Documentation
dispute.markets is a sandbox payment gateway for transactions, card-dispute lifecycles, evidence, and reports — built as a testbed for agentic workflows. The portal and the API expose the same surface; pick whichever fits the job.
Getting started
Sign up, verify your email, generate synthetic data, and walk a dispute from open to resolved.
Dispute lifecycle
Stages, statuses, reason codes, response windows, fees, and how the portal models them.
Dev panel
Generate, advance, and reset — the three buttons that drive the sandbox.
API reference
The HTTP API behind every UI flow. Same routes the agent calls.