Duffel

Duffel provides a single REST API for selling travel - flights from 300+ airlines, 2M+ hotel properties (Stays), loyalty programmes, and merchant-of-record payments. The Duffel API exposes offer requests, offers, orders, seat maps, order changes and cancellations, payments, and Stays search-to-booking, with webhooks for asynchronous events.

Duffel publishes 10 API contracts indexed on the APIs.io network, including Ancillaries API, Offer Requests API, Offers API, and 7 more. Tagged areas include Travel, Flights, Hotels, Booking, and Payments.

The Duffel catalog on APIs.io includes 1 Spectral governance ruleset.

Duffel’s developer surface includes authentication, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

28.6/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent Heartbeat 96/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Travel Flights Hotels Booking Payments

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /air/webhooks POST /air/webhooks/{id}/actions/ping

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 28.6/100 · thin

Contract Quality 8.6 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

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

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 31.0 — up to +13.8 composite points
Contract Quality scores 45.7 — up to +13.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/duffel/apis.yml: open an issue on github.com/api-evangelist/duffel to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Travel and Airline Distribution	coverage	52.8	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 10

Individual APIs this provider publishes, each with its own machine-readable definition.

Duffel Ancillaries API

The Ancillaries API from Duffel — 2 operation(s) for ancillaries.

Duffel Offer Requests API

Search for flights by creating offer requests.

Duffel Offers API

Flight offers returned for an offer request.

Duffel Order Cancellations API

Cancel an existing order and preview refunds.

Duffel Order Changes API

Modify an existing order.

Duffel Orders API

Create and manage flight orders (bookings).

Duffel Payments API

Pay for held orders.

Duffel Seat Maps API

Seat maps for an offer.

Duffel Stays API

Accommodation search and booking.

Duffel Webhooks API

Scroll for all 10

Open Collections 11

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Duffel Ancillaries API

OPEN COLLECTION

Duffel Ancillaries Offer Requests API

OPEN COLLECTION

Duffel Ancillaries Offers API

OPEN COLLECTION

Duffel Ancillaries Order Cancellations API

OPEN COLLECTION

Duffel Ancillaries Order Changes API

OPEN COLLECTION

Duffel Ancillaries Orders API

OPEN COLLECTION

Duffel Ancillaries Payments API

OPEN COLLECTION

Duffel Ancillaries Seat Maps API

OPEN COLLECTION

Duffel Ancillaries Stays API

OPEN COLLECTION

Duffel Ancillaries Webhooks API

OPEN COLLECTION

Duffel API

OPEN COLLECTION

Scroll for all 11

Duffel API pricing

Not yet checked against Duffel's own pricing page. Compiled by API Evangelist on 2026-06-25 from duffel.com/pricing; confirm before you rely on a figure.

Plan	Price
Pay as you go usage	—
Stays usage	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Per-Endpoint Request Limit: see provider documentation requests
Search-to-Book Ratio: 90001 searches per order

Compiled by API Evangelist, not yet checked against Duffel's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Duffel Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Duffel Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Duffel

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Duffel Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Duffel API Rules

55 rules · 53 errors 1 warnings 1 info

SPECTRAL

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Duffel Authentication

http · 1 scheme

SECURITY

Duffel Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Duffel Vulnerability Disclosure

