Execution Assurance for Cross-Border Payments

Execution Assurance API

Execution Assurance for payment corridors. A clear GO / DEGRADED / NO-GO decision before funds move.

Built for payment operations, treasury, and infrastructure teams managing multiple partners.

API v1 · Engine v1.3 ← paykx.co.uk

Design Partner Programme Try Live Demo →

Example Replay Report ↓ · API Documentation ↓

Execution Assurance

Independent GO / DEGRADED / NO-GO decisions before funds move.

Idempotent, safe retries

Pass an idempotency_key — repeated calls return the original result, never execute twice. Mismatched reuse is rejected.

Fails closed

Unknown corridors, missing keys, and thin data return DEGRADED — never silently pass.

Why PAYKX?

Tool	What it covers
Fraud tools	Customer risk
Orchestrators	Payment routing
Banks	Execute payments
PAYKX	Execution assurance before funds move

Honest by design

What it is

Execution Assurance — not a payment processor
GO / DEGRADED / NO-GO on every check
Starting with GB↔NG (high-friction, high-volume)

Current platform scope

Corridor Intelligence Platform: Live telemetry on the roadmap. Assessments currently use replay analysis and calibrated corridor baselines.
Supported corridors: GB↔NG. Others return DEGRADED by design.
Commercial controls: API access by application; billing planned.

Benchmark Reproducible Engine Benchmark

Engineering benchmark — synthetic data only, not customer transactions. 750,000 SEPA-style transactions scored with the production Assessment Engine v1.3. Fully reproducible via committed code (seed: 42).

63.1%

36.2%

DEGRADED

0.7%

NO-GO

0.83

Avg Score

Validated FCA Digital Sandbox

Tested on synthetic transaction data, April 2026.

April 2026

Sandbox Run

71%

DEGRADED

29%

✓ Live API aligned with sandbox behaviour

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