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Spendesk Integration Guide

Connect Spendesk spend-management data with enterprise finance, procurement, HR, collaboration, and analytics systems through REST APIs, scheduled workflows, and selected webhook capabilities.

Spendesk integration options at a glance

Spendesk integrations primarily use REST APIs to retrieve and, where permitted, update Users, Cards, Transactions, Expenses, Invoices, Purchase requests, Budgets, and Suppliers. API credentials or tenant-issued API keys appear to be the main server-to-server authentication pattern, subject to confirmation in the applicable Spendesk documentation. Webhook or callback support may exist for selected plans, objects, or events, but should not be assumed universally. Martini can consume Spendesk REST endpoints, paginate and checkpoint scheduled synchronizations, transform financial data, and expose a controlled REST API for internal applications. File or attachment handling should be implemented only where the applicable Spendesk API documents the required operation.

Integration pointSupported by Spendesk?Common use casesHow Martini supports it
REST APIsYesRetrieve Users, Cards, Transactions, Expenses, Invoices, Purchase requests, Budgets, and Suppliers, and submit updates where the applicable endpoint permits them.Martini can consume Spendesk REST endpoints, generate reusable API integration assets from external API definitions where available, paginate responses, transform payloads, and expose normalized REST APIs.
Webhooks / outbound callbacksLimitedReceive notifications for selected Spendesk events if the customer’s plan, tenant, and API documentation provide callback support.Martini can receive supported Spendesk notifications through a webhook-triggered workflow, retrieve the current object, and apply idempotency and validation. Coverage must be verified per event.
File / attachment APIsLimitedProcess receipt or invoice documents when Spendesk exposes the required download, upload, metadata, or temporary-URL operation for the relevant object.Martini can route documented file operations through workflows and associate documents with mapped Expenses or Invoices. It should not assume that every document is accessible through the public API.
AuthenticationLimitedAuthenticate server-to-server API requests using the API key or tenant-issued API credential method specified by Spendesk.Martini can store credentials in Secrets Management, inject them into request configuration, and handle authentication and permission failures without embedding secrets in workflows or logs.
Scheduled synchronizationYesPoll Spendesk collections when webhook coverage is unavailable or incomplete, using pagination, incremental filters where documented, bounded windows, and checkpoints.Martini can start workflows on a schedule, maintain synchronization state, control request concurrency, and retry transient failures.
Bulk / asynchronous / batch APIsNot confirmedNo generally documented public bulk or asynchronous API was confirmed; large transfers may require paginated REST retrieval and controlled batching.Martini can implement bounded workflow batches and checkpoint progress without claiming a Spendesk bulk API.
Database accessNoDirect access to Spendesk-managed production data is not an expected integration method.Martini should use Spendesk APIs or supported exports and should not attempt JDBC access to Spendesk’s internal database.

How Spendesk exposes data and business events

Spendesk REST APIs

Spendesk’s primary integration surface is expected to be its HTTP REST API. The API can provide access to business objects such as Users, Cards, Transactions, Expenses, Invoices, Purchase requests, Budgets, and Suppliers, subject to API version, endpoint availability, and tenant permissions.

Martini implementation pattern

Martini implementation pattern: a workflow authenticates with a securely stored Spendesk API credential, calls the required endpoint, follows the documented pagination method, validates the response, maps the object to a canonical model, and writes it to the target system or exposes it through a Martini API.

Implementation sequence

Load the Spendesk API credential from Secrets Management
Request the documented Spendesk collection or resource
Follow pagination and record synchronization progress
Validate approval, amount, currency, and required identifier fields
Map the Spendesk object to the canonical and target models
Write the result and persist the destination identifier

Spendesk Webhooks and callbacks

General-purpose webhook coverage was not confirmed for all Spendesk objects and lifecycle events. If the applicable tenant or plan provides callbacks for selected events, those notifications can reduce polling latency; otherwise scheduled retrieval should be used.

Martini implementation pattern

Martini implementation pattern: expose a protected webhook endpoint, accept only supported Spendesk notifications, validate the request according to the documented mechanism, retrieve the current Spendesk resource rather than trusting a sparse event payload, and apply idempotent downstream processing.

