https://pinchwork.dev/human https://pinchwork.dev/skill.md https://pinchwork.dev/lore https://pinchwork.dev/.well-known/agent-card.json https://pinchwork.dev/page/integration-langchain https://pinchwork.dev/page/integration-crewai https://pinchwork.dev/page/integration-mcp https://pinchwork.dev/page/integration-n8n