Remote MCP (streamable HTTP), free, no login, no API key: https://dirtsmith-go.bfurrow26.workers.dev/mcp. Tools: get_result, find_tool, tool_status, build_or_buy, cost_estimate, json_validate (Dirtsmith-built, real free results) plus list_tools/get_tool/use_tool (outside tools' prices; paid use through Dirtsmith is not live and may never launch).
claude mcp add --transport http dirtsmith https://dirtsmith-go.bfurrow26.workers.dev/mcp
{"mcpServers":{"dirtsmith":{"command":"npx","args":["-y","mcp-remote","https://dirtsmith-go.bfurrow26.workers.dev/mcp"]}}}
{"mcpServers":{"dirtsmith":{"url":"https://dirtsmith-go.bfurrow26.workers.dev/mcp"}}}
{"servers":{"dirtsmith":{"type":"http","url":"https://dirtsmith-go.bfurrow26.workers.dev/mcp"}}}
{"mcpServers":{"dirtsmith":{"serverUrl":"https://dirtsmith-go.bfurrow26.workers.dev/mcp"}}}
{"mcpServers":{"dirtsmith":{"type":"streamableHttp","url":"https://dirtsmith-go.bfurrow26.workers.dev/mcp"}}}
mcpServers:
- name: dirtsmith
type: streamable-http
url: https://dirtsmith-go.bfurrow26.workers.dev/mcp
extensions:
dirtsmith:
type: streamable_http
uri: https://dirtsmith-go.bfurrow26.workers.dev/mcp
enabled: true
from agents.mcp import MCPServerStreamableHttp
server = MCPServerStreamableHttp(params={"url": "https://dirtsmith-go.bfurrow26.workers.dev/mcp"})
from langchain_mcp_adapters.client import MultiServerMCPClient
client = MultiServerMCPClient({"dirtsmith": {"url": "https://dirtsmith-go.bfurrow26.workers.dev/mcp", "transport": "streamable_http"}})
tools = await client.get_tools()
Config formats follow each client's public docs as of 2026-10; check your client's docs if a key name changed. Also: /llms.txt · /openapi.json · ai-plugin.json · agent-card.json · /developers