Overview
Bedrock is AWS’s multi-model service. You pick a region, then sign in with a Bedrock API key (simplest) or IAM access keys.
Models are turned on per region, and some Anthropic models ask for a short use-case form the first time. Loom shows AWS’s own message when that happens.
Get a key
- 1Open the Amazon Bedrock console in the region you want.
- 2Choose API keys in the left menu. A short-term key lasts up to 12 hours and works only in the region where you made it. A long-term key creates an IAM user for you and can last from a day to forever.
- 3Create the key and copy it. A short-term key begins
bedrock-api-key-. A long-term key is shown once. - 4Or skip API keys: use an IAM user’s access key ID and secret access key (plus a session token for temporary credentials).
Cost. Pay per use on your AWS bill. AWS recommends short-term keys, and long-term keys only for exploring.
Add it to Loom
- 1Open Loom, then Providers in the menu, and choose Add provider.
- 2Pick Amazon Bedrock (the search box finds it).
- 3Fill in the fields in the table below.
- 4Choose Connect. Loom checks the key and says how many models it found. If it cannot check, it says so, and you can Save anyway and try a message.
- 5Open the model chip below the message box and pick a model.
- Choose the same Region you used to create the key (short-term keys only work there).
- Use either the API key or the access key pair, not both.
| Field in Loom | What to put | Needed |
|---|---|---|
| Bedrock API key | Your API key. Leave empty if you use the access key pair instead | One of the two |
| Region | Pick from the list, or choose Other… to type one. us-east-1 Models are enabled per region. | Yes |
| Access key ID (instead of an API key) | AKIA… | Optional |
| Secret access key | Paste the secret | Optional |
| Session token (only for temporary credentials) | Optional | Optional |
| Endpoint | https://bedrock-runtime.{region}.amazonaws.comfilled in from the fields above | Pre-filled |
| Name | Anything you like. It is shown in the model picker | Optional |
At a glance
| Appears in Loom as | Amazon Bedrock |
| Sign-in | Bedrock API key as a bearer token, or IAM access keys signed with AWS Signature V4 |
| Models | Loom fetches the list from your account |
| Tools (connectors, search) | Depends on the model |
| Photos | Yes |
| PDFs | Depends on the model |
Good to know
Newer models often need a cross-region inference profile ID such as
global.anthropic.claude-sonnet-5-5. If a model refuses to run by its plain name, use the profile ID.With an API key, AWS may not allow listing models. If the list is empty, save anyway and type a model ID.
Which models support tools, photos and PDFs differs by model. If one does not, AWS returns a clear message and Loom shows it.
If something goes wrong
| What you see | What to do |
|---|---|
| “You don’t have access to the model” | Open Bedrock’s model access page and enable it, complete any first-time form, then try again. |
| “on-demand throughput isn’t supported” | Use the model’s inference profile ID instead. |
| 403 with an API key | The key may be from another region, or it expired. Make a new one. |