# Using pay
> Wrap pass-through tools and agents when APIs return HTTP 402.

- [Using pay](/docs/using-pay/index.md): Make wallet-approved HTTP 402 requests, fund accounts, manage subscriptions, and discover providers.
- [Pass-through commands](/docs/using-pay/pass-through-commands/index.md): Wrap HTTP clients and agent CLIs while pay handles HTTP 402 payment challenges.
- [Top-up Account](/docs/using-pay/topup/index.md): Fund a mainnet account via PayPal, Venmo, Apple Pay, or any Solana mobile wallet.
- [Manage Accounts](/docs/using-pay/manage-accounts/index.md): Switch between local accounts, create new ones, move stablecoins with pay push, and back up or restore the secret key.
- [Manage Subscriptions](/docs/using-pay/subscriptions/index.md): Activate, list, inspect, and cancel MPP subscription delegations.
- [Skills](/docs/using-pay/skills/index.md): The community catalog of HTTP 402–gated APIs that pay and AI agents read from.