What tools does the keryx MCP server provide?

keryx exposes 2 tools: keryx_status, research. This list was returned by the running server when we connected to it.

Does keryx require an API key?

No. keryx answered a tools/list request without credentials.

Connection check verified live · 27h ago

keryx

Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.

Finance & crypto

Tools 2

GitHub stars —

Installs / wk —

Licence —

Transport streamable-http, stdio

Last checked 27h ago

Tools & capabilities

2 tools

Read from the running server on 27h ago.

keryx_status read-only

Describe this MCP surface, its payment behavior, and the active caller tier.

research modelbudgetquestion*

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.

Context cost

Light

Connecting this server adds 2 tool definitions to every request — roughly 180 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

shares research · 57 tools

research-hub verified live · 28h ago

shares research · 29 tools

weblens verified live · 27h ago

shares research · 36 tools

licita-app verified live · 27h ago

shares research · 11 tools

agent-failure-archive verified live · 27h ago

shares research · 9 tools

seaweb verified live · 26h ago

shares research · 43 tools

Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Repository: tang-vu/keryx
npm: keryx-mcp
Registry: io.github.tang-vu/keryx
Endpoint: https://keryx.cc/mcp
Sources: registry