights, hotels, and car hire across hundreds of a...
Composite
7.4
Agent
0.0
Kin Score
How this is scored →scored 2026-07-28 · rubric v0.5.1
Composite quality — 7.4/100 · 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
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