# Feature extraction with Inference API in Javascript **URL:** \ **Category:** Beginners\ **Created:** [October 4, 2024, 10:57am UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115 "2024-10-04T10:57:28Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![laurafbec](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@laurafbec](https://discuss.huggingface.co/u/laurafbec)\ **Post date:** [October 4, 2024, 10:57am UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/1 "2024-10-04T10:57:28Z")
Hi everyone, I need to use a model for feature extraction through the Inference API in Javascript. Using the examples described in [Parameters](https://huggingface.co/docs/api-inference/parameters?code=js#feature-extraction-task), by using this code: ```auto async function query(data) { const response = await fetch( "https://api-inference.huggingface.co/models/sentence-transformers/all-mpnet-base-v2", { method: "POST", headers: { Authorization: `Bearer hf_XXXXXXXXXXXXXXXXXX`, "Content-Type": "application/json" }, body: JSON.stringify(data), } ); const result = await response.json(); return result; } query({ inputs: "Can you please let us know more details about your " }).then((response) => { console.log(JSON.stringify(response, null, 2)); }); ``` I’m getting the error ```auto { "error": [ "Input should be a valid dictionary or instance of SentenceSimilarityInputsCheck: received `Can you please let us know more details about your ` in `parameters`" ] } ``` Thanks in advance! ---
**Author:** ![John6666](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/john6666/32/27664_2.png) [@John6666](https://discuss.huggingface.co/u/John6666)\ **Post date:** [October 4, 2024, 11:48am UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/2 "2024-10-04T11:48:04Z")
Maybe the error is more troublesome than I thought. Maybe something is wrong with the model repo settings. Try another model if you can. > > > this error accrues while using HuggingFaceInferenceEmbeddings with NOT default m…odel. > > error - unhandledRejection: Error: SentenceSimilarityInputsCheck expected dict not list: \`\_\_root\_\_\` in \`parameters\` > at HfInference.request (file:///C:/Users/USER/Documents/GitHub/chatbot-ui/node\_modules/@huggingface/inference/dist/index.mjs:425:13) > at process.processTicksAndRejections (node:internal/process/task\_queues:95:5) > at async HfInference.featureExtraction (file:///C:/Users/USER/Documents/GitHub/chatbot-ui/node\_modules/@huggingface/inference/dist/index.mjs:264:17) > at async RetryOperation.\_fn (C:\\Users\\USER\\Documents\\GitHub\\chatbot-ui\\node\_modules\\p-retry\\index.js:50:12) { > attemptNumber: 7, > retriesLeft: 0 > } > > all working fine if i use OpenAI embedding or HuggingFace default model > [@SentenceSimilarityInputsCheck expected dict not list: \`\_\_root\_\_\` in \`parameters\`](https://discuss.huggingface.co/t/sentencesimilarityinputscheck-expected-dict-not-list-root-in-parameters/39715): > > Hi, I’m new to ML/AI and haven’t experimented much yet. I am a experienced developer in my day job though. I’m having a few issues I’m hoping someone can help me with. My main goal is the following. I’m trying to write a bot that crawls a website, vectorizes all the text and stores this in pinecone db. Then the user can ask a question, and I query pinecone db for text that hopefully answers their question and feed that to chatgpt for it to answer the question. Everything seems to be working bu… ---
**Author:** ![laurafbec](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@laurafbec](https://discuss.huggingface.co/u/laurafbec)\ **Post date:** [October 4, 2024, 12:21pm UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/3 "2024-10-04T12:21:00Z")
Thanks @John6666!!! I’ve read it’s due to the pipeline\_tag property of the model. It seems it must have the value ‘feature-extraction’. This model worked to me: ```auto async function query(data) { const response = await fetch( "https://api-inference.huggingface.co/models/facebook/bart-base", { headers: { Authorization: "Bearer hf_XXXXXXXXXXXX", "Content-Type": "application/json", }, method: "POST", body: JSON.stringify(data), } ); const result = await response.json(); return result; } query({"inputs": "Today is a sunny day and I will get some ice cream."}).then((response) => { console.log(JSON.stringify(response)); }); ``` ---
**Author:** ![John6666](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/john6666/32/27664_2.png) [@John6666](https://discuss.huggingface.co/u/John6666)\ **Post date:** [October 4, 2024, 12:37pm UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/4 "2024-10-04T12:37:34Z")
Wow. Was it a hit? It’s going to take a while for us to report back to the model authors and get them to fix it. It’s faster if you have a usable model. ---
**Author:** ![laurafbec](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@laurafbec](https://discuss.huggingface.co/u/laurafbec)\ **Post date:** [October 7, 2024, 6:36am UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/5 "2024-10-07T06:36:40Z")
Let me know their answer!! Thanks again! ---
**Author:** ![John6666](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/john6666/32/27664_2.png) [@John6666](https://discuss.huggingface.co/u/John6666)\ **Post date:** [October 7, 2024, 6:55am UTC](https://discuss.huggingface.co/t/feature-extraction-with-inference-api-in-javascript/110115/6 "2024-10-07T06:55:24Z")
Oh, no, I’m not reporting it because it seems to have worked. It’s hard when it doesn’t work …