Implementation sequence

Receive a notification for a documented Spendesk event
Validate the notification and identify the affected resource
Check the event or resource identifier against integration state
Retrieve the current Spendesk object through the REST API
Apply status and business-rule validation
Map and deliver the change to the target system

Spendesk scheduled synchronization

Scheduled polling is the fallback and often the practical approach when webhook coverage is unavailable or incomplete. Large collections may require pagination, bounded date windows, checkpointing, and controlled batching within Spendesk API limits.

Martini implementation pattern

Martini implementation pattern: a scheduler starts a workflow, the workflow determines the next synchronization window or checkpoint, retrieves pages from Spendesk, transforms eligible objects, writes them to the destination, and commits progress only after successful handling.

Implementation sequence

Start the synchronization workflow on an approved schedule
Load the last successful checkpoint or bounded time window
Retrieve Spendesk pages with controlled request concurrency
Filter objects by documented change or approval criteria
Write successful results and record object-level outcomes
Commit the checkpoint and route failed items for retry or review

Spendesk file and attachment operations

Spendesk handles receipts and invoice documents, but a generally documented public attachment API was not confirmed. File transfers should therefore be designed only after verifying the required operation for the relevant object and tenant.

Martini implementation pattern

Martini implementation pattern: when a documented Spendesk file endpoint is available, a workflow retrieves file metadata or content, validates the association with an Expense or Invoice, transfers it to the target system, and records the document outcome without logging its contents.

Implementation sequence

Confirm the documented Spendesk attachment operation
Retrieve the file metadata or permitted document content
Validate the related Expense or Invoice identifier
Transfer the document using the target system’s file operation
Record the document result and avoid sensitive payload logging

Common Spendesk integration patterns

Pattern 1: Synchronize approved spend to accounting

When to use this pattern

Use this pattern when approved Spendesk Invoices, Expenses, and Transactions must be posted to an accounting or ERP platform. The workflow should distinguish approved data from items still awaiting review and retain enough state for finance reconciliation.

Integration direction
Spendesk
Martini
NetSuite
Example Mapping
Spendesk FieldCanonical FieldTarget Field
suppliersupplierReferencevendor
amountgrossAmounttransactionAmount
currencycurrencyCodecurrency
approval statusapprovalStateapprovalStatus
Martini implementation pattern

A scheduled Martini workflow retrieves eligible Spendesk objects, follows pagination, applies approval and completeness rules, maps accounting dimensions and financial values, checks destination external IDs, and posts new or changed records. Transient failures are retried, while invalid accounting data is routed to review and the checkpoint advances only for successfully handled records.

Martini capabilities used
  • workflows
  • API consumption
  • scheduling
  • data mapping
  • business rules
  • validation
  • error handling
  • retry and checkpointing

Pattern 2: Reconcile corporate card transactions

When to use this pattern

Use this pattern when finance teams need Spendesk Cards and Transactions enriched with employee, department, project, receipt, or accounting information before loading a finance store or reporting platform.

Integration direction
Spendesk
Martini
Finance data store
Example Mapping
Spendesk FieldCanonical FieldTarget Field
card IDcardIdentifiercard_id
transaction amountamountamount
transaction datetransactionDatetransaction_date
user IDemployeeIdentifieremployee_id
Martini implementation pattern

Martini retrieves Spendesk Cards, Transactions, and related Expenses in controlled pages, joins them using stable identifiers, preserves exact decimal and currency values, and applies enrichment and reconciliation rules. Duplicate detection uses Spendesk IDs and destination keys; records with missing associations are held for operational review rather than silently dropped.

Martini capabilities used
  • scheduled workflows
  • REST API consumption
  • data mapping
  • data transformation
  • business rules
  • idempotency
  • error handling

Pattern 3: Route purchase approval updates

When to use this pattern

Use this pattern when procurement, managers, or collaboration tools need visibility into Spendesk Purchase requests, approval states, Budgets, and Suppliers without giving every internal application direct access to Spendesk.

Integration direction
Spendesk
Martini
Slack
Example Mapping
Spendesk FieldCanonical FieldTarget Field
purchase request statusapprovalStatemessageStatus
requesterrequesterIdentifiermessageAuthor
suppliersupplierNamemessageContext
requested amountrequestedAmountmessageAmount
Martini implementation pattern

Martini receives a supported event or polls for changed Purchase requests, retrieves the current resource, evaluates status and notification rules, and sends a minimized notification to Slack. The workflow suppresses duplicate messages, handles unknown status values explicitly, and records delivery failures for retry.

