github/github-mcp-server · info

failed to marshal advisories: %w

Error message

failed to marshal advisories: %w

What it means

Returned if json.Marshal fails on the global advisories payload. The slice contains only JSON-safe go-github structs, so encoding cannot fail under normal operation; this is defensive dead code. An occurrence would indicate a version mismatch in the go-github types rather than a runtime condition.

Source

Thrown at pkg/github/security_advisories.go:204

			}

			advisories, resp, err := client.SecurityAdvisories.ListGlobalSecurityAdvisories(ctx, opts)
			if err != nil {
				return nil, nil, fmt.Errorf("failed to list global security advisories: %w", err)
			}
			defer func() { _ = resp.Body.Close() }()

			if resp.StatusCode != http.StatusOK {
				body, err := io.ReadAll(resp.Body)
				if err != nil {
					return nil, nil, fmt.Errorf("failed to read response body: %w", err)
				}
				return ghErrors.NewGitHubAPIStatusErrorResponse(ctx, "failed to list advisories", resp, body), nil, nil
			}

			r, err := json.Marshal(advisories)
			if err != nil {
				return nil, nil, fmt.Errorf("failed to marshal advisories: %w", err)
			}

			result := utils.NewToolResultText(string(r))
			// Global advisories come from the world-readable GitHub Advisory
			// Database (public) but contain externally authored prose
			// (untrusted).
			result = attachStaticIFCLabel(ctx, deps, result, ifc.LabelGlobalSecurityAdvisory())
			return result, nil, nil
		},
	)
}

func ListRepositorySecurityAdvisories(t translations.TranslationHelperFunc) inventory.ServerTool {
	return NewTool(
		ToolsetMetadataSecurityAdvisories,
		mcp.Tool{
			Name:        "list_repository_security_advisories",
			Description: t("TOOL_LIST_REPOSITORY_SECURITY_ADVISORIES_DESCRIPTION", "List repository security advisories for a GitHub repository."),

View on GitHub (pinned to 0ea1f775a7)

Solutions

1. No runtime action needed - report upstream if it ever fires

if err != nil && strings.Contains(err.Error(), "failed to marshal advisories") {
    // plain-data structs cannot fail to marshal: report upstream
    log.Error("impossible marshal failure on advisory list", "err", err)
}

When it happens

Trigger: No realistic API call produces this.

Common situations: Not observed in practice.

Related errors

• failed to marshal alert: %w
• failed to marshal alerts: %w
• GitHub App authentication and GITHUB_PERSONAL_ACCESS_TOKEN a
• GitHub App ID or client ID is required (GITHUB_APP_ID)
• repo is required

AI-assisted analysis of github/github-mcp-server@0ea1f775a7 (2026-08-15). Data as JSON: /api/errors/5528e77fde8641e7. Report an issue: GitHub.