Connect to Any PSP.
Test, Certify & Go Live — Fast.
PayServ's Multi-PSP Integration Platform is an AI-powered testing and certification engine that lets merchants evaluate, integrate, and certify with any Payment Service Provider in days — not months. One platform, every PSP, zero manual overhead.
One Platform to Evaluate Any PSP — Simultaneously
The PayServ Multi-PSP Integration Platform is an ISV-grade middleware and testing environment built specifically for engineering and payments teams. Instead of building separate integrations for each PSP — and running manual certification test scripts one by one — PayServ connects to all of them in parallel, automates the full test lifecycle, and generates exportable certification reports automatically.
Whether you're evaluating your first PSP or migrating from one to another, the platform gives you a complete picture of functional coverage, failure modes, and performance benchmarks — before a single line of production code ships.
Four Pillars of AI-Driven PSP Integration
From sandbox onboarding to live certification — every step is automated, auditable, and accelerated by PayServ's AI agent layer.
Parallel Multi-PSP Evaluation
Configure once, test everywhere. PayServ executes your full payment flow — card authorisation, capture, void, refund, 3DS, and webhooks — simultaneously against every PSP you're evaluating. Side-by-side results make PSP selection an informed data decision, not a gut call.
- Simultaneous execution across all configured PSPs
- Unified result dashboard with per-PSP breakdown
- Response time, decline rate & error code benchmarking
- Reproducible test runs for regression tracking
AI Copilot for Integration Questions
PayServ Copilot is an AI agent trained on every PSP's API documentation, certification requirements, and integration gotchas. Ask it anything — it generates working code snippets, explains error codes, maps your use cases to the correct API calls, and flags compliance edge cases in real time.
- Real-time answers to PSP integration questions
- Auto-generates integration code per PSP
- Error code resolution and retry guidance
- 3DS, SCA, and tokenisation advisory built-in
"Ask PayServ Copilot any question about PSP testing and integration. It answers questions that would have taken your team days to research."
Automated PSP Certification
Every PSP requires merchants to complete a formal certification test suite before going live. PayServ maps every PSP's published certification checklist to automated test cases and runs them end-to-end. Certification reports are generated in the exact format PSP compliance teams require.
- PSP-specific certification checklists pre-loaded
- Auto-executed against sandbox and staging environments
- Exportable certification reports (PDF & CSV)
- Re-certify automatically on every config change
Performance & Load Testing
Simulate thousands of concurrent payment transactions to stress-test PSP sandbox environments before you go live. Identify throughput limits, latency spikes, and failure behaviour under peak load — so your production launch is risk-free.
- Configurable concurrent transaction volumes
- Latency percentile reporting (p50, p95, p99)
- PSP throttle and rate-limit detection
- Peak load simulation for seasonal traffic
From Sandbox Onboarding to Certified Go-Live in One Sprint
PayServ's integration workflow is engineered for speed without sacrificing compliance rigour. The three-phase flow takes any merchant from PSP credential setup to a fully certified, production-ready integration in a single engineering sprint.
Connect Your PSP Credentials & Configure Payment Flows
Add your sandbox credentials for one or more PSPs via the PayServ dashboard. Define the payment flows relevant to your business — one-off payments, subscriptions, refunds, 3DS — and let AI Copilot validate your configuration before a single test runs.
- No credential migration required
- Sandbox & staging environment support
- AI-validated flow configuration
Run Automated Test Suites Across All PSPs in Parallel
Execute the full PayServ test harness — functional, regression, and performance tests — across all configured PSPs simultaneously. AI generates additional edge-case scenarios based on your business context. Certification reports are produced automatically at the end of each run.
- Parallel multi-PSP execution
- AI-generated edge case coverage
- Exportable certification reports
Deploy with Confidence — with Ongoing Regression Coverage
Once certified, flip to production via a single API endpoint change. PayServ continues to run regression suites on every subsequent PSP API update, routing rule change, or new PSP addition — so your integration never silently breaks.
- Single API endpoint for all PSPs
- Auto-regression on PSP API changes
- Real-time alerting on integration drift
PSPs Supported on the Platform
Pre-built, certified connectors for major global PSPs. Each connector undergoes full regression and certification testing before every platform release. New PSPs are added quarterly.
Stripe
Square
Adyen
PayPal
FiservWhat Merchants Achieve with PayServ
Verifiable metrics from real integrations. PayServ eliminates manual PSP integration overhead at every stage — from evaluation to certification to go-live.
Reduce Team Overhead
AI agents handle the manual effort of reading PSP docs, writing test scripts, and tracking certification checklists — freeing your engineers for product work.
Speed Up Certification
Move from months to days with parallel PSP evaluation and automated certification reporting. The average PayServ customer certifies in under two weeks.
Minimise Integration Risk
Test against multiple PSPs before committing production resources. Catch integration bugs, edge cases, and compliance gaps in the sandbox — never in production.
"PayServ cut our PSP certification time in half. The AI agents answered questions we would have spent days researching, and the parallel test runner gave us a clear picture of which PSP was right for our use case before we wrote a single line of production code."
Start Testing in the PayServ Sandbox Today
Access the full PayServ testing environment with pre-configured PSP sandbox connectors, AI Copilot, and 500+ test scenarios. No credit card required. Get started in minutes, not weeks.