Martini capabilities used
  • webhook-triggered workflows
  • scheduled workflows
  • API consumption
  • business rules
  • data mapping
  • error handling
  • idempotency

Pattern 4: Load Spendesk data into a warehouse

When to use this pattern

Use this pattern when analysts need governed historical data for Users, Cards, Transactions, Expenses, and Invoices. It is suitable when Spendesk does not provide a broadly documented bulk or asynchronous API.

Integration direction
Spendesk
Martini
PostgreSQL
Example Mapping
Spendesk FieldCanonical FieldTarget Field
Spendesk object IDsourceObjectIdsource_object_id
updated timestampsourceUpdatedAtsource_updated_at
object typesourceObjectTypesource_object_type
approval statusapprovalStateapproval_state
Martini implementation pattern

A scheduled Martini workflow uses a documented incremental filter where available, or bounded date windows with ID-based deduplication otherwise. It transforms each object into warehouse tables, validates required fields, writes through controlled batches, and records counts, totals, and rejected rows for reconciliation.

Martini capabilities used
  • scheduling
  • API consumption
  • pagination
  • data mapping
  • transformation
  • SQL database integration
  • validation
  • monitoring

Applications commonly integrated with Spendesk

Spendesk data can be exchanged with finance, accounting, procurement, HR, collaboration, and analytics applications. Martini can orchestrate these flows through Spendesk REST APIs, scheduled or event-triggered workflows, field mapping, validation, and controlled error handling. Exact object coverage and synchronization direction should be confirmed for the customer’s Spendesk plan and target application.

Application Scenario Direction Martini Pattern
NetSuite Export approved Spendesk Transactions, Invoices, Expenses, Suppliers, and accounting classifications into the ERP for posting and reconciliation. Spendesk → Martini → NetSuite A scheduled Martini workflow retrieves approved and changed Spendesk objects, maps supplier, tax, currency, account, cost-center, and external-ID fields, validates accounting requirements, and creates or updates NetSuite records with checkpointing and duplicate detection.
Xero Synchronize approved expenses, invoices, supplier information, and accounting dimensions with the accounting ledger. Spendesk → Martini → Xero Martini polls Spendesk incrementally, normalizes financial amounts and approval states, applies accounting rules, and sends eligible data to Xero while routing validation failures for finance review.
QuickBooks Online Support ledger synchronization and reconciliation for Spendesk Transactions, Expenses, Invoices, and Suppliers. Spendesk → Martini → QuickBooks Online A Martini workflow maps Spendesk identifiers to QuickBooks Online external references, preserves currency and tax precision, checks existing destination records, and retries only transient API failures.
Sage Intacct Transfer approved spend, supplier invoices, dimensions, and accounting information into finance operations. Spendesk → Martini → Sage Intacct Martini retrieves eligible Spendesk Invoices and Expenses, validates required dimensions and approval status, transforms them into the target accounting model, and records export outcomes for reconciliation.
Microsoft Dynamics 365 Finance Connect corporate spending and invoice information with enterprise finance, procurement, and reporting processes. Spendesk → Martini → Microsoft Dynamics 365 Finance Martini orchestrates Spendesk extraction and Dynamics 365 writes, enriches transactions with organizational or accounting reference data where available, and separates rejected records from successfully posted data.
Pennylane Synchronize Spendesk Expenses, Invoices, and related accounting information with a finance platform. Spendesk → Martini → Pennylane A scheduled workflow retrieves approved Spendesk data, maps supplier and accounting fields to Pennylane’s model, validates totals and currencies, and maintains stable identifiers for repeatable exports.
Slack Notify finance teams or managers about selected Purchase requests, approval states, exceptions, and synchronization failures. Spendesk → Martini → Slack Martini evaluates Spendesk status changes or scheduled results, applies notification rules, and posts concise messages to Slack without exposing unnecessary financial or payment details.
Workday Align Spendesk Users, departments, and organizational reference data with HR master information. Workday → Martini → Spendesk Martini retrieves approved Workday reference data, maps employees and organizational attributes to Spendesk Users or configuration fields where supported, validates identity matching, and reports unresolved mappings.

How to build a Spendesk integration in Martini

Objective

Establish the Spendesk API connection using the credential format and request headers documented for the applicable tenant and API version.

Instructions in Martini

  • Store the Spendesk API credential in Martini Secrets Management.
  • Configure the Spendesk base URL, organization context, and credential properties as environment configuration.
  • Test permissions with a low-risk API request and handle authentication failures explicitly.

