6 simulators

Hosted payment simulators your CI can call

Host, HSM, POS, card, acquirer and issuer simulators. Hosted, scriptable and ready for CI—so you can test the whole transaction chain.

Hosted endpointsScriptable flowsCI-ready

ISO 8583 · APDU · HSM commands · hosted endpoints for every branch

HostHSMPOSCardAcquirerIssuerHostedCLICI

Host, HSM, POS, card, acquirer and issuer

Exercise each component on its own, then connect the pieces for end-to-end payment testing.

Host Simulator01

Model authorization endpoints with custom responses, timeouts and unsolicited messages.

Message processing

HSM Simulator02

Test payShield-style commands, PIN operations and key management without a physical HSM.

Cryptography

POS Simulator03

Run terminal-side sales, reversals and settlement flows through manual or scripted execution.

Terminal flows

APDU / Card Simulator04

Explore chip-card exchanges, from ATR and application selection through GENERATE AC.

Card conversations

Acquirer Host05

The Host Simulator in acquirer mode: acquiring host behavior and scheme-oriented transaction flows for issuer-side testing.

Acquiring flows

Issuer System06

Configure authorization decisions, approval rules and response codes for predictable scenarios.

Authorization

Scripted from a pipeline,
inspectable to the bit

Script the flow. Inspect the message. Repeat the scenario with a clear view of every step.

Payment flow / trace Illustrative preview
Scenario preview
›authorization / expected approval
00:00INITLoad synthetic transaction
00:01OUT0200 · Financial request
DE 03 000000 · DE 11 000001
00:02IN0210 · Financial response
DE 39 00 · Approved
Expected response matched

Illustrative flow and message fields only. This preview makes no network requests.

CLI & scripting

Drive repeatable simulator runs from command-line workflows and CI pipelines.

Scenario engine

Compose multi-step flows and verify the fields that matter at each stage.

Real-time debugging

Inspect formatted messages alongside raw hexadecimal data as they cross the wire.

Mock data generation

Use synthetic card, track, amount and EMV data to exercise different test conditions.

Load testing

Exercise sustained transaction volumes to expose connection, pool and timeout issues.

API testing

Test REST integrations alongside ISO 8583 flows across modern and legacy systems.

No terminal on your desk, no slot in the lab queue

Run the full transaction chain against hosted simulators instead of waiting for hardware or a shared test lab.

01

Rapid test setup

Start from hosted endpoints and prepared scenarios, without procuring physical test equipment.

02

Automated regression

Connect simulator runs to CI so repeatable payment checks become part of every build.

03

Developer-friendly APIs

Use documented provisioning and control interfaces within your existing testing workflow.

04

Performance visibility

Observe throughput and response timing under realistic host behavior and transaction loads.

05

Isolated test environments

Exercise your integration with synthetic data in test environments separate from production rails.

06

Hard-to-reproduce cases

Introduce timeouts, partial responses and malformed fields before those failures reach production.

Hosted simulation, answered

Endpoints, CI, data and what runs where.

The same simulators ship in the desktop Studio and as hosted endpoints. Locally they run on your machine for development; hosted, they give pipelines and distributed teams a stable URL instead of an environment per branch.

Yes. Provisioning and control interfaces are documented, and simulator runs can be scripted from command-line workflows, so repeatable payment checks become part of every build.

Host, HSM, POS, APDU / card, acquirer and issuer — exercised individually or connected for an end-to-end chain from terminal to authorization decision.

No. Hosted environments run on synthetic card, track, amount and EMV data, isolated from production rails.

That is the point of a simulator. Custom responses, response-window expiry, partial responses and malformed fields are all configurable, so those branches get exercised before production does.

Hosted endpoints come with Pro. Tell us the simulators and the volume you need and we will provision the environment; the desktop Studio stays free and open source under the GNU AGPL v3.

Talk to us about hosted simulators

Tell us which endpoints you need and the volume you are testing at.

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