no policy recorded

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Duffel Agentic Access

39 operations · 19 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: duffel
url: https://raw.githubusercontent.com/api-evangelist/duffel/refs/heads/main/apis.yml
name: Duffel
kind: company
description: Duffel provides a single REST API for selling travel - flights from 300+ airlines, 2M+ hotel properties (Stays),
  loyalty programmes, and merchant-of-record payments. The Duffel API exposes offer requests, offers, orders, seat maps, order
  changes and cancellations, payments, and Stays search-to-booking, with webhooks for asynchronous events.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/duffel.png
tags:
- Travel
- Flights
- Hotels
- Booking
- Payments
created: '2026-06-25'
modified: '2026-06-25'
specificationVersion: '0.23'
apis:
- aid: duffel:duffel-ancillaries-api
  name: Duffel Ancillaries API
  description: The Ancillaries API from Duffel — 2 operation(s) for ancillaries.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Ancillaries
  properties:
  - type: OpenAPI
    url: openapi/duffel-ancillaries-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-offer-requests-api
  name: Duffel Offer Requests API
  description: Search for flights by creating offer requests.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Offer Requests
  properties:
  - type: OpenAPI
    url: openapi/duffel-offer-requests-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-offers-api
  name: Duffel Offers API
  description: Flight offers returned for an offer request.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Offers
  properties:
  - type: OpenAPI
    url: openapi/duffel-offers-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-order-cancellations-api
  name: Duffel Order Cancellations API
  description: Cancel an existing order and preview refunds.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Order Cancellations
  properties:
  - type: OpenAPI
    url: openapi/duffel-order-cancellations-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-order-changes-api
  name: Duffel Order Changes API
  description: Modify an existing order.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Order Changes
  properties:
  - type: OpenAPI
    url: openapi/duffel-order-changes-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-orders-api
  name: Duffel Orders API
  description: Create and manage flight orders (bookings).
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/duffel-orders-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-payments-api
  name: Duffel Payments API
  description: Pay for held orders.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Payments
  properties:
  - type: OpenAPI
    url: openapi/duffel-payments-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-seat-maps-api
  name: Duffel Seat Maps API
  description: Seat maps for an offer.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Seat Maps
  properties:
  - type: OpenAPI
    url: openapi/duffel-seat-maps-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-stays-api
  name: Duffel Stays API
  description: Accommodation search and booking.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Stays
  properties:
  - type: OpenAPI
    url: openapi/duffel-stays-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
- aid: duffel:duffel-webhooks-api
  name: Duffel Webhooks API
  description: Register endpoints to receive event notifications.
  humanURL: https://duffel.com/docs/api/v2/offer-requests
  baseURL: https://api.duffel.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/duffel-webhooks-api-openapi.yml
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offer-requests
  - type: Documentation
    url: https://duffel.com/docs/api/v2/offers
  - type: APIReference
    url: https://duffel.com/docs/api/v2/offers
  - type: Documentation
    url: https://duffel.com/docs/api/v2/orders
  - type: APIReference
    url: https://duffel.com/docs/api/v2/orders
  - type: Documentation
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: APIReference
    url: https://duffel.com/docs/api/v2/seat-maps
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-changes
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-changes
  - type: Documentation
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: APIReference
    url: https://duffel.com/docs/api/v2/order-cancellations
  - type: Documentation
    url: https://duffel.com/docs/api/v2/payments
  - type: APIReference
    url: https://duffel.com/docs/api/v2/payments
  - type: Documentation
    url: https://duffel.com/docs/api/v2/search
  - type: APIReference
    url: https://duffel.com/docs/api/v2/search
  - type: Documentation
    url: https://duffel.com/docs/api/v2/webhooks
  - type: APIReference
    url: https://duffel.com/docs/api/v2/webhooks
common:
- type: CapabilityMap
  url: capabilities/duffel-capability-edges.yml
  name: Duffel Business Capability Map
- type: AgenticAccess
  url: agentic-access/duffel-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/duffel-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/duffel-domain-security.yml
- type: Authentication
  url: authentication/duffel-authentication.yml
- type: GitHubOrganization
  url: https://github.com/duffelhq
- type: LinkedIn
  url: https://www.linkedin.com/company/duffel
- type: Website
  url: https://duffel.com
- type: Documentation
  url: https://duffel.com/docs
- type: Plans
  url: plans/duffel-plans-pricing.yml
- type: RateLimits
  url: rate-limits/duffel-rate-limits.yml
- type: FinOps
  url: finops/duffel-finops.yml
- url: https://duffel.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Duffel API — frequently asked questions

Does Duffel have an API?

Yes. APIs.io lists 10 APIs from Duffel, including Duffel Ancillaries API, Duffel Offer Requests API and Duffel Offers API, and 7 more.

Is there an OpenAPI specification for the Duffel API?

Yes. APIs.io indexes 10 OpenAPI specifications for Duffel, each linked for download from this page.

How do I authenticate with the Duffel API?

Duffel uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Duffel Authentication.

How much does the Duffel API cost?

APIs.io lists 3 pricing plans for Duffel, with each plan's price, limits and inclusions under Pricing on this page.

Is the Duffel API ready for AI agents?

Duffel has a Kin Score of 28.6 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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