Execute script / http api after every print

CappuccinoCake

Hey, is it possible to execute a script or query an http api after every print (to update spool usage in spoolman) automatically? Are there some references for the usage of variables or is there any premade script for this? Would be nice if someone has developed something and could give mit some code / hints. Thanks.

Repetier

See computed expressions in user manual. There is the option to use http get or post and you can add it in the after print script. In state.total_filament_used you could get the total length of the job. You also have ext_0.filament_printed and ext_1.filament_printed for per extruder values.

CappuccinoCake

I now looked into the api I would like to use, and there I have to use a put to achieve what I want. But with the commands I can only send a post. Is it somewhat possible to send a PUT request?

Repetier

Not directly with implemented methods. However you could make an external command running curl for example and send the request using curl which can handle PUT and DELETE as well. Just make sure you can send additional parameter so you can use the curl command with any parameter.

CappuccinoCake

Ok, then I am going with that way. Is there a possibility to use the variables like state.total_filament_used in the external command, how are the getting passed to the script? As args?

CappuccinoCake

and another question would be, can I get the return string from the command into repetier server?

Repetier

If you set external script to accept arguments you can send them any argument you want. Remember everything in {{ ... }} gets replaced before it is send as argument, that way you can use state variables or even build the query. You can not get return parameter however for @execute.

As a last resort you should know you can extend the backend also with lua scripts and call a own command that can do anything you want as this is a full command. Or have a small python mini server app that translates everything you need to how you need it.

With some programming skills or with ai help it is always possible to find a solution. The question is just which fits best your knowledge.

CappuccinoCake

When using state.total filament used I get an error error: error: unknown state field total_filament_used, what am I doing wrong?

Repetier

It is not in state, it is in job, e.g.
@echo {{job.total_filament_used}}

but note that job it self is only available as long as a job is running, so it will fail without a running job.
Better to use is IO think per extruder query like:
@echo {{ext_0.filament_printed}}
at the end. These get reset on print start so it is printed since last print start.

CappuccinoCake

Oh, ok. With ext0… it is working. In the first answer you had written state…

CappuccinoCake

Is it possible, that get_json_array_size is not working properly? I queried the spoolman api getting the spools and if I do use get_json_array_size for getting the num of available spools I get -1.

CappuccinoCake

CappuccinoCake I resolved this problem, it was a problem with json interpretation from api.

CappuccinoCake

And the next question would be how to access a specific index of the json array via json_get.

CappuccinoCake

CappuccinoCake this was connected to the problem above, also resolved now.

CappuccinoCake

But 1 problem seems unresolved now, when I am showing a dialog with dynamic dropdown created by a while loop from api contents, when it's executed via quick command, the list is complete, if executed by before any job, the list only shows the first entry. Is there some explanation about this behaviour?

CappuccinoCake

CappuccinoCake I now found out some additional info about this problem, ...maybe... It seems that there are logged errors in printer console: error: @while outside @func not allowed!, when I run the !same code! manually by quickcommand it is working without problems, but when I am doing it via before printjob, then it is logging the error above. Is there some difference between the 2 calls? Do I have to define the functions elsewhere?

Repetier

It should not make a difference, but while loops are difficult since there is no go back in gcode it uses a trick. So without seeing the exact script so I can test tocally I can not say much. Can you set api response in a variable (@set ...) and show the function not working in start print hook. Then I will test it locally and see why.

