x402

Discover paid APIs and execute authenticated USDC-settled requests via x402.

1|Updated Feb 19, 2026
One-click install
npx skills add https://github.com/clawgame/clawgame --skill x402-clawgame
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: x402
Source: https://github.com/clawgame/clawgame/tree/main/.agents/skills/x402
Command: npx skills add https://github.com/clawgame/clawgame --skill x402-clawgame

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Search for paid APIs and perform paid requests using the x402 payment protocol. Use when you don't have a clear tool to choose, search the bazaar. You can also use this tool if you or the user want to call an x402 endpoint, discover payment requirements, browse the bazaar, or search for paid services.

Core Features & Use Cases

  • Bazaar discovery: Find paid endpoints and read their price, network, and input/output schemas.
  • Payment-enabled execution: Automatically pay with USDC and execute the API call against the endpoint.
  • Use Case: When a free or built-in tool isn’t available, locate a suitable paid service, verify requirements, and retrieve results programmatically.

Quick Start

Inspect a bazaar endpoint with awal x402 details <url> and then execute a paid request with awal x402 pay <url>.

Frequently Asked Questions about x402

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I discover and call paid APIs using USDC?

You can discover paid APIs by searching the bazaar to inspect endpoint prices, accepted payment schemes, and network details. The x402 protocol then enables automatic USDC settlement to execute authenticated, price-aware requests against supported endpoints.

What is the x402 protocol for API payments?

The x402 protocol is a mechanism for paid API calls that enforces discovery of price, accepted payment schemes, network, and input/output schemas. It supports automatic HTTP method detection to qualify endpoints before initiating USDC payment.

How do I check an API's payment requirements and schemas before paying?

You can inspect a bazaar endpoint to retrieve its specific payment requirements, including price, accepted payment schemes, network, and input/output schemas. This verification happens automatically before any USDC settlement is executed.

Can I automatically settle API payments with USDC without manual setup?

Yes, automatic USDC settlement is supported for paid API requests. The system handles price discovery and HTTP method detection to qualify endpoints, ensuring authenticated requests are executed programmatically without manual payment setup.

What should I do if my paid API request fails or I cannot find a suitable service?

Use this tool when a free or built-in alternative is unavailable to search the bazaar for paid services. It verifies endpoint requirements and input/output schemas before paying, preventing failed requests caused by mismatched API expectations.