Objective

Select an event-driven or scheduled entry point based on the Spendesk objects and events available to the customer’s plan.

Instructions in Martini

  • Use a webhook-triggered workflow only for documented Spendesk callbacks.
  • Use a scheduler when event coverage is unavailable or incomplete.
  • Define the synchronization window, object scope, and concurrency limits.

Objective

Read Spendesk resources reliably while accounting for pagination, incremental filters, approval states, and API limits.

Instructions in Martini

  • Retrieve the required Spendesk collections through REST API requests.
  • Follow the documented cursor, offset, or page-token mechanism.
  • Persist checkpoints or bounded windows and avoid unbounded parallel requests.

Objective

Coordinate retrieval, enrichment, validation, transformation, target writes, and state management as a maintainable Martini workflow.

Instructions in Martini

  • Separate resource retrieval from mapping and target delivery steps.
  • Apply explicit branches for approved, pending, rejected, and invalid financial objects.
  • Persist object-level results so failed records can be retried without replaying successful records.

Objective

Convert Spendesk objects into a canonical model and the target application’s data contract without losing financial precision.

Instructions in Martini

  • Map stable Spendesk identifiers to destination external IDs.
  • Preserve currency codes, decimal precision, tax values, exchange rates, and original amounts.
  • Normalize dates, supplier references, employee identifiers, and approval states.

Objective

Enforce business and finance rules before records are exported or notifications are sent.

Instructions in Martini

  • Require appropriate approval or processing status before accounting export.
  • Validate required suppliers, accounts, dimensions, currencies, and amounts.
  • Route unknown statuses, missing associations, and rejected business rules for review.

Common Spendesk data objects used in integrations

ObjectTypical UseCommon target systemsMartini handling
UsersRepresent employees or other Spendesk users who make purchases, submit requests, or receive Cards.Workday, NetSuite, finance data stores, identity-related internal systemsMartini retrieves Users through documented REST endpoints, maps identity and organizational fields, validates matching keys, and tracks changes where incremental retrieval is supported.
CardsRepresent physical or virtual corporate cards issued to users or used for controlled spending.Finance platforms, reporting stores, internal spend controlsMartini synchronizes card identifiers and permitted metadata, applies data-minimization rules, and avoids logging sensitive payment details.
TransactionsCapture card or payment activity for enrichment, categorization, reconciliation, and accounting export.NetSuite, Xero, QuickBooks Online, Sage Intacct, data warehousesMartini paginates and checkpoints retrieval, preserves currency and decimal precision, enriches transactions with organizational data, and uses stable IDs to prevent duplicate exports.
ExpensesCapture employee-submitted spending information and supporting data for review and accounting.Accounting platforms, finance data stores, reporting applicationsMartini checks approval and processing status, maps tax and accounting fields, and transfers supporting documents only when the required Spendesk attachment operation is documented.
InvoicesRepresent supplier invoices submitted for approval, processing, and accounting export.NetSuite, Xero, QuickBooks Online, Sage Intacct, PennylaneMartini exports only eligible approval states, validates supplier, amount, currency, and accounting dimensions, and records destination identifiers for reconciliation.
Purchase requestsRepresent planned spend moving through an approval process.Procurement applications, Slack, ERP platforms, internal approval APIsMartini retrieves request and approval states, applies routing or notification rules, and exposes normalized status data through a controlled REST API when needed.

Authentication and security considerations

API credentials and tenant configuration

Spendesk API access appears to use an API key or tenant-issued API credential rather than a generally confirmed OAuth 2.0 flow. Exact headers, credential format, permissions, and API version requirements should be verified with Spendesk.

Secret protection

Store Spendesk credentials in Martini Secrets Management and reference them from workflow configuration. Do not embed credentials in mappings, source code, payloads, or logs.

Data access

Restrict workflows and exposed Martini APIs to the minimum required access. Spendesk data may include employee, supplier, payment, invoice, and financial information, so logs and downstream payloads should be minimized.

Operational considerations for Spendesk integrations

Rate limits and pagination

Confirm Spendesk request limits, throttling responses, and pagination behavior. Use controlled concurrency, backoff, and persisted progress for large collections.

Financial integrity

Preserve currency codes, decimal precision, tax amounts, exchange rates, original amounts, and stable Spendesk identifiers. Do not export Invoices, Expenses, or Purchase requests solely because they exist; check approval and processing states.

