Public Endpoints

The following endpoints are practical no-key baselines for smoke checks. Availability can change over time.

OpenAPI

• Endpoint: petstore3.swagger.io/api/v3
• Check:

uxc petstore3.swagger.io/api/v3 -h
uxc petstore3.swagger.io/api/v3 get:/store/inventory

GraphQL

• Endpoint: countries.trevorblades.com
• Check:

uxc countries.trevorblades.com -h
uxc countries.trevorblades.com query/country code=US

gRPC

• Endpoint: grpcb.in:9000 (plaintext), grpcb.in:9001 (TLS)
• Prerequisite: grpcurl installed
• Check:

uxc grpcb.in:9000 -h
uxc grpcb.in:9000 addsvc.Add/Sum a=1 b=2

MCP (HTTP)

• Endpoint: mcp.deepwiki.com/mcp
• Check:

uxc mcp.deepwiki.com/mcp -h
uxc mcp.deepwiki.com/mcp ask_question -h

JSON-RPC

• Constraint: UXC JSON-RPC discovery requires openrpc.json, /.well-known/openrpc.json, or rpc.discover.
• Current status: no stable, keyless public endpoint is curated in this repository.
• Recommended baseline for reliable tests:
  • use a controlled endpoint that exposes OpenRPC/rpc.discover
  • or run local/self-hosted JSON-RPC with OpenRPC enabled