io.github.tang-vu/keryx
pkg:npm:keryx-mcp
Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.
- transport:
- remote + stdio
- credential class:
- self-provisionable
Owner verification
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- keryx_statusshallow
Describe this MCP surface, its payment behavior, and the active caller tier.
- researchshallow
Research a question under a USDC creator-payment budget. Keryx selects sources, pays access tolls and weighted citation rewards, then returns a grounded answer and receipt.
Embed this server’s score
Tool count and median score across every tool in this server’s corpus — honest in a way a single cherry-picked tool’s badge wouldn’t be.
[](https://vouch.tools/servers/5f7bb7b4-7df7-44b9-9e4b-232863cd03af)