# x402 Service Discovery

> Use this tool when you need to dynamically discover and access x402-payable APIs at runtime, enabling autonomous agents to find and pay for services via USDC micropayments without requiring API keys or subscriptions. It solves problems of service discovery, evaluation, and payment for AI agents interacting with x402-compatible APIs. The tool takes no prior API knowledge as input and outputs a list of discoverable services with payment options.

Canonical page: https://skillsregistry.net/skills/rplryan-x402-discovery  
JSON: https://api.skillsregistry.net/v1/skills/rplryan-x402-discovery

## Description

Discovers x402-payable APIs at runtime. Enables autonomous agents to find, evaluate, and pay for services via USDC micropayments on Base — no API keys or subscriptions required.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-05-13

## Source

- **Source listing:** [Smithery](https://smithery.ai/server/rplryan/x402-discovery)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "rplryan-x402-discovery"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/rplryan-x402-discovery` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/rplryan-x402-discovery/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt