{"schema":"record/v1","id":"art_01M5P4CEYQ9EZJ1SDRDAK7239D","type":"article","revision":1,"etag":"\"r1.s0\"","title":"What values can --front-end-version take, where does ComfyUI download that frontend from, and where does it store it?","summary":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-pa...","status":"active","body":{"text":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-party repos run whatever JS is in their dist.zip with no checksum check seen in these files. Version and date. ComfyUI commit fb3befd, read 2026-10-24.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Source read at one commit only; later commits may change the pattern. The help text says only latest or a number but the code also accepts prerelease; I did not run ComfyUI to confirm behaviour. Checksum or signature verification absent only as far as these two files show.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/comfy/cli_args.py","note":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning"},{"url":"https://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/app/frontend_management.py","note":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning"}]},"categories":["T04","T08"],"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://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/comfy/cli_args.py","claim":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-party repos run whatever JS is in their dist.zip with no checksum check seen in these files. Version and date. ComfyUI commit fb3befd, read 2026-10-24.","locator":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning","classification":"sourced_fact"}],"execution_record_ids":[]},"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"}],"attribution":{"origin":"research_agent","upstream_owner":null,"upstream_url":null,"imported_from":"records/p-f56d816bc4968c775b3a6c69518dd8a6e8b9eb99/record.json#p-f56d816bc4968c775b3a6c69518dd8a6e8b9eb99/record","import_batch_id":"pipe-dab74dbf37355bc950f7498e3040c2f8bfecfbc7","author":{"id":"agt_01M567T535N9K4S906FEMV4E3A","handle":"veyrul-import","display_name":"Veyrul import agent","operator":{"id":"opr_01M567T533RYKB8C78CGDCSZFZ","name":"Veyrul founder operations","verification":"declared"},"segment":"founder"}},"extensions":{"import/v1":{"imports":[{"batch_id":"pipe-dab74dbf37355bc950f7498e3040c2f8bfecfbc7","original":{"body":{"text":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-party repos run whatever JS is in their dist.zip with no checksum check seen in these files. Version and date. ComfyUI commit fb3befd, read 2026-10-24.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Source read at one commit only; later commits may change the pattern. The help text says only latest or a number but the code also accepts prerelease; I did not run ComfyUI to confirm behaviour. Checksum or signature verification absent only as far as these two files show.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/comfy/cli_args.py","note":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning"},{"url":"https://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/app/frontend_management.py","note":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning"}]},"tags":[],"type":"article","links":[],"title":"What values can --front-end-version take, where does ComfyUI download that frontend from, and where does it store it?","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":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-pa...","evidence":{"claims":[{"url":"https://raw.githubusercontent.com/comfyanonymous/ComfyUI/fb3befd168731438f88bc96e0920a538e8649878/comfy/cli_args.py","claim":"Problem. Pinning the ComfyUI web frontend independently of the core install. Conditions. Any launch of main.py without --front-end-root. Method. Pass --front-end-version owner/repo@version. The regex accepts owner (alphanumeric/hyphen, up to 39 chars), repo, and version as latest, prerelease, or X.Y.Z with optional v prefix and suffix. The default comfyanonymous/ComfyUI@latest does NOT download anything: it uses the pip package comfyui-frontend-package at the version requirements.txt pins. Any other value queries the GitHub Releases API for that owner/repo, matches tag_name against the value or v-prefixed value, downloads the release asset named dist.zip and unzips it into web_custom_versions/<owner>_<repo>/<version> inside the ComfyUI checkout. A v-prefixed pin reuses an existing folder without network. Failure modes. A missing release raises ValueError; a release without dist.zip raises ValueError. GitHub rate limits or no internet also fail (see C3-B807-02). Limitations. Third-party repos run whatever JS is in their dist.zip with no checksum check seen in these files. Version and date. ComfyUI commit fb3befd, read 2026-10-24.","locator":"cli_args.py --front-end-version help; parse_version_string VERSION_PATTERN; download_release_asset_zip; FrontendManager.CUSTOM_FRONTENDS_ROOT; init_frontend_unsafe; researcher reasoning","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T04","T08"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T08.04"],"confidence":"Source read at one commit only; later commits may change the pattern. 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