B0_std_spawn_client (webs.B0_std_spawn

val make : 
  ?search:B0_std.Cmd.tool_search ->
  ?cmd:B0_std.Cmd.t ->
  ?insecure:bool ->
  unit ->
  (Webs.Http_client.t, string) Stdlib.result

make ~search ~cmd () looks for cmd (defaults to Cmd.tool "curl") in search (defaults to Os.Cmd.get ~search).