# Pycer - enterprise proprietary Payment Gateway

> Pycer is an enterprise proprietary payment gateway platform built on PHP 8.3. It supports Pycer Direct Financial Rails, multi-brand tenancy, white-label checkout, double-entry ledger, and plugin extensibility. Zero transaction fees, Proprietary Commercial licensed.

## Documentation

- [Introduction](https://pycer-docs.quantivogroup.com/introduction.md): Overview of Pycer, core features, audience guide
- [Quick Start](https://pycer-docs.quantivogroup.com/quickstart.md): Deploy and accept your first payment in 5 minutes
- [Installation](https://pycer-docs.quantivogroup.com/installation.md): Production deployment on shared hosting, VPS, or Docker
- [How Pycer Works](https://pycer-docs.quantivogroup.com/fundamentals/how-pycer-works.md): End-to-end payment architecture
- [Brands & Multi-Tenancy](https://pycer-docs.quantivogroup.com/fundamentals/brands.md): Isolated merchant tenants
- [Payment Flow & States](https://pycer-docs.quantivogroup.com/fundamentals/payment-flow.md): Transaction lifecycle and statuses
- [Gateways](https://pycer-docs.quantivogroup.com/fundamentals/gateways.md): Payment gateway types and routing
- [Ledger & Accounting](https://pycer-docs.quantivogroup.com/fundamentals/ledger.md): Double-entry bookkeeping system
- [Plugins & Extensions](https://pycer-docs.quantivogroup.com/fundamentals/plugins.md): Plugin architecture overview
- [Domains & White-Label](https://pycer-docs.quantivogroup.com/fundamentals/domains.md): Custom domain setup per brand
- [Brands Management](https://pycer-docs.quantivogroup.com/people/brands.md): Create and manage brands
- [Staff Management](https://pycer-docs.quantivogroup.com/people/staff.md): Invite and manage team members
- [Roles & Permissions](https://pycer-docs.quantivogroup.com/people/roles.md): Built-in roles and permission matrix
- [Customers](https://pycer-docs.quantivogroup.com/people/customers.md): Customer profiles and PII encryption
- [Payment Links](https://pycer-docs.quantivogroup.com/payments/payment-links.md): Create shareable payment links
- [Transactions](https://pycer-docs.quantivogroup.com/payments/transactions.md): View and manage transactions
- [Refunds](https://pycer-docs.quantivogroup.com/payments/refunds.md): Issue and track refunds
- [Invoices](https://pycer-docs.quantivogroup.com/payments/invoices.md): Invoice creation and management
- [Ledger UI](https://pycer-docs.quantivogroup.com/payments/ledger.md): Ledger entries and balance summaries
- [Gateway Configuration](https://pycer-docs.quantivogroup.com/gateways/configuration.md): Set up payment gateways
- [Manual Payment Methods](https://pycer-docs.quantivogroup.com/gateways/manual-methods.md): Offline payment methods
- [Currencies & Exchange Rates](https://pycer-docs.quantivogroup.com/gateways/currencies.md): Multi-currency support
- [SMS Auto-Verification](https://pycer-docs.quantivogroup.com/gateways/sms-verification.md): Auto-confirm via SMS parsing
- [Branding & Logo](https://pycer-docs.quantivogroup.com/appearance/branding.md): Customize brand appearance
- [Themes](https://pycer-docs.quantivogroup.com/appearance/themes.md): Checkout page themes
- [Landing Page](https://pycer-docs.quantivogroup.com/appearance/landing-page.md): Public landing page config
- [Email Configuration](https://pycer-docs.quantivogroup.com/notifications/email.md): SMTP setup and templates
- [Outbound Webhooks](https://pycer-docs.quantivogroup.com/notifications/webhooks.md): Webhook endpoint management
- [Telegram Alerts](https://pycer-docs.quantivogroup.com/notifications/telegram.md): Push notifications via Telegram
- [SMS Center](https://pycer-docs.quantivogroup.com/notifications/sms-center.md): SMS log management
- [Companion App](https://pycer-docs.quantivogroup.com/mobile/companion-app.md): Android SMS forwarding app
- [Device Management](https://pycer-docs.quantivogroup.com/mobile/devices.md): Paired device management
- [SMS Templates & Logs](https://pycer-docs.quantivogroup.com/mobile/sms-templates.md): Regex templates for SMS parsing
- [Dashboard & Reports](https://pycer-docs.quantivogroup.com/reports/dashboard.md): Key metrics and visualizations
- [Audit Log](https://pycer-docs.quantivogroup.com/reports/audit-log.md): Compliance audit trail
- [Balance Verification](https://pycer-docs.quantivogroup.com/reports/balance-verification.md): Ledger reconciliation
- [Disputes & Chargebacks](https://pycer-docs.quantivogroup.com/reports/disputes.md): Dispute management
- [General Settings](https://pycer-docs.quantivogroup.com/system/settings.md): Application configuration
- [Domain Setup](https://pycer-docs.quantivogroup.com/system/domains.md): DNS and SSL per brand
- [Plugin Manager](https://pycer-docs.quantivogroup.com/system/plugins.md): Upload, activate, update plugins
- [Addon Manager](https://pycer-docs.quantivogroup.com/system/addons.md): Manage addon plugins
- [Languages](https://pycer-docs.quantivogroup.com/system/languages.md): Multi-language management
- [System Update](https://pycer-docs.quantivogroup.com/system/system-update.md): One-click updates
- [Login & Sessions](https://pycer-docs.quantivogroup.com/security/login.md): Authentication and sessions
- [Two-Factor Authentication](https://pycer-docs.quantivogroup.com/security/two-factor.md): TOTP 2FA setup
- [Password Reset](https://pycer-docs.quantivogroup.com/security/password-reset.md): Password recovery
- [API Keys](https://pycer-docs.quantivogroup.com/security/api-keys.md): Generate and manage API keys
- [Developer Hub](https://pycer-docs.quantivogroup.com/security/developer-hub.md): Webhook logs and API request logs
- [My Account](https://pycer-docs.quantivogroup.com/security/my-account.md): Personal settings
- [Customer Checkout Experience](https://pycer-docs.quantivogroup.com/checkout/customer-experience.md): What customers see

