Find MCP servers in the directory.
Searches the standalone MCP directory (PulseMCP / official MCP registry
import) unioned with x402 services that also expose an MCP endpoint.
Returns normalised entries with a ready-to-use streamable-http
`call_hint.mcp.url`.
Args:
intent: Natural-language description of the tool/capability needed.
top_k: Max servers to return (1-20).
chain: Optional payment-network filter for paid MCP servers.
require_healthy: When true, only return servers marked health=ok.
Connector