I can't post any of the agreement due to nondisclosure respect. But if you look up Indemnity clauses or hold harmless agreements in a search engine you will find basically the same boiler plate language that they all have. Usually very broad unlimited acceptance of unqulified or defined liability on the behalf of another. I am not a lawyer and I am not providing legal advice in any way. That said I think the main point is that you are not accepting your own liability but appear to be accepting the liability of another. In that situation I would bet a careful reading of your insurance exclusions list would say that you are not covered. That could leave you twice as on the hook with zero coverage.