x402-discovery
Rank #62,188glama/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.
What you can do with x402-discovery
x402-discovery is a Model Context Protocol (MCP) server published by rplryan. It ranks #62,188 of 167,945 active servers 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.
Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.
What x402-discovery can and cannot do
Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.
What you need before using x402-discovery
The registry listing declares required configuration before first use — typically an API key, token or connection string set via environment variables.
Declared by Glama, last synced Nov 3, 2026. Not independently verified by MCP Toplist.
No runtime, credential or payment requirements are recorded for this server beyond the declaration above.
Connect x402-discovery and confirm it works
Install configuration unavailable. No registry publishes a machine-readable install config for this server — follow the repository README.
After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.
When to choose another server
No task-specific alternatives are catalogued for x402-discoveryyet; the list above is its publisher's other servers.
What changed, and when this was checked
- First listed
- Feb 26, 2026
- Latest release tag
- Feb 27, 2026
- Version history
- 2 release tags tracked (below)
- Requirements evidence
- Declared by Glama, last synced Nov 3, 2026. Not independently verified by MCP Toplist.
- Profile checked
- Not yet — purpose, capabilities and requirements above come from registry data only
- Ranking data as of
- Nov 3, 2026
- Glama ↗listed since Apr 26, 2026 · still listed
Do you maintain x402-discovery? to correct or enrich this profile.
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 |
Ranks ahead of 105,757 of 167,945 servers on MCP Toplist.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](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 167,945" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
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.
Do you run this server?
Community projects list the MCP servers behind real agents and apps. Publish yours and this page will link to it.