{"schema":"record/v1","id":"art_01M5MB5MMEGZVR1J8TG3H69E95","type":"article","revision":1,"etag":"\"r1.s0\"","title":"I have an API-format workflow JSON and a local ComfyUI server: what is the smallest correct submit, wait and fetch-output sequence, and what do I keep from each step?","summary":"Per the project's own example scripts and the server code at the pin, a headless run is three HTTP steps: POST /prompt with an API-format graph (optionally a caller-chosen canonical-UUID prompt_id and a client_id), wait, then read GET /history/{prompt_id} and download each listed file through GET /view with filename, subfolder and type. The server keeps the prompt_id; keep it, because history is the only place that maps a run to its output file names. The shortest official example discards the response and so cannot be used to learn the outcome.","status":"active","body":{"text":"Per the project's own example scripts and the server code at the pin, a headless run is three HTTP steps: POST /prompt with an API-format graph (optionally a caller-chosen canonical-UUID prompt_id and a client_id), wait, then read GET /history/{prompt_id} and download each listed file through GET /view with filename, subfolder and type. The server keeps the prompt_id; keep it, because history is the only place that maps a run to its output file names. The shortest official example discards the response and so cannot be used to learn the outcome.\n\nCurator qualifications: Verified the submit path and response shape. History maps the run to its outputs; bytes come from /view. The number-vs-position conflict is carried from T5-02 and re-observed at this pin.\n\nEvidence status: curator/producer inference or synthesis from the cited sources (code read, not executed, where code is cited); correlated desk review (Claude); not independently reviewed.","citations":[{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/script_examples/websockets_api_example.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/script_examples/basic_api_example.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/server.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/comfy_execution/jobs.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/execution.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/docs/blob/506a4a94db30524adb8706667aec050d71dbdf60/development/comfyui-server/comms_routes.mdx","note":"post_prompt L1163-L1243; whole file"}]},"categories":["T08","T09"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/script_examples/websockets_api_example.py","claim":"Per the project's own example scripts and the server code at the pin, a headless run is three HTTP steps: POST /prompt with an API-format graph (optionally a caller-chosen canonical-UUID prompt_id and a client_id), wait, then read GET /history/{prompt_id} and download each listed file through GET /view with filename, subfolder and type. 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The number-vs-position conflict is carried from T5-02 and re-observed at this pin.\n\nEvidence status: curator/producer inference or synthesis from the cited sources (code read, not executed, where code is cited); correlated desk review (Claude); not independently reviewed.","citations":[{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/script_examples/websockets_api_example.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/script_examples/basic_api_example.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/server.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/comfy_execution/jobs.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/ComfyUI/blob/1a82e6d01f395b43275c77acd289af1eb7090bb9/execution.py","note":"post_prompt L1163-L1243; whole file"},{"url":"https://github.com/Comfy-Org/docs/blob/506a4a94db30524adb8706667aec050d71dbdf60/development/comfyui-server/comms_routes.mdx","note":"post_prompt L1163-L1243; whole file"}]},"tags":[],"type":"article","links":[],"title":"I have an API-format workflow JSON and a local ComfyUI server: what is the smallest correct submit, wait and fetch-output sequence, and what do I keep from each step?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Per the project's own example scripts and the server code at the pin, a headless run is three HTTP steps: POST /prompt with an API-format graph (optionally a caller-chosen canonical-UUID prompt_id and a client_id), wait, then read GET /history/{prompt_id} and download each listed file through GET /view with filename, subfolder and type. 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