CappuccinoCake

Repetier

@func defineDefaultFilament str
  @set local.i 0
  @set global.default_filament ""
  @while {{ local.i < length(local.str) }}
    @if {{ substr(local.str, local.i, 1) == "@" }}
      @break
    @endif
    @set global.default_filament {{ global.default_filament + substr(local.str, local.i, 1) }}
    @set local.i {{ local.i + 1 }}
  @endwhile
@endfunc

@func showSpoolSelection
  @set local.res '{"code":200,"data":"[{\"id\":2,\"registered\":\"2025-11-11T13:41:42Z\",\"filament\":{\"id\":3,\"registered\":\"2025-11-11T13:41:26Z\",\"name\":\"amazon basics PLA | Neon Orange\",\"vendor\":{\"id\":2,\"registered\":\"2025-11-11T13:31:30Z\",\"name\":\"amazon basics\",\"empty_spool_weight\":228.0,\"external_id\":\"amazonbasics\",\"extra\":{}},\"material\":\"PLA\",\"price\":15.99,\"density\":1.24,\"diameter\":1.75,\"weight\":1000.0,\"spool_weight\":228.0,\"article_number\":\"B07T6VTG61\",\"comment\":\"todo\",\"settings_extruder_temp\":220,\"settings_bed_temp\":55,\"color_hex\":\"dd732c\",\"external_id\":\"amazonbasics_pla_neonorange\",\"extra\":{\"extr_multiplier\":\"1\"}},\"price\":15.99,\"remaining_weight\":1000.0,\"initial_weight\":1000.0,\"spool_weight\":232.0,\"used_weight\":0.0,\"remaining_length\":335283.6194167644,\"used_length\":0.0,\"archived\":false,\"extra\":{}},{\"id\":4,\"registered\":\"2025-11-15T14:22:47Z\",\"first_used\":\"2025-11-15T17:27:21Z\",\"last_used\":\"2025-11-16T07:51:48Z\",\"filament\":{\"id\":2,\"registered\":\"2025-11-11T13:34:01Z\",\"name\":\"amazon basics PLA | Hellgrau\",\"vendor\":{\"id\":2,\"registered\":\"2025-11-11T13:31:30Z\",\"name\":\"amazon basics\",\"empty_spool_weight\":228.0,\"external_id\":\"amazonbasics\",\"extra\":{}},\"material\":\"PLA\",\"price\":15.99,\"density\":1.24,\"diameter\":1.75,\"weight\":1000.0,\"spool_weight\":228.0,\"article_number\":\"B07T6VTG5Q\",\"settings_extruder_temp\":220,\"settings_bed_temp\":55,\"color_hex\":\"c4c7c1\",\"external_id\":\"amazonbasics_pla_hellgrau\",\"extra\":{\"extr_multiplier\":\"0.92\"}},\"price\":15.99,\"remaining_weight\":818.6704115127327,\"initial_weight\":1000.0,\"spool_weight\":232.0,\"used_weight\":181.32958848726724,\"remaining_length\":274486.778681401,\"used_length\":60796.8407353634,\"archived\":false,\"extra\":{}},{\"id\":5,\"registered\":\"2025-11-15T22:08:59Z\",\"filament\":{\"id\":2,\"registered\":\"2025-11-11T13:34:01Z\",\"name\":\"amazon basics PLA | Hellgrau\",\"vendor\":{\"id\":2,\"registered\":\"2025-11-11T13:31:30Z\",\"name\":\"amazon basics\",\"empty_spool_weight\":228.0,\"external_id\":\"amazonbasics\",\"extra\":{}},\"material\":\"PLA\",\"price\":15.99,\"density\":1.24,\"diameter\":1.75,\"weight\":1000.0,\"spool_weight\":228.0,\"article_number\":\"B07T6VTG5Q\",\"settings_extruder_temp\":220,\"settings_bed_temp\":55,\"color_hex\":\"c4c7c1\",\"external_id\":\"amazonbasics_pla_hellgrau\",\"extra\":{\"extr_multiplier\":\"0.92\"}},\"price\":15.99,\"remaining_weight\":1000.0,\"initial_weight\":1000.0,\"spool_weight\":228.0,\"used_weight\":0.0,\"remaining_length\":335283.6194167644,\"used_length\":0.0,\"archived\":false,\"extra\":{}},{\"id\":6,\"registered\":\"2025-11-15T22:09:19Z\",\"filament\":{\"id\":18,\"registered\":\"2025-11-15T21:49:43Z\",\"name\":\"amazon basics PLA | Weiß\",\"vendor\":{\"id\":2,\"registered\":\"2025-11-11T13:31:30Z\",\"name\":\"amazon basics\",\"empty_spool_weight\":228.0,\"external_id\":\"amazonbasics\",\"extra\":{}},\"material\":\"PLA\",\"price\":15.99,\"density\":1.24,\"diameter\":1.75,\"weight\":1000.0,\"spool_weight\":228.0,\"article_number\":\"B07S2ZXM97\",\"comment\":\"todo\",\"settings_extruder_temp\":220,\"settings_bed_temp\":55,\"color_hex\":\"ffffff\",\"extra\":{\"extr_multiplier\":\"1\"}},\"price\":15.99,\"remaining_weight\":1000.0,\"initial_weight\":1000.0,\"spool_weight\":228.0,\"used_weight\":0.0,\"remaining_length\":335283.6194167644,\"used_length\":0.0,\"archived\":false,\"extra\":{}}]"}'
  @if {{ get_json(local.res, "/code") == "200" }}
    @set local.spools {{ "{\"spools\":" + get_json(local.res, "/data") + "}" }}
    @echo {{ local.spools }}
  
