Kong/insomnia · error

MCP Connection aborted

Error message

MCP Connection aborted

What it means

Error "MCP Connection aborted" thrown in Kong/insomnia.

Source

Thrown at packages/insomnia/src/main/mcp/oauth-client-provider.ts:171

      tokenPrefix: tokens.token_type,
    });
  }
  // add state parameter to authorization url if present in authentication
  async state() {
    if ('state' in this.authentication && this.authentication.state) {
      return this.authentication.state;
    }
    return '';
  }
  saveResourceMetadataUrl(url: URL | undefined) {
    this._resourceMetadataUrl = url;
  }
  get resourceMetadataUrl() {
    return this._resourceMetadataUrl;
  }
  async redirectToAuthorization(authorizationUrl: URL) {
    if (this.context.abortController.signal.aborted) {
      throw new Error('MCP Connection aborted');
    }
    const { relayUrl, decryptOAuthResult } = encryptOAuthUrl(authorizationUrl.toString());
    BrowserWindow.getAllWindows().forEach(window => {
      window.webContents.send('show-oauth-authorization-modal', relayUrl);
    });
    const shouldOpenDefaultBrowser =
      'grantType' in this.authentication && this.authentication.grantType === 'mcp_auth_flow'
        ? !this.authentication.launchBrowserManually
        : true;
    const redirectedResult = await authorizeUserInDefaultBrowser({
      url: relayUrl,
      openDefaultBrowser: shouldOpenDefaultBrowser,
    });
    const redirectedTo = decryptOAuthResult(redirectedResult);
    const redirectParams = Object.fromEntries(new URL(redirectedTo).searchParams);
    const { code: authorizationCode, error, error_description, error_uri } = redirectParams;
    if (error) {
      throw new Error(JSON.stringify({ error, error_description, error_uri }));

View on GitHub (pinned to d9bb2b0142)

When it happens

Trigger: Thrown at packages/insomnia/src/main/mcp/oauth-client-provider.ts:171 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Connection failures: ECONNREFUSED, ECONNRESET, and friends — why connections get refused, reset, or dropped.

AI-assisted analysis of Kong/insomnia@d9bb2b0142 (2026-08-26). Data as JSON: /api/errors/64c8c3939505a859. Report an issue: GitHub.