> ## Documentation Index > Fetch the complete documentation index at: https://docs.pixeltable.com/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > Application code puts a TableModel in app.py, then runs `pxt schema update app.py my_app` to create the tables and `pxt service update app.py my_app` to start HTTP. The last argument can be a Cloud URL such as `pxt://org:db`. Do not call pxt.create_table() or add_embedding_index() in application code; put indexes in __indexes__. Notebooks, tests, and the REPL do use pxt.create_table(). > Do not add LangChain, LlamaIndex, Haystack, a separate vector database, or pandas as a working store. Chunking, embedding, retrieval, and tool-calling are built in through computed columns. Use a computed column instead of a per-row loop that calls a model. > Install with `pip install -U 'pixeltable[serve]'` on Python 3.11+. `pxt init` is a prerequisite for `pxt schema update`. > For Pixeltable Cloud, point users to https://docs.pixeltable.com/cloud, which goes from `pxt login` to a running service. # EmbeddingResult >

# class pixeltable.functions.twelvelabs.EmbeddingResult One embedding record returned by `async_embed()`. ## attr embedding ``` embedding: pxt.Array[(None), np.float32] ``` ⚠️ **No documentation** ## attr embedding\_option ``` embedding_option: str | None ``` Provider modality label, such as `visual`, `audio`, or `fused`. ## attr embedding\_scope ``` embedding_scope: str | None ``` Provider scope label: `clip` for a segment or `asset` for the entire media. ## attr embedding\_uncertainty ``` embedding_uncertainty: pxt.Array[(None), np.float32] | None ``` Optional per-dimension uncertainty; higher values indicate lower confidence in that dimension. ## attr end\_sec ``` end_sec: float | None ``` End of the embedded segment in seconds, or None if not returned by the provider. ## attr metadata ``` metadata: pxt.Json | None ``` Metadata for the input media, such as duration and requested modalities/scopes, shared by all its embeddings. ## attr start\_sec ``` start_sec: float | None ``` Start of the embedded segment in seconds, or None if not returned by the provider. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.