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https://github.com/paperclipai/paperclip.git
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Devin FoleyandPaperclip
a7d3b17a97
Recognize Slack's exact disabled-app response and return actionable setup instructions from catalog and health routes. Bound response parsing and keep unknown upstream errors reportable without exposing provider settings links. Verified 361 focused tests, server typecheck, and authenticated discovery. The three route regressions fail before this change and pass afterward. Co-Authored-By: Paperclip <noreply@paperclip.ing>
47 lines
1.6 KiB
TypeScript
47 lines
1.6 KiB
TypeScript
const ACCESS_DISABLED_MESSAGE = "App is not enabled for Slack MCP server access.";
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const MAX_ERROR_BYTES = 8 * 1024;
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/** Recognize only Slack's documented-endpoint response for missing app setup.
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* Never return provider text or its embedded account/settings links to callers. */
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export async function isSlackMcpAccessDisabledResponse(
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endpoint: string,
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response: Response,
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): Promise<boolean> {
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const url = new URL(endpoint);
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if (url.origin !== "https://mcp.slack.com" || url.pathname !== "/mcp"
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|| response.status !== 400
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|| response.headers.get("content-type")?.split(";")[0]?.trim().toLowerCase() !== "application/json") return false;
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const reader = response.body?.getReader();
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if (!reader) return false;
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const chunks: Uint8Array[] = [];
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let bytes = 0;
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let timedOut = false;
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const timeout = setTimeout(() => {
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timedOut = true;
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void reader.cancel().catch(() => undefined);
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}, 2_000);
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timeout.unref();
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try {
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while (true) {
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const { done, value } = await reader.read();
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if (timedOut) return false;
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if (done) break;
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bytes += value.byteLength;
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if (bytes > MAX_ERROR_BYTES) return false;
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chunks.push(value);
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}
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const payload = JSON.parse(Buffer.concat(chunks).toString("utf8"));
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const error = payload?.error;
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return payload?.jsonrpc === "2.0" && error?.code === -32600
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&& typeof error.message === "string"
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&& (error.message === ACCESS_DISABLED_MESSAGE || error.message.startsWith(`${ACCESS_DISABLED_MESSAGE} `));
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} catch {
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return false;
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} finally {
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clearTimeout(timeout);
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await reader.cancel().catch(() => undefined);
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reader.releaseLock();
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}
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}
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