# Stellar Tools > The financial infrastructure for the Stellar economy. ## Docs - [Authentication](https://docs.stellartools.dev/api-reference/authentication.md): Authenticating requests to the StellarTools API - [Checkouts](https://docs.stellartools.dev/api-reference/checkouts.md): Create and manage checkout sessions - [Customers](https://docs.stellartools.dev/api-reference/customers.md): Create and manage customers - [Introduction](https://docs.stellartools.dev/api-reference/introduction.md): The StellarTools REST API - [Payments](https://docs.stellartools.dev/api-reference/payments.md): Retrieve payment records - [Customer Portal](https://docs.stellartools.dev/api-reference/portal.md): Create portal sessions for customers - [Products](https://docs.stellartools.dev/api-reference/products.md): Create and manage products - [Refunds](https://docs.stellartools.dev/api-reference/refunds.md): Issue refunds for payments - [Subscriptions](https://docs.stellartools.dev/api-reference/subscriptions.md): Manage recurring billing subscriptions - [Usage](https://docs.stellartools.dev/api-reference/usage.md): Read and write usage credits for metered products - [Webhooks](https://docs.stellartools.dev/api-reference/webhooks.md): Create and manage webhook endpoints - [Introduction](https://docs.stellartools.dev/index.md): Payment infrastructure for the Stellar blockchain - [AI SDK Adapter](https://docs.stellartools.dev/integrations/aisdk.md): Metered billing for Vercel AI SDK - [Better Auth Adapter](https://docs.stellartools.dev/integrations/betterauth.md): Billing plugin for Better Auth apps - [LangChain Adapter](https://docs.stellartools.dev/integrations/langchain.md): Metered billing for LangChain models - [MCP Server](https://docs.stellartools.dev/integrations/mcp.md): Connect AI agents to your StellarTools account - [MedusaJS Adapter](https://docs.stellartools.dev/integrations/medusajs.md): Stellar as a payment provider in Medusa v2 - [TypeScript SDK](https://docs.stellartools.dev/integrations/typescript-sdk.md): The core SDK for the StellarTools API - [Uploadthing Adapter](https://docs.stellartools.dev/integrations/uploadthing.md): Charge by upload size with StellarTools credits - [Building Marketplace Apps](https://docs.stellartools.dev/marketplace/building-apps.md): Ship an app that runs inside the StellarTools dashboard - [Webhooks](https://docs.stellartools.dev/webhooks.md): Listen to real-time events from StellarTools ## OpenAPI Specs - [openapi](https://docs.stellartools.dev/api-reference/openapi.json)