Idempotency and reconciliation

Use source IDs, destination external IDs, checkpoints, and documented idempotency keys where available. Reconcile counts, totals, dates, currencies, suppliers, and destination identifiers for each synchronization window.

Schema and document changes

Validate required fields and status enumerations, tolerate safe additive fields, and alert on breaking changes. Confirm attachment operations before designing receipt or invoice-document transfers.

Retries and testing

Retry transient failures with backoff, but route authentication errors, invalid data, duplicate conflicts, and business-rule rejections for review. Test representative approval states, pagination, partial failures, duplicate delivery, and changed schemas before production deployment.

Why use Martini instead of scripts or point-to-point integrations?

Centralized orchestration

Martini provides a maintainable workflow layer for Spendesk retrieval, enrichment, validation, target delivery, checkpointing, and error handling instead of duplicating logic across point-to-point scripts.

Reusable integration assets

Teams can consume Spendesk REST APIs, expose controlled REST endpoints, reuse mappings and business rules, and adapt target-system contracts without changing every consuming application.

Operational control

Scheduled and event-triggered workflows can apply consistent retry, idempotency, reconciliation, logging, and secret-management practices to financially sensitive integrations.

Flexible enterprise connectivity

Martini can combine Spendesk API calls with other APIs, databases, files, and messaging systems when an integration requires enrichment, warehousing, notifications, or multi-step orchestration.

Frequently asked questions

How can Spendesk be integrated with enterprise systems?

Spendesk is primarily integrated through its REST API using tenant-issued API credentials or API keys, subject to the applicable documentation and permissions. Enterprise workflows can retrieve Users, Cards, Transactions, Expenses, Invoices, Purchase requests, Budgets, and Suppliers, then synchronize approved data to finance, procurement, HR, collaboration, or analytics systems. Selected webhook or callback support may be available, but coverage should be verified per event; scheduled incremental polling is the fallback.

Can Martini integrate with Spendesk?

Yes. Martini can integrate with Spendesk by consuming its REST APIs, securely supplying the applicable API credential, paginating and checkpointing retrievals, mapping financial objects, and orchestrating writes to downstream systems. Martini can also receive supported webhook notifications and expose a controlled REST API for internal consumers. A native Martini Spendesk connector is not documented in the supplied materials.

Do I need a connector to integrate Spendesk with Martini?

No. A dedicated Spendesk connector is not required. Martini can use Spendesk’s confirmed native integration mechanisms, primarily REST APIs and API credentials, with scheduled workflows and selected webhooks or callbacks where the tenant supports them.

Is there any extra Lonti cost to integrate Spendesk with Martini?

Lonti does not charge an additional per-connector or per-vendor fee to integrate Spendesk. Integrations are subject to the provisioned capacity of the Martini environment. Separate costs may apply from Spendesk, infrastructure providers, or other third-party systems depending on subscriptions, usage, and deployment model.

Which Spendesk integration methods should enterprises use?

REST APIs are the primary and currently recommended integration method described in the research. Scheduled synchronization is appropriate when webhook coverage is unavailable or incomplete. Webhook or outbound callback support should be treated as limited and event-specific, while public GraphQL, SOAP, bulk, and asynchronous APIs were not confirmed.

Can Martini receive Spendesk webhooks or callbacks?

Potentially, but only for events supported by the applicable Spendesk plan, tenant, and API documentation. Coverage should be verified for each object and lifecycle event. If a required callback is unavailable, Martini can use scheduled polling and incremental retrieval where Spendesk supports it.

How does synchronization prevent duplicate or incorrect financial data?

Martini can use stable Spendesk object identifiers, destination external IDs, persisted checkpoints, bounded windows, and idempotency keys where the relevant API documents them. Workflows can check approval states, preserve currency and decimal precision, validate required fields, and separate transient failures from permanent validation or business-rule errors.

Can Martini expose a controlled API for Spendesk data?

Yes. Martini can expose a REST API that retrieves or normalizes Spendesk data, applies authorization and business rules, and presents a controlled internal contract. This allows internal applications to consume approved Spendesk information without each application implementing its own direct Spendesk integration.

Related Martini documentation

APIs

Workflows

Data

Security

Operations

Connect Spendesk with your enterprise systems

Use Martini to build a secure, maintainable Spendesk integration around REST APIs, scheduled synchronization, selected callbacks, data mapping, and operational controls.

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