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2026-07-13 12:58:18 +08:00

42 lines
1.3 KiB
TypeScript

/**
* Server-side default MCP servers when no x-mcp-servers header is present.
* Unset = no defaults. Set DEFAULT_MCP_SERVERS (JSON array) to pre-fill.
*/
export type McpServerConfig = {
type: "http" | "sse";
url: string;
serverId?: string;
};
/** Built-in default: Excalidraw MCP server (public, no auth). Override with DEFAULT_MCP_SERVERS env. */
const BUILTIN_DEFAULTS: McpServerConfig[] = [
{ type: "http", url: "https://mcp.excalidraw.com", serverId: "excalidraw" },
];
function parseDefaultMcpServers(): McpServerConfig[] {
const raw = process.env.DEFAULT_MCP_SERVERS;
if (raw == null || raw === "") return BUILTIN_DEFAULTS;
try {
const parsed = JSON.parse(raw) as McpServerConfig[];
if (!Array.isArray(parsed)) return BUILTIN_DEFAULTS;
const filtered = parsed.filter(
(s): s is McpServerConfig =>
s != null &&
typeof s.url === "string" &&
(s.type === "http" || s.type === "sse"),
);
return filtered.length > 0 ? filtered : BUILTIN_DEFAULTS;
} catch {
return BUILTIN_DEFAULTS;
}
}
let cached: McpServerConfig[] | null = null;
/** Default MCP server configs for API routes when header is absent. */
export function getDefaultMcpServers(): McpServerConfig[] {
if (cached === null) cached = parseDefaultMcpServers();
return cached;
}