## API Reference

- [API Overview](https://pycer-docs.quantivogroup.com/api/overview.md): Base URL, authentication, format, rate limits
- [Authentication](https://pycer-docs.quantivogroup.com/api/authentication.md): Bearer token auth and key scopes
- [Errors](https://pycer-docs.quantivogroup.com/api/errors.md): Error codes and response format
- [Webhooks](https://pycer-docs.quantivogroup.com/api/webhooks.md): Event types, signature verification, retries

## Developer

- [API Integration Quick Start](https://pycer-docs.quantivogroup.com/developer/quickstart.md): Build a payment form
- [Testing & Test Cards](https://pycer-docs.quantivogroup.com/developer/testing.md): Test without real money
- [Webhook Integration Guide](https://pycer-docs.quantivogroup.com/developer/webhook-integration.md): End-to-end webhook receiver
- [PHP SDK](https://pycer-docs.quantivogroup.com/developer/integration/php.md): Official PHP SDK
- [Laravel SDK](https://pycer-docs.quantivogroup.com/developer/integration/laravel.md): Laravel package
- [Node.js SDK](https://pycer-docs.quantivogroup.com/developer/integration/nodejs.md): TypeScript SDK
- [Python SDK](https://pycer-docs.quantivogroup.com/developer/integration/python.md): Python integration
- [WooCommerce Plugin](https://pycer-docs.quantivogroup.com/developer/integration/woocommerce.md): WordPress/WooCommerce
- [WHMCS Module](https://pycer-docs.quantivogroup.com/developer/integration/whmcs.md): WHMCS payment gateway
- [Plugin Overview](https://pycer-docs.quantivogroup.com/developer/plugins/overview.md): Plugin architecture
- [Directory Structure](https://pycer-docs.quantivogroup.com/developer/plugins/directory-structure.md): Plugin file layout
- [Manifest Reference](https://pycer-docs.quantivogroup.com/developer/plugins/manifest.md): manifest.json fields
- [Hook System](https://pycer-docs.quantivogroup.com/developer/plugins/hooks.md): Complete hook catalog
- [Event System](https://pycer-docs.quantivogroup.com/developer/plugins/events.md): Built-in events
- [Capabilities](https://pycer-docs.quantivogroup.com/developer/plugins/capabilities.md): Capability enum values
- [Plugin Lifecycle](https://pycer-docs.quantivogroup.com/developer/plugins/lifecycle.md): Install, activate, deactivate, uninstall
- [Gateway Plugin](https://pycer-docs.quantivogroup.com/developer/plugin-types/gateway.md): Build a payment gateway
- [Addon Plugin](https://pycer-docs.quantivogroup.com/developer/plugin-types/addon.md): Build an addon
- [Theme Plugin](https://pycer-docs.quantivogroup.com/developer/plugin-types/theme.md): Build a checkout theme
- [Integration Plugin](https://pycer-docs.quantivogroup.com/developer/plugin-types/integration.md): Build a third-party integration
- [Internationalization](https://pycer-docs.quantivogroup.com/developer/translations.md): i18n and translations
- [AI Overview](https://pycer-docs.quantivogroup.com/developer/ai/overview.md): AI integration features
- [MCP Server](https://pycer-docs.quantivogroup.com/developer/ai/mcp.md): Model Context Protocol
- [AI Skills](https://pycer-docs.quantivogroup.com/developer/ai/skills.md): Documentation AI skills

