cubepi.mcp

load_mcp_tools_http

function

load_mcp_tools_http(server_url: str, *, headers: dict[str, str] | None = None, timeout: float = 30.0, transport: Transport = 'sse') -> MCPDiscoveryResult

Connect to an HTTP MCP server and discover its tools + metadata.

Returns a MCPDiscoveryResult carrying:

• tools — executable AgentTool per tools/list entry.
• server — MCPServerInfo (name, version, websiteUrl, icons) captured from the initialize handshake's serverInfo. Sourced from MCP spec rev 2025-11-25's Implementation shape.
• tool_infos — per-tool display metadata (currently icons) captured from each tools/list entry, separated from AgentTool so callers can render visuals without coupling core types to display concerns.

transport picks the wire format:

• "sse" (default) — legacy SSE-over-GET transport (sse_client).
• "streamable_http" — newer SSE-over-POST transport (streamablehttp_client).

Each returned tool's execute method invokes tools/call against a fresh session — v1 simplicity, no pooling. The session is opened over the same transport that was used for discovery, so the call path cannot accidentally regress to the wrong wire format.

The transport's own timeout bounds the connection; we additionally wrap initialize/list/call awaits in asyncio.wait_for so a server that accepts the connection but stalls on protocol messages still aborts.

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load_mcp_tools_stdio

function

load_mcp_tools_stdio(command: str, args: list[str], *, env: dict[str, str] | None = None, cwd: str | None = None, timeout: float = 30.0) -> MCPDiscoveryResult

Spawn a stdio MCP server subprocess and discover its tools + metadata.

Returns a MCPDiscoveryResult with the same shape as load_mcp_tools_http: tools (executable AgentTools), server (Implementation info from initialize), and tool_infos (per-tool display metadata such as icons).

Each returned tool's execute opens a fresh subprocess per call (v1 simplicity, no process pooling).

Args

• command — executable to run (e.g. "npx" or sys.executable)
• args — argv for the server process
• env — environment variables (passed to subprocess)
• cwd — working directory for the subprocess
• timeout — per-call wall-clock timeout for initialize/list/call awaits. A hung server raises asyncio.TimeoutError instead of blocking forever.

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MCPDiscoveryResult

class

MCPDiscoveryResult(self, tools: list[AgentTool], server: MCPServerInfo | None = None, tool_infos: list[MCPToolInfo] = list())

Outcome of an MCP discovery handshake.

tools is the executable surface (one AgentTool per tool the server exposes). server and tool_infos are display metadata captured from the same handshake; both follow MCP spec rev 2025-11-25.

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Attributes

• tools: list[AgentTool]
• server: MCPServerInfo | None
• tool_infos: list[MCPToolInfo]

MCPIcon

class

MCPIcon(self, src: str, mime_type: str | None = None, sizes: tuple[str, ...] | None = None, theme: str | None = None)

One icon entry from an MCP Icon block.

Mirrors mcp.types.Icon with snake_case fields. src is either an HTTP/HTTPS URL or a data: URI; sizes is a tuple of strings such as ("48x48", "96x96"). theme is "light" or "dark" when the server supplies separate variants — the spec lets clients pick the variant matching the current UI theme and fall back to the first entry otherwise.

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Attributes

• src: str
• mime_type: str | None
• sizes: tuple[str, ...] | None
• theme: str | None

MCPServerInfo

class

MCPServerInfo(self, name: str, version: str, website_url: str | None = None, icons: tuple[MCPIcon, ...] = ())

Server-level metadata captured from the initialize handshake.

Sourced from InitializeResult.serverInfo (an Implementation): the server's display name + version, an optional website URL, and an optional list of icons that clients can render as the server's logo.

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Attributes

• name: str
• version: str
• website_url: str | None
• icons: tuple[MCPIcon, ...]

MCPToolInfo

class

MCPToolInfo(self, name: str, icons: tuple[MCPIcon, ...] = ())

Per-tool display metadata captured from tools/list.

Carries Tool.icons separately from the executable AgentTool so consumers can render tool-specific icons without coupling cubepi's core AgentTool type to MCP display concerns.

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Attributes

• name: str
• icons: tuple[MCPIcon, ...]