Operating pillars
4
Capability layers rendered with explicit operational behavior.
Platform Capability
Accounts And Ledger With Deterministic Guarantees
Model balances, holds, and postings on a correctness-first ledger foundation that stays reviewable under scale and operational pressure.
- 01Double-entry safety
- 02Hold/release logic
- 03Reconciliation visibility
Client apps
01API requests enter with tenant scope.
API edge
02Contracts, auth, and idempotency checked first.
Policy engine
03Limits, risk, and routing rules decide path.
Ledger core
04Minor-unit entries become the financial source.
Provider routes
05Rail selection and failover stay explicit.
Webhook runtime
06Signed events leave with retry history.
Runtime boundary
Tenant configattached
Rate policyattached
Auth scopeattached
Evidence trailattached
Control result
one map
Payments, cards, accounts, ledgers, and webhooks inherit one operating model.
Visual center
Control plane
Tenant-aware orchestration with explicit states, traces, and policy boundaries.
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
Account state stays tied to double-entry postings, holds, releases, and tenant boundaries.
Entrypoint
POST /accounts
01Open
Create account state
Balances and account ownership are created inside tenant-scoped boundaries.
02Reserve
Apply hold
Funds can be reserved without hiding the source or release condition.
03Post
Write ledger entries
Debit and credit entries keep money state deterministic.
04Release
Settle or reverse
Holds, reversals, and settlement outcomes are explicit state transitions.
05Review
Inspect balance history
Operators trace balances through ledger history and reconciliation evidence.
Events emitted
account.created
balance.hold.created
ledger.entry.posted
balance.released
Evidence retained
account_id
balance_snapshot
hold_reference
ledger_entry
tenant
Failure path proof
Account balances do not become folklore.
Holds, releases, postings, reversals, and tenant boundaries are kept visible at the account level.
01
Stuck hold
Incident
Funds are reserved for a payment that never reaches final settlement.
Zentra path
Hold state remains visible until release, expiry, or operator review resolves it.
Evidence
Hold reference, account ID, source request, expiry state, and release entry are retained.
02
Tenant boundary check
Incident
An operator attempts to inspect or mutate an account outside their tenant scope.
Zentra path
Authorization and tenant context gate the action before account state is exposed.
Evidence
Actor, tenant, role, denied action, and timestamp are retained for audit review.
Lifecycle proof
From API request to operational evidence.
This page makes the runtime visible: POST /accounts, the state path, emitted events, and evidence a team can inspect when the happy path breaks.
API request
liveawait 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
Capability model
Operational building blocks, not vague feature claims.
Each pillar below maps product capability to runtime behavior teams can reason about before launch.
01
Double-entry foundation
Maintain debit and credit integrity at every post.
02
Holds and releases
Reserve funds safely while preserving clear settlement and release semantics.
03
Tenant-aware account models
Segment account operations by tenant with explicit boundary enforcement.
04
Reconciliation workflows
Support periodic and real-time reconciliation from one transaction history.
Visual center
Control plane
Tenant-aware orchestration with explicit states, traces, and policy boundaries.
- Keep double-entry foundation 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.
API to product
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.
create account
await zentra.accounts.create({
customer: "customer_ref",
currency: "ledger_currency",
account_type: "operating",
idempotency_key: "acct_live_042"
})System response
status
active
event
account.created
evidence
account_id
entrypoint
POST /accounts
The first integration proof should show POST /accounts, emitted events, retained evidence, and visible product state.
Webhook replay
01timeoutevent account.createdretained
02signature verifiedevent account.createdretrying
03deliveredevent account.createdresolved
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
Operational proof
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.
Holds, releases, reversals, and postings stay readable against one balance history.
Balance disagreement is traced to ledger entries and account boundaries, not parallel account snapshots.
Tenant account models preserve ownership, available balance, pending balance, and reconciliation context.
Trust layer
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