APIs And SDKs Built For Financial Correctness

Build against contracts designed for long-lived integrations, production observability, and replay-safe money movement under real-world failure conditions.

  • 01Versioned contracts
  • 02Typed schemas
  • 03Correlated traces

Operating pillars

4

Capability layers rendered with explicit operational behavior.

Visual center

Developer proof

Code, contract, and event-runtime evidence rendered in one technical view.

Runtime model

Deterministic

Replay-safe money and identity workflows under retry pressure.

Control boundary

Tenant-scoped

Isolation across authorization, data access, and operator actions.

Operating model

Every integration starts from stable contracts, typed errors, idempotency, and request-level observability.

Entrypoint

GET /v1

01Auth

Authenticate request

API keys, scopes, and tenant context are resolved before capability logic.

02Shape

Validate schema

Typed request and error contracts keep integrators out of guesswork.

03Guard

Resolve idempotency

Money-writing calls check replay posture before side effects.

04Trace

Correlate response

Request identifiers connect API behavior to events, logs, and support context.

05Evolve

Version without drift

Contract changes remain compatible with long-lived integrations.

Events emitted

api.request.accepted
api.error.typed
idempotency.replayed
api.trace.exported

Evidence retained

request_id
api_key_scope
schema_version
idempotency_key
error_code

Failure paths stay inspectable.

The capability exposes incident, system path, and evidence posture so teams can reason about production behavior.

01

Proof 01

Incident

Control-plane tooling enforces modern route contracts and rejects legacy path drift.

Zentra path

State transitions, events, and review ownership remain explicit.

Evidence

request_id

02

Proof 02

Incident

Developer surfaces include API keys, logs, routing context, and sandbox workflows.

Zentra path

State transitions, events, and review ownership remain explicit.

Evidence

api_key_scope

From API request to operational evidence.

This page makes the runtime visible: GET /v1, the state path, emitted events, and evidence a team can inspect when the happy path breaks.

API request

live

await zentra.runtime.intents.create({

intent_id: "intent_042",

scope: "workspace_scope",

money_model: "minor_units + ledger_currency",

primitives: ["policy", "ledger", "events"]

})

intent accepted
workspace scope resolved
runtime trace attached

Runtime state machine

01Accept intentruntime contractaccepted
02Resolve controlsscope + policycontrolled
03Post ledger stateminor-unit entriesledgered
04Select routecorridor contextrouted
05Sync eventssigned streamsynchronized
06Seal evidenceactor + scope + timeevidenced

Ledger entries

debitcustomer_balance-125000 mu
creditreserved_balance+125000 mu
debitreserved_balance-125000 mu
creditsettlement_account+125000 mu

Audit evidence

actorsvc_runtime
scopeworkspace_scope
policylimit_check.passed
signatureverified

Operational building blocks, not vague feature claims.

Each pillar below maps product capability to runtime behavior teams can reason about before launch.

01

Versioned API contracts

Protect existing integrations with backward-compatible evolution patterns.

02

Typed integration boundaries

Use typed request and response schemas for predictable integration behavior.

03

Idempotency-first writes

Protect money-affecting operations from replay and duplicate submission side effects.

04

Operational traceability

Correlate requests and outcomes across services to speed up diagnosis and support.

Visual center

Developer proof

Code, contract, and event-runtime evidence rendered in one technical view.

  • Keep versioned api contracts deterministic under retries, delays, and asynchronous callbacks.
  • Expose state transitions and error semantics clearly enough for operators and integrators to act.
  • Capture audit events with tenant and actor attribution for regulated review workflows.

The integration should create visible state.

A buyer should see the first call, the system response, the webhook behavior, and the ledger/audit consequence without leaving the product page.

inspect request

const zentra = new Zentra({
  apiKey: process.env.ZENTRA_SECRET_KEY
})

await zentra.requests.retrieve("req_8172")

System response

status

traceable

event

api.request.accepted

evidence

request_id

entrypoint

GET /v1

The first integration proof should show GET /v1, emitted events, retained evidence, and visible product state.

Webhook replay

01timeoutevent api.request.acceptedretained
02signature verifiedevent api.request.acceptedretrying
03deliveredevent api.request.acceptedresolved

Result: one ledger-safe state transition

Delivery state remains visible without creating duplicate financial state.

Ledger flow

account

Customer

-125000 mu

account

Reserved

+125000 mu

account

Settlement

+125000 mu

account

Merchant

+125000 mu

account

Payout

closed

Evidence that the capability behaves correctly when production gets noisy.

The proof points below are written to be checked by operators, solution engineers, and compliance teams, not just admired in a brand presentation.

Control-plane tooling enforces modern route contracts and rejects legacy path drift.

Developer surfaces include API keys, logs, routing context, and sandbox workflows.

Integration behavior remains deterministic from first sandbox test to production rollout.

Audit evidence travels with the capability.

Every primitive page needs proof that state, actor, tenant, signature, and policy context remain reviewable after the happy path breaks.

Trust evidence

The proof stays attached to the runtime state.

actorsvc_runtime
scopeworkspace_scope
timestamp2026-04-26T14:12:09Z
policylimit_check.passed
intentintent_042
signatureverified
ledgerentry_042
statusaudit_ready