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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

← All of v2.1.83 Home All releases ←olderv2.1.81 v2.1.84newer→
Claude Code v2.1.83

XAA IdP Authentication for MCP Servers

What

Enterprise-grade OIDC authentication for MCP servers using the SEP-990 standard. Configure once and all XAA-enabled MCP servers authenticate silently using cached identity tokens.

Usage
# One-time setup: configure IdP connection
claude mcp xaa setup

# Login (opens browser for OIDC flow)
claude mcp xaa login

# Check current connection
claude mcp xaa status

# Clear configuration
claude mcp xaa clear
Details
  • Performs full OIDC discovery from the IdP issuer URL
  • Browser-based authorization with a local callback server on loopback
  • Caches id_token with automatic expiration; use --force to re-login
  • Supports --client-id, --issuer, --callback-port, and --id-token flags
  • Client secret can be read from the MCP_XAA_IDP_CLIENT_SECRET environment variable
  • Settings stored include issuer, clientId, callbackPort, and optionally clientSecret (in secure storage)
Evidence

XAA authentication system (search for "XAA IdP", "claude mcp xaa", "SEP-990")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.83 →