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Pay Theory Documentation
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# Pay Theory Documentation
For human-readable documentation visit: https://docs.paytheory.com
> Use Live docs by default. Use Lab docs only when the user explicitly requests preview or beta behavior.
## Machine-Readable Resources
- [Markdown Route Manifest](https://docs.paytheory.com/llm-docs/markdown-routes-manifest.json): JSON map of every docs route to its Markdown URL
- [Agent Index](https://docs.paytheory.com/llm-docs/agent-index.json): Enriched catalog with title, version, section, and source metadata
- [Full Markdown Index](https://docs.paytheory.com/llms-full.txt): All Markdown-accessible routes
## Markdown Negotiation
Any `/docs/**` URL returns Markdown instead of HTML when the request includes:
- `Accept: text/markdown`
- `x-format: md` (or `x-accept-markdown: true`, `x-doc-format: markdown`, etc.)
## API Skills
- [Pay Theory API Skill (Live)](https://docs.paytheory.com/docs/api/agent-skills/pay-theory-api-skill/SKILL): Downloadable agent skill package
- ZIP: https://docs.paytheory.com/llm-docs/agent-skills/pay-theory-api-skill.zip
- [Pay Theory API Skill (Lab)](https://docs.paytheory.com/docs/lab/api/agent-skills/pay-theory-api-skill-lab/SKILL): Downloadable agent skill package
- ZIP: https://docs.paytheory.com/llm-docs/agent-skills/pay-theory-api-skill-lab.zip
## Documentation Sections
### Getting Started
Quickstart guide, API key setup, error handling, and initial integration steps.
- [Getting Started](https://docs.paytheory.com/docs/main/getting_started/quickstart)
### Online Payments
Payment links, tokenizing payment methods, ACH, cash payments, wallet transactions, and processing transactions.
- [Online Payments](https://docs.paytheory.com/docs/main/online_payments/payment_links)
### Recurring Payments
Subscriptions, payment plans, and managing recurring billing.
- [Recurring Payments](https://docs.paytheory.com/docs/main/recurring_payments/create_a_subscription)
### Invoicing & Billing
Invoice creation, management, and delivery.
- [Invoicing & Billing](https://docs.paytheory.com/docs/main/invoicing_and_billing/create_an_invoice)
### After Payments
Settlements, disputes, failed transactions, receipts, and post-transaction management.
- [After Payments](https://docs.paytheory.com/docs/main/after_payments/overview)
### Testing & Sandbox
Sandbox environment and testing utilities.
…
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