Connect to your stack
REST APIs, webhooks, agent tools, and embeddable checkout — built for developers and operators who need reliable crypto payment infrastructure.
Definition
What is Settlematic integrations?
Settlematic integrates via REST API, signed webhooks, iframe embeds, CSV exports, and Claude MCP for agent workflows. All modules share one authentication and event model.
REST
API
OpenAPI across all modules
HMAC
Webhooks
Signed event deliveries
MCP
Agents
Claude workflow tools
iframe
Embeds
Checkout in your UI
Integration catalog
REST API
liveCreate invoices, payment links, gateway sessions, and payroll runs programmatically.
Webhooks
liveSigned HMAC deliveries with retry, event logs, and idempotency keys.
Claude MCP
liveAgent-driven invoice creation, payment status checks, and workflow automation.
Embeds
liveiframe checkout for payment links and gateway sessions inside your app.
CSV exports
livePayments, tax, and payroll data for accounting and reconciliation.
QuickBooks / Xero
roadmapExport pipelines for reconciliation with accounting software.
Developers
One API across all modules
Authenticate with scoped API keys. Create invoices, open gateway sessions, trigger pay runs, and subscribe to webhooks — all from OpenAPI-documented REST endpoints with testnet and mainnet environments.
Developer resources
Operators
Webhooks your finance team can trust
Every payment event delivers with an HMAC signature your backend verifies. Event logs show retries and payloads — so engineering and ops debug from the same source of truth.
See the payment flow
Agents
Claude MCP for payment workflows
Connect Settlematic to agent workflows — create invoices, check payment status, and automate ops from Claude Desktop or custom MCP clients without writing glue scripts.
MCP setup guide
Finance
Exports that close the books
CSV exports for payments, tax lines, and payroll data feed accounting workflows today. QuickBooks and Xero pipelines are on the roadmap for direct reconciliation sync.

Common integration patterns
How engineering and finance teams connect Settlematic to products, agents, and accounting workflows.
Provision on payment
Subscribe to payment.confirmed webhooks to unlock SaaS seats, ship digital goods, or update CRM records the moment crypto lands.
Embed checkout
Drop iframe checkout into your app for payment links or gateway sessions — same detection rails as hosted pages.
Automate invoicing
Create invoices and recurring schedules from your backend when subscriptions renew or projects close.
Platform payouts
Combine Gateway webhooks with Payroll to route merchant settlements and team disbursements from one event stream.
Agent-driven ops
Use Claude MCP to draft invoices, chase overdue payments, and summarize ledger activity for finance standups.
Month-end close
Export payment and payroll CSVs for reconciliation with your accounting stack — one source of truth across modules.
Yes. Scoped API keys work across Collect, Gateway, Payroll, and Treasury. Permissions limit which endpoints each key can access.
Start invoicing, accepting, and paying in crypto
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