README

Layer 6 — Interfaces

Model Context Protocol (MCP) endpoint for Waaseyaa applications.

Exposes Waaseyaa's #[AsAgentTool]-registered tools to external MCP clients (Claude Code, Cursor, Claude Desktop, custom AI agents) over Streamable HTTP at /mcp. Authenticates requests via McpAuthInterface, then dispatches JSON-RPC payloads against a per-request AgentToolRegistryBridge constructed with the auth-resolved AccountInterface. Per-tool capability gating runs at the AbstractAgentTool::requireCapability boundary against the account's permissions.

Quick reference

• Endpoint: POST /mcp (JSON-RPC; methods: initialize, ping, tools/list, tools/call).
• Server card: GET /.well-known/mcp.json (MCP discovery).
• Authentication: Authorization: Bearer <token> validated by McpAuthInterface::authenticate(). Default binding: BearerTokenAuth(tokens: []) (empty-token map). Production applications override by re-binding McpAuthInterface on the kernel-services bus or in an application provider.
• Tool surface: every class carrying #[AsAgentTool] and implementing AgentToolInterface becomes a callable MCP tool with no per-tool MCP code.

Bimaaji tool family

The first first-party tool family surfaced through this package is Bimaaji, exposed via five #[AsAgentTool] adapters in packages/ai-agent/src/Tool/Bimaaji/:

Capability model. bimaaji.read is intended to be broadly granted to authenticated MCP clients; bimaaji.mutate is opt-in per role/account. The framework does not grant either by default — the integrating application's permission stack does.

Example claude_desktop_config.json fragment (replace <token> with the bearer token your McpAuthInterface implementation expects):

{
  "mcpServers": {
    "waaseyaa": {
      "url": "https://your-host.example/mcp",
      "headers": {
        "Authorization": "Bearer <token>"
      }
    }
  }
}

Key classes

• McpEndpoint — JSON-RPC dispatcher; constructs the per-request bridge with the auth-resolved account.
• McpServerCard — server-card route controller (/.well-known/mcp.json).
• McpRouteProvider — registers both routes through the package's McpServiceProvider.
• McpServiceProvider — binds the McpAuthInterface default (BearerTokenAuth(tokens: [])); production overrides via re-binding.
• Bridge\AgentToolRegistryBridge — adapts Waaseyaa\AI\Tools\ToolRegistryInterface to the MCP ToolRegistryInterface + ToolExecutorInterface contracts; constructed per-request by McpEndpoint::dispatch().

Canonical spec

See docs/specs/mcp-endpoint.md for the authoritative architecture documentation including the per-request bridge architecture, the Bimaaji MCP bridge section (shipped tool inventory, capability model, M-G → M3 transition rationale), and the post-WP01..WP03 file reference.

Legacy surface

The pre-M3 McpController + Tools/* + Cache/ + Rpc/* files remain in-place from the original entity/discovery/traversal/ editorial tool-class architecture, still test-covered via direct instantiation in tests/Integration/Phase14/AiMcpIntegrationTest.php. They are no longer reachable from HTTP routing (the foundation McpRouter was retired in M3 WP01). A future cleanup mission may delete them.