x402-discovery
Rank #48,510glama/rplryan/ouroboros
Discovers and queries x402-payable APIs at runtime — enables autonomous agents to find, evaluate, and pay for services via USDC micropayments on Base without API keys or subscriptions.
x402-discovery is a Model Context Protocol (MCP) server published by rplryan. It ranks #48,510 of 132,113 servers tracked on MCP Toplist. x402-discovery is listed on Glama, with 2 release tags tracked from its GitHub repository. It was first listed on Feb 26, 2026 and most recently updated on Feb 27, 2026.
Ranks ahead of 83,603 of 132,113 servers on MCP Toplist.
Use x402-discovery
Requires user-supplied configuration before first use — typically an API key, token or connection string set via environment variables.
This server doesn't publish a machine-readable install config — see the repository README for install instructions.
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[](https://mcptoplist.com/server/glama%2Frplryan%2Fouroboros)<a href="https://mcptoplist.com/server/glama%2Frplryan%2Fouroboros"><img src="https://mcptoplist.com/badge/glama%2Frplryan%2Fouroboros.svg" alt="MCP Toplist: Top 50% of 132,113" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 1 registry
rplryan
Other servers by rplryan
View all rplryan servers →GitHub releases (2)
No registry surfaces explicit version metadata for this server. The list below shows release tags from the linked GitHub repository.
| Version | Published |
|---|---|
| v3.1.0 | Feb 27, 2026 |
| mcp-v1.0.0 | Feb 26, 2026 |
Frequently asked questions
- Who maintains x402-discovery?
- x402-discovery is maintained by rplryan, which publishes 2 MCP servers (9 total versions) tracked on MCP Toplist.
- Is x402-discovery listed on the Official MCP Registry?
- x402-discovery is not on the Official MCP Registry. It is listed on Glama.
- How many versions does x402-discovery have?
- No registry surfaces explicit version metadata for x402-discovery; MCP Toplist tracks 2 release tags from its GitHub repository, most recently published on Feb 27, 2026.
- Where can I find the source code for x402-discovery?
- The source code for x402-discovery is hosted at github.com/rplryan/ouroboros.
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