keryx
Autonomous research agent that pays every source it cites in USDC on Arc via x402 micropayments.
Should I use this
Quality & Safety
B
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~265Tokens (tool definitions)
~830 BTypical response size
Minimal attention impact (0.21% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"keryx": {
"command": "npx",
"args": [
"keryx-mcp"
]
}
}
}Runnable packages
npmkeryx-mcp
0.1.1stdioRemote endpoints
https://keryx.cc/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
⚪research(question, budget, model)
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.
Input Schema
{
"type": "object",
"properties": {
"question": {
"type": "string",
"minLength": 3,
"maxLength": 4000,
"description": "Research question."
},
"budget": {
"type": "number",
"exclusiveMinimum": 0,
"description": "Maximum creator-payment budget in USDC; clamped to the caller's tier."
},
"model": {
"type": "string",
"description": "Optional Keryx model catalog id, for example deepseek-chat."
}
},
"required": [
"question"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}🟢keryx_status
Describe this MCP surface, its payment behavior, and the active caller tier.
Input Schema
{
"type": "object",
"properties": {},
"$schema": "http://json-schema.org/draft-07/schema#"
}Community
Evidence
Recent observations
verifiedversion not recorded2 tools
verifiedversion not recorded2 tools