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fix(mcp): retain RagMcpAgent stub to satisfy migration history (patch) #112

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Merged
liplus-lin-lay merged 1 commit into from
Apr 23, 2026
Merged

fix(mcp): retain RagMcpAgent stub to satisfy migration history (patch) #112

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3 changes: 3 additions & 0 deletions src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,9 @@ import { RagMcpAgentV2 } from "./mcp.js";
// Durable Object: issue/PR state store (SQLite-backed)
export { IssueStore } from "./store.js";

// Durable Object: MCP server — legacy stub (retained for migration compatibility only).
export { RagMcpAgent } from "./mcp.js";

// Durable Object: MCP server (tools: search_issues, get_issue_context, list_recent_activity)
export { RagMcpAgentV2 } from "./mcp.js";

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15 changes: 15 additions & 0 deletions src/mcp.ts
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Expand Up @@ -12,6 +12,7 @@
* idFromName("user-{githubUserId}").
*/

import { DurableObject } from "cloudflare:workers";
import { McpAgent } from "agents/mcp";
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
Expand Down Expand Up @@ -65,6 +66,20 @@ function githubHeaders(token: string): Record<string, string> {
*/
const INCLUDE_CONTENT_MAX_DOCS = 5;

/**
* Legacy class retained solely to satisfy Cloudflare's "class must exist in
* script for classes declared in past migrations (v1 new_sqlite_classes)"
* constraint. MCP_OBJECT binding points to RagMcpAgentV2 now, so this class
* never receives live traffic. It exists only so `wrangler deploy` does not
* fail with "script does not export class 'RagMcpAgent'". A follow-up PR can
* delete this class together with a deleted_classes migration.
*/
export class RagMcpAgent extends DurableObject<Env> {
async fetch(): Promise<Response> {
return new Response("RagMcpAgent has been retired; use RagMcpAgentV2", { status: 410 });
}
}

export class RagMcpAgentV2 extends McpAgent<Env, unknown, McpProps> {
// @ts-expect-error -- McpServer version mismatch between top-level SDK and agents' bundled copy (same issue as webhook-mcp; wrangler resolves at bundle time)
server = new McpServer({
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