René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"bug: `/api/v1` returns 404 on feast UI","articleBody":"## Expected Behavior \n\nRunning `feast ui` and navigating to \u003chttp://0.0.0.0:8888\u003e should load data from the feature store successfully.\n\nIn particular, this works on `0.63.0`\n\n```sh\n❯ uvx 'feast[mysql,gcp]==0.63' ui\nInstalled 96 packages in 266ms\n/Users/jacobbush/.cache/uv/archive-v0/H_s47SDJvNttrTnFOEpMY/lib/python3.13/site-packages/feast/ui_server.py:45: DeprecationWarning: \n        on_event is deprecated, use lifespan event handlers instead.\n\n        Read more about it in the\n        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).\n        \n  @app.on_event(\"shutdown\")\n/Users/jacobbush/.cache/uv/archive-v0/H_s47SDJvNttrTnFOEpMY/lib/python3.13/site-packages/fastapi/applications.py:4598: DeprecationWarning: \n        on_event is deprecated, use lifespan event handlers instead.\n\n        Read more about it in the\n        [FastAPI docs for Lifespan Events](https://fastapi.tiangolo.com/advanced/events/).\n        \n  return self.router.on_event(event_type)  # ty: ignore[deprecated]\n/Users/jacobbush/.cache/uv/archive-v0/H_s47SDJvNttrTnFOEpMY/lib/python3.13/site-packages/websockets/legacy/__init__.py:6: DeprecationWarning: websockets.legacy is deprecated; see https://websockets.readthedocs.io/en/stable/howto/upgrade.html for upgrade instructions\n  warnings.warn(  # deprecated in 14.0 - 2024-11-09\n/Users/jacobbush/.cache/uv/archive-v0/H_s47SDJvNttrTnFOEpMY/lib/python3.13/site-packages/uvicorn/protocols/websockets/websockets_impl.py:17: DeprecationWarning: websockets.server.WebSocketServerProtocol is deprecated\n  from websockets.server import WebSocketServerProtocol\nINFO:     Started server process [53505]\nINFO:     Waiting for application startup.\nINFO:     Application startup complete.\nINFO:     Uvicorn running on http://0.0.0.0:8888 (Press CTRL+C to quit)\nINFO:     127.0.0.1:57256 - \"GET /projects-list.json HTTP/1.1\" 200 OK\nINFO:     127.0.0.1:57256 - \"GET /registry HTTP/1.1\" 200 OK\nINFO:     127.0.0.1:57257 - \"GET /registry HTTP/1.1\" 200 OK\n^CINFO:     Shutting down\nINFO:     Waiting for application shutdown.\nINFO:     Application shutdown complete.\nINFO:     Finished server process [53505]\n```\n\n\u003cimg width=\"709\" height=\"214\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/20311d80-181e-4f88-8ddd-a8e6d770ada5\" /\u003e\n\n## Current Behavior\n\nWe get `\"GET /api/v1 HTTP/1.1\" 404 Not Found` and no features are loaded.\n\n```sh\n❯ uvx 'feast[mysql,gcp,grpcio]==0.64' ui\nInstalled 98 packages in 213ms\n/Users/jacobbush/.cache/uv/archive-v0/fq4ZGscWWKwrMSlB-5Oxk/lib/python3.13/site-packages/websockets/legacy/__init__.py:6: DeprecationWarning: websockets.legacy is deprecated; see https://websockets.readthedocs.io/en/stable/howto/upgrade.html for upgrade instructions\n  warnings.warn(  # deprecated in 14.0 - 2024-11-09\n/Users/jacobbush/.cache/uv/archive-v0/fq4ZGscWWKwrMSlB-5Oxk/lib/python3.13/site-packages/uvicorn/protocols/websockets/websockets_impl.py:17: DeprecationWarning: websockets.server.WebSocketServerProtocol is deprecated\n  from websockets.server import WebSocketServerProtocol\nINFO:     Started server process [55591]\nINFO:     Waiting for application startup.\nINFO:     Application startup complete.\nINFO:     Uvicorn running on http://0.0.0.0:8888 (Press CTRL+C to quit)\nINFO:     127.0.0.1:57343 - \"GET /projects-list.json HTTP/1.1\" 200 OK\nINFO:     127.0.0.1:57343 - \"GET /api/v1 HTTP/1.1\" 404 Not Found\nINFO:     127.0.0.1:57343 - \"GET /api/v1 HTTP/1.1\" 404 Not Found\n^CINFO:     Shutting down\nINFO:     Waiting for application shutdown.\nINFO:     Application shutdown complete.\nINFO:     Finished server process [55591]\n```\n\n\u003cimg width=\"859\" height=\"199\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/2524d092-d905-4abf-9913-2b1006192e51\" /\u003e\n\n## Steps to reproduce\n\n- `uvx 'feast[grpcio]==0.64' init feast_0_64_ui_404_bug`\n- `cd feast_0_64_ui_404_bug/feature_repo`\n- `uvx 'feast[grpcio]==0.64' apply`\n- `uvx 'feast[grpcio]==0.64' ui`\n- Navigate to \u003chttp://0.0.0.0:8888\u003e\n\n### Specifications\n\n- Version: 0.64.0\n- Platform: MacOS\n- Subsystem: Tahoe 26.3.1 (a)\n\n## Possible Solution\n\nFeast UI was refactored in [this PR](https://github.com/feast-dev/feast/pull/6414) which is where I assume this was introduced.","author":{"url":"https://github.com/jacob-bush-shopify","@type":"Person","name":"jacob-bush-shopify"},"datePublished":"2026-06-15T15:33:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/6519/feast/issues/6519"}