> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cloud.coinbase.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Check Payment Requirements

## Overview

Checks what payment an endpoint requires without actually paying. Useful for inspecting non-Bazaar x402 services before calling them.

## Try it

```
What does this API cost to use?
```

```
Check the payment requirements for https://example.com/api/data
```

## What it returns

* Required payment amount (in USDC)
* Accepted payment schemes
* Network(s) the endpoint accepts (often Base, Polygon, or Solana — depends on the service)
* Endpoint details

## Notes

* For Bazaar services, use [Get resource details](/agentic-wallet/mcp/mcp-tools/get-resource-details) (`bazaar_get_resource_details`) instead — it includes richer information like schemas and descriptions.
* This tool is most useful when you have a specific x402 URL from outside the Bazaar and want to inspect it before paying.

## Next steps

* [Make an x402 request](/agentic-wallet/mcp/mcp-tools/make-x402-request): Pay and call the endpoint
* [List Bazaar resources](/agentic-wallet/mcp/mcp-tools/list-bazaar-resources): Find services in the curated marketplace