## Resources

- [Features](https://pycer-docs.quantivogroup.com/resources/features.md): Complete feature list
- [Architecture](https://pycer-docs.quantivogroup.com/resources/architecture.md): Technical architecture
- [Roadmap](https://pycer-docs.quantivogroup.com/resources/roadmap.md): Development roadmap
- [Ecosystem & Marketplace](https://pycer-docs.quantivogroup.com/resources/ecosystem.md): SDKs, plugins, community
- [Security & Compliance](https://pycer-docs.quantivogroup.com/resources/security-compliance.md): Encryption, compliance, security
- [Performance & Scaling](https://pycer-docs.quantivogroup.com/resources/performance-scaling.md): Optimization guide
- [Data Backup & Export](https://pycer-docs.quantivogroup.com/resources/backup-export.md): Backup and restore
- [Migration Guide](https://pycer-docs.quantivogroup.com/resources/migration-guide.md): Version upgrades
- [Rate Limiting](https://pycer-docs.quantivogroup.com/resources/rate-limiting.md): API rate limit tiers
- [Common Errors](https://pycer-docs.quantivogroup.com/resources/common-errors.md): Troubleshooting guide
- [FAQ](https://pycer-docs.quantivogroup.com/resources/faq.md): Frequently asked questions
- [Debug Mode](https://pycer-docs.quantivogroup.com/resources/debug-mode.md): Enabling debug mode
- [Contributing Guide](https://pycer-docs.quantivogroup.com/resources/contributing.md): How to contribute
- [Code of Conduct](https://pycer-docs.quantivogroup.com/resources/code-of-conduct.md): Community standards
- [Changelog](https://pycer-docs.quantivogroup.com/resources/changelog.md): Release history
- [Glossary](https://pycer-docs.quantivogroup.com/resources/glossary.md): Terminology reference
- [Code Examples](https://pycer-docs.quantivogroup.com/resources/code-examples.md): Multi-language payment examples
- [Local Setup](https://pycer-docs.quantivogroup.com/resources/local-setup.md): Run Pycer locally for development

