deepset-ai--haystack/docs-website/versioned_docs/version-2.21/pipeline-components/embedders/amazonbedrocktextembedder.mdx

---
title: "AmazonBedrockTextEmbedder"
id: amazonbedrocktextembedder
slug: "/amazonbedrocktextembedder"
description: "This component computes embeddings for text (such as a query) using models through Amazon Bedrock API."
---

# AmazonBedrockTextEmbedder

This component computes embeddings for text (such as a query) using models through Amazon Bedrock API.

<div className="key-value-table">

|  |  |
| --- | --- |
| **Most common position in a pipeline** | Before an embedding [Retriever](../retrievers.mdx)  in a query/RAG pipeline |
| **Mandatory init variables** | `model`: The embedding model to use  <br /> <br />`aws_access_key_id`: AWS access key ID. Can be set with `AWS_ACCESS_KEY_ID` env var.  <br /> <br />`aws_secret_access_key`: AWS secret access key. Can be set with `AWS_SECRET_ACCESS_KEY` env var.  <br /> <br />`aws_region_name`: AWS region name. Can be set with `AWS_DEFAULT_REGION` env var. |
| **Mandatory run variables** | `text`: A string |
| **Output variables** | `embedding`: A list of float numbers (vector) |
| **API reference** | [Amazon Bedrock](/reference/integrations-amazon-bedrock) |
| **GitHub link** | https://github.com/deepset-ai/haystack-core-integrations/tree/main/integrations/amazon_bedrock |

</div>

## Overview

[Amazon Bedrock](https://docs.aws.amazon.com/bedrock/latest/userguide/what-is-bedrock.html) is a fully managed service that makes language models from leading AI startups and Amazon available for your use through a unified API.

Supported models are `amazon.titan-embed-text-v1`, `cohere.embed-english-v3` and `cohere.embed-multilingual-v3`.

Use `AmazonBedrockTextEmbedder` to embed a simple string (such as a query) into a vector. Use the [`AmazonBedrockDocumentEmbedder`](amazonbedrockdocumentembedder.mdx) to enrich the documents with the computed embedding, also known as vector.

### Authentication

`AmazonBedrockTextEmbedder` uses AWS for authentication. You can either provide credentials as parameters directly to the component or use the AWS CLI and authenticate through your IAM. For more information on how to set up an IAM identity-based policy, see the [official documentation](https://docs.aws.amazon.com/bedrock/latest/userguide/security_iam_id-based-policy-examples.html).
To initialize `AmazonBedrockTextEmbedder` and authenticate by providing credentials, provide the `model` name, as well as `aws_access_key_id`, `aws_secret_access_key`, and `aws_region_name`. Other parameters are optional, you can check them out in our [API reference](/reference/integrations-amazon-bedrock#amazonbedrocktextembedder).

### Model-specific parameters

Even if Haystack provides a unified interface, each model offered by Bedrock can accept specific parameters. You can pass these parameters at initialization.

For example, the Cohere models support `input_type` and `truncate`, as seen in [Bedrock documentation](https://docs.aws.amazon.com/bedrock/latest/userguide/model-parameters.html).

```python
from haystack_integrations.components.embedders.amazon_bedrock import (
    AmazonBedrockTextEmbedder,
)

embedder = AmazonBedrockTextEmbedder(
    model="cohere.embed-english-v3",
    input_type="search_query",
    truncate="LEFT",
)
```

## Usage

### Installation

You need to install `amazon-bedrock-haystack` package to use the  `AmazonBedrockTextEmbedder`:

```shell
pip install amazon-bedrock-haystack
```

### On its own

Basic usage:

```python
import os
from haystack_integrations.components.embedders.amazon_bedrock import (
    AmazonBedrockTextEmbedder,
)

os.environ["AWS_ACCESS_KEY_ID"] = "..."
os.environ["AWS_SECRET_ACCESS_KEY"] = "..."
os.environ["AWS_DEFAULT_REGION"] = "us-east-1"  # just an example

text_to_embed = "I love pizza!"

text_embedder = AmazonBedrockTextEmbedder(
    model="cohere.embed-english-v3",
    input_type="search_query",
)

print(text_embedder.run(text_to_embed))
## {'embedding': [-0.453125, 1.2236328, 2.0058594, 0.67871094...]}
```

### In a pipeline

In a RAG pipeline:

```python
from haystack import Document
from haystack import Pipeline
from haystack.document_stores.in_memory import InMemoryDocumentStore
from haystack_integrations.components.embedders.amazon_bedrock import (
    AmazonBedrockDocumentEmbedder,
    AmazonBedrockTextEmbedder,
)
from haystack.components.retrievers.in_memory import InMemoryEmbeddingRetriever

document_store = InMemoryDocumentStore(embedding_similarity_function="cosine")

documents = [
    Document(content="My name is Wolfgang and I live in Berlin"),
    Document(content="I saw a black horse running"),
    Document(content="Germany has many big cities"),
]

document_embedder = AmazonBedrockDocumentEmbedder(model="cohere.embed-english-v3")
documents_with_embeddings = document_embedder.run(documents)["documents"]
document_store.write_documents(documents_with_embeddings)

query_pipeline = Pipeline()
query_pipeline.add_component(
    "text_embedder",
    AmazonBedrockTextEmbedder(model="cohere.embed-english-v3"),
)
query_pipeline.add_component(
    "retriever",
    InMemoryEmbeddingRetriever(document_store=document_store),
)
query_pipeline.connect("text_embedder.embedding", "retriever.query_embedding")

query = "Who lives in Berlin?"

result = query_pipeline.run({"text_embedder": {"text": query}})

print(result["retriever"]["documents"][0])

## Document(id=..., content: 'My name is Wolfgang and I live in Berlin')
```

## Additional References

🧑‍🍳 Cookbook: [PDF-Based Question Answering with Amazon Bedrock and Haystack](https://haystack.deepset.ai/cookbook/amazon_bedrock_for_documentation_qa)