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Public Test Endpoints (No API Key)

These endpoints are useful for protocol availability checks without API keys.

Last verified in project docs on 2026-02-28.

OpenAPI

  • Endpoint: https://petstore3.swagger.io/api/v3
  • Quick checks:
uxc petstore3.swagger.io/api/v3 -h
curl -sS https://petstore3.swagger.io/api/v3/openapi.json | jq -r '.openapi, .info.title'

GraphQL

  • Endpoint: https://countries.trevorblades.com/
  • Quick checks:
uxc countries.trevorblades.com -h
curl -sS https://countries.trevorblades.com/ \
  -H 'content-type: application/json' \
  --data '{"query":"{ __schema { queryType { name } } }"}' \
  | jq -r '.data.__schema.queryType.name'

gRPC (Server Reflection)

  • Endpoint (plaintext): grpcb.in:9000
  • Endpoint (TLS): grpcb.in:9001
  • Quick checks:
uxc grpcb.in:9000 -h
grpcurl -plaintext grpcb.in:9000 list
grpcurl grpcb.in:9001 list

MCP (HTTP)

  • Endpoint: https://mcp.deepwiki.com/mcp
  • Quick checks:
uxc mcp.deepwiki.com/mcp -h
curl -sS https://mcp.deepwiki.com/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  --data '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"uxc-check","version":"0.1"}}}'

Note: DeepWiki MCP can return streamable HTTP/SSE payloads.

MCP (stdio, local no-key baseline)

  • Command: npx -y @modelcontextprotocol/server-filesystem /tmp
  • Quick checks:
uxc "npx -y @modelcontextprotocol/server-filesystem /tmp" -h
uxc "npx -y @modelcontextprotocol/server-filesystem /tmp" list_directory path=/tmp

JSON-RPC

  • Endpoint: https://fullnode.mainnet.sui.io
  • Quick checks:
uxc fullnode.mainnet.sui.io -h
uxc fullnode.mainnet.sui.io sui_getLatestCheckpointSequenceNumber

Notes

  • Public endpoints may change behavior, schemas, or rate limits over time.
  • For CI stability, prefer local mock/test servers where possible.