## API Reference Endpoints

- [Acknowledge Push Notifications](https://pycer-docs.quantivogroup.com/api-reference/acknowledge-push-notifications.md): Acknowledge push notifications from companion app
- [Bulk Revoke Devices](https://pycer-docs.quantivogroup.com/api-reference/bulk-revoke-devices.md): Bulk revoke paired companion devices
- [Create Customer](https://pycer-docs.quantivogroup.com/api-reference/create-customer.md): Create a new customer record
- [Dispatch Test Webhook](https://pycer-docs.quantivogroup.com/api-reference/dispatch-test-webhook.md): Send a test webhook event
- [Generate API Key](https://pycer-docs.quantivogroup.com/api-reference/generate-api-key.md): Generate a new API key
- [Get Pending Outbound SMS](https://pycer-docs.quantivogroup.com/api-reference/get-pending-outbound-sms.md): Retrieve pending outbound SMS messages
- [Initiate Payment Intent](https://pycer-docs.quantivogroup.com/api-reference/initiate-payment-intent.md): Create a payment intent for checkout
- [List API Keys](https://pycer-docs.quantivogroup.com/api-reference/list-api-keys.md): List all API keys for a brand
- [List Companion App Notifications](https://pycer-docs.quantivogroup.com/api-reference/list-companion-app-notifications.md): List notifications from companion app
- [List Customers](https://pycer-docs.quantivogroup.com/api-reference/list-customers.md): List all customers for a brand
- [List Outbound SMS Queue](https://pycer-docs.quantivogroup.com/api-reference/list-outbound-sms-queue.md): List outbound SMS delivery queue
- [List Paired Companion Devices](https://pycer-docs.quantivogroup.com/api-reference/list-paired-companion-devices.md): List all paired companion devices
- [List Refunds](https://pycer-docs.quantivogroup.com/api-reference/list-refunds.md): List all refunds for a brand
- [List SMS Templates](https://pycer-docs.quantivogroup.com/api-reference/list-sms-templates.md): List SMS verification templates
- [List Transactions](https://pycer-docs.quantivogroup.com/api-reference/list-transactions.md): List all transactions for a brand
- [Pair Mobile Companion Device](https://pycer-docs.quantivogroup.com/api-reference/pair-mobile-companion-device.md): Pair a new companion device
- [Refresh Access Token](https://pycer-docs.quantivogroup.com/api-reference/refresh-access-token.md): Refresh an expired access token
- [Request Transaction Refund](https://pycer-docs.quantivogroup.com/api-reference/request-transaction-refund.md): Request a refund for a transaction
- [Retrieve Customer](https://pycer-docs.quantivogroup.com/api-reference/retrieve-customer.md): Retrieve a customer by ID
- [Retrieve Dashboard Summary](https://pycer-docs.quantivogroup.com/api-reference/retrieve-dashboard-summary.md): Get dashboard metrics summary
- [Retrieve Device Connection Status](https://pycer-docs.quantivogroup.com/api-reference/retrieve-device-connection-status.md): Check companion device connection status
- [Retrieve Payment Details](https://pycer-docs.quantivogroup.com/api-reference/retrieve-payment-details.md): Retrieve payment intent details
- [Retrieve Refund](https://pycer-docs.quantivogroup.com/api-reference/retrieve-refund.md): Retrieve a refund by ID
- [Retrieve SMS Filter Rules](https://pycer-docs.quantivogroup.com/api-reference/retrieve-sms-filter-rules.md): Retrieve SMS filter rules
- [Retrieve Transaction](https://pycer-docs.quantivogroup.com/api-reference/retrieve-transaction.md): Retrieve a transaction by ID
- [Retry Outbound SMS](https://pycer-docs.quantivogroup.com/api-reference/retry-outbound-sms.md): Retry a failed outbound SMS
- [Revoke API Key](https://pycer-docs.quantivogroup.com/api-reference/revoke-api-key.md): Revoke an API key
- [Revoke Paired Device](https://pycer-docs.quantivogroup.com/api-reference/revoke-paired-device.md): Revoke a paired companion device
- [Submit Device Heartbeat](https://pycer-docs.quantivogroup.com/api-reference/submit-device-heartbeat.md): Submit companion device heartbeat
- [Submit Received SMS](https://pycer-docs.quantivogroup.com/api-reference/submit-received-sms.md): Submit a received SMS for processing
- [System Health Check](https://pycer-docs.quantivogroup.com/api-reference/system-health-check.md): Check system health status
- [Update SMS Template](https://pycer-docs.quantivogroup.com/api-reference/update-sms-template.md): Update an SMS verification template
- [Verify Custom Domain](https://pycer-docs.quantivogroup.com/api-reference/verify-custom-domain.md): Verify a custom domain configuration
- [Webhook Delivery Log](https://pycer-docs.quantivogroup.com/api-reference/webhook-delivery-log.md): Retrieve webhook delivery logs

## Optional

- [GitHub Repository](https://github.com/quantivo/pycer): Source code and issues
- [Website](https://pycer.quantivogroup.com): Official Pycer website
- [Community Discussions](https://github.com/quantivo/pycer/discussions): Community forum