Connect the resources your business uses
Documented HTTP APIs can provide customer, invoice, order and service records to Uplyst. Resource identifiers and relationships map those records into the shared business model, connecting application activity with finance, operations and customer context.
The source API determines the available endpoints, fields, operations and update methods. Retaining API versions and field definitions with the mapping makes changes traceable to the information used in a decision.

Efficient reads and controlled updates
Conditional requests using ETags or modification times can reduce unnecessary transfers where the API supports them. Preconditions can also prevent updates from overwriting a resource that changed in the meantime.
HTTP method semantics guide retry behaviour. An application may require additional idempotency support before a write can be repeated safely. Rate limits and Retry-After instructions govern how quickly a client can continue.
| Response or condition | Client responsibility |
|---|---|
| Authentication failure | Renew or correct credentials under a bounded policy |
| Permission denial | Ask the source owner to review permissions; do not retry indefinitely |
| Rate or availability limit | Respect documented Retry-After guidance |
| Uncertain write outcome | Check operation state before repeating a side effect |
Complete records with consistent meaning
Continuation links and cursors allow large collections to be read in manageable batches. Their validity and ordering rules come from the source API. Reconciliation accounts for updates and deletions that occur while a collection is being read.
Identifiers, currencies, units and lifecycle states connect the response to its business meaning. These definitions distinguish an order that is closed from one that is cancelled, or an invoice amount from a balance still due.
Authorised access to selected resources
Each service defines its authentication method, which may use OAuth, signed requests, client certificates or API keys. Integration credentials and permissions are scoped to the required resources and operations. Credential expiry and permission changes need separate handling because they call for different remedies.
Keep application data available through interruptions
Timeouts, rate limits and temporary failures need bounded retries and resumable processing. Persistent access or data problems require attention rather than repeated requests. Source comparisons and reconciliation identify missing or outdated records after a connection resumes.