Platform Capability

Transfers Capability Built For Failure Paths

Create transfer flows that remain inspectable through retries, provider callbacks, reversals, settlement delays, and support escalation.

Docs

01Idempotent writes
02Settlement states
03Support-ready evidence

Fig 01operating model

A transfer stays legible while banks, providers, and callbacks behave out of order.

Entrypoint

POST /transfers

01Request

Create transfer

Client intent enters with destination, amount, currency, and idempotency key.

02Control

Validate tenant policy

Limits, authorization, and corridor constraints resolve before money moves.

03Ledger

Reserve and post

Ledger-safe mutation boundaries protect balances through retries.

04Event

Deliver transfer status

Callbacks and webhooks carry attempt history and signature posture.

05Review

Reconcile outcome

Provider result, settlement status, and support evidence stay attached.

Events emitted

transfer.createdtransfer.postedtransfer.failedtransfer.settled

Evidence retained

transfer_ididempotency_keytenantprovider_referencecallback_attempts

Fig 02failure paths

Transfer uncertainty becomes explicit state.

Retries, late callbacks, reversals, and settlement delays are treated as normal operating paths, not support mysteries.

Duplicate callback

Incident

A provider sends the same success callback twice after a timeout.

Zentra path

Signature, idempotency, and transfer state resolve to one ledger-safe mutation.

Evidence

Callback attempts, provider reference, transfer state, and ledger entry are retained.

Late failure

Incident

A transfer appears posted before the provider later sends a failure signal.

Zentra path

The transfer moves through review and reversal state without losing the original route.

Evidence

Original request, route, policy decision, reversal entry, and operator notes stay attached.

Fig 03api to product state

The integration creates visible state.

One call to POST /transfers produces status, emitted events, and retained evidence a team can inspect without leaving the product surface.

create transferrequest

await zentra.transfers.create({
  amount_minor: 125000,
  currency: "ledger_currency",
  destination: "destination_account",
  idempotency_key: "transfer_key_042"
})

product consequence

status: processing
event: transfer.created
evidence: transfer_id
entrypoint: POST /transfers

Fig 04capability model

Idempotent initiation

Protect transfer creation from duplicate effects when clients, services, or rails retry.

Corridor-aware routing

Keep rail selection, fallback decisions, and regional constraints visible to operators.

Settlement state clarity

Represent pending, posted, failed, reversed, and settled outcomes through explicit states.

Support-ready evidence

Attach actor, tenant, route, policy, and callback context to each transfer storyline.

Visual center

Control plane

Tenant-aware orchestration with explicit states, traces, and policy boundaries.

Fig 05operational proof

Evidence that holds when production gets noisy.

State, actor, tenant, signature, and policy context remain reviewable after the happy path breaks — written to be checked by operators and compliance teams, not admired in a deck.

Docs

Transfer state remains legible when provider callbacks arrive late, duplicate, or out of order.

Retry behavior is designed around idempotency keys, signed events, and ledger-safe mutation boundaries.

Support and compliance teams can inspect one evidence trail instead of reconstructing money movement from fragments.