    @set local.i 0
    @set local.end {{ get_json_array_size(local.spools, "/spools") -1 }}
    @echo {{ "end: " + local.end }}
    @set local.default_id {{ get_json(local.spools, "/spools/0/id") }}
    @set local.options "("
    @while {{ local.i <= local.end }}
      @if {{ local.i != local.end }}
        @set local.options {{ local.options + "\"" + get_json(local.spools, "/spools/" + local.i + "/id") + " - " + get_json(local.spools, "/spools/" + local.i + "/filament/name") + "\":\"" + get_json(local.spools, "/spools/" + local.i + "/id") + "\"," }}
        @if {{ get_json(local.spools, "/spools/" + local.i + "/filament/external_id") == global.default_filament }}
          @set local.default_id {{ get_json(local.spools, "/spools/" + local.i + "/id") }}
        @endif
      @else
        @set local.options {{ local.options + "\"" + get_json(local.spools, "/spools/" + local.i + "/id") + " - " + get_json(local.spools, "/spools/" + local.i + "/filament/name") + "\":\"" + get_json(local.spools, "/spools/" + local.i + "/id") + "\"" }}
        @if {{ get_json(local.spools, "/spools/" + local.i + "/filament/external_id") == global.default_filament }}
          @set local.default_id {{ get_json(local.spools, "/spools/" + local.i + "/id") }}
        @endif
      @endif
      @set local.i {{ local.i + 1 }}
    @endwhile
    @set local.options {{ local.options + ")" }}
    @echo {{ "options: " + local.options }}

    @dialogStart "Bitte wähle die zu verwendende Filamentrolle aus" "spoolman - filament"
      @dialogBlocking
      @dialogInputDropdown "spoolman" perm.spool {{ local.options }} default({{ local.default_id }})
      @dialogShow
  @else
    @warning "api not working, please correct manually, try to find error handling"
  @endif
@endfunc

@listFunctions

@call defineDefaultFilament {{ job.name }}
;; @echo {{ global.default_filament }}

@call showSpoolSelection
;; @echo {{ perm.spool }}

This is the script I am executing before printjob, there I get the error, that the while lopp is not allowed outside of a function, but how you can see, the while loop is in functions. Thanks.

CappuccinoCake

and the next problem is, that the command callAndSave is not usable, as there I get always the error function not found. I only replace @call with @callWithSave.

Repetier

Ok, I see the issue and it is quite simple when you know it. Due to how functions get compiled, it is not possible to define them inside a print job and start/end gcode are added to printjob so there it is also not allowed to define function.

Solution is to split your code. Put the function e.g. in run on printer activation and leave the calls where they are. Then it will work once you deactivate and activate the printer. I will see if I can add an error message for this case with a hint so it is directly clear.