Phos Labs MCP Server
Hosted, remote Model Context Protocol server. POST https://mcp.phoslabs.io/mcp is Streamable HTTP behind OAuth 2.1: the 401 challenge names RFC 9728 protected-resource metadata, whose authorization server (https://mcp.phoslabs.io/) publishes RFC 8414 metadata with authorization_code + refresh_token, PKCE S256, dynamic client registration and one scope, claudeai. The root path answers an anonymous initialize (protocolVersion 2025-03-26, serverInfo "Phos Labs Commerce Intelligence") and refuses every other method; /sse and /messages accept a REST API key as the Bearer token. Registered in the official MCP registry as io.phoslabs/commerce-intelligence (4.0.0) and io.phoslabs/behavioral-science (1.0.0). tools/list is gated, so the tool inventory is recorded from the agent card and REST listing without input schemas. The A2A agent card served on this host at /.well-known/agent-card.json (and agent.json) describes this server and grades flavored (no protocolVersion).