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Travel & Expense

API analysis for T&E platforms like Navan, TravelPerk, and SAP Concur. A well-designed API could pull trips, expenses, and receipts, push policy and approval updates, and sync spend data into your ERP in near real time.

Docs in this category

Navan API

navan

Navan API

Navan (formerly TripActions) is a comprehensive corporate travel and expense management platform serving over 10,000 customers globally. This page is an independent design exercise that asks what a well-designed Navan API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
TravelPerk API

travelperk

TravelPerk API

TravelPerk is a hyper-growth travel management platform serving thousands of companies globally. This page is an independent design exercise that asks what a well-designed TravelPerk API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
American Express Global Business Travel API

american express global business travel

American Express Global Business Travel API

Amex GBT is a leading corporate travel management company (TMC) and technology provider that delivers: This page is an independent design exercise that asks what a well-designed American Express Global Business Travel API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
BILL Spend & Expense API

bill spend & expense

BILL Spend & Expense API

BILL Spend & Expense is a cloud platform for corporate card issuing and expense management. This page is an independent design exercise that asks what a well-designed BILL Spend & Expense API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Spotnana API

spotnana

Spotnana API

Spotnana is a Travel-as-a-Service (TaaS) platform that connects travel buyers, sellers, and providers on a single modern technology infrastructure. This page is an independent design exercise that asks what a well-designed Spotnana API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Fyle API

fyle

Fyle API

Fyle (now Sage Expense Management) is an AI-powered expense management platform that automates business expense tracking, receipt collection, and corporate card reconciliation for small and mid-sized businesses. This page is an independent design exercise that asks what a well-designed Fyle API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
TravelBank API

travelbank

TravelBank API

TravelBank is a cloud platform for corporate travel and expense (T&E) management that centralizes trip booking, policy enforcement, receipt capture, approvals, reimbursements, and spend analytics. This page is an independent design exercise that asks what a well-designed TravelBank API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Spendesk API

spendesk

Spendesk API

Spendesk is a cloud platform that centralizes company spending across corporate cards, invoices, subscriptions, and reimbursements. This page is an independent design exercise that asks what a well-designed Spendesk API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Routespring API

routespring

Routespring API

Routespring is a cloud platform for corporate travel management focused on ease of booking, centralized payment (direct billing), policy enforcement, and streamlined approvals. This page is an independent design exercise that asks what a well-designed Routespring API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Oversight API

oversight

Oversight API

Oversight is an enterprise platform for continuous spend risk monitoring and controls across AP, T&E, and P-Card programs. This page is an independent design exercise that asks what a well-designed Oversight API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Egencia API

egencia

Egencia API

Egencia is a cloud-based corporate travel management solution, part of American Express Global Business Travel, that centralizes booking, policy enforcement, approvals, traveler profiles, supplier content, and analytics for enterprises. This page is an independent design exercise that asks what a well-designed Egencia API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Deem API

deem

Deem API

Deemis an enterprise online booking tool that helps organizations book and manage corporate travel while enforcing policy, approvals, and negotiated rates. This page is an independent design exercise that asks what a well-designed Deem API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Corporate Travel Management API

corporate travel management

Corporate Travel Management API

Corporate Travel Management is a business travel management company and technology platform that centralizes booking, traveler profiles, policy enforcement, approvals, duty-of-care, and financial reconciliation for mid-market and enterprise organizations. This page is an independent design exercise that asks what a well-designed Corporate Travel Management API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Chrome River API

chrome river

Chrome River API

Chrome River is a cloud platform for travel and expense (T&E) and AP invoice automation. This page is an independent design exercise that asks what a well-designed Chrome River API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
BCD Travel API

bcd travel

BCD Travel API

BCD Travel is a global provider of corporate travel management that centralizes booking, policy enforcement, approvals, traveler servicing, analytics, and duty-of-care across multinational enterprises. This page is an independent design exercise that asks what a well-designed BCD Travel API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Airbase API

airbase

Airbase API

Airbase is a cloud platform for corporate spend management that unifies AP automation, corporate cards, reimbursements, approvals, and accounting sync for finance teams. This page is an independent design exercise that asks what a well-designed Airbase API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
SAP Concur API

sap concur

SAP Concur API

SAP Concur is an enterprise platform for travel and expense (T&E) management and AP automation. This page is an independent design exercise that asks what a well-designed SAP Concur API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
Emburse API

emburse

Emburse API

Emburse provides spend management and travel & expense (T&E) solutions used by finance teams across SMB and enterprise. This page is an independent design exercise that asks what a well-designed Emburse API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026
AtoB API

atob

AtoB API

AtoB is a cloud fintech platform for transportation and logistics fleets that centralizes payments, fuel spend, and driver financial workflows. This page is an independent design exercise that asks what a well-designed AtoB API could look like: the resources it would expose, the authentication it would need, and the workflows it could unlock. Below: a hypothetical endpoint design, the technical requirements a production implementation would face, the use cases programmatic access could serve, and where to start if your team needs this kind of access today.

Alex KlarfeldJul 8, 2026