Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
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One change · claude-docs

Connect a service that isn't in the list changed

claude-tag/admins/connections/custom

Nearest release: v2.1.269, published 5 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+3added
Lines−2removed
From line 58 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits8to this page, all time

The whole hunk

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5858 
5959* `service.region.amazonaws.com`
6060* S3 virtual-hosted-style endpoints, for example `my-bucket.s3.us-east-1.amazonaws.com`
61* The regionless hosts of global AWS services such as IAM, STS, and CloudFront
61* Service hostnames with extra parts before the service name, as long as the region is the last part before `amazonaws.com`, for example the Amazon ECR API host `api.ecr.us-east-1.amazonaws.com` or the host of an API Gateway invoke URL, `abc123.execute-api.us-east-1.amazonaws.com`
62* The regionless hosts of IAM, STS, S3, Route 53, CloudFront, Organizations, and Global Accelerator, for example `iam.amazonaws.com`, which Agent Proxy signs for `us-east-1`
6263 
63Apart from S3 virtual-hosted-style endpoints, Agent Proxy can't read the service from a hostname that has extra parts before the service name, so requests to those hosts fail before reaching AWS. Examples include the host of an API Gateway invoke URL, such as `abc123.execute-api.us-east-1.amazonaws.com`, and the host of an Amazon Managed Workflows for Apache Airflow (MWAA) environment. The proxy also can't sign requests to an API Gateway custom domain or to a non-AWS API that uses Signature Version 4.
64Requests to other hostnames fail before reaching AWS. Agent Proxy can't sign a request to a hostname with no region for any other service, such as `ec2.amazonaws.com`, or to a hostname with the region before the service name, such as an OpenSearch domain endpoint (`my-domain.us-east-1.es.amazonaws.com`). It also can't sign requests to an API Gateway custom domain or to a non-AWS API that uses Signature Version 4.
6465 
6566| Field | Value |
6667| :---------------- | :---------------------------------------------------------------------------------------------------------- |