# Phos Labs MCP Server

**Canonical:** https://apis.io/apis/phoslabs-io/phos-labs-mcp-server/  
**Provider:** Phos Labs — https://apis.io/providers/phoslabs-io/  
**Base URL:** https://mcp.phoslabs.io/mcp  
**Documentation:** https://github.com/phoslabs/behavioral-science-api#mcp-integration

Phos Labs MCP Server is one of 2 APIs that [Phos Labs](https://apis.io/providers/phoslabs-io/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include MCP, AI Agents, and A2A. The published artifact set on APIs.io includes authentication docs, API documentation, and pricing.

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).

## Machine-readable artifacts (8)

- **MCPServer** — https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/mcp/phoslabs-io-mcp.yml
- **ToolCrosswalk** — https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/mcp/phoslabs-io-tool-crosswalk.yml
- **AgentCard** — https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/a2a/phoslabs-io-a2a.yml
- **AgentCard** — https://mcp.phoslabs.io/.well-known/agent-card.json
- **OAuthScopes** — https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/scopes/phoslabs-io-scopes.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/phoslabs-io/refs/heads/main/authentication/phoslabs-io-authentication.yml
- **Documentation** — https://github.com/phoslabs/behavioral-science-api#mcp-integration
- **Pricing** — https://phoslabs.io/credits

## Other Phos Labs APIs (1)

- [Behavioral Science API](https://apis.io/apis/phoslabs-io/behavioral-science-api/)

## Tags

MCP, AI Agents, A2A

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/phoslabs-io/phos-labs-mcp-server/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/phoslabs-io/.